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XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
November 7, 2003 Ver. 4
! Low Power Consumption ! Dropout Voltage ! ! ! ! !
Output Voltage Range Output Current High Ripple Rejection Rate Low Output Noise Low ESR capacitor compatible
: 25 A (TYP) : 30mV @ 30mA : 100mV @ 100mA : 0.8 V to 5.0 V : More than 150 mA (300mA limit) : 70 dB @ 1kHz
! APPLICATIONS
" " " " " "
Mobile phones (PDC, GSM, CDMA, IMT2000 etc.) Cordless phones and radio communication equipment Portable games Cameras, Video recorders Portable AV equipment PDAs
! GENERAL DESCRIPTION
The XC6401 series are highly accurate, Dual, low noise, CMOS LDO voltage regulators. Performance features of the series includes low output noise, high ripple rejection ratio, low dropout and very fast turn-on times. The XC6401 includes a reference voltage source, error amplifiers, driver transistors, current limiters and phase compensators internally. The XC6401's current limiters' foldback circuit also operates as a short protect for the output current limiter. The output voltage for each regulator is set independently by laser trimming. Voltages are selectable in 50mV steps within a range of 0.8V to 5.0V. The XC6401 series is also fully compatible with low ESR ceramic capacitors, reducing cost and improving output stability. This high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response performance and high PSRR achieved across a broad range of frequencies. The EN function allows the output of each regulator to be turned off independently, resulting in greatly reduced power consumption. The XC6401 series is available in the SOT-26W or USP-6B `chipscale' package.
! FEATURES
Maximum Output Current Dropout Voltage Operating Voltage Range Output Voltage Range Highly Accurate : 150mA or more (300mA limit) : 100mV (IOUT=100mA) : 1.5V ~ 6.0V : 0.8V ~ 5.0V (50mV Step) : 2% (VOUT>1.5V) : 30mV (VOUT1.5V) Low Power Consumption Standby Current High Ripple Rejection Operating Temperature Range Low ESR Capacitor Compatible Ultra Small Packages : 25 mA (TYP.) : Less than 0.1A (TYP.) : 70dB (1kHz) : -40OC ~ +85OC : Ceramic capacitor : SOT-26W USP-6B
! TYPICAL APPLICATION CIRCUITS
EN1 VOUT1 6 1 2
! TYPICAL PERFORMANCE CHARACTERISTICS
# Cross Talk
CL1 1uF
XC6401 (VR1:3.0V, VR2:2.85V)
VIN=4.0V, CIN= CL=1uF (ceramics) 3.1
VR1 Output Voltage (3.0V)
5
VIN
VSS
CIN 1uF EN2 VOUT2 4 3 CL2 1uF
500 400 300
VR2 Output Voltage (2.85V)
100mA
3.0 2.9 2.8 2.7
10mA
200 100 0
1 2 CIN 1uF 3
EN2 VOUT2 VIN VOUT1 EN1 VSS
6 5 4 CL1 1uF CL2 1uF
VR1 Output Current
2.6 Time (40usec/div)
Semiconductor Ltd.
Data Sheet
1
Output Current 1 IOUT (mA)
Output Voltage VOUT (V)
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
! PIN CONFIGURATION
VOUT1 6 VSS 5 VOUT2 4 EN2 VIN EN1 1 EN1 2 VIN SOT-26W (TOP VIEW) 3 EN2 USP-6B (TOP VIEW) 1 2 3 6 5 4 VOUT2 VOUT1 VSS
! PIN ASSIGNMENT
PIN NUMBER SOT-26W 1 2 3 4 5 6 USP-6B 3 2 1 6 4 5 EN1 VIN EN2 VOUT2 VSS VOUT1 ON/OFF Control 1 Power Input ON/OFF Control 2 Output 2 Ground Output 1 PIN NAME FUNCTION
*
A Pin number 1 is under the marking of the leftmost of 4 digits.
! PRODUCT CLASSIFICATION
" SELECTION GUIDE
The following options for the Regulator 1, 2, the EN pin logic, internal pull-up / down are available.
