BQ24072 Datasheet, PDF (4/38 Pages) Texas Instruments – 1.2A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24072, bq24073
bq24074, bq24075
SLUS810A – SEPTEMBER 2008 – REVISED DECEMBER 2008...................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range (0° ≤ T_J ≤ 125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
QUIESCENT CURRENT
I_BAT(PDWN)
Sleep current into BAT pin
I_IN
Standby current into IN pin
I_CC
Active supply current, IN pin
POWER PATH
CE = LO or HI, input power not detected, No
load on OUT pin,
T_J = 85°C
EN1= HI, EN2=HI, V_IN = 6 V, T_J= 85°C
EN1= HI, EN2=HI, V_IN = 10 V, T_J= 85°C
CE = LO, V_IN = 6 V, no load on OUT pin,
V_BAT > V_BAT(REG), (EN1, EN2) ≠ (HI, HI)
6.5 µA
50 µA
200
1.5 mA
V_DO(IN-OUT)
V_DO(BAT-OUT)
V_O(REG)
V_IN – V_OUT
V_BAT – V_OUT
OUT pin voltage regulation (bq24072)
V_IN = 4.3 V, I_IN = 1A, V_BAT = 4.2V
I_OUT = 1 A, V_IN = 0 V, V_BAT > 3 V
V_IN > V_OUT + V_DO(IN-OUT), V_BAT < 3.2 V
V_IN > V_OUT + V_DO(IN-OUT), V_BAT ≥ 3.2 V
OUT pin voltage regulation (bq24073,
bq24074)
V_IN > V_OUT + V_DO(IN-OUT)
3.3
V_BAT +
150mV
4.3
300
50
3.4
V_BAT +
225mV
4.4
475 mV
100 mV
3.5
V_BAT +
275mV
V
4.5
I_INmax
K_ILIM
I_INmax
OUT pin voltage regulation (bq24075) V_IN > V_OUT + V_DO(IN-OUT)
EN1 = LO, EN2 = LO
Maximum input current
EN1 = HI, EN2 = LO
EN2 = HI, EN1 = LO
Maximum input current factor
Programmable input current limit
range
I_LIM ≥ 500mA
200mA < I_LIM < 500mA
EN2 = HI, EN1 = LO, R_ILIM = 8 kΩ to 1.1 kΩ
5.4
90
450
1480
1320
200
5.5
95
475
K_ILIM/R_ILIM
1550
1470
5.6
100
mA
500
A
1620 AΩ
1620
1500 mA
V_IN-DPM
Input voltage threshold when input
current is reduced
EN2 = LO, EN1 = X
4.35
4.5
4.63 V
V_DPPM
Output voltage threshold when
charging current is reduced
(’72, ’73, ’74)
(’75)
V_O(REG) –
180mV
V_O(REG) –
100mV
V_O(REG) –
30mV
V
4.2
4.3
4.4 V
V_BSUP1
Enter battery supplement mode
V_BAT = 3.6V, R_ILIM = 1.5kΩ, R_LOAD = 10Ω → 2Ω
V_OUT ≤ V_BAT
–40mV
V
V_BSUP2
V_O(SC1)
Exit battery supplement mode
Output short-circuit detection
threshold, power-on
V_BAT = 3.6V, R_ILIM = 1.5kΩ, R_LOAD = 2Ω → 10Ω
V_IN > V_UVLO and V_IN > V_BAT + V_IN(DT)
V_OUT ≥
V_BAT–20mV
0.8
0.9
V
1V
V_O(SC2)
t_DGL(SC2)
Output short-circuit detection
threshold, supplement mode V_BAT –
V_OUT > V_O(SC2) indicates short-circuit
Deglitch time, supplement mode short
circuit
V_IN > V_UVLO and V_IN > V_BAT + V_IN(DT)
200
250
300 mV
250
µs
t_REC(SC2)
Recovery time, supplement mode
short circuit
60
ms
BATTERY CHARGER
I_BAT
Source current for BAT pin
short-circuit detection
V_BAT = 1.5V
4
7.5
11 mA
V_BAT(SC)
BAT pin short-circuit detection
threshold
V_BAT rising
1.6
1.8
2.0 V
V_BAT(REG)
V_LOWV
Battery charge voltage
Pre-charge to fast-charge transition
threshold
V_IN > V_UVLO and V_IN > V_BAT + V_IN(DT)
4.16
4.20
4.24 V
2.9
3
3.1 V
t_DGL1(LOWV)
Deglitch time on pre-charge to
fast-charge transition
25
ms
t_DGL2(LOWV)
Deglitch time on fast-charge to
pre-charge transition
25
ms
4
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