STW4102IQT STMicroelectronics, STW4102IQT Datasheet - Page 15

• Manufacturer Part Number: STW4102IQT
• Description: IC LI-ION BATT CHRGR DUAL 24QFN
• Manufacturer: STMicroelectronics

Specifications of STW4102IQT

• Function: Battery Monitor
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 4.25 V ~ 16 V
• Operating Temperature: -30°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-QFN
• Product: Charge Management
• Output Voltage: 4.7 V
• Output Current: 100 mA to 1000 mA
• Operating Supply Voltage: 4.25 V to 16 V
• Supply Current: 2 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 30 C
• Mounting Style: SMD/SMT
• For Use With: 497-8514 - BOARD EVAL STW4102/STM32497-8338 - BOARD EVAL BASED ON STW4102
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6840-2

STw4102
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.
M1 + D1
Name
T1 or
R
R
set
s
management
to power
Component list for external power devices
STS2DPFS20V
Indicator LED
Reset
Typ. value
IO voltage
STT818B
battery voltage
8k to 12k
C2
200mΩ
SCL
SDA
USBPWR
RESETN
VIO
EOCHG
LDODRV
LDOFB
MAIN
CVREF
PWRDETECTN
Tolerance
1%
1%
DRIVER
STw4102
Main charge current setting
External current sense resistor
PNP transistor
PMOS transistor with Schottky diode
M1
T1
GND
D1
TEST
BATTSENSE
C32KHZ
STDBY
SENSE
VOUT
Comments
BATT
ICG+
ICG-
CVIS
ISET
Application schematics
32kHz
StandBy
Rset
C1
C3
Rs
Rcg
15/34