" ORDERING INFORMATION
DESIGNATOR SYMBOL
XC6401123456
DESCRIPTION DESIGNATOR SYMBOL DESCRIPTION Internally set sequential number relating output voltage of each regulators
Regulator 1, EN type E Active 'High' (Pull-down resistor built in)
1
F
Active 'High' (No pull-down, resistor built in)
34
01 ~
Regulator 1 Output Voltage Range : 0.8 ~ 5.0 V Regulator 2 Output Voltage Range : 0.8 ~ 5.0 V Both 1 and 2 can be set 50 mV steps Packaging Types
G
Active 'Low' (Pull-down resistor built in)
H
Active 'Low' (No pull-down, resistor built in) Regulator 2, EN type
E
Active 'High' (Pull-down resistor built in)
5
D
USP-6B
M
SOT-26W Device Orientation
2
F
Active 'High' (No pull-down, resistor built in)
G
Active 'Low' (Pull-down resistor built in)
6
R
Embossed Tape: Standard Feed
H
Active 'Low' (No pull-down, resistor built in)
L
Embossed Tape: Reverse Feed
Semiconductor Ltd.
Data Sheet
2
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
! ABSOLUTE MAXIMUM RATINGS
Ta = 25OC PARAMETER Input Voltage Output Current Output Voltage EN Pin Voltage Power Dissipation SOT-26W USP-6B Operating Ambient Temperature Storage Temperature Topr Tstg SYMBOL VIN IOUT1 + IOUT2 VOUT VEN Pd RATINGS 6.5 700 VSS -0.3 ~ VIN +0.3 VSS -0.3 ~ VIN +0.3 250 100 -40 ~ +85 -55 ~ +125
O
UNITS V mA V V mW C C
O
! ELECTRICAL CHARACTERISTICS
Regulator 1, Regulator 2 PARAMETER SYMBOL
XC6401FFxx
Ta=25OC CONDITIONS VIN=VOUT (T) + 1.0V IOUT=30mA VIN=VOUT (T) + 1.0V 1mAIOUT100mA IOUT=30mA IOUT=100mA VIN=VEN=VOUT (T) + 1.0V, IOUT=0mA VIN=VOUT (T) + 1.0V, VEN=VSS VOUT(T)+1.0VVIN6.0V IOUT=30mA 1.5 IOUT=30mA -40OCTopr85OC IOUT=30mA, f=1kHz
VIN=VOUT (T) + 1.0V, VEN=VIN VIN=VOUT (T) + 1.0V, VEN=VIN
MIN x 0.98 150
TYP
MAX x 1.02
UNITS
CIRCUIT
Output Voltage (Note 7) Maximum Output Current Load Regulation Dropout Voltage Supply Current Standby Current Line Regulation Input Voltage Output Voltage Temperature Characteristics Ripple Rejection Rate Current Limiter Short-circuit Current EN "High" Voltage EN "Low" Voltage EN "High" Current EN "Low" Current NOTE (NOTE 1) (NOTE 2) (NOTE 3) (NOTE 4) (NOTE 5) (NOTE 6) (NOTE 7)
VOUT (E) IOUTMAX VOUT Vdif1 Vdif2 ISS ISTB VOUT / VIN VOUT VIN VOUT / Topr VOUT PSRR Ilim Ishort VENH VENL IENH IENL
VOUT(T)
V mA
1 1 1 1 2 3 1
15 E-1 E-2 25 0.01 0.01
60
mV mV mV
45 0.10 0.20 6.0
A A %/V V ppm/ O C dB mA mA
100 70 300 30 1.60 VIN 0.25
1 5 1 1 4 4 4 4
V V A A
VIN=VEN=VOUT (T) + 1.0V
VIN=VEN=VOUT (T) + 1.0V, VEN=VSS
-0.10 -0.10
0.10 0.10
VOUT(T)=Specified Output Voltage VOUT(E)=Effective Output Voltage (I.e. the output voltage when "VOUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IOUT value). Vdif={VIN1(NOTE5)-VOUT1(NOTE4)} VOUT1=A voltage equal to 98% of the Output Voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input. VIN1=The Input Voltage when VOUT1 appears as Input Voltage is gradually decreased. Unless otherwise stated, VIN=VOUT(T)+1.0V If VOUT (T) 1.45V, MIN VOUT (T) - 30mV MAX VOUT (T) + 30mV
Semiconductor Ltd.
