LTC2960

1

2960f

TYPICAL APPLICATION

FEATURES

DESCRIPTION

36V Nano-Current

Two Input Voltage Monitor

voltage monitor, ideally suited for multicell battery ap-

plications. External resistive dividers configure custom

comparator thresholds. The supervisory circuit monitors

the ADJ input and pulls the RST output low when the input

drops below threshold. A reset timeout period delays the

return of the RST output to a high state when the input

rises above the threshold. The spare comparator allows

voltage conditions to be detected with either a non-inverting

is provided for external activation of the reset output.

Other options provided on the LTC2960-1/LTC2960-2 in-

clude a reset timeout period select pin, RT, to select between

15ms or 200ms reset timeout periods. The LTC2960-3/

LTC2960-4 have a fixed 200ms reset timeout period. The

RST and OUT outputs are available with active pull-up cir-

cuits to an output logic supply pin (LTC2960-3/LTC2960-4)

or 36V open-drain outputs (LTC2960-1/LTC2960-2).

Battery and Regulator Monitor

Supply Current vs Supply Voltage

APPLICATIONS

TSOT-23 (ThinSOT™) Packages

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners.

LTC2960 Option Table

Option

Inputs

Reset Timeout Period

Output Type

LTC2960-1

15ms/200ms

36V Open-Drain

LTC2960-2

15ms/200ms

36V Open-Drain

LTC2960-3

200ms

Active Pull-up

LTC2960-4

200ms

Active Pull-up

+

GND

RST

OUT

ADJ

MR

LTC2960-3

LTC3632

DC/DC

GND

Li-Ion

4.2V

+

Li-Ion

4.2V

C1

0.1μF

50V

C2

1μF

R2

6.04M

R1

402k

R4

1.3M

R3

402k

1.8V

RESET

LOW BATTERY

POWER-FAIL FALLING THRESHOLD = 6.410V

RESET FALLING THRESHOLD = 1.693V

2960 TA01

0

0

900

600

300

1200

40

32

816

2960 TA01a

24

MR=5V, 27C