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BC3770 датащи(PDF) 17 Page - Freescale Semiconductor, Inc

номер детали BC3770
подробное описание детали  2.0 A Switch-Mode Charger
PDF  45 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

BC3770 датащи(HTML) 17 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
17
Freescale Semiconductor
BC3770
Figure 5. Typical Charging Profile in No Fault Condition
BATREG and VSYS
VBATREG
4.1V -4.475V, 25mV steps, 4.2V Default
VSYS_MIN
3.6V
VTRICKLE
2.5V
VSYS
VBATSNSP
Trickle Charge Mode
Pre-Charge
(Constant Current)
Mode
Fast Charge
(Constant Current)Mode
Top-OFF
Mode
Done Mode
(Charger Disabled by
Top-Off timer expired)
ITRICKLE
90mA
Soft-Start=2ms
IPRECHG
150-450mA,
100mA steps,
450mA Default
IFAST CHG
Input & Charge Current
IBAT
100-2000mA,
500mA Default
ITOPOFF
100-650mA, 50mA steps,
100mA Default
IBAT=0mA
INTB
Read
& clear
Full-Charge
(Constant Voltage)
Mode
Read
& clear
Note 1: INT1 for Top-Off Interrupt, INT2 for Done Interrupt, INT3 for Recharge Interrupt
Note 2: The time of Read &Clear depends on the processor.
Note 3: Each deglitch time is not included.
Note 4; Charger restart condition is made on purpose to show the behavior.
IIN_LIM
100-2050mA,
500mA Default
0mA
IFAST_CHG x RDSON_Q4
INT1
INT2
tPRECHG_TMR
45min
reset
tFAST_TMR
Fast charge timer if enabled,
programmable
reset
tTOPOFF_TMR
VRCH
> tBAT RECHG
t
Read
& clear
INT3
Recharge-
Mode
2.0V
System I/O
available
reset



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