Data Sheet
3
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
! DROPOUT VOLTAGE
SETTING OUTPUT VOLTAGE (V) VOUT (T) 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 2.05 2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 2.75 2.80 2.85 2.90 2.95 MIN. 0.770 0.820 0.870 0.920 0.970 1.020 1.070 1.120 1.170 1.220 1.270 1.320 1.370 1.420 1.470 1.519 1.568 1.617 1.666 1.715 1.764 1.813 1.862 1.911 1.960 2.009 2.058 2.107 2.156 2.205 2.254 2.303 2.352 2.401 2.450 2.499 2.548 2.597 2.646 2.695 2.744 2.793 2.842 2.891 OUTPUT VOLTAGE (V) VOUT MAX. 0.830 0.880 0.930 0.980 1.030 1.080 1.130 1.180 1.230 1.280 1.330 1.380 1.430 1.480 1.530 1.581 1.632 1.683 1.734 1.785 1.836 1.887 1.938 1.989 2.040 2.091 2.142 2.193 2.244 2.295 2.346 2.397 2.448 2.499 2.550 2.601 2.652 2.703 2.754 2.805 2.856 2.907 2.958 3.009 35 55 110 160 40 60 120 170 45 65 140 180 50 75 150 200 55 100 165 250 60 200 180 300 65 300 200 400 80 400 240 500 100 500 270 600 200 600 350 700 MIN. 300 DROPOUT VOLTAGE 1 E-1 (mV) Vdif 1 MAX. 700 MIN. 400 DROPOUT VOLTAGE 2 E-2 (mV) Vdif 2 MAX. 800
Semiconductor Ltd.
Data Sheet
4
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
! DROPOUT VOLTAGE
SETTING OUTPUT VOLTAGE (V) VOUT (T) 3.00 3.05 3.10 3.15 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 3.65 3.70 3.75 3.80 3.85 3.90 3.95 4.00 4.05 4.10 4.15 4.20 4.25 4.30 4.35 4.40 4.45 4.50 4.55 4.60 4.65 4.70 4.75 4.80 4.85 4.90 4.95 5.00 MIN. 2.940 2.989 3.038 3.087 3.136 3.185 3.234 3.283 3.332 3.381 3.430 3.479 3.528 3.577 3.626 3.675 3.724 3.773 3.822 3.871 3.920 3.969 4.018 4.067 4.116 4.165 4.214 4.263 4.312 4.361 4.410 4.459 4.508 4.557 4.606 4.655 4.704 4.753 4.802 4.851 4.900 OUTPUT VOLTAGE (V) VOUT MAX. 3.060 3.111 3.162 3.213 3.264 3.315 3.366 3.417 3.468 3.519 3.570 3.621 3.672 3.723 3.774 3.825 3.876 3.927 3.978 4.029 4.080 4.131 4.182 4.233 4.284 4.335 4.386 4.437 4.488 4.539 4.590 4.641 4.692 4.743 4.794 4.845 4.896 4.947 4.998 5.049 5.100 30 45 100 150 MIN. DROPOUT VOLTAGE 1 E-1 (mV) Vdif 1 MAX. MIN. DROPOUT VOLTAGE 2 E-2 (mV) Vdif 2 MAX.
Semiconductor Ltd.
Data Sheet
5
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
! OPERATIONAL EXPLANATION
Output voltage control with the XC6401 series: The voltage divided by resistors R1 & R2 is compared with the internal reference voltage by the error amplifier. The P-Channel MOSFETs, which are connected to the VOUT1 and VOUT2 pins, are then driven by the subsequent output signal. The output voltages at the VOUT1 and VOUT2 pins are controlled and stabilized by a system of negative feedback. The current limit circuit and short protect circuit operate in relation to the level of output current. Further, the IC's internal circuitry can be shutdown via the EN pin's signal.
EN1
ON/OFF Control
+Error Amp1
Current Limit
VOUT1 R11 R12
VR1 Each Circuit
VIN
VSS
+ VR2 Each Circuit Voltage Reference Error Amp2 Current Limit
VOUT2 R21 R22
EN2
ON/OFF Control
Low ESR Capacitors With the XC6401 series, a stable output voltage is achievable even if used with low ESR capacitors as a phase compensation circuit is built-in. In order to ensure the effectiveness of the phase compensation, we suggest that output capacitors (CL1, CL2) is connected as close as possible to the output pins (VOUT1 and VOUT2) and the VSS pin. Please use an output capacitor with a capacitance value of at least 1F. Also, please connect an input capacitor (CIN) of 0.1F between the VIN pin and the VSS pin in order to ensure a stable power input.
