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SS8047 2.5V 1A Positive Voltage Regulator
Features
Output current in excess of 1A Output voltage accuracy +3%/-1% Quiescent current, typically 600A Internal short-circuit current-limit Internal over-temperature protection
General Description
The SS8047 positive 2.5V voltage regulator features the ability to source 1A of output current. The typical quiescent current is 0.6mA. Familiar regulator features such as over-temperature and over-current protection circuits are provided to prevent it from being damaged by abnormal operating conditions.
Applications
n n n n n
PC motherboard ADSL/Cable Modem Set -Top Box LAN switch/Hub Router
Ordering Information
SS8047GTXXXX
The SS8047 is only available with Pb-free lead finish.
Packing Type Pin Option Package Type
PACKAGE TYPE
GT3 : TO 220 Pb-free GT4 : TO 252 Pb-free GT5 : TO 263 Pb-free GT6 : SOT 223 Pb-free
PIN OPTION
1 1 : V OUT 2 : V OUT 3 : GND 4 : GND 5 : V IN 6 : V IN 2 GND V IN V OUT V IN GND V OUT 3 V IN GND V IN V OUT V OUT GND
PACKING
TR : Tape & Reel TB : Tubes
Typical Application
[Note 4] : Type of COUT
IO VIN C1 1F
Pin Configuration
SS8047
IQ
VOUT C OUT 10F
Top View
Top View
Top View
1
2
3
1
2
3
1
2
3
TO-220
TO-252 and TO-263
SOT-223
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SS8047
Absolute Maximum Ratings
(Note 1) Input Voltage........................................................................................................................7V Power Dissipation Internally Limited (Note 2) Maximum Junction Temperature............................................................................................150C Storage Temperature Range.....................................................................................................-65C TJ +150C Lead Temperature, Time for Wave Soldering TO 220 Package...................................................................................................................260C, 10s TO 252, TO 263, SOT 223 Pac kage........................................................................................260C, 4s Continuous Power Dissipation (TA = + 25C) SOT 223(1) ...........................................................................................................................0.8W TO 252(1) .............................................................................................................................1.0W TO 263(1) .............................................................................................................................1.6W
Note (1): See Recommended Minimum Footprint.
Operating Conditions
(Note 1) Input Voltage......................................................................................................................3.3V~6V Temperature Range.............................................................................................................0C TJ 125C
Electrical Characteristics
VIN =5V, IO = 1A, CIN = 1F, COUT =10 F, All specifications apply for TA = TJ = 25C. [Note 3] PARAMETER
Output Voltage Line Regulation Load Regulation Output Impedance Quiescent Current Ripple Rejection Dropout Voltage Short Circuit Current Over Temperature
CONDITIONS
V IN = 5V, 10mA < IO < 1A V IN = 3.3V, 10mA < IO < 500mA 3.3V < V IN < 6V, IO = 10mA V IN = 5V, 10mA < IO < 1A V IN = 3.3V, 10mA < IO < 500mA 200mA DC and 100mA AC, fo = 120Hz V IN = 5V f i = 120Hz,V ripple =2V P-P , Io = 100mA IO = 1A IO = 500mA IO = 100mA
MIN
2.475
TYP
2.50 3 35 25 80 0.6 46 1.15 420 200 1.6 150
MAX
2.575 30 50
UNITS
V mV mV mV m mA dB V mV mV A
C
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics. Note 2: The maximum power dissipation is a function of the maximum junction temperature, TJmax ; total thermal resistance, JA, and ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is Tjmax-TA / JA. If this dissipation is exceeded, the die temperature will rise above 150C and IC will go into thermal shutdown. For the SS8047 in SOT 223 package, JA is 156C/W; in TO 263 package, JA is 75C/W, and in the TO 252 package, JA is 125C/W (See recommend minimum footprint). The safe operation in SOT 223,TO 252 & TO 263 package, it can see "Typical Performance Characteristics" (Safe Operating Area). Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Note4: The type of output capacitor should be tantalum or aluminum.
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SS8047
Definitions
Dropout Voltage The input/output Voltage differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when the output drops 100mV below its nominal value. Dropout voltage is affected by junction temperature, load current and minimum input supply requirements. Line Regulation The change in output voltage for a change in input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. Load Regulation The change in output voltage for a change in load current at constant chip temperature. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. Maximum Power Dissipation The maximum total device dissipation for which the regulator will operate within specifications. Quiescent Bias Current Current which is used to operate the regulator chip and is not delivered to the load.
