BQ24298_15 Datasheet, PDF (8/51 Pages) Texas Instruments – bq24298 I2C Controlled 3A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG

bq24298
SLUSC59 – APRIL 2015
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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
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
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
120
°C
160
°C
30
°C
1
ms
Thermal shutdown falling deglitch
Temperature decreasing delay
1
ms
COLD/HOT THERMISTER COMPARATOR
V_LTF
Cold temperature threshold, TS pin
voltage rising threshold
Charger suspends charge. as percentage to V_REGN
73% 73.5% 74%
V_{LTF_HYS}
Cold temperature hysteresis, TS pin
voltage falling
As percentage to V_REGN
0.4%
V_HTF
Hot temperature TS pin voltage rising
threshold
As percentage to V_REGN
46.6% 47.2% 48.8%
V_TCO
Cut-off temperature TS pin voltage falling
threshold
As percentage to V_REGN
44.2% 44.7% 45.2%
Deglitch time for temperature out of range
detection
V_TS > V_LTF, or V_TS < V_TCO, or V_TS < V_HTF
10
ms
VBCOLD0
Cold temperature threshold, TS pin
voltage rising threshold
As percentage to V_REGN REG02[1] = 0
(Approx. -10°C w/ 103AT)
75.5% 76% 76.5%
VBCOLD0_HYS
As percentage to V_REGN REG02[1] = 0
(Approx. 1°C w/ 103AT)
1%
VBCOLD1
Cold temperature threshold 1, TS pin
voltage rising threshold
As percentage to V_REGN REG02[1] = 1
(Approx. -20°C w/ 103AT)
78.5% 79% 79.5%
VBCOLD1_HYS
As percentage to V_REGN REG02[1] = 1
(Approx. 1°C w/ 103AT)
1%
VBHOT0
Hot temperature threshold, TS pin voltage As percentage to V_REGN REG06[3:2] = 01
falling threshold
(Approx. 55°C w/ 103AT)
35.5% 36% 36.5%
VBHOT0_HYS
As percentage to V_REGN REG06[3:2] = 01
(Approx. 3°C w/ 103AT)
3%
VBHOT1
Hot temperature threshold 1, TS pin
voltage falling threshold
As percentage to V_REGN REG06[3:2] = 00
(Approx. 60°C w/ 103AT)
32.5% 33% 33.5%
VBHOT1_HYS
As percentage to V_REGN REG06[3:2] = 00
(Approx. 3°C w/ 103AT)
3%
VBHOT2
Hot temperature threshold 2, TS pin
voltage falling threshold
As percentage to V_REGN REG06[3:2] = 10
(Approx. 65°C w/ 103AT)
29.5% 30% 30.5%
VBHOT2_HYS
As percentage to V_REGN REG06[3:2] = 10
(Approx. 3°C w/ 103AT)
3%
CHARGE OVER-CURRENT COMPARATOR
I_{HSFET_OCP}
HSFET cycle by cycle over-current
threshold
5.3
7.5
A
V_{LSFET_UCP}
LSFET charge under-current falling
threshold
From sync mode to non-sync mode
100
mA
F_SW
PWM Switching frequency, and digital
clock
1300 1500 1700 kHz
D_MAX
V_{BTST_REFRESH}
Maximum PWM duty cycle
Bootstrap refresh comparator threshold
VBTST-VSW when LSFET refresh pulse is requested,
VBUS = 5 V
97%
3.6
V
BOOST MODE OPERATION
V_{OTG_REG_ACC}
V_{OTG_REG_ACC}
V_{OTG_BAT}
I_OTG
OTG output voltage
OTG output voltage accuracy
Battery voltage exiting OTG mode
OTG mode output current
I(VBUS) = 0, REG06[7:4] = 0111 (4.998 V)
I(VBUS) = 0, REG06[7:4] = 0111 (4.998 V)
BAT falling, REG04[1] = 1
REG01[0] = 0
REG01[0] = 1
5
V
-3%
3%
2.9
V
1
A
1.5
A
V_{OTG_OVP}
V_{OTG_OVP_HYS}
OTG over-voltage threshold
OTG over-voltage threshold hysteresis
Rising threshold
Falling threshold
5.8
6
V
300
mV
8
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