Datasheet

bq24610
bq24617
www.ti.com SLUS892B –DECEMBER 2009–REVISED SEPTEMBER 2013
ELECTRICAL CHARACTERISTICS (continued)
5 V ≤ V
VCC
≤ 28 V, 0°C < T
J
< 125°C, typical values are at T
A
= 25°C, with respect to GND (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
REGN REGULATOR
V
REGN_REG
REGN regulator voltage V
VCC
> 10V, CE = HIGH, (0-40mA load) 5.7 6 6.3 V
I
REGN_LIM
REGN current limit V
REGN
= 0V, V
VCC
> V
UVLO
, CE = HIGH 40 mA
TTC INPUT AND SAFETY TIMER
T
PRECHG
Precharge safety timer range
(1)
Precharge time before fault occurs 1440 1800 2160 s
Fast charge saftey timer range, with +/-
T
CHARGE
Tchg = C
TTC
× K
TTC
1 10 h
10% accuracy
(1)
Fast charge timer accuracy
(1)
0.01 μF ≤ C
TTC
≤ 0.11 μF –10% 10%
K
TTC
Timer multiplier 5.6 min/nF
V
TTC
below this threshold disables the safety timer and
TTC low threshold 0.4 V
termination
TTC oscillator high threshold 1.5 V
TTC oscillator low threshold 1 V
TTC source/sink current 45 50 55 μA
BATTERY SWITCH (BATFET) DRIVER
R
DS_BAT_OFF
BATFET turnoff resistance V
ACN
> 5 V 150 Ω
R
DS_BAT_ON
BATFET turnon resistance V
ACN
> 5 V 20 kΩ
V
BATDRV_REG
= V
ACN
– V
BATDRV
when V
ACN
> 5 V and
V
BATDRV_REG
BATFET drive voltage 4.2 7 V
BATFET is on
AC SWITCH (ACFET) DRIVER
R
DS_AC_OFF
ACFET turnoff resistance V
VCC
> 5 V 30 Ω
R
DS_AC_ON
ACFET turnon resistance V
VCC
> 5 V 20 kΩ
V
ACDRV_REG
= V
VCC
– V
ACDRV
when V
VCC
> 5 V and
V
ACDRV_REG
ACFET drive voltage 4.2 7 V
ACFET is on
AC / BAT MOSFET DRIVERS TIMING
Driver dead time Dead time when switching between AC and BAT 10 μs
BATTERY DETECTION
t
WAKE
Wake time Max time charge is enabled 500 ms
I
WAKE
Wake current R
SENSE
= 10 mΩ 50 125 200 mA
t
DISCHARGE
Discharge time Maximum time discharge current is applied 1 s
I
DISCHARGE
Discharge current 8 mA
I
FAULT
Fault current after a timeout fault 2 mA
V
WAKE
Wake threshold (with-respect-to V
REG
) Voltage on VFB to detect battery absent during Wake 50 mV
Voltage on VFB to detect battery absent during
V
DISCH
Discharge threshold 1.55 V
discharge
PWM HIGH SIDE DRIVER (HIDRV)
High side driver (HSD) turnon
R
DS_HI_ON
V
BTST
– V
PH
= 5.5 V 3.3 6 Ω
resistance
R
DS_HI_OFF
High side driver turnoff resistance V
BTST
– V
PH
= 5.5 V 1 1.3 Ω
Bootstrap refresh comparator threshold
V
BTST_REFRESH
V
BTST
– V
PH
when low side refresh pulse is requested 4 4.2 V
voltage
PWM LOW SIDE DRIVER (LODRV)
R
DS_LO_ON
Low-side driver (LSD) turnon resistance 4.1 7 Ω
R
DS_LO_OFF
Low-side driver turnoff resistance 1 1.4 Ω
(1) Verified by design
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