BQ25890_16 Datasheet, PDF (14/69 Pages) Texas Instruments – Adjustable Voltage USB On-the-Go Boost Mode

bq25890, bq25892
SLUSC86B – 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
COLD/HOT THERMISTOR COMPARATOR (BOOST MODE)
V_(BCOLD0)
Cold temperature threshold, TS pin voltage
rising threshold
As percentage to V_REGN ,
REG01[5] = 0
(Approx. -10°C w/ 103AT)
76.5% 77% 77.5%
V_{(BCOLD0_HYS)}
Cold temperature threshold, TS pin voltage
falling threshold
As percentage to V_REGN
REG01[5] = 0
1%
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_(BHOT0)
Hot temperature threshold, TS pin voltage
falling threshold
As percentage to V_REGN
REG01[7:6] = 01
(Approx. 55°C w/ 103AT)
37.25% 37.75% 38.25%
V_{(BHOT0_HYS)}
Hot temperature threshold, TS pin voltage
rising threshold
As percentage to V_REGN
REG01[7:6] = 01
3%
V_(BHOT1)
Hot temperature threshold 1, TS pin voltage
falling threshold
As percentage to V_REGN
REG01[7:6] = 00
(Approx. 60°C w/ 103AT)
33.875 34.375 34.875
%
%
%
V_{(BHOT1_HYS)}
Hot temperature threshold 1, TS pin voltage
rising threshold
As percentage to V_REGN
REG01[7:6] = 00
3%
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)
I_{(OTG_OCP_ACC)}
Typical boost mode regulation voltage range
Typical boost mode regulation voltage step
Boost mode regulation voltage accuracy
Battery voltage exiting boost mode
Typical boost mode output current range
Boost mode RBFET over-current protection
accuracy
I(VBUS) = 0 A, BOOSTV=4.998V
(REG0A[7:4] = 0111)
BAT falling
BOOST_LIM =1.2 A
(REG0A[2:0]=010)
4.55
–3%
2.6
0.5
1.2
5.55 V
64
mV
3%
2.9 V
2.45 A
1.65 A
V_{(OTG_OVP)}
Boost mode over-voltage threshold
Rising threshold
5.8
6
V
14
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