BQ25890_16 Datasheet, PDF (16/69 Pages) Texas Instruments – Adjustable Voltage USB On-the-Go Boost Mode

bq25890, bq25892
SLUSC86B – MARCH 2015 – REVISED MAY 2016
8.6 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
MIN NOM
30
1
20
430
240
70
70
80
8
1.25
12
350
10
18
1320
30
1500
100
160
136
160
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MAX UNIT
msec
µs
ms
570 ms
360 ms
130 ms
130 ms
225 ms
1000 ms
2.25 s
18 s
550 ms
15 s
400 kHz
45 kHz
1680 kHz
s
s
16
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