TC1265_06 Datasheet, PDF (1/18 Pages) Microchip Technology – 800 mA Fixed-Output CMOS LDO with Shutdown

TC1265
800 mA Fixed-Output CMOS LDO with Shutdown
Features
• Very Low Dropout Voltage
• 800 mA Output Current
• High Output Voltage Accuracy
• Standard or Custom Output Voltages
• Overcurrent and Overtemperature Protection
• SHDN Input for Active Power Management
• ERROR Output Can Be Used as a Low Battery
Detector (SOIC only)
Applications
• Battery-operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHS Phones
• Linear Post-Regulators for SMPS
• Pagers
Typical Application
V_IN
V_IN
V_OUT
+
C₁
V_OUT
TC1265
1 µF
GND
SHDN
SHDN
Description
The TC1265 is a fixed-output, high-accuracy (typically
±0.5%) CMOS low dropout regulator. Designed
specifically for battery-operated systems, the TC1265’s
CMOS construction eliminates wasted ground current,
significantly extending battery life. Total supply current
is typically 80 µA at full load (20 to 60 times lower than
in bipolar regulators).
Key features of the TC1265 include ultra low noise
operation, very low dropout voltage (typically 450 mV
at full load) and fast response to step changes in load.
The TC1265 incorporates both overtemperature and
overcurrent protection. The TC1265 is stable with an
output capacitor of only 1 µF and has a maximum
output current of 800 mA. It is available in 8-Pin SOIC,
5-Pin TO-220 and 5-Pin DDPAK packages.
Package Type
5-Pin DDPAK
5-Pin TO-220
Front View
Tab Is GND
Tab Is GND
TC1265
TC1265
123 45
12345
V_OUT
GND
NC
BYPASS
8-Pin SOIC
1
8
2
7
TC1265
3
6
4
5
V_IN
NC
SHDN
ERROR
© 2006 Microchip Technology Inc.
DS21376D-page 1