BQ24152 Datasheet, PDF (6/38 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support

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