BQ24079 Datasheet, PDF (4/39 Pages) Texas Instruments – 1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24072, bq24073
bq24074, bq24075, bq24079
SLUS810D – SEPTEMBER 2008 – REVISED JUNE 2009................................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS
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
INPUT
UVLO
V_hys
V_IN(DT)
V_hys
t_DGL(PGOOD)
Undervoltage lock-out
Hysteresis on UVLO
Input power detection threshold
Hysteresis on V_IN(DT)
Deglitch time, input power detected status
V_IN: 0 V → 4 V
V_IN: 4 V → 0 V
Input power detected when V_IN > V_BAT + V_IN(DT)
V_BAT = 3.6 V, VIN: 3.5 V → 4 V
V_BAT = 3.6 V, V_IN: 4 V → 3.5 V
Time measured from V_IN: 0 V → 5 V 1 µs
rise-time to PGOOD = LO
3.2
3.3
3.4
V
200
300 mV
55
80
130 mV
20
mV
1.2
ms
V_OVP
V_hys
t_DGL(OVP)
t_REC
Input overvoltage protection threshold
Hysteresis on OVP
Input overvoltage blanking time (OVP fault deglitch)
Input overvoltage recovery time
V_IN: 5 V → 7 V
V_IN: 5 V → 11 V
V_IN: 7 V → 5V
V_IN: 11 V → 5 V
(’72, ’73, ’75, '79)
(’74)
(’72, ’73, ’75, '79)
(’74)
Time measured from V_IN: 11 V → 5 V with 1 µs
fall-time to PGOOD = LO
6.4
6.6
6.8
V
10.2
10.5
10.8
110
mV
175
50
µs
1.2
ms
ILIM, ISET SHORT CIRCUIT DETECTION (CHECKED DURING STARTUP)
I_SC
Current source
V_SC
QUIESCENT CURRENT
V_IN > UVLO and V_IN > V_BAT + V_IN(DT)
V_IN > UVLO and V_IN > V_BAT + V_IN(DT)
1.3
mA
520
mV
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_IN – V_OUT
V_BAT – V_OUT
V_O(REG)
OUT pin voltage regulation (bq24072)
OUT pin voltage regulation (bq24073, bq24074)
OUT pin voltage regulation (bq24075, bq24079)
I_INmax
Maximum input current
K_ILIM
I_INmax
V_IN-DPM
Maximum input current factor
Programmable input current limit range
Input voltage threshold when input current is
reduced
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
V_IN > V_OUT + V_DO(IN-OUT)
V_IN > V_OUT + V_DO(IN-OUT)
EN1 = LO, EN2 = LO
EN1 = HI, EN2 = LO
EN2 = HI, EN1 = LO
I_LIM = 500mA to 1.5A
I_LIM = 200mA to 500mA
EN2 = HI, EN1 = LO, R_ILIM = 8 kΩ to 1.1 kΩ
EN2 = LO, EN1 = X
3.3
V_BAT +
150mV
4.3
5.4
90
450
1500
1330
200
4.35
300
50
3.4
V_BAT +
225mV
4.4
5.5
95
475
K_ILIM/R_ILIM
1610
1525
4.5
475 mV
100 mV
3.5
V_BAT +
270mV
V
4.5
5.6
100
mA
500
A
1720 AΩ
1720
1500 mA
4.63
V
V_DPPM
Output voltage threshold when charging current is
reduced
(’72, ’73, ’74)
(’75, '79)
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)
V_O(SC2)
t_DGL(SC2)
t_REC(SC2)
Exit battery supplement mode
V_BAT = 3.6V, R_ILIM = 1.5kΩ, R_LOAD = 2Ω → 10Ω
Output short-circuit detection threshold, power-on
Output short-circuit detection threshold, supplement
mode V_BAT – V_OUT > V_O(SC2) indicates short-circuit
Deglitch time, supplement mode short circuit
Recovery time, supplement mode short circuit
V_IN > V_UVLO and V_IN > V_BAT + V_IN(DT)
V_IN > V_UVLO and V_IN > V_BAT + V_IN(DT)
V_OUT ≥
V_BAT–20mV
0.8
0.9
200
250
250
60
V
1
V
300 mV
µs
ms
4
Submit Documentation Feedback
Copyright © 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): bq24072 bq24073 bq24074 bq24075, bq24079