MM1433_ Просмотр технического описания (PDF) - Mitsumi
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MM1433_ Datasheet PDF : 14 Pages
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MITSUMI
IC for Control of Lithium-ion Batteries Charging MM1433
Pin No. Pin name I/O
12 TDET Input
13 BAT1 Input
14 BAT2 Input
15
CS Input
16 CFB Input
17 CNT Output
18
VCC Input
19 ADJ5 Input
20
VOUT Output
21 LED G Output
22 LED R Output
23 OSC OUT Output
24 OSC FB- Input
Functions
Temperature detection input pin
Apply potential resistance divided by external resistor and thermistor from
reference voltage when using. Reset state will exist if TDET pin does not reach
the specified potential.
Battery voltage input pins
Detect battery voltage and control charging.
Current detection pin
Detects current by external resistor (between CS and BAT) voltage drop and
controls charging current.
Rated current control phase compensation pin
Oscillation is improved by connecting an external capacitor (around 100pf)
between CFB and CNT for phase compensation.
Charging control output pin
Controls external PNP-Tr base for rated current rated voltage charging.
Power supply input pin
Rated voltage control adjustment pin
Allows fine adjustment of rated voltage value. For example, rated voltage value
rises by around 15mV (at 4.1V typ.) when ADJ5-GND is shorted.
Overvoltage detection output pin
For VCC overvoltage input: L
For VCC recommended operating voltage: H
LED C control output pin
NPN-Tr open collector output. Refer to the flow chart for ON/OFF.
LED R control output pin
NPN-Tr open collector output. Refer to the flow chart for ON/OFF.
Oscillator output pin
Timer setting time changes according to oscillation frequency.
Oscillation frequency is determined by an external resistor (connected between
OSC OUT and OSC FB) and capacitor (connected between OSC FB and GND).
For example, the full charge timer setting is 4H for external resistor of 130kΩ and
capacitor of 0.01µF.
Oscillator inverted input pin
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