TC1014 datasheet(2/20 Pages) MICROCHIP

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TC1014/TC1015/TC1185

DS21335B-page 2

General Description

The

TC1014/TC1015/TC1185

are

high

accuracy

(typically ±0.5%) CMOS upgrades for older (bipolar)

low dropout regulators such as the LP2980. Designed

specifically for battery-operated systems, the devices’

CMOS construction eliminates wasted ground current,

significantly 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 ultra low noise oper-

ation (plus optional Bypass input), fast response to step

changes in load, and very low dropout voltage –

typically 85mV (TC1014); 180mV (TC1015); and

270mV (TC1185) at full load. Supply current is reduced

to 0.5

µA (max) and VOUT falls to zero when the

shutdown input is low. The devices incorporate both

over-temperature and over-current protection.

The TC1014/TC1015/TC1185 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 current regulators, please see the

TC1107/TC1108/TC1173 (IOUT = 300mA) data sheets.

Typical Application

TC1014

TC1015

TC1185

VOUT

SHDN

GND

Bypass

470pF

Reference

Bypass Cap

(Optional)

µF

VIN

VOUT

Shutdown Control

(from Power Control Logic)

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