M61040FP Datasheet, PDF (1/25 Pages) Mitsubishi Electric Semiconductor – Smart battery protection and monitoring IC

M61040FP
Smart Battery Protection and Monitoring IC
REJ03F0237-0200
Rev.2.00
Mar 18, 2008
Description
The M61040FP is intended to be used as SB: Smart Battery.
All functions needed for SB are packed to this M61040FP. The combination use with microcomputer such as M37515
will give various functions such as a detection or calculation of SB remaining capacity. Over current detection circuit
dedicated in M61040FP will give safety FET on/off control independent from microcomputer control.
The amp gain of charge/discharge current detection circuit is controlled by microcomputer, therefore the accuracy of
SB's remaining capacity detection becomes better than before. The reset circuit and the linear regulator for V_CC/Vref of
microcomputer are dedicated in M61040FP. So this will help easy design of power circuit design of SB.
Features
• Built-in high gain op-amps for monitoring charge/discharge current
• Built-in over current detection circuit for FET protection
• All FETs are controlled by microcomputer
• Various powers saving function to reduce total power dissipation
• High input voltage device (absolute maximum rating: 33 V)
Application
Smart battery system
Block Diagram
V_CC
Vreg
Vref
Reset
CK
DI
CS
VIN12
CFOUT PFOUT
DFOUT
CIN
Series
Regulator
Regulator
ON/OFF and
Reset circuit
Over current
detection
circuit
Delay circuit
Serial to
Parallel
conversion
circuit
Battery cell
voltage
detection
circuit
ANALOG OUT
Multi-plexer
circuit
Gain selector
Offset
control
Charge/Discharge current detection circuit
Battery cell 1-4
voltage analog
output
VIN11 VIN10
VIN1
VIN2
VIN3
VIN4
GND
REJ03F0237-0200 Rev.2.00 Mar 18, 2008
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