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TC1268

Microchip Technology
Part Number TC1268
Manufacturer Microchip Technology
Description 500mA Fixed Output / Fast Response CMOS LDO
Published Aug 31, 2005
Detailed Description TC1268 500mA Fixed Output, Fast Response CMOS LDO with Shutdown Features • • • • • • • • Very Low Dropout Voltage 500mA ...
Datasheet PDF File TC1268 PDF File

TC1268
TC1268

Overview
TC1268 500mA Fixed Output, Fast Response CMOS LDO with Shutdown Features • • • • • • • • Very Low Dropout Voltage 500mA Output Current High Output Voltage Accuracy Standard or Custom Output Voltages Over Current and Over Temperature Protection SHDN Input for Active Power Management ERROR Output to Detect Low Battery 5µsec (typical) Wake-up Time from SHDN General Description The TC1268 is a fixed output, fast turn-on, high accuracy (typically ±0.
5%) CMOS low dropout regulator.
Designed specifically for battery-operated systems, the TC1268’s CMOS construction eliminates wasted ground current, significantly extending battery life.
Total supply current is typically 80µA at full load (20 to 60 times lower than in bipolar regulators).
TC1268’s key features include ultra low noise, very low dropout voltage (typically 350mV at full load), and fast response to step changes in load.
The TC1268 also has a fast wake-up response time (5µsec typically) when released from shutdown.
The TC1268 incorporates both over temperature and over current protection.
The TC1268 is stable with an output capacitor of only 1µF and has a maximum output current of 500mA.
Applications • • • • • • • • • RAMBUS Memory Module Battery-Operated Systems Portable Computers Medical Instruments Instrumentation Cellular/GSM/PHS Phones Linear Post-Regulator for SMPS Pagers Digital Cameras Typical Application VIN VIN VOUT + VOUT COUT 1µF SHDN TC1268 GND SHDN Device Selection Table Part Number TC1268-2.
5VOA Output* Voltage Package (V) 2.
5 Junction Temp.
Range 8-Pin SOIC -40°C to +125°C *Other output voltages and package options are available.
Please contact Microchip Technology Inc.
for details.
Package Type 8-Pin SOIC VOUT GND NC BYPASS 1 2 3 4 8 7 VIN NC SHDN ERROR TC1268 6 5 © 2002 Microchip Technology Inc.
DS21379B-page 1 TC1268 1.
0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings* Input Voltage .
.
6.
5V Power Dissipation.
I...


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