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NJM2819A
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION The NJM2819A is a low dropout voltage regulator with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. It delivers up to 7V/2A output power with the maximum input voltage of 10V. The NJM2819A is suitable for audio/video and digital applications. FEATURES High Ripple Rejection 65dB typ. (f=1kHz,3V Version) Output Noise Voltage Vno=42Vrms typ. (Vo=3V Version) Output capacitor with 4.7F ceramic capacitor (Vo2.1V) Output Current Io(max.)=2.0A High Precision Output Vo 1.0% Low Dropout Voltage 0.1V typ. (Io=1.0A, 3.0V Version) ON/OFF Control Internal Short Circuit Current Limit Internal Thermal Overload Protection Package Outline TO-252-5 PIN CONFIGURATION
3
PACKAGE OUTLINE
NJM2819ADL3
12345
1. VIN 2. CONTROL 3. Vo 4. N.C. 5. GND
NJM2819ADL3 EQUIVALENT CIRCUIT
VIN
Current Limit
VOUT
CONTROL
Bandgap Reference Thermal Protection
GND
Ver.2010-02-08
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NJM2819A
OUTPUT VOLTAGE RANK LIST Device Name VOUT NJM2819ADL3-18 1.8V NJM2819ADL3-21 2.1V NJM2819ADL3-03 3.0V NJM2819ADL3-33 3.3V NJM2819ADL3-05 5.0V NJM2819ADL3-52 5.2V NJM2819ADL3-07 7.0V Output voltage options available : 1.8 ~ 7.0V ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage Control Voltage Power Dissipation Operating Temperature Storage Temperature VIN VCONT PD Topr Tstg (Ta=25C) UNIT V V mW C C
RATINGS VO > 6.0V: +10 5.0V < VO 6.0V: +9V VO 5.0V: +8 VO > 6.0V: +10 5.0V < VO 6.0V: +9V VO 5.0V: +8 1190(*1) 3125(*2) -40 +85 -40 +150
(*1) : Mounted on glass epoxy board. (76.2x114.3x1.6mm:EIA/JDEC standard size, 2Layers, copper area 100mm2) (*2) : Mounted on glass epoxy board. (76.2x114.3x1.6mm:EIA/JDEC standard size, 4Layers, copper area 100mm2) (4Layers inner foil : 74.2 x 74.2mm Applying a thermal beer hall to a board based on JEDEC standard JESD51-5) OPERATING VOLTAGE VIN=VO + VI-O ~ 9V (In case of VO > 6.0V version) VIN=VO + VI-O ~ 8V (In case of 5.0V < VO 6.0V version) VIN=VO + VI-O ~ 7V (In case of 2.1V VO 5.0V version) VIN=2.3V ~ 7V (In case of VO < 2.1V version)
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Ver.2010-02-08
NJM2819A
ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=4.7F, Co=4.7F(Co=10F : 1.8VVo<2.1V), Ta=25C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. Output Voltage Vo Io=100mA -1.0% +1.0% Quiescent Current IQ Io=0mA, exclude ICONT 500 800 Quiescent Current IQ (OFF) VCONT=0V 1 at Control OFF Output Current Io Vo - 0.3V 2 3 VO>5.0V : VIN=Vo+1V 9V, 5.0V < VO 6.0V : VIN=Vo+1V 8V, 0.1 Line Regulation Vo/VIN VO5.0V : VIN=Vo+1V 7V, Io=100mA Load Regulation 0.05 0.4 Vo/Io Io=0 2.0A 0.14 0.25 2.1V Vo < 2.5V 0.11 0.20 2.5V Vo < 2.8V Dropout Voltage(*2) Io=1.0A VI -O 0.10 0.18 2.8V Vo < 3.4V 0.09 0.16 3.4V Vo 7.0V ein=200mVrms,f=1kHz, Io=100mA, Ripple Rejection RR 65 Vo=3V Version Average Temperature Vo/Ta Ta=0 85C, Io=100mA 50 Coefficient of Output Voltage f=10Hz 80kHz, Io=100mA, Output Noise Voltage VNO 42 Vo=3V Version Control Current ICONT VCONT=1.6V 3 12 Control Voltage for ON-state VCONT(ON) 1.6 Control Voltage for OFF-state VCONT(OFF) 0.6 Io1.5A, Vox0.96 2.3 Minimum Input Voltage VIN (MIN.) Vo<2.1V 1.5AUNIT V A
