MPF42791 datasheet(64/75 Pages) MPS

64 / 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.

HCONV_LRN_

DTEMPTH,

0x15C3

Sets the heat transfer coefficient learning

temperature derivative threshold.

8, [7:0]

R/W

8-bit unsigned integer

LSB = 0.01°C

0.2°C

0°C to

2.55°C

Fuel Gauge Model

Name, Address

Description

Bit Length,

Position

Type

Encoding

Decoded

Default Value

Range

MDLCELL_MFR,

0x2000

Sets the cell manufacturer.

128, [127:0]

R/W

ASCII character(s)

Default

MDLCELL_

TYPE,

0x2010

Sets the cell type model.

128, [127:0]

R/W

ASCII character(s)

Default

MDLCELL_

QNOM,

0x2020

Sets the nominal capacity of the

cell, which is reported by the

manufacturer.

16, [15:0]

R/W

16-bit unsigned integer

LSB = 5mAh

2500mAh

5mAh to

327675mAh

MDLCELL_CP,

0x2028

Sets the cell’s specific heat.

16, [15:0]

R/W

16-bit unsigned integer

LSB = 0.001J/(g x K)

0.85J/(g x K)

0.001J/(g x K)

to 65.535J/

(g x K)

MDLCELL_

MASS,

0x202A

Sets the cell mass.

16, [15:0]

R/W

16-bit unsigned integer

LSB = 0.5g

45g

0.5g to

32767.5g

MDLCELL_

AREA,

0x202C

Sets the cell surface area.

16, [15:0]

R/W

16-bit unsigned integer

LSB = 5mm2

4262mm2

1mm2 to

327675mm2

MDLINFO_

ICHG_MAX,

0x2098

Sets

the

maximum

charge

current that the cell can handle,

according to the manufacturer.

16, [15:0]

R/W

16-bit unsigned integer

LSB = 0.001 C-rate

1 C-rate

0 C-rate to

65.535 C-rate

MDLINFO_

IDIS_MAX,

0x209A

Sets the maximum discharge

current that the cell can handle,

according to the manufacturer.

16, [15:0]

R/W

16-bit unsigned integer

LSB = 0.001 C-rate

2 C-rate

0 C-rate to

65.535 C-rate

MDLINFO_

TCHG_MIN,

0x209C

Sets the minimum temperature

that

the

cell

can

handle,

according to the manufacturer.

8, [7:0]

R/W

8-bit unsigned integer

LSB = 0.5°C

0°C

-30°C to

+97.5°C

MDLINFO_

TCHG_MAX,

0x209D

Sets the maximum temperature

that

the

cell

can

handle,

according to the manufacturer.

8, [7:0]

R/W

8-bit unsigned integer

LSB = 0.5°C

50°C

-30°C to

+97.5°C

MDLINFO_

QMEAS,

0x20A0

Sets the capacity measured in

the cell characterization test.

16, [15:0]

R/W

16-bit unsigned integer

LSB = 5mAh

2437mAh

5mAh to

327675mAh

LED Settings

Name, Address

Description

Bit Length,

Position

Type

Encoding

Decoded

Default Value

Range

LEDS_ON_

MAN,

0x4000

1: The LEDs are controlled manually using the

dedicated register bits

0: The LEDs are directly controlled to report the

SOC

1, [0]

R/W

Control

Enable = 1

Disable = 0

0 to 1

LEDS_ON_

CHG,

0x4000

1: The LEDs display the pack SOC while charging,

if the manual LED controls are set to 0

0: The LEDs do not display the pack SOC while the

charging and manual LED controls are set to 0

1, [1]

R/W

Control

Enable = 1

Disable = 0

0 to 1

LEDS_ON_BTN,

0x4000

1: The LEDs display the pack SOC after the LED

push-button is pressed if the manual LED controls

are set to 0

0: The LEDs do not display the pack SOC after the

LEDs push-button is pressed and the manual LED

controls are set to 0

1, [2]

R/W

Control

Enable = 1

Disable = 0

0 to 1

LED1_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, [3]

R/W

Control

On = 1

Off = 0

0 to 1

MPF42791 Datasheet(PDF) 64 Page - Monolithic Power Systems

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