BQ24195 Datasheet, PDF (9/41 Pages) Texas Instruments – I2C Controlled 2.5A / 4.5A Single Cell USB/Adapter Charger With 5.1V at 1A / 5.1V at 2.1A Synchronous Boost Operation

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bq24195
bq24195L
SLUSB97 – OCTOBER 2012
ELECTRICAL CHARACTERISTICS (continued)
V_{VBUS_UVLOZ} < V_VBUS < V_ACOV and V_VBUS > V_BAT + V_SLEEP, T_J = –40°C to 125°C and T_J = 25°C for typical values unless other
noted.
PARAMETER
TEST CONDITIONS
BAT OVER-VOLTAGE PROTECTION
V_BATOVP
V_{BATOVP_HYST}
t_BATOVP
Battery over-voltage threshold
Battery over-voltage hysteresis
Battery over-voltage deglitch time to disable
charge
V_BAT rising, as percentage of V_{BAT_REG}
V_BAT falling, as percentage of V_{BAT_REG}
THERMAL REGULATION AND THERMAL SHUTDOWN
T_{Junction_REG}
T_SHUT
T_{SHUT_HYS}
Junction temperature regulation accuracy
Thermal shutdown rising temperature
Thermal shutdown hysteresis
Thermal shutdown rising deglitch
REG06[1:0] = 11
Temperature increasing
Temperature increasing delay
Thermal shutdown falling deglitch
Temperature decreasing delay
COLD/HOT THERMISTER COMPARATOR
V_LTF
Cold temperature threshold, TS pin voltage
rising threshold
Charger suspends charge. As Percentage to V_REGN
V_{LTF_HYS}
Cold temperature hysteresis, TS pin voltage
falling
As Percentage to V_REGN
V_HTF
Hot temperature TS pin voltage falling
threshold
As Percentage to V_REGN
V_TCO
Cut-off temperature TS pin voltage falling
threshold
As Percentage to V_REGN
Deglitch time for temperature out of range
detection
V_TS > V_LTF, or V_TS < V_TCO, or V_TS < V_HTF
CHARGE OVER-CURRENT COMPARATOR
I_{HSFET_OCP}
HSFET over-Current threshold
I_{BATFET_OCP}
System over load threshold
CHARGE UNDER-CURRENT COMPARATOR (CYCLE-BY-CYCLE)
V_{LSFET_UCP}
LSFET charge under-current falling
threshold
From sync mode to non-sync mode
PWM OPERATION
F_SW
D_MAX
V_{BTST_REFRESH}
PWM Switching frequency, and digital clock
Maximum PWM duty cycle
Bootstrap refresh comparator threshold
VBTST-VSW when LSFET refresh pulse is
requested, VBUS=5V
VBTST-VSW when LSFET refresh pulse is
requested, VBUS>6V
MIN TYP
104%
2%
1
115
120
160
30
1
1
73% 73.5%
0.2% 0.4%
46.6% 47.2%
44.2% 44.7%
10
5.3
7
9
100
1300
1500
97%
3.6
4.2
MAX UNITS
µs
125 °C
°C
°C
ms
ms
74%
0.6%
48.8%
45.2%
ms
A
A
mA
1700 kHz
V
Copyright © 2012, Texas Instruments Incorporated
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