TC1300 datasheet(1/16 Pages) MICROCHIP

Part #	TC1300

Description	300 mA CMOS LDO with Shutdown, Bypass and Independent Delayed Reset Function

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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1 / 16 page

 2002 Microchip Technology Inc.

DS21385C-page 1

M

Features

• LDO with Integrated Microcontroller Reset

Monitor Functionality

• Low Input Supply Current (80 µA, typical)

• Very Low Dropout Voltage

• 10 µsec (typ.) Wake-Up Time from SHDN

• 300 mA Output Current

• Standard or Custom Output and Detected

Voltages

• Power-Saving Shutdown Mode

• Bypass Input for Quiet Operation

• Separate Input for Detected Voltage

• 140 msec Minimum RESET Output Duration

• Space-Saving MSOP Package

• Specified Junction Temperature Range:

-40°C to +125°C

Applications

• Battery-Operated Systems

• Portable Computers

• Medical Instruments

• Pagers

• Cellular / GSM / PHS Phones

Related Literature

• AN765, “Using Microchip’s Micropower LDOs”,

DS00765.

• AN766, “Pin-Compatible CMOS Upgrades to

Bipolar LDOs”, DS00766.

• AN792, “A Method to Determine How Much

Power a SOT23 Can Dissipate in an Application”,

DS00792.

Package Type

General Description

The TC1300 combines a low dropout regulator and a

microcontroller reset monitor in an 8-Pin MSOP pack-

age. Total supply current is 80 µA (typical), 20 to 60

times lower than bipolar regulators.

The TC1300 has a precise output with a typical accu-

racy of ±0.5%. Other key features include low noise

operation, low dropout voltage and internal feed-

forward compensation for fast response to step

changes in load. The TC1300 has both over-tempera-

ture and over-current protection. When the shutdown

control (SHDN) is low, the regulator output voltage falls

to zero, RESET output remains valid and supply cur-

rent is reduced to 30 µA (typical). The TC1300 is rated

for 300 mA of output current and stable with a 1 µF out-

put capacitor.

An active-low RESET is asserted when the detected

voltage (VDET) falls below the reset voltage threshold.

The RESET output remains low for 300 msec (typical)

after VDET rises above reset threshold. The TC1300

also has a fast wake-up response time (10 µsec.,

typical) when released from shutdown.

Typical Application Circuit

1

2

3

4

V

IN

V

DET

5

6

7

8

NC

V

OUT

GND

Bypass

SHDN

RESET

TC1300VUA

MSOP

TC1300

1

2

3

4

5

6

7

8

VOUT

CBYPASS

470 pF

(Optional)

Shutdown Control

(from Power

Control Logic)

GND

Bypass

VIN

SHDN

VOUT

C1

1µF

RESET

VDET

NC

C2

1µF

Battery

VDET

TC1300

300 mA CMOS LDO with Shutdown, Bypass and

Independent Delayed Reset Function

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