A A %/V %/A V
dB ppm/C Vrms A V V V V
Ver.2010-02-08
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NJM2819A
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2819ADL3 PowerDissipation
(Topr=-40~+85C,Tj=150C)
3500
Power Dissipation PD(mW)
3000 2500 2000 1500 1000 500 0 -50
on 4 layers board
on 2 layers board
-25
0
25
50
75
100
Temperature : Ta(C)
TEST CIRCUIT
A
VIN
IIN
VIN
VOUT
*3
4.7F
NJM2819A
4.7F
(Ceramic)
IOUT V VOU
A V VCONT
ICONT
CONTROL
GND
*3 : 1.8 Vo<2.6V version : Co=10F (Ceramic)
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Ver.2010-02-08
NJM2819A
TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required:
VIN
4.7F R
VIN
VOUT
*4
VOUT
4.7F
NJM2819A
CONTROL
GND
*4 : 1.8 Vo<2.6V version : Co=10F
Connect control terminal to VIN terminal 2 In use of ON/OFF CONTROL:
VIN
VIN
VOUT
*4
VOUT
4.7F
4.7F R
NJM2819A
CONTROL
GND
*4 : 1.8 Vo<2.6V version : Co=10F
State of control terminal: *"H" output is enabled. *"L" or "open" output is disabled. In the case of using a resistance "R" between VIN and control. The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance "R" is inserted between VIN and the control terminal. The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the resistance "R". The ICONT is temperature dependence as shown in the "Control Current vs. Temperature" characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the VCONT (ON) over the required temperature range.
Ver.2010-02-08
-5-
NJM2819A
Input Capacitance CIN Input Capacitance CIN is required to prevent oscillation and reduce power supply ripple for applications with high power supply impedance or a long power supply line. Use the CIN value of 4.7F greater to avoid the problem. CIN should connect between GND and VIN as short as possible. Output Capacitance CO Output capacitor (Co) is required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influence stability of the regulator. If use a smaller Co, it may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. Therefore, use Co with the recommended capacitance or greater value and connect between Vo terminal and GND terminal with minimal wiring. The recommended capacitance depends on the output voltage. Low voltage regulator requires greater value of the Co. Thus, check the recommended capacitance for each output voltage. Use of a greater Co reduces output noise and ripple output, and also improves transient response of the output voltage against rapid load change. This product is designed to work with any capacitor including a low ESR capacitor for the Co; however, refer "Equivalent Series Resistance vs. Output Current" and choose suitable capacitor. When distance from an IC to load is long, an IC may cause malfunction by wiring capacity and an L ingredient Please use it after having evaluated it enough.
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Ver.2010-02-08
