M62241FP Datasheet, PDF (1/22 Pages) Mitsubishi Electric Semiconductor – SINGLE CHIP BATTERY CHARGER CONTROL IC

M62241FP
Single Chip Battery Charger Control IC
REJ03F0240-0200
Rev.2.00
Jun 16, 2008
Description
The M62241FP is designed as 1 chip Integrated Circuit for controlling battery charger. This IC contains analog circuits
needed for controlling charge, and time-sequential-control logic circuits. This IC has various functions such as not only
charge-controlling but also battery temperature detection, protection against over-current/over-voltage, and safety timer.
The combination with some parts gives a charge circuit for Lithium-ion battery easily.
Features
• Designed to operate at as low as 4 V
• CR oscillation circuit for internal logic
• Terminating timer for preventing overcharge 30 m indicating timer
• Main output switch drive circuit
• LED drive circuit (1 system) to indicate charging status
• System reset circuit for detecting the lowering of supply voltage
• Temperature detection for Lithium-ion battery
• Voltage/current control for feedback to the primary side of switching regulator
• Various protections such as over-voltage detection at charging, over-current detection at adapter connection
Application
VCR with camera, cellular phone, battery charger for general electronic equipments.
Block Diagram
VCC
1
RC CC LED SW
15 14
21
9
CHG
20
VBIN 24
Power supply voltage
detection circuit
Oscillator
LED Output Output
driver SW driver SW driver
VDET 2
PC 4
Adapter
control
circuit
Voltage
control
circuit
Logic circuit
Adapter
connection
detection
circuit
19 DCJK
Battery
temperature
10 THS
detection
circuit
8 TH
ADJ1 16
ADJ2 17
Reference voltage
regulator
Current
control
circuit
Voltage
amplifier
circuit
Charge
completion
detection
circuit
Over-current
detection
circuit
Over
voltage
detection
circuit
Low
voltage
detection
circuit
Battery
voltage
detection
circuit
7 VBOUT
6 B−
5 B+
23
22
REFOUT REFIN
11
IDET
18
12
ADJ3 ADJ0
3
13
GND PGND
REJ03F0240-0200 Rev.2.00 Jun 16, 2008
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