M62244FP Renesas Electronics Corporation., M62244FP Datasheet
M62244FP
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M62244FP Summary of contents
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... M62244FP Li-ion Battery Charge Controller IC Description M62244FP is a semiconductor integrated circuit designed as Li-ion battery charge control IC. Built-in constant current and constant voltage circuit allows for charging Li-ion battery. Features Available for 4.2V battery Built-in high precision ref. voltage (charge voltage) 4.2V 30mV ...
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... M62244FP Description of pins Pin No. name I/O Function 18 Vcc Power-supply input 16 LED1 O LED drive 17 LED2 I/O LED drive (with function for switching the LEDs’ blinking period) The blinking period of LED1 is set to 0.6 Hz (typ.) by fixing this signal low. 15 GND2 Ground for power supply ...
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... M62244FP Pin Description No. Equivalent circuit No. Pin name VCC 16 LED1 VCC 17 LED2 VCC 9 STP VCC 8 COSC VCC 5 Tdet VCC 10 Vref Rev.1.0, Sep.19.2003, page Equivalent circuit No. Pin name VCC VBG 20k 6 Vrchg 14 C2 100k 10k 20 Idet1 19 CTRL 40k Idet1 1 Idet2 Vcc 2 Vsense VCC ...
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... M62244FP Absolute maximum ratings Item Symbol Max. applied voltage Vmax CTRL pin: drive current Ictrl LED drive current Iled Vcvref pin: output current Icvref Allowable dissipation Pd Thermal derating K Operating temperature range Topr Storage temperature range Tstg 1000 800 600 400 200 ...
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... M62244FP Electrical Characteristics Unless otherwise specified VCC = 5.5 V, resistor for current detection = 0.2 , and pins for adjustment Block Item Symbol All Power-supply voltage VCC range for charge-control Circuit current Icc Battery-discharge Ibatout current (when not charging) Reference voltage Vref Reference IL=-1mA ...
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... M62244FP Block Item Symbol Tempera- Battery temperature Tth2 ture detection, cold end detector (-3 C) Hysteresis at the cold Tthhis2 end ( equivalent) Battery temperature Tth3 detection, hot-end 1 (43 C) Battery temperature Tth4 detection, hot-end 2 (55 C) Battery Battery connection- Vbc1 connec- detected voltage, low tion ...
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... M62244FP Item for detection Time detection takes Battery connection time = 10 ms Battery temperature 4 consecutive 50-ms periods = 200 ms 1.0-V 3 consecutive 25-ms periods = 75 ms 2.0-V 3 consecutive 200-ms periods = 600 ms 2.9-V 3 consecutive 200-ms periods = 600 ms 3.9- 4 consecutive 1.6-s periods = 6.4 s Excessive voltage 3 consecutive 400-ms periods = 1.2 s Charge completion 3 consecutive 3 ...
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... M62244FP Adapter-voltage standby low-end (L) mode A Adapter-voltage standby low-end (L) mode Charging stops until the adapter voltage returns to the allowed range. Stop charging Leave LED1 and LED2 in their pre-transition states NG Detection of excessive voltage OK Vcc<5.2V 6.3V<Vcc Detection of adapter-voltage 5.2V<Vcc<6.3V Return to the pre-transition state Battery-temperature standby mode C Charging stops until battery temperature returns ...
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... M62244FP D Precharge 1 Start constant-current charging at 3 mA. Reset and start 60-min. timer Vcc<4.95V 6.3V<Vcc Detection adapter voltage 2/3a 4.95V<Vcc<6.3V YES Passage of 10 min Detection of excessive voltage OK Vsense<1.0V Detection of battery voltage 1.0V<Vsense Vcc<4.95V 6.3V<Vcc Detection adapter voltage 2/3a 4.95V<Vcc<6.3V YES Passage of 60 min. ...
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... M62244FP Timing chart 4.2V 3.9V 2.9V 2.0V 1.0A Battery connected Precharge 2 125mA 100mA 3mA Precharge 1 LED1 Off LED2 2.9V detection 3.95V/3.9V detection 3.95V detection Charging-completed detection Precharge 1 Operation of the 60-min. timer Precharge 2 Operation of the 60-min. timer Fast charge Operation of the 240-min. timer Rev ...
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... M62244FP Description of operation The detection times given in this section are for Tchg = 240 minutes. The voltage values are all typical values. The charge-current values are for Detecting the adapter-voltage When an adapter is connected, the voltage from the adapter is the Vcc-pin voltage for the power supply of the IC. ...
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... M62244FP 3. Detecting battery temperature The voltage produced by division by the externally connected pull-up resistor (for Vcvref) and external thermistor is input to the Tdet pin. This voltage indicates the battery’s temperature. How the temperature limits affect operation is described below. (1) When charging is to start Charging starts as long as the temperature is within the range from – ...
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... M62244FP 7. Charging-completed judgement (1) When fast charging is in progress and the charging current falls below the charging-completed current, charging stops. One second later, the battery voltage is detected, and the IC performs one of the following operations according to the detected value. (a) If the voltage is 3. more, LED1 is turned off and LED2 is turned on. This indicates the completion of charging ...
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... M62244FP 11. Setting the voltages The recharge-start voltage, adapter-detection voltage 1, and adapter-detection voltage 2 can be adjusted to desired thresholds through the connection of external resistors that adjust the voltages on the Vrchg, Vadp1, and Vadp2 pins, respectively. When a pin is open, the corresponding voltage is the IC’s internal setting as specified in the electrical characteristics ...
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... M62244FP (5) Adapter-detection voltage 1 Vrchg_c Voltage on the Vadp1 pin (6) Adapter-detection voltage 2 Vrchg_c Voltage on the Vadp2 pin 12. Forcible termination of charging Charge is forcibly stopped by setting the STOP signal to low level. At this time, the LEDs are turned off and all timers are initialized. 13. Frequency of oscillation ...
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... Vadp1 3 Vadp2 4 Vcvref Adapter-voltage detection module STP Open or GND 9 Reset circuit LED1 16 LED2 17 GND2 15 LED control module M62244FP Rev.1.0, Sep.19.2003, page Logic power-supply Reference voltage source Reference voltage/logic power-supply module Oscillator Constant-voltage control Constant-current control Battery-connected detection 3 Charging-completed current detection Excessive current ...
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... M62244FP Package Dimensions Note : Please contact Renesas Technology Corporation for further details. Rev.1.0, Sep.19.2003, page 20T2X ...
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Sales Strategic Planning Div. Keep safety first in your circuit designs! 1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble ...