MAX6427__UR-T View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX6427__UR-T

Low-Power, Single/Dual-Level Battery Monitors with Hysteresis

Maxim Integrated 

Low-Power, Single/Dual-Level Battery Monitors

with Hysteresis

Microprocessor power will not return until the battery has

recharged to a voltage greater than HTH+ (Figure 6).

Li+ Battery Charger Application

The MAX6430/MAX6431/MAX6432 and MAX6436/

MAX6437/MAX6438 dual-output battery monitors can

be used in conjunction with a battery charger to pro-

vide a system with additional information about the bat-

tery charge state (Figure 10). Many battery chargers,

such as the MAX1879, provide the user with a CHG

output, which tells the system that the battery is

charged. The MAX6430/MAX6431/MAX6432 and

MAX6436/MAX6437/MAX6438 dual-output battery mon-

itors provide two outputs, which can be used to relay

the battery condition to the system. This information is

useful in determining which system resources can be

powered by the battery at the current charge state.

CURRENT-

LIMITED

AC WALL

ADAPTER

LED

IN

CHG

GATE

BATT

PULSE-WIDTH

SELECT INPUT

MAX1879

TSEL

GND

THERM ADJ

THERMISTOR

1-CELL

Li+

BATTERY

VBATT

LBOL

MAX6430

LBOH

GND

Figure 10. Lithium-Ion Cell Charger Application (using MAX1879)

Typical Operating Circuit

VBATT

VCC

BATT

MAX6427

µP

LBO

NMI

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