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BQ24152 Datasheet(PDF) 6 Page - Texas Instruments

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Part No. BQ24152
Description  Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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BQ24152 Datasheet(HTML) 6 Page - Texas Instruments

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bq24152
SLUS847 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Circuit of Figure 1, VBUS = 5 V, HZ_MODE = 0, OPA_MODE = 0 (charger mode operation), TJ = 0°C to 125°C, TJ = 25°C for
typical values (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
BOOST MODE OPERATION FOR VBUS (OPA_MODE = 1, HZ_MODE = 0)
Boost output voltage (to pin
V(BUS_B)
2.5 V < V(AUXPWR) < 4.5 V, Open loop
5.05
V
VBUS)
Boost output voltage accuracy
Including line and load regulation
±3%
Maximum output current for
I(BO)
V(BUS_B) = 5.05 V, 2.5 V < V(AUXPWR) < 4.5 V
200
mA
boost
Cycle by cycle current limit for
I(BLIMIT)
V(BUS_B) = 5.05 V, 2.5 V < V(AUXPWR) < 4.5 V
1
A
boost
Overvoltage protection threshold
Threshold over VBUS to turn off converter during
5.8
6
6.2
V
for boost (VBUS pin)
boost
VBUS(OVP)
VBUS(OVP) hysteresis
VBUS falling from above VBUS(OVP)
125
mV
Maximum battery voltage for
V(CSOUT) rising edge during boost
4.75
4.9
5.05
V
boost (CSOUT pin)
V(BAT)MAX
V(BAT)MAX hysteresis
V(CSOUT) falling from above VBATMAX
200
mV
During boosting
2.5
V
Minimum battery voltage for
V(BAT)MIN
boost (AUXPWR pin)
Before boost starts
2.9
3.05
V
Boost output resistance at
high-impedance mode (From
HZ_MODE = 1
165
k
VBUS to PGND)
PROTECTION
Input VBUS OVP threshold
Threshold over VBUS to turn off converter during
6.3
6.5
6.7
V
voltage
charge
V(OVP-IN)
V(OVP_IN) hysteresis
VBUS falling from above V(OVP_IN)
140
mV
V(CSOUT) threshold over V(OREG) to turn off charger
Battery OVP threshold voltage
110
117
121 %V
(ORE
during charge
V(OVP)
G)
V(OVP) hysteresis
Lower limit for V(CSOUT) falling from above V(OVP)
11
Cycle-by-cycle current limit for
I(LIMIT)
Charge mode operation
1.5
2.3
3
A
charge
Short-circuit voltage threshold
V(AUXPWR) falling
1.9
2
2.1
V
V(SHORT)
V(SHORT) hysteresis
V(AUXPWR) rising from below V(SHORT)
100
mV
I(SHORT)
Short-circuit current
V(AUXPWR) ≤ V(SHORT)
5
10
15
mA
T(SHTDWN)
Thermal trip
165
Thermal hysteresis
10
°C
T(CF)
Thermal regulation threshold(3)
Charge current begins to reduce
120
Time constant for the 32 second
T(32S)
32 Second mode
12
32
s
timer
(3)
Verified by design
6
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): bq24152


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