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  ON Semiconductor Electronic Components Datasheet  

CS5203A-1 Datasheet

3.0 A Adjustable/ and Fixed 1.5 V/ 3.3 V and 5.0 V Linear Regulators

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CS5203A−1, CS5203A−2,
CS5203A−3, CS5203A−5
3.0 A Adjustable, and
Fixed 1.5 V, 3.3 V and 5.0 V
Linear Regulators
The CS5203A series of linear regulators provides 3.0 A at
adjustable and fixed voltages with an accuracy of ±1.0% and ±2.0%
respectively. The adjustable version uses two external resistors to set
the output voltage within a 1.25 V to 13 V range.
The regulators are intended for use as post regulators and
microprocessor supplies. The fast loop response and low dropout
voltage make these regulators ideal for applications where low voltage
operation and good transient response are important.
The circuit is designed to operate with dropout voltages as low as
1.0 V depending on the output current level. The maximum quiescent
current is only 10 mA at full load.
The regulators are fully protected against overload conditions with
protection circuitry for Safe Operating Area (SOA), overcurrent and
thermal shutdown.
The CS5203A is pin compatible with the LT1085 family of linear
regulators but has lower dropout voltage.
The regulators are available in TO−220−3 and surface mount
D2PAK−3 packages.
Features
Pb−Free Package is Available
Output Current to 3.0 A
Output Trimmed to ±1.0%
Dropout Voltage 1.05 V @ 3.0 A
Fast Transient Response
Fault Protection Circuitry
Thermal Shutdown
Overcurrent Protection
Safe Area Protection
http://onsemi.com
12 3
123
123
TO−220
THREE LEAD
T SUFFIX
CASE 221A
D2PAK−3
DP SUFFIX
CASE 418AB
D2PAK−3
(Short Lead)
DPS SUFFIX
CASE 418F
Adjustable
Output
Tab = VOUT
Pin 1. Adj
2. VOUT
3. VIN
Fixed
Output
Tab = VOUT
Pin 1. GND
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.
VOUT
VIN
Thermal
Shutdown
Bandgap
Output
Current
Limit
− + Error
Amplifier
Adj
Figure 1. Block Diagram − CS5203A−1
© Semiconductor Components Industries, LLC, 2004
June, 2004 − Rev. 7
1
Publication Order Number:
CS5203A/D


  ON Semiconductor Electronic Components Datasheet  

CS5203A-1 Datasheet

3.0 A Adjustable/ and Fixed 1.5 V/ 3.3 V and 5.0 V Linear Regulators

No Preview Available !

CS5203A−1, CS5203A−2, CS5203A−3, CS5203A−5
VOUT
VIN
Thermal
Shutdown
Bandgap
Output
Current
Limit
− + Error
Amplifier
GND
Figure 2. Block Diagram − CS5203A−2, −3, −5
MAXIMUM RATINGS
Parameter
Value
Unit
Supply Voltage, VCC
Operating Temperature Range
17
−40 to +70
V
°C
Junction Temperature
150 °C
Storage Temperature Range
−60 to +150 °C
Lead Temperature Soldering:
Wave Solder (through hole styles only) (Note 1)
Reflow (SMD styles only) (Note 2)
260 Peak
230 Peak
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. 10 second maximum.
2. 60 second maximum above 183°C.
ELECTRICAL CHARACTERISTICS (CIN = 10 mF, COUT = 22 mF Tantalum, VIN − VOUT = 3.0 V, VIN 15 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 (CS5203A−1)
Reference Voltage (Notes 3 and 4)
Line Regulation
Load Regulation (Notes 3 and 4)
Dropout Voltage (Note 5)
Current Limit
VIN − VOUT = 1.5 V; VAdj = 0 V,
10 mA IOUT 3.0 A
1.5 V VIN − VOUT 6.0 V; IOUT = 10 mA
VIN − VOUT = 1.5 V; 10 mA IOUT 3.0 A
IOUT = 3.0 A
VIN − VOUT = 3.0 V; TJ 25°C
VIN − VOUT = 15 V
1.241
(−1%)
3.2
1.254
0.04
0.03
1.05
5.5
2.5
1.266
(+1%)
0.20
0.4
1.15
V
%
%
V
A
A
Minimum Load Current
Adjust Pin Current
VIN − VOUT = 7.0 V
− 1.2 6.0 mA
− 50 100 mA
Adjust Pin Current Change
1.5 V VIN − VOUT 4.0 V;
10 mA IOUT 3.0 A
− 0.2 5.0 mA
Thermal Regulation
30 ms pulse; TA = 25°C
− 0.003 − %/W
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 thermal gradients or 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.
http://onsemi.com
2


Part Number CS5203A-1
Description 3.0 A Adjustable/ and Fixed 1.5 V/ 3.3 V and 5.0 V Linear Regulators
Maker ON Semiconductor
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