Current Limiter, Short-Circuit Protection The XC6401 series includes a combination of a fixed current limiter circuit & a foldback circuit which aid the operations of the current limiter and circuit protection. When the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops. As a result of this drop in output voltage, the foldback circuit operates, output voltage drops further and output current decreases. When the output pin is shorted, a current of about 30mA flows. EN Pins The IC's internal circuitry can be shutdown via the signal from the EN1 and EN2 pins with the XC6401 series. In shutdown mode, output at the VOUT1 and VOUT2 pins will be pulled down to the VSS level via R11 & R12 and R21 & R22. The operational logic of the IC's EN1 and EN2 pins are selectable (please refer to the selection guide on page 2). Note that as the standard XC6401FF type's regulator 1 and 2 are both ' High Active/No Pull Down', operations will become unstable with the EN1 or EN2 pins open. Although the EN1 and EN2 pins are equal to an inverter input with CMOS hysteresis, with either the pull-up or pull-down options, the EN1 and EN2 pins input current will increase when the IC is in operation. We suggest that you use this IC with either a VIN voltage or a VSS voltage input at the EN1 and EN2 pins. If this IC is used with the correct specifications for the EN1 and EN2 pins, the operational logic is fixed and the IC will operate normally. However, supply current may increase as a result of through current in the IC's internal circuitry.
! NOTE ON USE 1 Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be exceeded. 2 Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. Please keep the resistance low between VIN and VSS wiring in particular. 3 Please wire the input capacitor (CIN) and the output capacitors (CL1, CL2) as close to the IC as possible.
Semiconductor Ltd.
Data Sheet
6
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
! TEST CIRCUITS
Circuit 1
CIN, CL1, CL2 : 1F(ceramic) VIN EN1 VOUT1
A
CL1 IOUT1 RL1
EN1/EN2 :
V
CIN
V
Active 'High' = EN=VIN Active 'Low' = EN=VSS
EN2
VOUT2
A
CL2 IOUT2
VSS
V
RL2
Circuit 2
CL1, CL2 :1F(ceramic) VIN EN1 VOUT1 CL1 VIN EN2 VOUT2 CL2 IOUT2 IOUT1
EN1/EN2 : 1. Active 'High' (Pull-down resistor built-in) VR1 Supply Current ISS1=I1 (Note:EN1=ON, EN2=OFF) VR2 Supply Current ISS2=I1 (Note:EN1=OFF, EN2=ON) 2. Active 'High' (Pull-down, no resistor built-in) VR1 Supply Current ISS1=I1 (Note:EN1=ON, EN2=OFF) VR2 Supply Current ISS2=I1 (Note:EN1=OFF, EN2=ON)
VSS I2
A
A
I3
A
I1
A
A
3. Active 'Low' (Pull-up resistor built-in) VR1 Supply Current ISS1=I1+I2 (Note:EN1=ON, EN2=OFF) VR2 Supply Current ISS2=I1+I3 (Note:EN1=OFF, EN2=ON) 4. Active 'Low' (Pull-up, no resistor built-in) VR1 Supply Current ISS1=I1 (Note:EN1=ON, EN2=OFF) VR2 Supply Current ISS2=I1 (Note:EN1=OFF, EN2=ON)
Circuit 3
EN1/EN2 :
VIN
Active 'High' = EN=VSS Active 'Low' = EN=VIN
A
VIN
EN1
VOUT1
EN2
VOUT2 VSS
Semiconductor Ltd.
Data Sheet
7
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
! TEST CIRCUITS (Continued)
Circuit 4
VIN EN1 CIN VOUT1 CL1 EN2 VOUT2 IOUT2 CL2 IOUT1
V
A
VEN1
V
A
VEN2
VSS
CIN, CL1, CL2 :1F(ceramic )
Circuit 5
CL1, CL2 : 1F(ceramic) VIN VIN =[VOUT (T)+1.0] V+0.5Vp-pAC EN1 VOUT1 CL1 IOUT1
EN1/EN2 : Active 'High' = EN=VIN Active 'Low' = EN=VSS
V
EN2 VOUT2
V
VSS
CL2
IOUT2
V
Semiconductor Ltd.
