1

LTC1326/LTC1326-2.5

132625fc

TYPICAL APPLICATIO

APPLICATIO S

FEATURES

DESCRIPTIO

Micropower Precision

Triple Supply Monitors

RST Output Voltage vs Supply Voltage (LTC1326-2.5)

■

Simultaneously Monitors Three Supplies

LTC1326: 5V, 3.3V and ADJ

LTC1326-2.5: 2.5V, 3.3V and ADJ

■

Guaranteed Threshold Accuracy:

±0.75%

µA

■

Manual Push-Button Reset Input

■

Power Supply Glitch Immunity

■

8-Pin SO and MSOP Packages

The LTC

intended for systems with multiple supply voltages. They

provide micropower operation, small size and high accu-

racy supply monitoring.

Tight 0.75% threshold accuracy and glitch immunity

ensure reliable reset operation without false triggering.

The 20

µA typical supply current makes the LTC1326/

LTC1326-2.5 ideal for power-conscious systems.

The RST output is guaranteed to be in the correct state for

can be configured to monitor one, two or three inputs,

depending on system requirements.

A manual push-button reset input provides the ability to

generate a very narrow “soft” reset pulse (100

µs typ) or a

200ms reset pulse equivalent to a power-on reset. Both

SRST and RST outputs are open-drain and can be OR-tied

with other reset sources.

0

2.0

2.5

3.5

1.5

2.5

1326/2.5 TA02

1.5

1.0

0.5

1.0

2.0

3.0

3.5

0.5

0

3.0

PUSH-BUTTON

RESET

1326/2.5 TA01

0.1

µF

GND

RST

PBR

SRST

LTC1326-2.5

3.3V

2.5V

DC/DC

CONVERTER

SYSTEM

LOGIC

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 4843302.