TC1269

Features:

• Very Low Ground Current for Longer Battery Life
• Very Low Dropout Voltage
• 300mA Output Circuit
• High Output Voltage Accuracy
• Standard or Custom Output Voltages
• Power Saving Shutdown Mode
• Bypass Input for Ultra Quiet Operation
• Over Current and Over Temperature Protection
• Space-Saving MSOP Package




Application

• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHS Phones
• Linear Post-Regulator for SMPS
• Pagers
• Digital Cameras




Pinout






Specifications

Absolute Maximum Ratings*

Input Voltage .....................................................6.5V
Output Voltage................ (V_SS 0.3) to (V_IN + 0.3V)
Maximum Voltage on Any Pin ........V_IN +0.3V to -0.3V
Power Dissipation.............Internally Limited (Note 6)
Operating Temperature ....... -40°C < T_J < +125°C
Storage Temperature...................-65°C to +150°C

*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

Parameter Name	Value
Max Input Voltage	6
Output Voltage (v)	2.5, 2.8, 3.0, 3.3, 5.0
Typical Active Current (A)	50
Typical Dropout Voltage @ Max. lout (mV)	240
Typical Output Voltage Accuracy (%)	0.5
Output Capacitor Type	Aluminum/Tantalum

Description

The TC1269 is a fixed output, high accuracy (typically ±0.5%) CMOS upgrade for older (bipolar) low dropout regulators. Total supply current is typically 50A at full load (20 to 60 times lower than in bipolar regulators!). TC1269 key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typically 240mV at full load), and fast response to step changes in load. Supply current is reduced to 0.05A (typical) and VOUT falls to zero when the shutdown input is low. The TC1269 incorporates both over-temperature and over-current protection. The TC1269 is stable with an output capacitor of only 1F and has a maximum output current of 300mA.