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ACT8945A Datasheet(PDF) 7 Page - Qorvo, Inc

Part # ACT8945A
Description  Advanced PMU for Atmel SAMA5Dx Series & SAM9 Series Processors
PDF  46 Pages
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Manufacturer  QORVO [Qorvo, Inc]
Direct Link  https://www.qorvo.com/
Logo QORVO - Qorvo, Inc

ACT8945A Datasheet(HTML) 7 Page - Qorvo, Inc

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Data Sheet Rev. G, January 2020 | Subject to change without notice
7 of 46
www.qorvo.com
© 2020 Qorvo US, Inc. All rights reserved.
ACT8945A
Advanced PMU for Atmel SAMA5Dx Series & SAM9 Series Processors
PIN DESCRIPTIONS CONT’D
PIN
NAME
DESCRIPTION
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.
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.
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.



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