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
http://onsemi.com
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.
TO–220
THREE LEAD
T SUFFIX
Adjustable
Output
Tab = V
OUT
CASE 221A
Pin 1. Adj
2. V
OUT
1
3. V
2
IN
3
2
D PAK
Fixed
Output
3–PIN
DP SUFFIX
CASE 418E
Tab = V
OUT
1
1
Pin 1. GND
2
3
The CS5203A is pin compatible with the LT1085 family of linear
regulators but has lower dropout voltage.
2. V
3. V
OUT
IN
2
D PAK
2
The regulators are available in TO–220 and surface mount D PAK
3–PIN
DPS SUFFIX
CASE 418F
packages.
2
3
Features
• Output Current to 3.0 A
ORDERING INFORMATION*
• Output Trimmed to ±1.0%
• Dropout Voltage 1.05 V @ 3.0 A
• Fast Transient Response
• Fault Protection Circuitry
– Thermal Shutdown
Device
Package
Shipping
50 Units/Rail
50 Units/Rail
CS5203A–1GT3
TO–220†
2
CS5203A–1GDP3
CS5203A–1GDPR3
CS5203A–2GT3
D PAK†
2
D PAK† 750 Tape & Reel
– Overcurrent Protection
– Safe Area Protection
TO–220†
50 Units/Rail
50 Units/Rail
2
CS5203A–2GDP3
CS5203A–2GDPR3
D PAK†
2
D PAK† 750 Tape & Reel
V
OUT
2
CS5203A–2GDPSR3 D PAK† 750 Tape & Reel
V
IN
CS5203A–3GT3
TO–220†
50 Units/Rail
50 Units/Rail
2
CS5203A–3GDP3
CS5203A–3GDPR3
D PAK†
Output
Current
Limit
2
D PAK† 750 Tape & Reel
2
CS5203A–3GDPSR3 D PAK† 750 Tape & Reel
Thermal
Shutdown
–
+
Error
Amplifier
CS5203A–5GT3
TO–220†
50 Units/Rail
*Additional ordering information can be found on page 8
of this data sheet.
†TO–220 is 3–pin, straight leaded. D PAK are all 3–pin.
Adj
Bandgap
2
DEVICE MARKING INFORMATION
See general marking information in the device marking
Figure 1. Block Diagram – CS5203A–1
section on page 8 of this data sheet.
Semiconductor Components Industries, LLC, 2002
1
Publication Order Number:
February, 2002 – Rev. 4
CS5203A/D