POWER MANAGEMENT
Description
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.
600mA Low Dropout Positive
Voltage Regulator
Features
u
u
u
u
u
u
u
u
u
Low dropout performance, 1.3V max.
Full current rating over line and temperature
Fast transient response
鹵2% total output regulation over line, load
and temperature
Adjust pin current max. 90碌A(chǔ) over temperature
Adjustable or fixed output voltages
Line regulation 0.2% max.
Load regulation 0.4% max.
SOT-223 package
SC1202 & SC1202A
Applications
u
Low voltage microcontrollers
u
Microprocessor I/O supplies
u
5V to 3.3V conversion for memory, ASIC, custom
circuits, etc.
Typical Application Circuits
Fixed Voltage Regulator
U1
VIN > 4.75V
3
IN
SC1202-3.3
2
TAB
OUT
VOUT = 3.3V
+
C1
10uF Tant.
+
GND
1
C2
10uF Tant.
Adjustable Voltage Regulator
U1
VIN > 4.75V
3
IN
TAB
SC1202
OUT
2
VOUT = 3.45V
+
C1
10uF Tant.
ADJ
1
R1
133 Ohm, 1%
+
C2
10uF Tant.
R2
232 Ohm, 1%
R2
錚?/div>
錚?/div>
V
OUT
=
V
REF
鈥?錚?/div>
1
+
錚?+
I
ADJ
鈥?/div>
R 2
R1
錚?/div>
錚?/div>
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
Revision 8/30/2000
1
www.semtech.com
SC1202CST-3.3TR相關(guān)型號PDF文件下載
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