NJM2819A
TYPICAL CHARACTERISTICS
NJM2819A_3.0V Output Voltage vs.Input Voltage 3.4
@:Ta=25C Co=4.7uF(Ceramic)
NJM2819A_3.0V Output Volatage vs.Output Current 4 3.5 3
3.3 3.2 3.1
Io=0A
Output Voltage : Vo (V)
Output Voltage : Vo (V)
2.5 2 1.5 1 0.5 0
@:Ta=25C VIN=4.0V Co=4.7uF(Ceramic)
3
Io=500mA
2.9 2.8
Io=2000mA
2.7 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 Input Voltage : VIN (V)
0
1
2
3
4
5
6
Output Current : Io (A)
NJM2819A_3.0V Ground Pin Current vs.Output Current 5
@:Ta=25C VIN=4.0V Co=4.7uF(Ceramic)
NJM2819A_3.0V Dropout Voltage vs.Output Current 0.40 0.35 D ropout Voltage : dVI_O (V) 0.30 0.25 0.20 0.15 0.10 0.05
Ground Pin Current : I GND (mA
4
@:Ta=25C Vin=2.5V Co=2.2uF(Ceramic)
3
2
1
0 0 500 1000 1500 2000 2500 3000 Output Currnet : Io (mA)
0.00 0 500 1000 1500 2000 2500 3000 Output Current : Io (mA)
NJM2819A_3.0V Control Current vs.Control Voltage
50 @:Ta=25C VIN=4.0V Co=4.7uF(Ceramic) Io=500mA
4 3.5 3
NJM2819A_3.0V Output Voltage vs. Control Voltage
@:Ta=25C VIN=4.0V Co=4.7uF(Ceramic) Io=500mA
40
Control Current (uA)
30
Output Voltage (V)
2.5 2 1.5
Rc=50k
Rc=100k
20 Rc=50k 10 Rc=0
Rc=100k
1
Rc=0
0.5
0 0 0.5 1 1.5 2 2.5 3 3.5 4 Control Voltage (V)
0 0 0.5 1 1.5 2 2.5 Control Voltage (V)
Ver.2010-02-08
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NJM2819A
NJM2819A_3.0V Load Regulation vs.Output Current 0
Peak Output Current : Io MAX (mA) 6
NJM2819A_3.0V Peak Output Current vs.Input Voltage
Load Regulation : dVo/dIo (mV)
-10
5
4
-20
3
-30
2
-40
@:Ta=25C Vin=2.5V Co=4.7uF(Ceramic)
1
@:Ta=25C Co=4.7uF(Ceramic)
-50 0 1000 2000 3000 4000 Output Current : Io (mA)
0 4 6 8 Input Voltage : VIN (V) 10 12
NJM2819A_3.0V Quiescent Current vs.Input Voltage
2000
NJM2819A_3.0V Output Noize Voltage vs.Output Current
100 @Ta=25C VIN=4.0V Cin=4.7F(Ceramic) Co=4.7F(Ceramic)
1500 Quiescent Current:IQ (A)
O utput Nois e Voltage :Vn (Vrms )
@:Ta=25C Output is open Co=4.7uF(Ceramic) Inculding Icont
80
60
1000
40
LPH:80kHz
500
20
0 0 2 4 6 8 10 12 Input Voltage:VIN (V)
0 0.001
0.01
0.1
1
10
100
1000
10000
Output Current :Io (mA)
NJM2819A_3.0V Ripple Rejection Ratio vs.Frequency
NJM2819A_3.0V Ripple Rejection vs.Output Current 100 90 80
f=1kHz
100 90 Ripple Rejection :RR(dB) 80 70 60 50 40 30 20 10 0 0.01
@:Ta=25C VIN=4.0V ein=200mVrms Cin=4.7F Co=4.7F Io=100mA
Ripple Rejection :RR(dB
Io=0A
70 60 50 40 30 20
@:Ta=25C VIN=4.0V ein=200mVrms Cin=4.7F(Ceramic) Co=4.7F(Ceramic) f=10kHz
Io=2000mA
10 0
0.1
1 Frequency :f (kHz)
10
100
0.001
0.1
10
1000
Output Current :Io(mA)
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Ver.2010-02-08
NJM2819A
NJM2819A_3.0V Equivalent Serise Resistance vs. Output Current
100 @Ta=25C VIN=4.0V Co=4.7uF(Ceramic) 10
NJM2819A_3.0V Dropout Voltage vs.Temperature 0.25 @:Io=1000mA Co=4.7uF(Ceramic) Dropout Voltage : dVi-o(V) 0.20
EquiValent Serise Resistance:ESR []
0.15
1
STABLE REGION
0.10
0.1
0.05
0.00
0.01 0.001 0.01 0.1 1 10 100 1000 10000 Output Current : Io(mA)
-50
0
50 Temperature : (C)
100
150
3.05 3.04 Output Voltage : Vo(V) 3.03 3.02 3.01 3.00 2.99 2.98 2.97 2.96 2.95 -50
