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SC1202_08 Datasheet, PDF (1/6 Pages) Semtech Corporation – 600mA Low Dropout Positive Voltage Regulator | |||
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SC1202
600mA Low Dropout Positive
Voltage Regulator
POWER MANAGEMENT
Description
Features
The SC1202 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at full rated current.
Additionally, the SC1202 series provides excellent
regulation over variations due to line, load and
temperature.
Outstanding features include low dropout performance
at rated current, fast transient response, internal
current limiting and thermal shutdown protection of the
output device. The SC1202 series are three terminal
regulators available in the surface mount SOT-223
package.
 Low dropout performance, 1.3V max.
 Full current rating over line and temperature
 Fast transient response
 ±2% total output regulation over line, load
and temperature
 Adjust pin current max. 90µA over temperature
 Adjustable or fixed output voltages
 Line regulation 0.2% max.
 Load regulation 0.4% max.
 SOT-223 package. Fully WEEE and RoHS compliant
Applications
 Low voltage microcontrollers
 Microprocessor I/O supplies
 5V to 3.3V conversion for memory, ASIC, custom
circuits, etc.
Typical Application Circuits
Fixed Voltage Regulator
VIN > 4.75V
U1
3
IN
SC1202-3.3
TAB
2
OUT
+ C1
10uF Tant.
GND
1
Adjustable Voltage Regulator
VIN > 4.75V
U1
3 IN
+ C1
10uF Tant.
SC1202
TAB
2
OUT
ADJ
1
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
VOUT = 3.3V
+ C2
10uF Tant.
R1
133 Ohm, 1%
VOUT = 3.45V
+ C2
10uF Tant.
R2
232 Ohm, 1%
VOUT
=
VREF
â¢
1 +
ï£
R2
R1


+
IADJ
⢠R2
Revision: June 11, 2008
1
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