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BQ24045 Datasheet(PDF) 9 Page - Texas Instruments

Part # BQ24045
Description  SLUS941F ?밪EPTEMBER 2009?밨EVISED MARCH 2015
Download  38 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ24045 Datasheet(HTML) 9 Page - Texas Instruments

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bq24040, bq24041, bq24045
www.ti.com
SLUS941F – SEPTEMBER 2009 – REVISED MARCH 2015
7.6 Timing Requirements
MIN
TYP
MAX
UNIT
INPUT
Time measured from VIN: 0V → 5V 1μs rise-time to
tDGL(PG_PWR)
Deglitch time on exiting sleep.
45
μs
PG = low, VOUT = 3.6V
tDGL(PG_NO-
Deglitch time on VHYS-INDT power down.
Time measured from VIN: 5V → 3.2V 1μs fall-time to
29
ms
PWR)
Same as entering sleep.
PG = OC, VOUT = 3.6V
tDGL(OVP-SET)
Input over-voltage blanking time
VIN: 5V → 12V
113
μs
Time measured from VIN: 12V → 5V 1μs fall-time to
tDGL(OVP-REC)
Deglitch time exiting OVP
30
μs
PG = LO
ISET SHORT CIRCUIT TEST
Deglitch time transition from ISET short to
Clear fault by disconnecting IN or cycling (high / low)
tDGL_SHORT
1
ms
IOUT disable
TS/BAT_EN
PRECHARGE – SET BY PRETERM PIN: bq24040 / bq24045; Internally Set: bq24041
Deglitch time on pre-charge to fast-charge
tDGL1(LOWV)
70
μs
transition
Deglitch time on fast-charge to pre-charge
tDGL2(LOWV)
32
ms
transition
TERMINATION – SET BY PRE-TERM PIN: bq24040 / bq24045
tDGL(TERM)
Deglitch time, termination detected
29
ms
Elevated termination threshold initially
tTerm-Start
1.25
min
active for tTerm-Start
RECHARGE OR REFRESH – bq24040 / bq24045
VIN = 5V, VTS = 0.5V, VOUT: 4.25V → 3.5V in 1μs;
tDGL1(RCH)
Deglitch time, recharge threshold detected
29
ms
tDGL(RCH) is time to ISET ramp
Deglitch time, recharge threshold detected
VIN = 5V, VTS = 0.5V, VOUT = 3.5V inserted; tDGL(RCH)
tDGL2(RCH)
3.6
ms
in OUT-Detect Mode
is time to ISET ramp
BATTERY DETECT ROUTINE – bq24040 / bq24045 (NOTE: In Hot mode VO(REG) becomes VO_HT(REG))
tDGL(HI/LOW
Regulation time at VREG or VREG-BD
25
ms
REG)
BATTERY CHARGING TIMERS AND FAULT TIMERS: bq24040 and bq24045 only
Restarts when entering Pre-charge; Always enabled
tPRECHG
Pre-charge safety timer value
1700
1940
2250
s
when in pre-charge.
Clears fault or resets at UVLO, TS/BAT_EN disable,
tMAXCH
Charge safety timer value
34000
38800
45000
s
OUT Short, exiting LOWV and Refresh
BATTERY-PACK NTC MONITOR; TS Terminal: bq24040 / bq24045: 10k NTC
Deglitch exit TTDM between states
57
ms
tDGL(TTDM)
Deglitch enter TTDM between states
8
μs
Normal to Cold Operation; VTS: 0.6V → 1V
50
ms
tDGL(TS_10C)
Deglitch for TS thresholds: 10C.
Cold to Normal Operation; VTS: 1V → 0.6V
12
ms
tDGL(TS)
Deglitch for TS thresholds: 0/45/60C.
Battery charging
30
ms
Copyright © 2009–2015, Texas Instruments Incorporated
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