MM1433 查看數據表（PDF） - Mitsumi

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MM1433

Lithium-Ion Battery Charge Control (1 to 2 cells)

Mitsumi 

MITSUMI

Lithium-Ion Battery Charge Control (1 to 2 cells) MM1433

Pin No. Pin name I/O

11 ADJ4 Input

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

Full charge current adjustment pin

Pin voltage is set at 0.89mV typ. Full charge current can be changed by adjusting

pin voltage with an external resistor, etc.

Full charge current control is done by comparing ADJ4 pin voltage and 12dB

voltage drop value between CS and BAT.

When full charge current is controlled to rated current by an adapter, short ADJ4

pin and VREF pin so that rated current control does not function in the IC.

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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