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STW4102IQT Folha de dados(PDF) 15 Page - STMicroelectronics

Nome de Peças STW4102IQT
Descrição Electrónicos  Dual USB/wall adapter Li-ion battery charger with gas gauge
PDF  34 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STW4102IQT Folha de dados(HTML) 15 Page - STMicroelectronics

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STw4102
Application schematics
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5.2
Charge currents higher than 1 Amp
One-time programming (OTP) options offer the ability to use an external power device or an
external sense resistor to handle charge currents higher than 1 A from the wall adapter.
These OTP options are set by STMicroelectronics at factory level.
Figure 17.
Charge using external power devices
Table 9.
Component list for external power devices
Name
Typ. value
Tolerance
Comments
Rset
8k to 12k
1%
Main charge current setting
Rs
200m
Ω
1%
External current sense resistor
T1 or
M1 + D1
STT818B
STS2DPFS20V
PNP transistor
PMOS transistor with Schottky diode
Indicator LED
battery voltage
32kHz
Rset
Rcg
C1
StandBy
C2
Reset
Rs
STw4102
VOUT
SENSE
BATT
BATTSENSE
ISET
CVIS
C32KHZ
STDBY
ICG+
ICG-
GND
RESETN
SDA
SCL
VIO
LDOFB
LDODRV
CVREF
EOCHG
PWRDETECTN
MAIN
USBPWR
DRIVER
IO voltage
C3
T1
D1
M1
to power
management
TEST



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