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ACT2823 데이터시트(PDF) 4 Page - Active-Semi, Inc

부품명 ACT2823
상세설명  Dual Cell Li-Ion Battery Charger and Power Bank Manager
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제조업체  ACTIVE-SEMI [Active-Semi, Inc]
홈페이지  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT2823 데이터시트(HTML) 4 Page - Active-Semi, Inc

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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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