Data Sheet
8
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
! TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
XC6401 (0.8V)
1.0 Output Voltage VOUT (V) 0.8 0.6 0.4 0.2 0.0 0 50 100 150 200 250 300 Output Current IOUT (mA) 350 Topr = 85OC = 25OC = - 40OC VIN=1.8V CIN=1uF (ceramics), CL=1uF (ceramics) Output Voltage VOUT (V) 1.0 0.8 0.6 0.4 0.2 0.0 0 50
XC6401(0.8V)
VIN=4.0V CIN=1uF (ceramics), CL=1uF (ceramics)
VIN = 6.0V = 1.8V = 1.8V = 1.5V
100 150 200 250 300 Output Current IOUT (mA)
350
XC6401(2.85V)
4.0 Output Voltage VOUT (V) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 50 100 150 200 250 300 350 Topr = 85OC = 25OC = - 40OC VIN=3.85V CIN=1uF (ceramics), CL=1uF (ceramics) Output Voltage VOUT (V) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 50
XC6401(2.85V)
VIN=4.0V CIN=1uF (ceramics), CL=1uF (ceramics)
VIN = 6.0V = 4.0V = 3.15V
100
150
200
250
300
350
Output Current IOUT (mA)
Output Current IOUT (mA)
XC6401(3.0V)
4.0 Output Voltage VOUT (V) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 50 100 150 200 250 300 350 Output Current IOUT (mA) Topr = 85OC = 25OC = - 40OC Output Voltage VOUT (V) VIN=4.0V CIN=1uF (ceramics), CL=1uF (ceramics) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 50
XC6401(3.0V)
VIN=4.0V CIN=1uF (ceramics), CL=1uF (ceramics)
VIN = 6.0V = 4.0V = 3..3V
100 150 200 250 300 Output Current IOUT (mA)
350
Semiconductor Ltd.
Data Sheet
9
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(1) Output Voltage vs. Output Current (Continued)
XC6401(5.0V)
6.0 Output Voltage VOUT (V) 5.0 4.0 3.0 2.0 1.0 0.0 0 50 100 150 200 250 300 Output Current IOUT (mA) 350 Topr = 85OC = 25OC = - 40OC VIN=6.0V CIN=1uF (ceramics), CL=1uF (ceramics) Output Voltage VOUT (V) 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 50
XC6401(5.0V)
VIN=4.0V CIN=1uF (ceramics), CL=1uF (ceramics)
VIN = 6.0V = 5.3V
100
150
200
250
300
350
Output Current IOUT (mA)
(2) Output Voltage vs. Input Voltage
XC6401(0.8V)
Topr = 25 C CIN=1uF (ceramics), CL=1uF (ceramics) Output Voltage VOUT (V) IOUT = 0mA = 30mA = 100mA
O
XC6401(0.8V)
0.90 0.85 0.80 0.75 0.70 0.65 Topr = 25OC CIN=1uF (ceramics), CL=1uF (ceramics)
1.2 Output Voltage VOUT (V) 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.5
IOUT = 0mA = 30mA = 100mA
1.0
1.5
2.0
2.5
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Input Voltage VIN (V)
Input Voltage VIN (V)
XC6401(2.85V)
3.05 Output Voltage VOUT (V) 2.85 2.65 2.45 2.25 2.05 2.35 IOUT = 0mA = 30mA = 100mA Topr = 25OC CIN=1uF (ceramics), CL=1uF (ceramics) Output Voltage VOUT (V) 2.95 2.90 2.85 2.80 2.75 2.70 2.85 Input Voltage VIN (V) 3.35 3.0 3.5
XC6401(2.85V)
Topr = 25OC CIN=1uF (ceramics), CL=1uF (ceramics)
IOUT = 0mA = 30mA = 100mA
4.0
4.5
5.0
5.5
6.0
Input Voltage VIN (V)
Semiconductor Ltd.
Data Sheet
10
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(2) Output Voltage vs. Input Voltage (Continued)
XC6401(3.0V)
3.2 Output Voltage VOUT (V) Output Voltage VOUT (V) 3.0 2.8 2.6 2.4 2.2 2.5 3.0 Input Voltage VIN (V) 3.5 IOUT = 0mA = 30mA = 100mA 3.10 3.05 3.00 2.95 2.90 2.85 3.5 4.0
XC6401(3.0V)
Topr = 25OC CIN=1uF (ceramics), CL=1uF (ceramics)
IOUT = 0mA = 30mA = 100mA
4.5
5.0
5.5
6.0
Input Voltage VIN (V)
XC6401(5.0V)
5.2 Output Voltage VOUT (V) 5.0 4.8 4.6 4.4 4.2 4.5 5.0 Input Voltage VIN (V) (3) Dropout Voltage vs. Output Current 5.5 IOUT = 0mA = 30mA = 100mA Topr = 25OC CIN=1uF (ceramics), CL=1uF (ceramics) Output Voltage VOUT (V) 5.10 5.05 5.00 4.95 4.90 4.85 5.5
XC6401(5.0V)
Topr = 25OC CIN=1uF (ceramics), CL=1uF (ceramics)
IOUT = 0mA = 30mA = 100mA
6.0 Input Voltage VIN (V)
XC6401(0.8V)
1.0 Dropout Voltage Vdif (V) 0.8 0.6 0.4 0.2 0.0 0 50 100 150 200 Output Current IOUT (mA) CIN=1uF (ceramics), CL=1uF (ceramics) Topr = 85OC = 25OC = - 40OC 0.5 Dropout Voltage Vdif (V) 0.4 0.3 0.2 0.1 0.0 0
XC6401(2.85V)
CIN=1uF (ceramics), CL=1uF (ceramics)
Topr = 85OC = 25OC = - 40OC
50
100
150
200
Output Current IOUT (mA)
Semiconductor Ltd.
