BQ25890H Datasheet, PDF (13/66 Pages) Texas Instruments – I2C Controlled Single Cell 5-A Fast Charger

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7.6 Timing Requirements
VBUS/BAT POWER UP
t_BADSRC
Bad Adapter detection duration
BAT OVER-VOLTAGE PROTECTION
t_BATOVP
Battery over-voltage deglitch time to disable
charge
BATTERY CHARGER
t_RECHG
Recharge deglitch time
CURRENT PULSE CONTROL
t_{PUMPX_STOP}
Current pulse control stop pulse
t_{PUMPX_ON1}
Current pulse control long on pulse
t_{PUMPX_ON2}
Current pulse control short on pulse
t_{PUMPX_OFF}
Current pulse control off pulse
t_{PUMPX_DLY}
Current pulse control stop start delay
BATTERY MONITOR
t_CONV
Conversion time
QON AND SHIPMODE TIMING
t_SHIPMODE
QON low time to turn on BATFET and exit ship
mode
t_{QON_RST}
QON low time to enable full system reset
t_{BATFET_RST}
BATFET off time during full system reset
t_{SM_DLY}
Enter ship mode delay
I2C INTERFACE
f_SCL
SCL clock frequency
DIGITAL CLOCK and WATCHDOG TIMER
f_LPDIG
f_DIG
Digital low power clock
Digital clock
t_WDT
Watchdog reset time
CONV_RATE(REG02[6]) = 0
T_J = –10°C to +60°C
T_J = –10°C to +60°C
T_J = –10°C to +60°C
T_J = –10°C to +60°C
REGN LDO disabled
REGN LDO enabled
WATCHDOG
(REG07[5:4])=11, REGN LDO
disabled
WATCHDOG
(REG07[5:4])=11, REGN LDO
enabled
BQ25890H
SLUSCC5 – SEPTEMBER 2016
MIN NOM MAX UNIT
30
msec
1
µs
20
ms
430
570 ms
240
360 ms
70
130 ms
70
130 ms
80
225 ms
8 1000 ms
0.8
1.3 s
15.5
23 s
250
400 ms
10
15 s
400 kHz
18
1320
30
1500
45 kHz
1680 kHz
100
160
s
136
160
s
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