BQ25895_16 Datasheet, PDF (10/67 Pages) Texas Instruments – Adjustable Voltage 3.1-A Boost Operation

bq25895
SLUSC88A – MARCH 2015 – REVISED MAY 2016
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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
BAT OVER-VOLTAGE/CURRENT PROTECTION
V_BAT(OVP)
Battery over-voltage threshold
V_BAT rising, as percentage of
V_BAT(REG)
104%
V_{BAT(OVP_HYST)} Battery over-voltage hysteresis
V_BAT falling, as percentage of
V_BAT(REG)
2%
I_{BAT(FET_OCP)} System over-current threshold
9
A
THERMAL REGULATION AND THERMAL SHUTDOWN
T_REG
T_SHUT
T_SHUT(HYS)
V_(LTF)
Junction temperature regulation accuracy
Thermal shutdown rising temperature
Thermal shutdown hysteresis
Cold temperature threshold, TS pin voltage
rising threshold
REG08[1:0] = 11
Temperature rising
Temperature falling
As percentage to V_(REGN)
120
°C
160
°C
30
°C
72.75% 73.25% 73.75%
V_{(LTF_HYS)}
Cold temperature hysteresis, TS pin voltage
falling
As percentage to V_(REGN)
0.4%
V_(HTF)
V_(TCO)
Hot temperature TS pin voltage rising threshold As percentage to V_(REGN)
Cut-off temperature TS pin voltage falling
threshold
As percentage to V_(REGN)
47.75% 48.25% 48.75%
44.25% 44.75% 45.25%
COLD/HOT THERMISTOR COMPARATOR (BOOST MODE)
V_(BCOLD1)
Cold temperature threshold 1, TS pin voltage
rising threshold
As percentage to V_REGN
REG01[5] = 1
(Approximately –20°C w/ 103AT)
79.5%
80% 80.5%
V_{(BCOLD1_HYS)}
Cold temperature threshold 1, TS pin voltage
falling threshold
As percentage to V_REGN
REG01[5] = 1
1%
V_(BHOT2)
Hot temperature threshold 2, TS pin voltage
falling threshold
As percentage to V_REGN
REG01[7:6] = 10
(Approx. 65°C w/ 103AT)
30.75% 31.25% 31.75%
V_{(BHOT2_HYS)} Hot temperature threshold 2, TS pin voltage
As percentage to V_REGN
3%
rising threshold
REG01[7:6] =10
PWM
F_SW
PWM switching frequency, and digital clock
D_MAX
Maximum PWM duty cycle
BOOST MODE OPERATION
Oscillator frequency
1.32
1.68 MHz
97%
V_{(OTG_REG_RAN}
GE)
V_{(OTG_REG_STE}
P)
V_{(OTG_REG_ACC}
)
V_{(OTG_BAT)}
I_(OTG)
V_{(OTG_OVP)}
Typical boost mode regulation voltage range
Typical boost mode regulation voltage step
Boost mode regulation voltage accuracy
Battery voltage exiting boost mode
Boost mode output current range
Boost mode over-voltage threshold
I(PMID) = 0 A, BOOSTV=5.126V
(REG0A[7:4] = 1001)
BAT falling
Rising threshold
4.55
–3%
2.6
3.1
5.8
5.55 V
64
mV
3%
2.9 V
A
6
V
10
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