MM1248 데이터 시트보기 (PDF) - Mitsumi

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MM1248

Control of Lithium Ion Battery Charging and Discharging

Mitsumi 

MITSUMI

Control of Lithium Ion Battery Charging and Discharging MM1248

Pin no.

8

Pin name

CDC

Equivalent circuit

Function

Pin for connection to a capacitor to set the dead

time for discharge on/off switching

During discharge : approx. 5V; when discharge

stops : GND level

Dead time is set when discharge is turned off and

discharge stopped

Dead time is approx. 1S for an 0.1µF capacitance

9

GND

10

FET (G)

11

BATL

12

OV2

13

BATM

14

FET (D)

15

BATH

16

VCC

GND pin for this IC

Pin for connection to P-ch FET gate for battery

module voltage level input

During discharge "L" is output; when discharge is

stopped switches to "H"

Pin for input of L cell+terminal voltage (in a battery

module with three cells in series, cells are defined,

starting from the high side, as the H cell, M cell

and L cell)

Pin for overvoltage signal output; NPN open

collector output

High-impedance output during normal operation;

switches to "L" on overcharge

The high-potential side of the pull-up resistance

should be 10 V max

Pin for input of M cell+terminal voltage

Pin for connection to drain of P-ch FET for battery

module voltage level input

Pin for input of H cell+terminal voltage

Power supply input pin for overcharge detection,

discharge control, battery module voltage

monitoring units

Voltage at same potential as BATH should be input

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