50 mA, 100 mA and 150 mA CMOS LDOs with Shutdown and ERROR Output



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Short Lead Time
Unit Price:$0.45
Minumum Qty: 1

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Product Information

The TC1054, TC1055 and TC1186 are high accuracy (typically ±0.5%) CMOS upgrades for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the devices’ CMOS construction minimizes ground current, extending battery life. Total supply current is typically 50 µA at full load (20 to 60 times lower than in bipolar regulators).

The devices’ key features include low noise operation, low dropout voltage – typically 85 mV (TC1054), 180 mV (TC1055) and 270 mV (TC1186) at full load — and fast response to step changes in load. An error output (ERROR) is asserted when the devices are out-of-regulation (due to a low input voltage or excessive output current). ERROR can be used as a low battery warning or as a processor RESET signal (with the addition of an external RC network). Supply current is reduced to 0.5 µA (maximum), with both VOUT and ERROR disabled when the shutdown input is low. The devices incorporate both over-temperature and over-current protection.

The TC1054, TC1055 and TC1186 are stable with an output capacitor of only 1 µF, and have a maximum output current of 50 mA, 100 mA and 150 mA, respectively. For higher output current regulators, please refer to the TC1173 (IOUT = 300 mA) data sheet (DS21632).

Symmetry Electronics is an authorized MISC. distributor.


Low Ground Current for Longer Battery Life
Low Dropout Voltage
Choice of 50 mA (TC1054), 100 mA (TC1055) and 150 mA (TC1186) Output
High Output Voltage Accuracy
Standard or Custom Output Voltages: - 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, 3.6V, 4.0V, 5.0V
Power-Saving Shutdown Mode
ERROR Output Can Be Used as a Low-Battery Detector or Microcontroller-Reset Generator
Overcurrent and Overtemperature Protection
5-Pin SOT-23 Package
Pin-Compatible Upgrades for Bipolar Regulators


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