M61040FP 데이터 시트보기 (PDF) - Renesas Electronics
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M61040FP Datasheet PDF : 25 Pages
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M61040FP
Enter power down mode
Microcomputer issues shot-down command to M61040 after microcomputer detects that battery voltage is too
low. After this command, the DFOUT pin is set to "high" and the VIN12 pin is pulled down by internal resistor to
be set "low" and series regulator are turned off.
In the power down mode, the M61040 operation is impossible. And CFOUT, DFOUT and PFOUT pins are set
to "high". (In this situation, both charging and discharging are forbidden.)
At this time, supply current becomes Max 1.0 µA, so drops of battery voltage is prevented.
VIN12 9
1 VCC
2 CFOUT
3 PFOUT
4 DFOUT
GND level
in discharging
Vreg 20
Vref 19
RESET 18
CK 16
DI 17
CS 15
Series
Regulator
Regulator
ON/OFF control
reset circuit
Serial to Parallel
conversion
circuit
Control signal
from I/F circuit
VIN1 5
Figure 2 Function after Detecting Over-discharge
Resume from power down mode
After entering power down mode, the series regulator will begin operation when charger is connected (VIN12 pin
is high). The RESET will output low to high signal when Vreg is over reset level voltage. Microcomputer will
begin operation and send command to resume M61040 from power down mode.
7. Conditioning circuit
M61040 have a discharge circuit of each cells. It is available for drop of cell voltage for safety purpose. And to
shorten the difference voltage among the cells. It can extend the battery pack life.
REJ03F0237-0200 Rev.2.00 Mar 18, 2008
Page 6 of 24
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