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EA8945AQJ305 Datasheet(PDF) 7 Page - Active-Semi, Inc

Part # EA8945AQJ305
Description  Advanced PMU for Atmel SAMA5Dx Series & SAM9 Series Processors
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

EA8945AQJ305 Datasheet(HTML) 7 Page - Active-Semi, Inc

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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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