LTC2935I 데이터 시트보기 (PDF) - Linear Technology

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LTC2935I

Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds

Linear Technology 

TYPICAL APPLICATIONS

Battery Monitor with Interface to Low Voltage Logic

LTC2935

+

Li-Ion

MANUAL

RESET

PB1

PUSHBUTTON

3μA LDO

IN

LT3009 OUT

SHDN GND

ADJ

1.8V

1.18M

590k

1μF

100k 100k

0.1μF

RESD*

10k

VCC

S0

PFO

S1

LTC2935-1

S2

VDD

NMI

μP

MR

RST

RST

GND

POWER FAIL FALLING THRESHOLD = 3.15V

RESET FALLING THRESHOLD = 3.00V

2935 TA02

*OPTIONAL RESISTOR FOR ADDED ESD PROTECTION

Alkaline Cell Stack Voltage Monitor

+

1.5V

+

1.5V

+

1.5V

0.1μF

VCC MR

S0

PFO

S2

LTC2935-2

S1

LOW BATTERY

RST

SYSTEM RESET

GND

2935 TA03

POWER FAIL FAIL THRESHOLD = 2.55V

RESET THRESHOLD = 2.40V

Coin Cell Voltage Monitor

+

CR2032

0.1μF

VCC MR

S2

PFO

LOW BATTERY

S1 LTC2935-2

S0

RST

SYSTEM RESET

GND

2935 TA04

POWER FAIL FAIL THRESHOLD = 2.70V

RESET THRESHOLD = 2.55V

2935fa

9

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