TC1187

Features:

· Zero Ground Current for Longer Battery Life
· Adjustable Output Voltage
· Very Low Dropout Voltage
· Choice of 50mA (TC1070), 100mA (TC1071) and 150mA (TC1187) Output
· Power-Saving Shutdown Mode
· Over Current and Over Temperature Protection
· Space-Saving 5-Pin SOT-23A Package
· Pin Compatible with Bipolar Regulators

Application

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

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............................(-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

*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.

Description

The TC1070, TC1071, and TC1187 are adjustable LDOs designed to supersede a variety of older (bipolar) voltage regulators. Total supply current is typically 50uA at full load, 20 to 60 times lower than in bipolar regulators! The devices' key features include ultra low noise operation, very low dropout voltage - typically 85mV (TC1070); 180mV (TC1071); and 270mV (TC1187) at full load, and fast response to step changes in load. Supply current is reduced to 0.5 A (max) when the shutdown input is low. The devices incorporate both over-temperature and over-current protection. Output voltage is programmed with a simple resistor divider from VOUT to ADJ to GND. The TC1070, TC1071, and TC1187 are stable with an output capacitor of only 1F and have a maximum output current of 50mA, 100mA, and 150mA, respectively. For higher output versions, please see the TC1174 (IOUT = 300mA) data sheet.

The TC1070, TC1071 and TC1187 are adjustable LDOsdesignedtosupersedeavarietyofolder(bipolar) voltage regulators. Total supply current is typically 50A at full load (20 to 60 times lower than in bipolar regulators).

The devices' key features include ultra low noise operation, very low dropout voltage typically 85mV (TC1070); 180mV (TC1071); and 270mV (TC1187) at full load, and fast response to step changes in load.Supply current is reduced to 0.5A (max) when the shutdown input is low. The devices incorporate both over-temperature and over-current protection. Output voltage is programmed with a simple resistor divider from V_OUT to ADJ to GND.

The TC1070, TC1071 and TC1187 are stable with an output capacitor of only 1F and have a maximum output current of 50mA, 100mA and 150mA, respectively.Forhigheroutputversions,pleaseseethe TC1174 (I_OUT = 300mA) data sheet.