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EA8945AQJ305 Datasheet(PDF) 7 Page - Active-Semi, Inc |
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EA8945AQJ305 Datasheet(HTML) 7 Page - Active-Semi, Inc |
7 / 44 page ACT8945A Rev 6, 01-Feb-16 - 7 - www.active-semi.com ActivePMUTM and ActivePathTM are trademarks of Active-Semi. I2CTM is a trademark of NXP. Copyright © 2016 Active-Semi, Inc. PIN DESCRIPTIONS CONT’D PIN NAME DESCRIPTION 25 VSEL Step-Down DC/DCs Output Voltage Selection. Drive to logic low to select default output voltage. Drive to logic high to select secondary output voltage. See the Output Voltage Programming section for more information. 26 SCL Clock Input for I2C Serial Interface. 27 SDA Data Input for I2C Serial Interface. Data is read on the rising edge of SCL. 28 nSTAT Active-Low Open-Drain Charger Status Output. nSTAT has a 8mA (typ) current limit, allowing it to directly drive an indicator LED without additional external components. See the Charge Status Indicator section for more information. 29, 30 BAT Battery Charger Output. Connect this pin directly to the battery anode (+ terminal) 31, 32 VSYS System Output Pin. Bypass to GA with a 10µF or larger ceramic capacitor. 33 CHGIN Power Input for the Battery Charger. Bypass CHGIN to GA with a capacitor placed as close to the IC as possible. 34 OUT2 Output Feedback Sense for REG2. 35 VP2 Power Input for REG2. Bypass to GP12 with a high quality ceramic capacitor placed as close to the IC as possible. 36 SW2 Switching Node Output for REG2. 37 GP12 Power Ground for REG1 and REG2. Connect GA, GP12 and GP3 together at a single point as close to the IC as possible. 38 SW1 Switching Node Output for REG1. 39 VP1 Power Input for REG1. Bypass to GP12 with a high quality ceramic capacitor placed as close to the IC as possible. 40 NC1 No Connect. Not internally connected. EP EP Exposed Pad. Must be soldered to ground on PCB. 24 TH Temperature Sensing Input. Connect to battery thermistor. TH is pulled up with a 102µA (typ) current internally. See the Battery Temperature Monitoring section for more information. 23 ISET Charge Current Set. Program the charge current by connecting a resistor (RISET) between ISET and GA. See the Charge Current Programming section for more information. |
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