MAX17040(2010) Просмотр технического описания (PDF) - Maxim Integrated

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Компоненты Описание

производитель

MAX17040
(Rev.:2010)

Compact, Low-Cost 1S/2S Fuel Gauges

Maxim Integrated 

Compact, Low-Cost 1S/2S Fuel Gauges

BATTERY

PROTECTION IC

(Li+/POLYMER)

PACK+

150Ω

1µF

PACK-

SYSTEM

SEO

MAX17040 VDD

CELL

EO

CTG

SDA

GND

SCL

EP

150Ω

SYSTEM

µP

32kHz

OSCILLATOR

OUTPUT

I2C BUS

MASTER

10nF

SYSTEM VDD

SYSTEM VSS

Figure 5. MAX17040 Application Example with External Clock

BATTERY

PROTECTION IC

(Li+/POLYMER)

PACK+

150Ω

1µF

PACK-

SYSTEM

MAX17041

CELL

VDD

SEO

EO

CTG

SDA

GND

SCL

EP

SYSTEM

PMIC

3.3V OUTPUT

WATCHDOG

I2C BUS

MASTER

SYSTEM

µP

SYSTEM VDD

SYSTEM VSS

Figure 6. MAX17041 Application Example with Hardware Reset

2-Wire Bus System

The 2-wire bus system supports operation as a slave-

only device in a single or multislave, and single or multi-

master system. Slave devices can share the bus by

uniquely setting the 7-bit slave address. The 2-wire

interface consists of a serial data line (SDA) and serial

clock line (SCL). SDA and SCL provide bidirectional

communication between the MAX17040/MAX17041

slave device and a master device at speeds up to

400kHz. The MAX17040/MAX17041s’ SDA pin operates

bidirectionally; that is, when the MAX17040/MAX17041

receive data, SDA operates as an input, and when the

MAX17040/MAX17041 return data, SDA operates as an

open-drain output, with the host system providing a

resistive pullup. The MAX17040/MAX17041 always

operate as a slave device, receiving and transmitting

data under the control of a master device. The master

initiates all transactions on the bus and generates the

SCL signal, as well as the START and STOP bits, which

begin and end each transaction.

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