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BQ24382 Datasheet, PDF (3/18 Pages) Texas Instruments – Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode
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bq24380
bq24381
bq24382
www.ti.com......................................................................................................................................................... SLUS805B – APRIL 2008 – REVISED MARCH 2009
ELECTRICAL CHARACTERISTICS
Over junction temperature range -40°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX
IN
UVLO
Undervoltage lock-out, input power
detected threshold
CE = LO or HI, VIN: 0 V → 3 V
2.5
2.8
Vhys(UVLO)
tDGL(PGOOD)
Hysteresis on UVLO
Deglitch time, input power detected status
IDD
Operating current
CE = LO or HI, VIN: 3 V → 0 V
CE = LO or HI. Time measured from
VIN 0 V → 5 V 1-µs rise-time
CE = LO, no load on OUT pin,
VIN = 5 V
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bq24381
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200
300
8
250
300
300
ISTDBY
Standby current
CE = HI, VIN = 5.5 V
100
INPUT-TO-OUTPUT CHARACTERISTICS
VDO
Dropout voltage IN to OUT
CE = LO, VIN = 5 V, I(OUT) = 1 A
280
IOFF
Q1 off-state leakage current
CE = HI, VIN = 5.5 V
10
INPUT OVERVOLTAGE PROTECTION
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5.3 5.5
5.7
VO(REG)
Output voltage
CE = LO, VIN = 6 V
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4.8
5
5.2
4.8
5
5.2
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6.1 6.3
6.5
VOVP
Input overvoltage protection threshold
CE = LO, VIN: 5 V → 8 V
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bq24382
6.88 7.1
10.17 10.5
7.31
10.83
Vhys(OVP)
Hysteresis on OVP
tPD(OVP) (1)
Input OV propagation delay
tREC(OVP)
Recovery time from input overvoltage condition
OUTPUT SHORT-CIRCUIT PROTECTION (only at start-up)
CE = LO or HI, VIN: 7 V → 5 V
CE = LO or HI, VIN: 8 V → 5 V
VIN: 5 V → 10 V
CE = LO. Time measured from
VIN: 7 V → 5 V, 1-µs fall-time
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25
110
25
120
150
300
200
8
IO(SC)
Short-circuit detection threshold
tREC(SC)
Retry interval if short-circuit detected
BATTERY OVERVOLTAGE PROTECTION
3 V < VIN < VOVP - Vhys(OVP)
1.3 1.5
1.7
64
BVOVP
Vhys(BVovp)
I(VBAT)
tDGL(BVovp)
Battery overvoltage protection threshold
Hysteresis on BV(OVP)
Input bias current on VBAT pin
Deglitch time, battery overvoltage detected
VIN > 4.5 V, CE = LO
VIN > 4.5 V, CE = LO
TJ = 25°C
VIN > 4.5 V, CE = LO, Time measured from
VVSAT rising from 4.1 V to 4.4 V to FAULT
going low.
4.3 4.35
4.4
200
320
10
176
THERMAL PROTECTION
TJ(OFF)
Thermal shutdown temperature
TJ(OFF-HYS)
Thermal shutdown hysteresis
LOGIC LEVELS ON CE
140
150
20
VIL
Logic LOW input voltage
VIH
Logic HIGH input voltage
IIL
IIH
LOGIC LEVELS ON FAULT
VCE = 1.8 V
0
0.4
1.4
1
15
VOL
Output LOW voltage
ISINK = 5 mA
0.2
Ilkg
Off-state leakage current, HI-Z
VFAULT = 5 V
10
(1) Not tested. Specified by design
UNIT
V
mV
ms
µA
µA
mV
µA
V
V
mV
ns
ms
A
ms
V
mV
nA
µs
°C
°C
V
V
µA
µA
V
µA
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