BQ25872 Datasheet, PDF (12/68 Pages) Texas Instruments – Battery Switch Charger

bq25872
SLUSCQ6 – OCTOBER 2016
6.6 Timing Requirements
PROTECTION
OSC
t_{VBUS_OVP}
t_{VBUS_OVP}
t_{IBUS_OCP_BLANK}
t_{IBUS_OCP}
t_{IBUS_OCP_HP}
t_{IBUS_OCP_RST}
t_{IBAT_OCP}
t_{VDROP_OVP}
t_{VBAT_OVP}
t_{VOUT_OVP}
t_{LDO_RES}
t_{LDO_ACTIVE}
T_{TS_OTP}
t_IREV
t_SCP
t_{ON_VOUT}
t_{OFF_FET}
t_{OFF_FLT}
t_WTDG
Oscillator frequency
VBUS OVP deglitch time, VBUS_OVP_DLY = 0
VBUS OVP deglitch time, VBUS_OVP_DLY = 1
IBUS OCP deglitch time, OCP_RES = 0
IBUS OCP deglitch time in hiccup mode, OCP_RES = 1
Retry wait time for IBUS OCP in hiccup mode, OCP_RES = 1
Hiccup count reset timer
IBAT OCP deglitch time
VDROP deglitch time
VBAT OVP deglitch time
VOUT OVP deglitch time
LDO response time for IBUS, IBAT, VBAT, VOUT
LDO active signal deglitch time
TS_BAT and TS_BUS deglitch time
Reverse current protection (RCP) deglitch time
Short circuit protection (RCP) deglitch time
VOUT soft-start rise time
Battery switch turn off time
Battery switch turn-off time, R_VBUS = 100 Ω, C_VBUS = 0 µF, when V_VUSB >
VUSB_OVP to V_OVPGATE falling (95 % threshold)
Watchdog
timer
WATCHDOG[3:2] = 01
WATCHDOG[3:2] = 10
WATCHDOG[3:2] = 11
www.ti.com
MIN NOM MAX UNIT
1.8
2
8
128
8
8
100
400
512
64
64
64
1
128
100
8
2
0.5
1
100
0.5
1
2
2.4 MHz
µs
µs
µs
µs
ms
ms
µs
µs
µs
µs
ms
µs
ms
µs
µs
ms
µs
ns
s
s
s
12
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