Data Sheet
11
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(3) Dropout Voltage vs. Output Current (Continued)
XC6401(3.0V)
0.5 Dropout Voltage Vdif (V) 0.4 0.3 0.2 0.1 0.0 0 50 100 150 200 CIN=1uF (ceramics), CL=1uF (ceramics) Topr = 85OC = 25OC = - 40OC 0.5 Dropout Voltage Vdif (V) 0.4 0.3 0.2 0.1 0.0 0 50
XC6401(5.0V)
CIN=1uF (ceramics), CL=1uF (ceramics)
Topr = 85OC = 25OC = - 40OC
100
150
200
Output Current IOUT (mA)
Output Current IOUT (mA)
XC6401(0.8V)
100 Supply Current ISS (uA) 80 60 40 20 0 0 1 2 3 4 5 6 Input Voltage VIN (V) Supply Current ISS (uA) Topr = 85OC = 25OC = - 40OC 100 80 60 40 20 0 0 1
XC6401(2.85V)
Topr = 85OC = 25OC = - 40OC
2
3
4
5
6
Intput Voltage VIN (V)
XC6401(3.0V)
100 Supply Current ISS (uA) 80 60 40 20 0 0 1 2 3 4 Input Voltage VIN (V) 5 6 Supply Current ISS (uA) Topr = 85OC = 25OC = - 40OC 100 80 60 40 20 0 0 1
XC6401(5.0V)
Topr = 85OC = 25OC = - 40OC
2 3 4 Input Voltage VIN (V)
5
6
Semiconductor Ltd.
Data Sheet
12
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(5) Output Voltage vs. Ambient Temperature
XC6401(0.8V)
0.84 Output Voltage VOUT (V) VIN = 1.8V CIN=1uF (ceramics), CL=1uF (ceramics) Output Voltage VOUT (V) 2.95
VIN = 4.0V CIN=1uF (ceramics), CL=1uF (ceramics)
XC6401(2.85V)
0.82
2.90
0.80 IOUT = 0mA = 10mA = 30mA = 100mA
2.85 IOUT = 0mA = 10mA = 30mA = 100mA
0.78
2.80
0.76 -50 -25 0 25 50 75 100 Ambient Temperature Topr (OC)
2.75 -50 -25 0 25 50 75
O
100
Ambient Temperature Topr ( C)
XC6401(3.0V)
3.10 Output Voltage VOUT (V) VIN = 4.0V CIN=1uF (ceramics), CL=1uF (ceramics) Output Voltage VOUT (V) 5.20
XC6401(5.0V)
VIN = 5.0V CIN=1uF (ceramics), CL=1uF (ceramics)
3.05
5.10
3.00 IOUT = 0mA = 10mA = 30mA = 100mA
5.00 IOUT = 0mA = 10mA = 30mA = 100mA
2.95
4.90
2.90 -50 -25 0 25 50 75 100 Ambient Temperature Topr (OC) (6) Supply Current vs. Ambient Temperature
4.80 -50 -25 0 25 50 75 100 Ambient Temperature Topr (OC)
XC6401(0.8V)
VIN = 1.8V 30 Output Voltage VOUT (V) Output Voltage VOUT (V) 28 26 24 22 20 -50 -25 0 25 50 75 100 Ambient Temperature Topr (OC) 30 28 26 24 22 20 -50
XC6401(2.85V)
VIN = 3.85V
-25 0 25 50 75 Ambient Temperature Topr (OC)
100
Semiconductor Ltd.
Data Sheet
13
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(6) Supply Current vs. Ambient Temperature (Continued)
XC6401(3.0V)
VIN = 4.0V 30 Output Voltage VOUT (V) 28 26 24 22 20 -50 -25 0 25 50 75 100 Ambient Temperature Topr (OC) Output Voltage VOUT (V) 30 28 26 24 22 20 -50
XC6401(5.0V)
VIN = 6.0V
-25 0 25 50 75 Ambient Temperature Topr (OC)
100
Semiconductor Ltd.
