TC2186 datasheet(1/18 Pages) MICROCHIP

Il numero della parte	TC2186

Spiegazioni elettronici	50 mA, 100 mA, and 150 mA CMOS LDOs with Shutdown and Error Output

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Produttore elettronici	MICROCHIP [Microchip Technology]

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DS21663C-page 1

TC2054/2055/2186

Features

• Low Supply Current (55 µA Typ.) for Longer Bat-

tery Life

• Low Dropout Voltage: 140 mV (Typ.) @ 150 mA

• High Output Voltage Accuracy: ±0.4% (Typ)

• Standard or Custom Output Voltages

• Power-Saving Shutdown Mode

• ERROR Output Can Be Used as a Low Battery

Detector or Processor Reset Generator

• Fast Shutdown Reponse Time: 60

μsec (Typ)

• Overcurrent and Overtemperature Protection

• Space-Saving 5-Pin SOT-23A Package

• Pin Compatible Upgrades for Bipolar Regulators

• Standard Output Voltage Options:

-

1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V,

3.3V, 5.0V

Applications

• Battery Operated Systems

• Portable Computers

• Medical Instruments

• Instrumentation

• Cellular / GSMS / PHS Phones

• Pagers

Typical Application

General Description

The TC2054, TC2055 and TC2186 are high accuracy

(typically ±0.4%) CMOS upgrades for older (bipolar)

low dropout regulators. Designed specifically for bat-

tery-operated systems, the devices’ total supply current

is typically 55 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 45 mV (TC2054); 90 mV

(TC2055); and 140 mV (TC2186) at full load - and fast

response to step changes in load. An error output

(ERROR) is asserted when the devices are out-of-reg-

ulation (due to a low input voltage or excessive output

current). Supply current is reduced to 0.5 µA (max) and

both VOUT and ERROR are disabled when the shut-

down input is low. The devices also incorporate over-

current and overtemperature protection.

The TC2054, TC2055 and TC2186 are stable with a

low esr ceramic output capacitor of 1 µF and have a

maximum output current of 50 mA, 100 mA and

150 mA, respectively. This LDO Family also features a

fast response time (60 µs typically) when released from

shutdown.

Package Type

1µF

Shutdown Control

(from Power Control Logic)

TC2054

TC2055

TC2186

VIN

1

2

34

5

VIN

VOUT

ERROR

SHDN

GND

1M

VOUT

ERROR

1µF

TC2054

TC2055

TC2186

1

3

4

5

2

ERROR

GND

VOUT

VIN

SHDN

5-Pin SOT-23A

Top View

50 mA, 100 mA, and 150 mA CMOS LDOs

with Shutdown and Error Output

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