TC1307 datasheet(1/28 Pages) MICROCHIP

Il numero della parte	TC1307

Spiegazioni elettronici	Four-Channel CMOS LDO with Select Mode, Shutdown and Independent Reset

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Produttore elettronici	MICROCHIP [Microchip Technology]

Homepage	http://www.microchip.com

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 2002 Microchip Technology Inc.

DS21702A-page 1

M

TC1307

Features

• Four Independent 150 mA LDOs

• Low Supply Current (220 µA typical)

• High Output Voltage Accuracy (0.5% typical)

• Low Dropout Voltage (100 mV typical with

150 mA load)

• Four Independent Shutdown Inputs

• Select Mode™: Selectable Output Voltages for

High Design Flexibility

• Integrated Independent Microprocessor Reset

• Low Noise Outputs

• Fast Response from Shutdown (10 µs typical)

• RESET Output for Low Battery Detection or Reset

Generator

• Over Current and Over-Temperature Protection

• Small 16-Pin QSOP Package

• Specified Junction Temperature Range:

- -40°C to +125°C

Applications

• Battery Operated Systems

• Potable Computers

• Set Top Boxes

• Load Partitioning

• Medical Instruments

• Cellular / GSM / PHS Phones

• Instrumentation

• Linear Post Regulator for SMPS

• Pagers

Description

The TC1307 combines four CMOS Low Dropout Linear

Regulators with a Microcontroller Monitor in a space-

saving 16-Pin QSOP package. Developed specifically

for battery powered portable applications, all four out-

puts of the TC1307 typically consume a total of 220 µA

supply current, hold the output voltage to a tolerance of

0.5% and require 100 mV of headroom for regulation at

the maximum output current of 150 mA. In addition to

the four high performance LDOs, the TC1307 also

includes a voltage detector with a delayed RESET out-

put that can be configured for low battery detection or

Microcontroller Reset Generator.

All four LDOs have independent shutdown inputs and

can be programmed using two select inputs making the

TC1307 adaptable for a wide range of multiple output

applications. The tri-state SELECT12 input pin allows

the designer to select the output voltages on VOUT1,

and VOUT2 from three different values (2.5V, 2.8V or

3.0V). The tri-state SELECT34 input pin allows the

designer to select the output voltages on VOUT3, and

VOUT4 from three different values (1.8V, 2.5V or 2.8V).

All four LDO’s require only a 1 µF output capacitor for

stability that can be ceramic, tantalum or aluminum

over the entire input voltage operating range and 0 mA

to 150 mA rated load range. All four LDOs have low

output noise and excellent dynamic response when

faced with sudden line and load changes.

The voltage detect pin is set for a threshold of 2.63V

(typical) and operates down to a minimum input voltage

of 1.0V. When the voltage on the detect pin rises above

the 2.63V threshold, the RESET output is held low for

300 ms (typical).

Additional integrated features include over-current pro-

tection and over-temperature protection providing full

protection from external load faults.

Package Types

TC1307

1

2

3

4

5

6

7

89

10

11

12

13

14

15

16

V

DET

SHDN1

SHDN3

SHDN4

SHDN2

SELECT12

SELECT34

V

IN

V

IN

V

IN

RESET

V

OUT

1

V

OUT

2

V

OUT

3

V

OUT

4

GND

QSOP

Four-Channel CMOS LDO with Select Mode, Shutdown and

Independent Reset

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