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M61041FP Datasheet

4-Battery Version

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M61041FP
4-Battery Version, No Reset Pin
REJ03F0063-0100Z
Rev.1.0
Sep.19.2003
This product is currently under development, and its specifications, pin assignments, etc., are subject to change.
Description
The M61041FP is an semiconductor IC device developed for smart battery packs. It incorporates all the analog
circuitry required by smart batteries in a single chip. When used in conjunction with a microprocessor, it allows the
implementation of a variety of functions, such as battery capacity detection, through the addition of minimal
peripheral devices and is ideal for smart battery system (SBS) battery packs.
The M61041FP also has an on-chip overcurrent detect circuit so that the FET for controlling battery charging and
discharging is protected regardless of the processing speed of the microprocessor.
The microprocessor can change the amplifier gain of the charge/discharge current detect circuit, so battery capacity
detection accuracy is increased. In addition, the M61041FP incorporates a linear regulator that allows it to function
as the power supply for the microprocessor, thereby simplifying power supply block design.
Features
On-chip high-gain op-amp for monitoring charge and discharge current.
On-chip overcurrent detect circuit to protect FET.
Charge/discharge FET can be controlled from microprocessor.
Power-save function for reducing current consumption.
5.2 V operation to reduce microprocessor current consumption.
High-voltage device (absolute maximum rating: 33 V).
Application
Smart battery system (SBS) battery packs
This product is currently under development, and its specifications, pin assignments, etc., are subject to change.
VCC 1
VIN_1 2
VIN_2 3
VIN_3 4
VIN_4 5
VIN_12 6
DFOUT 7
CFOUT 8
16 VREG
15 DI
14 CK
13 CS
12 CIN
11 Analog_out
10 VIN_11
9 GND
16P-TSSOP
Figure 1 Pin Connection Diagram (Top View)
Rev.1.0, Sep.19.2003, page 1 of 28


Renesas Electronics Components Datasheet

M61041FP Datasheet

4-Battery Version

No Preview Available !

M61041FP
VCC
VREG
CK
DI
CS
CFOUT DFOUT
CIN
VIN_12
Series
regulator
FET
control circuit
Regulator
On/off control
Power-down
circuit
Serial/parallel
converter
circuit
Charge/discharge
current detect circuit
Overcurrent Delay circuit
detect circuit
Battery
voltage
detect
circuit
VIN_1
VIN_2
VIN_3
Analog
_OUT
Output
selector
Gain switcher circuit
Shift
voltage
adjustor
Battery 1-4
analog
output
VIN_4
VIN_11 GND
Figure 2 Block Diagram
Pin Function Description
Table 1
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Symbol
Vcc
VIN_1
VIN_2
VIN_3
VIN_4
VIN_12
DFOUT
CFOUT
GND
VIN_11
Analog_OUT
CIN
CS
14 CK
15 DI
16 Vreg
Function
The chips power supply pin. Power is supplied by the charger or the battery.
Positive input pin for lithium ion battery 1.
Negative input pin for lithium ion battery 1. Positive input pin for lithium ion battery 2.
Negative input pin for lithium ion battery 2. Positive input pin for lithium ion battery 3.
Negative input pin for lithium ion battery 3. Positive input pin for lithium ion battery 4.
Charger connect monitor pin. Detects changes from power-down status.
Output pin for discharge FET on/off signals. Also turns off when overcurrent detected.
Output pin for charge FET on/off signals.
Ground pin. Negative input pin for lithium ion battery 4. Connected to charge/discharge
current sensor resistor.
Charge/discharge current monitor pin. Connected to charge/discharge current sensor
resistor.
Output pin for analog signals.
Capacity connection pin for setting overcurrent prevention delay time.
When this pin is low level, data input is accepted and data can be stored in a 6-bit shift
register. At the rising edge from low to high the value in the 6-bit shift register is
latched.
Shift clock input pin. At the rising edge to high the input signal from the DI pin is input to
the 6-bit shift register.
Shift data input pin. Serial data with a data length of 6 bits may be input via this pin.
Power supply pin for microprocessor. Power can be shut off using a signal from the
microprocessor.
Rev.1.0, Sep.19.2003, page 2 of 28


Part Number M61041FP
Description 4-Battery Version
Maker Renesas Technology
Total Page 29 Pages
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