MPF42791 datasheet(65/75 Pages) MPS

65 / 75 page

MPF42791 – 2 TO 16 BATTERY PACK FG W/ R DETECTION AND THERMAL MODEL

MPF42791 Rev. 1.0

MonolithicPower.com

9/19/2022

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

LED2_ON,

0x4000

1: If manual LED control is set to 1 the LED turns on

0: If manual LED control is set to 1 the LED turns off

1, [4]

R/W

Control

On = 1

Off = 0

0 to 1

LED3_ON,

0x4000

1: If manual LED control is set to 1 the LED turns on

0: If manual LED control is set to 1 the LED turns off

1, [5]

R/W

Control

On = 1

Off = 0

0 to 1

LED4_ON,

0x4000

1: If manual LED control is set to 1 the LED turns on

0: If manual LED control is set to 1 the LED turns off

1, [6]

R/W

Control

On = 1

Off = 0

0 to 1

LED5_ON,

0x4000

1: If manual LED control is set to 1 the LED turns on

0: If manual LED control is set to 1 the LED turns off

1, [7]

R/W

Control

On = 1

Off = 0

0 to 1

LED_TRANS,

0x4001

Sets the deglitch time to control when the LED turns

on/off upon transitioning between charge and

discharge mode.

7, [6:0]

R/W

8-bit unsigned integer

LSB = 0.1s

0s to

12.7s

LEDS_ON_

TIME,

0x4002

Sets the time during which the LEDs are on after

pressing the LED push-button.

4, [3:0]

R/W

8-bit unsigned integer

LSB = 1s

Offset = 1s

1s to 16s

I2C Settings and Info

Name, Address

Description

Bit Length,

Position

Type

Encoding

Decoded

Default Value

Range

I2C_ADDRESS,

0x4100

Selects the slave I2C address of the

device.

7, [6:0]

R/W

8-bit unsigned

integer

LSB = 1

0 to 127

I2C_CRC_EN,

0x4100

1: Enable CRC for I2C communication.

Only write commands with the correct

CRC are accepted. The response after a

read command includes the 4 CRC

bytes at the end

0: Disable CRC for I2C communication.

Write commands with no CRC bytes (or

with the correct CRC) are accepted. The

response after a read command does

not include the 4 CRC bytes

1, [7]

R/W

Control

Enable = 1

Disable = 0

0 to 1

I2C_CHANNEL,

0x4200

This RO register returns to the master,

and the I2C channel is used for the

current transaction.

1: The master is connected to the

secondary I2C channel

0: The master is connected to the

primary I2C channel

1, [0]

Read-only

Boolean

true/false

0 to 1

I2C_CHAN_

SEL,

0x4200

Returns the state of the I2C_SEL pin,

which

determines

the

selected

I2C

channel to accept write operations.

1: The secondary I2C channel is selected

for write operations

0: The primary I2C channel is selected

for write operations

1, [1]

Read-only

Boolean

true/false

0 to 1

MPF42791 Datasheet(PDF) 65 Page - Monolithic Power Systems

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