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BQ24157S View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
BQ24157S 1.55-A Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support TI
Texas Instruments TI
BQ24157S Datasheet PDF : 45 Pages
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Not Recommended for New Designs
www.ti.com
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), TJ = –40°C to 125°C, TJ = 25°C for typical
values (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
CHARGE MODE PROTECTION
VOVP_IN_USB Input VBUS OVP threshold voltage
VBUS threshold to turn off converter during charge
VOVP
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)
ILIMIT
Cycle-by-cycle current limit for charge
Charge mode operation
VSHORT
Trickle to fast charge threshold
VSHORT hysteresis
V(CSOUT) rising
V(CSOUT) falling below VSHORT
ISHORT
Trickle charge charging current
V(CSOUT) VSHORT)
BOOST MODE OPERATION FOR VBUS (OPA_MODE = 1, HZ_MODE = 0)
VBUS_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
%VOREG
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%
IBO
IBLIMIT
VBUSOVP
VBATMAX
VBATMIN
Maximum output current for boost
Cycle by cycle current limit for boost
Overvoltage protection threshold for boost
(VBUS pin)
VBUSOVP hysteresis
Maximum battery voltage for boost
(CSOUT pin)
VBATMAX hysteresis
Minimum battery voltage for boost
(CSOUT pin)
VBUS_B = 5.05 V, 3.3 V < V(CSOUT) < 4.5 V,
TJ= 0°C – 125°C
VBUS_B = 5.05 V, 2.5 V < V(CSOUT) < 4.5 V
Threshold over VBUS to turn off converter during
boost
VBUS falling from above VBUSOVP
V(CSOUT) rising edge during boost
V(CSOUT) falling from above VBATMAX
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
k
PROTECTION
TSHTDWN)
Thermal trip
Thermal hysteresis
165
10
°C
TCF
Thermal regulation threshold
Charge current begins to reduce
120
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