Data Sheet
14
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(7) Input Transient Response
XC6401(0.8V)
1.00 Output Voltage VOUT (V) 0.95 0.90 0.85 0.80 0.75 0.70 Time (200usec/div) Output Voltage Input Voltage tr=tf=5use CL=1uF (ceramics), IOUT=100uA 4 3 Input Voltage VIN (V) 2 1 0 -1 -2 Output Voltage VOUT (V) 1.00 0.95 0.90 0.85 0.80
XC6401(0.8V)
tr=tf=5use CL=1uF (ceramics), IOUT=30mA 4 3 Input Voltage 2 1 0 Output Voltage 0.75 0.70 Time (40usec/div) -1 -2 Input Voltage VIN (V) Input Voltage VIN (V) Input Voltage VIN (V)
XC6401(0.8V)
1.00 Output Voltage VOUT (V) 0.95 0.90 0.85 0.80 0.75 0.70 Time (40usec/div) Output Voltage Input Voltage tr=tf=5use CL=1uF (ceramics), IOUT=100mA 4 Output Voltage VOUT (V) 3 Input Voltage VIN (V) 2 1 0 -1 -2 3.05 3.00 2.95 2.90 2.85 2.80 2.75
XC6401(2.85V)
tr=tf=5use CL=1uF (ceramics), IOUT=100uA 6 5 Input Voltage 4 3 2 Output Voltage 1 0 Time (200usec/div)
XC6401(2.85V)
tr=tf=5use CL=1uF (ceramics), IOUT=30mA 6 Output Voltage VOUT (V) 5 Input Voltage Input Voltage VIN (V) 4 3 2 Output Voltage 1 0 Time (40usec/div)
XC6401(2.85V)
tr=tf=5use CL=1uF (ceramics), IOUT=100mA
3.05 Output Voltage VOUT (V) 3.00 2.95 2.90 2.85 2.80 2.75
3.05 3.00 2.95 2.90 2.85 2.80 2.75
6 5
Input Voltage
4 3 2
Output Voltage
1 0
Time (40usec/div)
Semiconductor Ltd.
Data Sheet
15
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(7) Input Transient Response (Continued)
XC6401(3.0V)
3.20 Output Voltage VOUT (V) 3.15 3.10 3.05 3.00 Output Voltage 2.95 2.90 Time (200usec/div) 1 0 Input Voltage tr=tf=5use CL=1uF (ceramics), IOUT=100uA 6 5 Input Voltage VIN (V) Input Voltage VIN (V) 4 3 2 3.20 3.15 3.10 3.05 3.00 2.95 2.90
XC6401(3.0V)
tr=tf=5use CL=1uF (ceramics), IOUT=30mA 6 5 Input Voltage 4 3 2 Output Voltage 1 0 Time (40usec/div) Input Voltage VIN (V) Input Voltage VIN (V) Input Voltage VIN (V)
XC6401(3.0V)
3.20 Output Voltage VOUT (V) 3.15 3.10 3.05 3.00 2.95 2.90 Time (40usec/div) Output Voltage Input Voltage tr=tf=5use CL=1uF (ceramics), IOUT=100mA 6 5 Input Voltage VIN (V) 4 3 2 1 0 Output Voltage VOUT (V) 5.20 5.15 5.10 5.05 5.00
XC6401(5.0V)
tr=tf=5use CL=1uF (ceramics), IOUT=100uA 8 7 Input Voltage 6 5 4 Output Voltage 4.95 4.90 Time (200usec/div) 3 2
XC6401(5.0V)
tr=tf=5use CL=1uF (ceramics), IOUT=30mA
XC6401(5.0V)
tr=tf=5use CL=1uF (ceramics), IOUT=100mA
5.20 Output Voltage VOUT (V) 5.15 5.10 5.05 5.00 4.95 4.90
8 Output Voltage VOUT (V) Input Voltage VIN (V) 7
5.20 5.15 5.10 5.05 5.00
8 7
Input Voltage
6 5 4
Input Voltage
6 5 4
Output Voltage
Output Voltage 4.95 4.90 Time (40usec/div) 3 2
3 2
Time (40usec/div)
Semiconductor Ltd.
