M62253AGP Datasheet, PDF (1/10 Pages) Mitsubishi Electric Semiconductor – Charge Control IC for Li-Ion Batteries

General Description
The M62253AGP is a charge control IC dedicated to Lithium-Ion
batteries.
The constant current/voltage charging suitable for Li-Ion batteries
are available by utilizing on-chip current/voltage control circuits.
It also includes the charge inhibit function for an over discharged
battery and the charge control function detecting battery
temperature, enabling easy configuration of a Li-Ion battery charging
circuit.
Features
*Available for 4.1V and 4.2V battery
*Accurate reference voltage 4.2V 30mV
*Constant current and voltage charging
*Charging inhibit and protection function for a over discharged battery
*Charging inhibit and protection function for both a high and low
temperature battery
*Recharging function
*Dual LED indications monitoring charging states
*Delay circuit to prevent the erroneous detection
MITSUBISHI <STD-Linear ICs>
M62253AGP
Charge Control IC for Li-Ion Batteries
Pin Configuration (Top view)
T IN 1
C3 2
VrefSW 3
V DD 4
Vcc 5
NC 6
LED1 7
LED2 8
16 OUT
15 SENSE +
14 SENSE -
13 V SENSE
12 GND
11 NC
10 C2
9 C1
Package Outline : 16P2E
Applications
Li-Ion Battery Charger for hand-held instruments such as cellular phones and notebook computers
Block Diagram
The voltage value within [ ] is for 4.2V type battery. And the voltage value without
[ ] is for 4.1V type battery or common value for both (4.1V and 4.2V) battery.
VDD VrefSW C1
Vcc
LED2
LED1
4.1V [4.2V]
Regulated Supply
4.42V[4.53V]
4.0V<->3.9V [4.1V<->3.99V]
Erroneous
Detection
Preventing
OE
OUT
Constant Current
Control
ISET
ISENSE+
ISENSE-
OUT
SENSE+
3.0V
[3.07V]
2.6V
[2.66V]
GND
OUT
OE
Constant Voltage
Control
VSET
VSENSE
Erroneous
Detection
Preventing
Erroneous
Detection
Preventing
Current
Detection
1.45V
[1.49V]
3.13V
[3.21V]
SENSE-
VSENSE
TIN
C3 C2
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