M62240FP Datasheet, PDF (1/7 Pages) Mitsubishi Electric Semiconductor – SINGLE CHIP BATTERY CHARGER CONTROL IC

M62240FP
Single Chip Battery Charger Control IC
REJ03F0239-0200
Rev.2.00
Sep 14, 2007
Description
The M62240FP is a general purpose battery charger control IC. It can control all of the sequence needed for battery
charging, it also has functions such as detection of battery temperature, a protection against over-current/voltage, a
safety timer and so on. Moreover, it can adapt to charge Ni-Cd, Ni-MH batteries by adding few peripheral components.
The IC has the feedback control of the charge current and output voltage.
Features
• Low voltage (3 V) operation
• Built-in following functions and circuits;
 CR oscillator for internal logic
 Initialization timer and safety timer for ∆V error detection and over-charging
 D/A converter and shift registers to maintain the peak voltage of battery
 Main output SW driving circuits
 LED driving circuit for displaying the status of the charging
 System reset circuit for detecting the power supply voltage
 Temperature detection circuit for the Ni-MH battery
 Voltage and current control circuits for feedback to the primary side of the SMPS.
 Protective functions including detection of over-voltage in charge mode and over-current in adapter mode and so on
Application
Battery charger for video cameras and handheld telephones, etc.
Block Diagram
V_CC Vref1 Vref2
17
2 13
SYSTEM
RESET CHT.
STABLED
PWR. SUP.
V_DET I_DET
16
18
LED
3
LED
DRIVER
Chg SW
6
OUTPUT
SW DRIVER
P.C 15
I_SET1 20
I_SET2 1
7
GND
+
−
VOLTAGE
SET-UP CKT.
+
−
CURRENT
SET-UP CKT.
CONTROL LOGIC
8 Batt SW
9 VTR SW
OVER-CURRENT
DET. CKT.
BATTERY TEMP
DET. CKT.
14 Batt T
CLOCK
OSCILLATOR _{GEN. CKT.}
TEST
CKT.
−∆V ERROR DET.
PREV. LOGIC
BATT. VOLTAGE
DET. CKT.
11 Batt+
12 Batt−
4
5
Rc Cc
10
19
TEST OC SET
REJ03F0239-0200 Rev.2.00 Sep 14, 2007
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