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SS8047
Typical Performance Characteristics
(V IN= +5V, CIN=1F, COUT=10F, TA=25C, unless otherwise noted.)
Line Transient
Load Transient
Ch1: Vin (offset=5.0V) Ch2: Vout (offset=2.50V) CIN = 1uF Iout=100mA
Ch1: Iout (1A/div) Ch2: Vout (offset=2.50V)
Output Voltage vs. Load Current
2.600 1200 1100
Dropout Voltage vs. Load Current
Dropout Voltage (mV)
0 100 200 300 400 500 600 700 800 900 1000
2.580
1000 900 800 700 600 500 400 300 200 100
Ootput Voltage (V)
2.560
2.540
2.520
2.500
2.480
0
0 100 200 300 400 500 600 700 800 900 1000
Load Current (mA)
Load Current (mA)
Ground Current vs. Load Current
2.00 1.80
Ground Current (mA)
1.60 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00
0 100 200 300 400 500 600 700 800 900 1000
Load Current (mA)
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SS8047
Typical Performance Characteristics
(V IN= +3.3V, CIN=1F, COUT=10F, TA=25C, unless otherwise noted.)
Line Transient
Load Transient
Ch1: Vin (offset=3.3V) Ch2: Vout (offset=2.50V) CIN = 1uF Iout=100mA
Ch1: Iout (400mA/div) Ch2: Vout is AC coupled
Output Voltage vs. Load Current
2.550 2.545 500 450
Dropout Voltage vs. Load Current
Ootput Voltage (V)
2.540 2.535 2.530 2.525 2.520 2.515 2.510 2.505 2.500 0 50 100 150 200 250 300 350 400 450 500 550 600
Dropout Voltage (mV)
400 350 300 250 200 150 100 50 0 0 50 100 150 200 250 300 350 400 450 500 550 600
Load Current (mA)
Load Current (mA)
Ground Current vs. Load Current
2.00 1.80
Ground Current (mA)
1.60 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 0 100 200 300 400 500 600
Load Current (mA)
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SS8047
Safe Operating Area of SOT-223
1200
T A=25C,Still Air
Power Dissipation of SOT-223
1.0 0.9 0.8
1000
Output Current (mA)
800 600 400 200 0 1.2
Maximum Recommended Output Current TA=25 J TA=55 J TA=85 J
Power Dissipation (W)
1oz Copper on SOT-223 Package Mounted on recommended mimimum footprint (R c A=156C/W) J
0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0
Still Air 1oz Copper on SOT-223 Package Mounted on recommend mimimum footprint (R c A=156C/W) J
1.6
2.0
2.4
2.8
3.2
3.6
4.0
25
35
45
55
65
75
85
95 105 115 125
Input-Output Voltage Differential VIN-V OUT (V) Note: VI N(max) <= 6.5V
Amibent Temperature TA (C)
Safe Operating Area of TO-252
1200
T A=25C,Still Air
Power Dissipation of TO-252
1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0
Still Air 1oz Copper on TO-252 Package Mounted on recommend mimimum footprint (R c A=125C/W) J
1000
Output Current (mA)
1oz Copper on TO-252 Package Mounted on recommended mimimum footprint (R c A=125C/W) J Maximum Recommended Output Current
TA=25 J
600 400 200 0 1.2 1.6 2.0 2.4 2.8 3.2
TA=55 J TA=85 J
3.6
4.0
Power Dissipation (W)
800
25
35
45
55
65
75
85
95 105 115 125
Input-Output Voltaage Differential VIN-VOUT (V) Note: VIN(max) <= 6.5V
Amibent Temperature TA (C)
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SS8047
Safe Operating Area of TO-263
1200
TA=25C,Still Air
Power Dissipation of TO-263
2.0 1.8 1.6
1000
Maximum Recommended Output Current
Power Dissipation (W)
Output Current (mA)
800 600 400 200 0 1.2 1.6 2.0 2.4 2.8 3.2
1oz Copper on TO-263 Package Mounted on recommended mimimum footprint (R c A=75C/W) J
TA=25 J TA=55 J TA=85 J
1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0
Still Air 1oz Copper on TO-263 Package Mounted on recommend mimimum footprint (R c =75C/W) JA
3.6
4.0
25
35
45
55
65
75
85
95 105 115 125
Input-Output Voltaage Differential VIN-VOUT (V)
Amibent Temperature TA (C)
Note: VIN(max) <= 6.5V
Recommend Minimum Footprint
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SS8047
Package Information
The SS8047 is only available with Pb-free lead finish.