NJM2819A_3.0V Output Voltage vs.Temperature
NJM2819A_3.0V Control Voltage vs.Temperature 1.60 1.40 Control Voltage :Vcont_OFF 1.20 1.00 0.80 0.60 0.40 0.20 0.00 @:VIN=4.0V Output is Open Co=4.7uF(Ceramic)
@:VIN=4.0V Io=100mA Co=4.7uF(Ceramic)
0
50 Temperature : (C)
100
150
-50
0
50 Temperature : (C)
100
150
NJM2819A_3.0V Control Current vs.Temperature 12.00 10.00 8.00 6.00 4.00 2.00 0.00 -50 0 50 Temperature : (C) 100 150 @:VIN=4.0V Vcont=1.6V Co=4.7uF(Ceramic)
900 800 Quiescent Current : I Q(uA)
NJM2819A_3.0V Quiescent Current vs.Temperature
Control current : Icnt(uA)
700 600 500 400 300 200 100 0 -50 0 50 Temperature : (C) 100 150 @:VIN=4.0V Output is Open Co=4.7uF(Ceramic)
Ver.2010-02-08
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NJM2819A
NJM2819A_3.0V Short Circuit Current vs.Temperature 1000 900 800 Short Circuit Current : Isc(mA) 700 600 500 400 300 200 100 0 -50 0 50 Temperature : (C) 100 150 @:VIN=4.0V Output is short to Ground Co=4.7uF(Ceramic)
0.10 Line Regulation : dVo/dVin(mV) 0.08 0.06 0.04 0.02 0.00 -0.02 -0.04 -0.06 -0.08 -0.10 -50
NJM2819A_3.0V Line Regulation vs.Temperature
@:VIN=4.0-9.0V Io=100mA Co=4.7uF(Ceramic)
0
50 Temperature : (C)
100
150
0.30 Load Regulation : dVo/dIo(mV)
NJM2819A_3.0V Load Regulation vs.Temperature
NJM2819A_3.0V Output Peak Current vs.Temperature 4500 Output Peak Current : Io_peak(mA) 4000 3500 3000 2500 2000 1500 1000 500 0 -50 0 50 Temperature : (C) 100 150 @:VIN=4.0V Co=4.7uF(Ceramic)
0.09 @:VIN=4.0 Io=0-2000mA Co=4.7uF(Ceramic) -0.12 -50 0 50 Temperature : (C) 100 150
NJM2819A_3.0V Output Voltage vs.Temperature 4.00 3.50 Output Voltage : Vo(V) 3.00 2.50 2.00 1.50 1.00 0.50 0.00 -50 0 50 100 150 200 @:VIN=4.0V Io=100mA Co=4.7uF(Ceramic)
Temperature : (C)
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Ver.2010-02-08
NJM2819A
NJM2819A_3.0V ON/OFF Transient Response without Load
7 6 10 5 0 Control Voltage 4 3 2 1 0 -1 0 Output Voltage @:Ta=25C VIN=4.0V Io=0mA Co=4.7uF(Ceramic) -5 -10 -15 -20 -25 -30 4 8 12 16 20
NJM2819A_3.0V ON/OFF Transient Response
7 6 10 5 Control Voltage
@:Ta=25C VIN=4.0V Io=100mA Co=4.7uF(Ceramic)
Output Voltage : Vo(V)
Output Voltage : Vo(V)
5
control Voltage : Vcont(V)
5 4 3 2 1 0 -1 0
0 -5 -10 -15 -20 -25 -30
Output Voltage
4
8
12
16
20
Time : t(s)
Time : t(ms)
3.10 3.08
NJM2819A_3.0V Load Transient Response
1500 1000
NJM2819A_3.0V Input Transient Response
1.80 1.75 7 6 5 4 3 2 1 0 -1 0 40 80 120 160 200
Output Voltage : Vo(V)
3.06 3.04 3.02 3.00 2.98 2.96 2.94
Output Current
500 0 -500 -1000
Output Current : Io(mA)
Output Voltage : Vo(V)
1.70 1.65 1.60 1.55 1.50 1.45 1.40
Input Voltage
@:Ta=25C VIN=4.0V Io=100mA Cin=4.7uF(Ceramic) Co=4.7uF(Ceramic)
Output Voltage
Output Voltage
@:Ta=25C VIN=4.0V Io=500-1000mA Co=4.7uF(Ceramic)
-1500 -2000 -2500
0
40
80
120
160
200
Time : t(ms)
Time : t(s)
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
Ver.2010-02-08
- 11 -
control Voltage : Vcont(V)
control Voltage : Vcont(V)

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