LTC1540CS8 datasheet(9/12 Pages) LINER

Part #	LTC1540CS8

Description	Nanopower Comparator with Reference

PDF	12 Pages

Scroll/Zoom	100%

Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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9 / 12 page

LTC1540

sn1540 1540fas

Low-Battery Detect

Figure 9 shows how to use the LTC1540 for a low-battery

detect, drawing only 1.4µA at VBAT = 2V. The circuit is

low as 1.6V when the batteries are completely depleted.

The electrical specifications of the LTC1540 guarantee

operation down to a supply voltage of 2V, but it is still

functional with the supply as low as 1.6V. Some param-

eters, such as VREF and VOS, will be degraded on lower

supply voltages. The input voltage range extends from

0.9V below the positive supply to the negative supply.

TYPICAL APPLICATIONS

Figure 9. Low-Battery Detect Works Down to 1.6V

V +

1.1M

VBAT = ~1.6V TO 2.5V

V –

OUT

GND

LBO

2-CELL

NiCd

LTC1540

1540 F09

IN+

IN–

REF

HYST

–

40k

1.2M

LTC1540CS8 Datasheet(PDF) 9 Page - Linear Technology