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TC1187VCT Datasheet(PDF) 1 Page - Microchip Technology |
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TC1187VCT Datasheet(HTML) 1 Page - Microchip Technology |
1 / 16 page © 2002 Microchip Technology Inc. DS21353B-page 1 TC1070/TC1071/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 Applications • Battery Operated Systems • Portable Computers • Medical Instruments • Instrumentation • Cellular/GSM/PHS Phones • Linear Post-Regulators for SMPS • Pagers Device Selection Table Package Type General Description The TC1070, TC1071 and TC1187 are adjustable LDOs designed to supersede a variety of older (bipolar) voltage regulators. Total supply current is typically 50 µA 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 µA (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 1 µF and have a maximum output current of 50mA, 100mA and 150mA, respectively. For higher output versions, please see the TC1174 (IOUT = 300mA) data sheet. Typical Application Part Number Output Voltage (V) Package Junction Temp. Range TC1070VCT Adjustable 5-Pin SOT-23A -40°C to +125°C TC1071VCT Adjustable 5-Pin SOT-23A -40°C to +125°C TC1187VCT Adjustable 5-Pin SOT-23A -40°C to +125°C SHDN 5 5-Pin SOT-23A TC1070 TC1071 TC1187 13 4 2 VIN VOUT GND ADJ NOTE: 5-Pin SOT-23A is equivalent to the EIAJ (SC-74A) TC1070 TC1071 TC1187 VOUT GND C1 1 µF + VIN VIN VOUT 1 5 2 4 3 SHDN Shutdown Control (from Power Control Logic) ADJ R1 R2 [ ] VOUT = VREF x +1 R1 R2 50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown |
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