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CS5203-1 Datasheet

3.0 A Adjustable Linear Regulator

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CS5203−1
3.0 A Adjustable Linear
Regulator
The CS52031 linear regulator provides 3.0 A at adjustable output
voltages with an accuracy of ±1.5 %. The device uses two external
resistors to set the output voltage within a 1.25 V to 5.5 V range.
The regulator is intended for use as a post regulator and
microprocessor supply. The fast loop response and low dropout
voltage make this regulator ideal for applications where low voltage
operation and good transient response are important.
The circuit is designed to operate with dropout voltages less than 1.4 V
at 3.0 A output current. Device protection includes overcurrent and
thermal shutdown.
The CS52031 is pin compatible with the LT1085 family of linear
regulators but has lower dropout voltage.
The regulator is available in TO2203 and surface mount D2PAK3
packages.
Features
Output Current to 3.0 A
Output Accuracy to ±1.5% Over Temperature
Dropout Voltage (typical) 1.2 V @ 3.0 A
Fast Transient Response
Fault Protection
Current Limit
Thermal Shutdown
5.0 V
VIN VOUT
CS52031
Adj
10 mF
5.0 V
0.1 mF
5.0 V
124 W
1.0%
200 W
1.0%
3.3 V @ 3.0 A
22 mF
5.0 V
http://onsemi.com
12 3
123
TO2203
T SUFFIX
CASE 221A
D2PAK3
DP SUFFIX
CASE 418AB
Tab = VOUT
Pin 1. Adj
2. VOUT
3. VIN
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 8 of this data sheet.
Figure 1. Applications Diagram
© Semiconductor Components Industries, LLC, 2006
September, 2006 Rev. 8
1
Publication Order Number:
CS52031/D


  ON Semiconductor Electronic Components Datasheet  

CS5203-1 Datasheet

3.0 A Adjustable Linear Regulator

No Preview Available !

CS52031
MAXIMUM RATINGS*
Supply Voltage, VIN
Operating Temperature Range
Junction Temperature
Storage Temperature Range
ESD Damage Threshold
Lead Temperature Soldering:
Parameter
1. 10 second maximum.
2. 60 second maximum above 183°C
*The maximum package power dissipation must be observed.
Wave Solder (through hole styles only) Note 1
Reflow (SMD styles only) Note 2
Value
7.0
40 to +70
150
60 to +150
2.0
260 Peak
230 Peak
Unit
V
°C
°C
°C
kV
°C
°C
ELECTRICAL CHARACTERISTICS (CIN = 10 mF, COUT = 22 mF Tantalum, VOUT + VDROPOUT < VIN < 7.0 V, 0°C TA 70°C,
TJ +150°C, unless otherwise specified, Ifull load = 3.0 A)
Characteristic
Test Conditions
Min Typ Max Unit
Adjustable Output Voltage
Reference Voltage (Notes 3 and 4)
VIN VOUT = 1.5 V; VAdj = 0 V
10 mA IOUT 3.0 A
1.235
(1.5%)
1.254
1.273
(+1.5%)
V
Line Regulation
Load Regulation (Notes 3 and 4)
Dropout Voltage (Note 5)
Current Limit
Minimum Load Current (Note 6)
Adjust Pin Current
Thermal Regulation (Note 7)
Ripple Rejection (Note 7)
2.0 V VIN VOUT 5.75 V; IOUT = 10 mA
VIN VOUT = 2.0 V; 10 mA IOUT 3.0 A
IOUT = 3.0 A
VIN VOUT = 3.0 V; TJ 25°C
VIN = 7.0 V, VAdj = 0 V
VIN VOUT = 3.0 V; IOUT = 10 mA
30 ms Pulse, TA = 25°C
f = 120 Hz; IOUT = 3.0 A; VIN VOUT = 3.0 V;
VRIPPLE = 1.0 VPP
0.02 0.20 %
0.04 0.4
%
1.15 1.40
V
3.1 4.6 A
0.6 2.0 mA
50 100 mA
0.002
0.020
%/W
80 dB
Thermal Shutdown (Note 8)
150 180 210 °C
Thermal Shutdown Hysteresis (Note 8)
− − 25 °C
3. Load regulation and output voltage are measured at a constant junction temperature by low duty cycle pulse testing. Changes in output
voltage due to temperature changes must be taken into account separately.
4. Specifications apply for an external Kelvin sense connection at a point on the output pin 1/4” from the bottom of the package.
5. Dropout voltage is a measurement of the minimum input/output differential at full load.
6. Minimum load current is defined as the minimum output current required to maintain regulation. The reference resistor in the output divider
is usually sized to fulfill the minimum load current requirement.
7. Guaranteed by design, not 100% functionally tested in production.
8. Guaranteed by design, not 100% parametrically tested in production. However, every part is subject to functional testing for thermal
shutdown.
PACKAGE PIN DESCRIPTION
Package Pin Number
TO2203
D2PAK3
11
22
33
Pin Symbol
Adj
VOUT
VIN
Function
Adjust pin (low side of the internal reference).
Regulated output voltage (case).
Input voltage.
http://onsemi.com
2


Part Number CS5203-1
Description 3.0 A Adjustable Linear Regulator
Maker ON Semiconductor
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