전자부품 데이터시트 검색엔진 |
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ACT2823 데이터시트(PDF) 4 Page - Active-Semi, Inc |
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ACT2823 데이터시트(HTML) 4 Page - Active-Semi, Inc |
4 / 25 page ACT2823 REV 1, 01-DEC-2016 Innovative PowerTM ActiveSwitcherTM is a trademark of Active-Semi. 4 PIN DESCRIPTIONS - QFN PIN NAME DESCRIPTION 1 CSN Output current sense negative input. 2,3 CSP Output current sense positive input. 4, 5 VOUT Power Output Pin. 6, 7 VIN USB or AC Adapter input. 8 OVGATE Output to drive optional external NMOS protect IC from over voltage. 9 OVSENS USB or AC Adapter input sense pin. 10 SCL I2C clock input. 11 SDA I2C data input. 12 NC Not connected. This pin must be floating. Do not connect this pin to any etch on the PCB. 13 HSB High side bias pin used for high side FET gate drive. Connect a 47nF ceramic capacitor from HSB to SW. 14,15 SW Internal switch connected to a terminal of the output inductor. 16,17 BAT Charging output pin. Bypass to PGND with high quality ceramic capacitors placed as close to the IC as possible. Connect to the charging current sense resistor. 18 BATS Battery current sense positive input. Connect to CS resistor positive terminal with Kevin connection. 19 BATP Battery current sense negative input. Connect to CS resistor negative terminal with Kevin connection. 20 NC Not connected. This Pin must be floating. Do not connect this pin to any etch on the PCB. 21 PGND Power ground. 22 BATN Battery negative terminal. Connect directly to PGND. 23 ICST Fast charge current setting pin. Connect a resistor from this pin to AGND to set the charging current. The current setting ranges from 0.5A-1.5A. The voltage at this pin reflects the charge current and discharge current in charge mode and discharge mode, respectively. 24 TH Temperature sensing input. Connect to a battery thermistor terminal. 25 VREG +5V Bias output. Connect a 1.0uF to this pin. This pin supplies up to 50mA output current. The bias turns on in charge mode and discharge mode. Internal register bit can shut down the bias. Bias turns off in HZ mode. 26 AGND Logic ground output. Connect this pin to the exposed PGND pad on same layer with IC. 27 PB Push button input. When this pin is pushed for more than 40ms, LED1-4 indicators are enabled for 5 seconds. 28 LED1 Battery level indicator. 29 LED2 Battery level indicator. 30 LED3 Battery level indicator. 31 LED4 Battery level indicator. 32 LEDLS1 LED1 threshold level shift. Connect a resistor from the pin to AGND to shift LED1 threshold voltage. 33 LEDLS2 LED2 threshold level shift. Connect a resistor from the pin to AGND to shift LED2 threshold voltage. 34 LEDLS3 LED3 threshold level shift. Connect a resistor from the pin to AGND to shift LED3 threshold voltage. 35 LEDLS4 LED4 threshold level shift. Connect a resistor from the pin to AGND to shift LED4 threshold voltage. 36 PT LED indication mode input. The 5 modes of LED indication patterns are set by a voltage at this pin. Connect a resistor at the pin to set the voltage and an LED indication pattern. 37 RIMC Battery impedance compensation input. Connect a resistor to this pin to offset the LED threshold voltages in charge mode and discharge mode. 38 HYST Hysteresis window setting input. Connect a resistor to ground to set LED1, 2, 3, 4 hysteresis windows. 39 DM Output port auto detection input. Connected to portable device D-. 40 DP Output port auto detection input. Connected to portable device D+. Exposed Pad PGND Electrically connected to AGND and PGND. Also used as thermal pad to remove heat from the IC. Connect to the top layer ground plane and use recommended thermal vias to internal and back side PCB ground planes. |
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