BQ24070_14 Datasheet, PDF (6/33 Pages) Texas Instruments – System Power-Path Management IC

bq24070, bq24071
SLUS694G – MARCH 2006 – REVISED DECEMBER 2014
www.ti.com
Electrical Characteristics (continued)
over junction temperature range (0°C ≤ T_J ≤ 125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
OUT PIN - BATTERY SUPPLEMENT MODE
V_BSUP1
V_BSUP2
Enter battery supplement mode
(battery supplements OUT current V_I(BAT)> 2 V
in the presence of input source
Exit battery supplement mode
V_I(BAT)> 2 V
V_I(OUT)
≤ V_I(BAT)
– 60 mV
V
V_I(OUT)
≥ V_I(BAT)
– 20 mV
OUT PIN - SHORT CIRCUIT
I_OSH1
BAT to OUT short-circuit recovery
R_SHIN
IN to OUT short-circuit limit
BAT PIN CHARGING – PRECHARGE
Current source between BAT to OUT for
short-circuit recovery to
V_I(OUT) ≤ V_I(BAT) –200 mV
V_I(OUT) ≤ 1 V
10
mA
500
Ω
V_(LOWV)
Precharge to fast-charge transition
threshold
Voltage on BAT
2.9
3
3.1
V
T_DGL(F)
Deglitch time for fast-charge to
precharge transition⁽⁴⁾
I_O(PRECHG)
Precharge range
V_(PRECHG)
Precharge set voltage
BAT PIN CHARGING - CURRENT REGULATION
t_FALL = 100 ns, 10 mV overdrive,
V_I(BAT) decreasing below threshold
1 V < V_I(BAT) < V_(LOWV), t < t_(PRECHG),
I_O(PRECHG) = (K_(SET) × V_(PRECHG))/ R_SET
1 V < V_I(BAT) < V_(LOWV), t < t_(PRECHG)
22.5
ms
10
150
mA
225
250
275
mV
I_O(BAT)
R_PBAT
V_(SET)
Battery charge current range⁽⁵⁾
BAT to OUT pullup
Battery charge current set
voltage ⁽⁶⁾
K_(SET)
Charge current set factor, BAT
USB MODE INPUT CURRENT LIMIT
V_{I (BAT)} > V_(LOWV), Mode = High
I_OUT(BAT) = (K_(SET) × V_(SET) / R_SET),
V_I(OUT) > V_O(OUT-REG) + V_(DO-MAX)
V_{I (BAT)}< 1 V
Voltage on ISET1, V_VCC ≥ 4.35 V,
V_I(OUT)- V_I(BAT) > V_(DO-MAX),
V_I(BAT) > V_(LOWV)
100 mA ≤ I_O(BAT) ≤ 1.5 A
10 mA ≤ I_O(BAT) ≤ 100 mA⁽⁷⁾
100
1000
1500
mA
1000
Ω
2.47
2.50
2.53
V
375
425
450
300
450
600
I_(USB)
USB input port current range
ISET2 = Low
ISET2 = High
80
90
100
mA
400
500
BAT PIN CHARGING VOLTAGE REGULATION, V_{O (BAT-REG)} + V _(DO-MAX) < V_CC, I_TERM < I_BAT(OUT) ≤ 1 A
Battery charge voltage
4.2
V
V_O(BAT-REG)
Battery charge voltage regulation ^TA ^{= 25°C}
accuracy
–0.5%
–1%
0.5%
1%
CHARGE TERMINATION DETECTION
I_(TERM)
V_(TERM)
T_DGL(TERM)
Charge termination detection
range
V_I(BAT) > V_(RCH),
I_(TERM) = (K_(SET) × V_(TERM))/ R_SET
10
Charge termination set voltage,
V_I(BAT) > V_(RCH) , Mode = High
230
measured on ISET1
V_I(BAT) > V_(RCH) , Mode = Low
95
Deglitch time for termination
detection
t_FALL = 100 ns, 10 mV overdrive,
I_CHG increasing above or decreasing below
threshold
150
mA
250
270
mV
100
130
22.5
ms
TEMPERATURE SENSE COMPARATORS
V_LTF
V_HTF
I_TS
T_DGL(TF)
High voltage threshold
Low voltage threshold
Temperature sense current source
Temp fault at V(TS) > V_LTF
Temp fault at V(TS) < V_HTF
Deglitch time for temperature fault
detection ⁽⁴⁾
R_(TMR) = 50 kΩ, V_I(BAT) increasing or
decreasing above and below;
100-ns fall time, 10-mv overdrive
2.465
0.485
94
2.500
0.500
100
22.5
2.535
V
0.515
V
106
μA
ms
(4) All deglitch periods are a function of the timer setting and is modified in DPPM or thermal regulation modes by the percentages that the
program current is reduced.
(5) When input current remains below 2 A, the battery charging current may be raised until the thermal regulation limits the charge current.
(6) For half-charge rate, V_(SET) is 1.25 V ± 25 mV.
(7) Specification is for monitoring charge current through the ISET1 pin during voltage regulation mode, not for a reduced fast-charge level.
6
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