E A E1 E1 R F d D
D1
I
L
e b e1 b1
C A1
TO-220 (T3) Package SYMBOLS
A A1 b b1 C D D1 d E E1 e e1 F I L
MILLIMETERS MIN
4.318 2.46 0.69 1.143 0.304 3.429 8.53 2.62 9.906 2.84 2.29 4.83 1.143 3.454 13.589
INCHES MAX
4.826 2.72 0.94 1.397 0.460 3.683 9.04 2.87 10.40 5.13 2.79 5.33 1.397 3.962 14.351
MIN
0.170 0.097 0.027 0.045 0.012 0.135 0.336 0.103 0.390 0.112 0.090 0.190 0.045 0.136 0.535
MAX
0.190 0.107 0.037 0.055 0.018 0.145 0.356 0.113 0.410 0.202 0.110 0.210 0.055 0.156 0.565
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SS8047
E A E1 L1 F
D
H
L2 b e1 e
A1 L3
C
The SS8047 is only available with Pb-free lead finish.
TO-252 (T4) Package MILLIMETERS MIN.
2.19 0.89 0.64 0.46 5.97 6.35 5.21 2.26BSC 3.96 0.46 0.89 0.64 2.40 9.40 0 5.18 0.58 2.03 1.02 2.80 10.40 4 0.156 0.018 0.035 0.025 0.095 0.370 0
SYMBOL
A A1 b C D E E1 e e1 F L1 L2 L3 H
INCHES MAX.
2.38 1.27 0.89 0.58 6.22 6.73 5.46
MIN.
0.086 0.035 0.025 0.018 0.235 0.250 0.205 0.09BSC
MAX.
0.094 0.050 0.035 0.023 0.245 0.265 0.215 0.204 0.023 0.080 0.040 0.110 0.410 4
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SS8047
A D B1 C
13 (4X )
H
E
L e e1 L2
The SS8047 is only available with Pb-free lead finish.
13 (4X )
A1 B
SOT-223 (T6) Package SYMBOLS
A A1 B B1 C D E e e1 H L L2 a 0 6.70 0.90 MIN 0.06 BSC 10 0
MILLIMETERS MIN
1.55 0.02 0.60 2.90 0.24 6.30 3.30 2.30 BSC 4.60 BSC 7.30 0.264
INCHES MAX
1.80 0.12 0.80 3.10 0.32 6.70 3.70
MIN
0.061 0.0008 0.024 0.114 0.009 0.248 0.130 0.090 BSC 0.181 BSC
MAX
0.071 0.0047 0.031 0.122 0.013 0.264 0.146
0.287 0.036 MIN 0.0024 BSC 10
Package Orientation
Feed Direction T O 2 5 2 B 6 3 P a c k a g e O r i e n t a t i o n 2
Feed Direction SOT 223 Package Orientation
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SS8047
A E A1 L3
D
H C
L1
e L2 e1 b b1 A2
L
The SS8047 is only available with Pb-free lead finish.
TO-263 (T5) Package SYMBOLS
A A1 A2 b b1 C D E e e1 H L L1 L2 L3
MILLIMETERS MIN
4.30 1.22 2.45 0.69 1.22 0.36 8.64 9.70 2.29 4.83 14.60 4.70 1.20 2.24 1.40MAX
INCHES MAX
4.70 1.32 2.69 0.94 1.40 0.56 9.652 10.54 2.79 5.33 15.78 5.84 1.778 2.84
MIN
0.169 0.048 0.104 0.027 0.048 0.014 0.340 0.382 0.090 0.190 0.575 0.185 0.047 0.088 0.055MAX
MAX
0.185 0.055 0.106 0.037 0.055 0.022 0.380 0.415 0.110 0.210 0.625 0.230 0.070 0.111
Information furnished by Silicon Standard Corporation is believed to be accurate and reliable. However, Silicon Standard Corporation makes no guarantee or warranty, express or implied, as to the reliability, accuracy, timeliness or completeness of such information and assumes no responsibility for its use, or for infringement of any patent or other intellectual property rights of third parties that may result from its use. Silicon Standard reserves the right to make changes as it deems necessary to any products described herein for any reason, including without limitation enhancement in reliability, functionality or design. No license is granted, whether expressly or by implication, in relation to the use of any products described herein or to the use of any information provided herein, under any patent or other intellectual property rights of Silicon Standard Corporation or any third parties.
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