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Mitsubishi Semiconductor < DIGI•ANA Interface >
M62254FP
Standard Battery Charger Controller
DESCRIPTION
The M62254FP is designed as standard battery charger controller. The M62254FP has functions which require for the battery charge control on single chip. Not only the combination of M62254 and MCU capable of handling battery charge control, but also it is capable of monitoring battery temperature, prevent from over current or voltage, using minimal peripherals. It also has feedback function to the primary source of SW power supply, which can used to control feedback of charge current and output voltage.
Pin layout(Top view)
1 OP IN1+ OPIN1- 2 LED1 3 LED2 4 LED3 5 P.GND 6 MSW1 7 MSW2 8 SSW 9 CD 10 REF 11 IN1 12 IN2 13 IN3 14 IN4 15 ISENSE 16 DOUT 17 RESET 18 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
FEATURE
Built-in Reset circuit and WDT function Built-in Multiplexer and Level magnification circuit with 4 input ports Built-in two standard stand alone OPAmp Built-in Sub-switch circuit with feedback function Built-in 3 line serial data interface function Built-in Low inputÅEoutput operation 5V voltage regulator function Built-in Charge current/output voltage control circuit
OP OUT1 OP OUT2 OP IN2+ OP IN2P.C GND Iadj IDET V DET TC WD Ctd CS CK DI VB Vcc V DD
36P2R
M62254FP
APPLICATIONS
Video camera, Hand carry telephone and general battery charger for other digital equipments
Block diagram
V DET Iadj IDET 28 30 29
Vcc VB V DD 20 21 19
Voltage regulator Voltage control circuit
LED1 LED2 LED3 MSW1 MSW2 3 4 5 7 8
LED driver circuit Main SW driver
SSW 9
Sub SW driver
P.C 32
Voltage control OP
+
+
OPOUT1 36
Current control OP
/
/
/
Driver detection circuit
10 CD
/
Current control circuit
+
Serial Parallel conversion circuit
/ /
Amp1 9 1
/
CS IN CLOCK
+
Amp2
16 ISENSE 12 IN1 13 IN2 14 IN3 15 IN4
1
OPOUT2 35
Reset circuit WDT
+
3
+
33 2 25 6 34 1 18 27 26 24 22 23 17 OPIN2- OP IN2+ OP IN1- OP IN1+ Ctd P.GND RESET TC WD CS DI CK DOUT
-
11 REF
31 GND
Mitsubishi Semiconductor < DIGI•ANA Interface >
M62254FP
Standard Battery Charger Controller «Digital Data Format» MSB
DI CK D7 D6 D5
LSB 8 bit Shift register
D4 D3 D2 D1 D0
CS
Address decoder
8
Latch MPX Current control SW Latch MPX Voltage control SW Latch MPX LED drive SW Latch MPX Main SW Latch MPX Sub SW Latch MPX Input Amp SW Latch MPX A-D input SW
4
Latch MPX Reference voltage SW
«Data Setting»
Address D7 0 D6 0 D5 0 D4 0 D3 Data D2 D1 D0
Control Function RESET
Description
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All SW is OFF A-D reference voltage=0.4V Voltage setting reference voltage = 4.0V See Table 1 See Table 2 See Table 3 See Table 4 See Table 5 See Table 6 See Table 7 See Table 8
Current control Voltage control LED driver select Main SW Sub SW Amp.select A-D input select A-D Reference select
0 0 0 0 0 0 0 1
0 0 0 1 1 1 1 0
0 1 1 0 0 1 1 0
1 0 1 0 1 0 1 0
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Mitsubishi Semiconductor < DIGI•ANA Interface >
M62254FP
Standard Battery Charger Controller
T.