Data Sheet
16
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(8) Load Transient Response
XC6401(0.8V)
0.90 Output Voltage VOUT (V) 0.80 Output Voltage 0.70 0.60 Output Current 0.50 0.40 Time (40usec/div)
50mA 10mA
XC6401(0.8V)
250 Output Current IOUT (mA) 200 150 100 50 0 Output Voltage VOUT (V) 0.90 0.80 Output Voltage 0.70 0.60 0.50
10mA 100mA
VIN=1.8V, tr=tf=5use CIN=CL=1uF (ceramics)
VIN=1.8V, tr=tf=5use CIN=CL=1uF (ceramics)
250 200 150 100 Output Current IOUT (mA) Output Current IOUT (mA) Output Current IOUT (mA)
Output Current
50 0
0.40 Time (40usec/div)
XC6401(2.85V)
2.95 Output Voltage VOUT (V) 2.85 Output Voltage 2.75 2.65
50mA
XC6401(2.85V)
250 Output Current IOUT (mA) 200 150 100 Output Voltage VOUT (V) 2.95 2.85 2.75
100mA
VIN=4.0V, tr=tf=5use CIN=CL=1uF (ceramics)
VIN=4.0V, tr=tf=5use CIN=CL=1uF (ceramics)
250 200
Output Voltage
150 100
2.65 2.55
10mA
Output Current 50
2.55
10mA
Output Current
50 0
2.45 Time (40usec/div)
0
2.45 Time (40usec/div)
XC6401(3.0V)
VIN=4.0V, tr=tf=5use CIN=CL=1uF (ceramics)
XC6401(3.0V)
VIN=4.0V, tr=tf=5use CIN=CL=1uF (ceramics)
3.10 Output Voltage VOUT (V) 3.00
250 Output Current IOUT (mA) Output Voltage VOUT (V) 200
3.10 3.00
250 200
Output Voltage 2.90 2.80
50mA
Output Voltage 2.90
100mA
150 100 Output Current 50 0 Time (40usec/div)
150 100 Output Current
10mA
2.80 2.70 2.60 Time (40usec/div)
2.70 2.60
10mA
50 0
Semiconductor Ltd.
Data Sheet
17
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(8) Load Transient Response (Continued)
XC6401(5.0V)
5.10 Output Voltage VOUT (V) 5.00 Output Voltage 4.90 4.80 Output Current 4.70 4.60
50mA
XC6401(5.0V)
250 Output Current IOUT (mA) Output Voltage VOUT (V) 200 150 100 50 0 5.10 5.00 Output Voltage 4.90 4.80 4.70
10mA 100mA
VIN=6.0V, tr=tf=5use CIN=CL=1uF (ceramics)
VIN=6.0V, tr=tf=5use CIN=CL=1uF (ceramics)
250 200 150 100 Output Current IOUT (mA)
Output Current 50 0 Time (40usec/div)
10mA
4.60
Time (40usec/div)
Semiconductor Ltd.
Data Sheet
18
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible Preliminary
(9) Ripple Rejection Rate
XC6401(0.8V)
80 Ripple Rejection Rate RR (dB) VIN=1.8V DC+0.5Vp-pAC IOUT=30mA, CL=1uF (ceramics) Ripple Rejection Rate RR (dB) 80
XC6401(2.85V)
VIN=3.85V DC+0.5Vp-pAC IOUT=30mA, CL=1uF (ceramics)
60
60
40
40
20
20
0 0.01
0.1
1
10
100
0 0.01
0.1
1
10
100
Ripple Frequency f (kHz)
Ripple Frequency f (kHz)
XC6401(3.0V)
80 Ripple Rejection Rate RR (dB) VIN=4.0V DC+0.5Vp-pAC IOUT=30mA, CL=1uF (ceramics) Ripple Rejection Rate RR (dB) 80
XC6401(5.0V)
VIN=5.75V DC+0.5Vp-pAC IOUT=30mA, CL=1uF (ceramics)
60
60
40
40
20
20
0 0.01
0.1 1 10 Ripple Frequency f (kHz)
100
0 0.01
0.1
1
10
100
Ripple Frequency f (kHz)
(10) Cross Talk
XC6401 (VR1:3.0V, VR2:2.85V)
VIN=4.0V, CIN= CL=1uF (ceramics) 3.1
VR1 Output Voltage (3.0V)
500 400 300
VR2 Output Voltage (2.85V)
100mA
3.0 2.9 2.8 2.7
10mA
200 100 0
VR1 Output Current
2.6 Time (40usec/div)
Output Current 1 IOUT (mA)
Output Voltage VOUT (V)
Semiconductor Ltd.
Data Sheet
19

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