BQ24157S Datasheet, PDF (7/45 Pages) Texas Instruments – Full USB Compliance and USB-OTG Support

Not Recommended for New Designs
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bq24157S
SLUSB76B – FEBRUARY 2013 – REVISED MAY 2015
Electrical Characteristics (continued)
Circuit of Figure 28, VBUS = 5 V, HZ_MODE = 0, OPA_MODE = 0 (CD = 0), T_J = –40°C to 125°C, T_J = 25°C for typical
values (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
CHARGE MODE PROTECTION
V_{OVP_IN_USB} Input VBUS OVP threshold voltage
VBUS threshold to turn off converter during charge
V_OVP
Output OVP threshold voltage
V_(OVP) hysteresis
V_(CSOUT) threshold over V_(OREG) to turn off charger
during charge
Lower limit for V_(CSOUT) falling from above V_(OVP)
I_LIMIT
Cycle-by-cycle current limit for charge
Charge mode operation
V_SHORT
Trickle to fast charge threshold
V_SHORT hysteresis
V_(CSOUT) rising
V_(CSOUT) falling below V_SHORT
I_SHORT
Trickle charge charging current
V_(CSOUT) ≤ V_SHORT)
BOOST MODE OPERATION FOR V_BUS (OPA_MODE = 1, HZ_MODE = 0)
V_{BUS_B}
Boost output voltage (to VBUS pin)
2.5 V < V_(CSOUT) < 4.5 V
Boost output voltage accuracy
Including line and load regulation
6.3
6.5
6.7
V
110
117
121
%V_OREG
11
1.8
2.4
3.0
A
2.0
2.1
2.2
V
100
mV
20
30
40 mA
5.05
–3%
V
3%
I_BO
I_BLIMIT
V_BUSOVP
V_BATMAX
V_BATMIN
Maximum output current for boost
Cycle by cycle current limit for boost
Overvoltage protection threshold for boost
(VBUS pin)
V_BUSOVP hysteresis
Maximum battery voltage for boost
(CSOUT pin)
V_BATMAX hysteresis
Minimum battery voltage for boost
(CSOUT pin)
V_{BUS_B} = 5.05 V, 3.3 V < V_(CSOUT) < 4.5 V,
T_J= 0°C – 125°C
V_{BUS_B} = 5.05 V, 2.5 V < V_(CSOUT) < 4.5 V
Threshold over VBUS to turn off converter during
boost
V_BUS falling from above V_BUSOVP
V_(CSOUT) rising edge during boost
V_(CSOUT) falling from above V_BATMAX
During boosting
Before boost starts
350
mA
1.0
A
5.8
6.0
6.2
V
162
mV
4.75
4.9 5.05
V
200
mV
2.5
V
2.9 3.05
V
Boost output resistance at high-impedance
mode (from VBUS to PGND)
CD = 1 or HZ_MODE = 1
217
kΩ
PROTECTION
T_SHTDWN)
Thermal trip
Thermal hysteresis
165
10
°C
T_CF
Thermal regulation threshold
Charge current begins to reduce
120
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