TC1174

Features:

• Extremely Low Supply Current (50µA, Typ.)
• Very Low Dropout Voltage
• 300mA Output Current
• Adjustable Output Voltages
• Power Saving Shutdown Mode
• Bypass Input for Ultra Quiet Operation
• Over Current and Over Temperature Protection
• Space-Saving MSOP Package Option




Application

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




Pinout






Specifications

Parameter Name	Value
Max Input Voltage	6
Output Voltage (v)	1.20 --- 5.5
Typical Active Current (A)	50
Typical Dropout Voltage @ Max. lout (mV)	270
Output Capacitor Type	Aluminum/Tantalum

Parameter NameValueMax Input Voltage6Output Voltage (v)1.20 --- 5.5Typical Active Current (A)50Typical Dropout Voltage @ Max. lout (mV)270Output Capacitor TypeAluminum/Tantalum

Input Voltage ....................................................6.5V
Output Voltage............ (V_SS 0.3V) to (V_IN + 0.3V)
Power Dissipation............Internally Limited (Note 5)
Maximum Voltage on Any Pin ......V_IN +0.3V to -0.3V
Operating Temperature Range......-40< T_J < 125
Storage Temperature.......................-65 to +150




Description

The TC1174 is an adjustable output CMOS low dropout regulator. Total supply current is typically 50A at full load (20 to 60 times lower than in bipolar regulators!). TC1174 key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typically 240mV at full load) and internal feed-forward compensation for 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 TC1174 incorporates both over-temperature and over-current protection. The TC1174 is stable with an output capacitor of only 1F and has a maximum output current of 300mA.