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MM1433 Datasheet(PDF) 4 Page - Mitsumi Electronics, Corp. |
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MM1433 Datasheet(HTML) 4 Page - Mitsumi Electronics, Corp. |
4 / 14 page MITSUMI IC for Control of Lithium-ion Batteries Charging MM1433 Pin No. Pin name I/O Functions Temperature detection input pin 12 TDET Input 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. 13 BAT1 Input Battery voltage input pins 14 BAT2 Input Detect battery voltage and control charging. Current detection pin 15 CS Input Detects current by external resistor (between CS and BAT) voltage drop and controls charging current. Rated current control phase compensation pin 16 CFB Input Oscillation is improved by connecting an external capacitor (around 100pf) between CFB and CNT for phase compensation. 17 CNT Output Charging control output pin Controls external PNP-Tr base for rated current rated voltage charging. 18 VCC Input Power supply input pin Rated voltage control adjustment pin 19 ADJ5 Input 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 20 VOUT Output For VCC overvoltage input: L For VCC recommended operating voltage: H 21 LED G Output LED C control output pin NPN-Tr open collector output. Refer to the flow chart for ON/OFF. 22 LED R Output 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. 23 OSC OUT Output 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 130k Ω and capacitor of 0.01µF. 24 OSC FB- Input Oscillator inverted input pin |
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