Datasheet

bq24072T
bq24075T, bq24079T
SLUS937A –DECEMBER 2009–REVISED APRIL 2010 www.ti.com
ELECTRICAL CHARACTERISTICS
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
INPUT
V
UVLO
Under-voltage lock-out V
IN
: 0V → 4V 3.2 3.3 3.4 V
V
HYS-
Hysteresis on UVLO V
IN
: 4V → 0V 200 300 mV
UVLO
(Input power detected if V
IN
> V
BAT
+ V
IN-DT
)
V
IN-DT
Input power detection threshold 55 80 140 mV
V
BAT
= 3.6V, V
IN
: 3.5V → 4V
V
HYS-INDT
Hysteresis on V
IN-DT
V
BAT
= 3.6V, V
IN
: 4V → 3.5V 20 mV
t
DGL(PGOO
Deglitch time, input power detected Time measured from V
IN
: 0V → 5V,
1.2 ms
D)
status 1ms rise-time to PGOOD = LO
V
OVP
Input overvoltage protection threshold VIN: 5V → 7V 6.4 6.6 6.8 V
V
HYS-OVP
Hysteresis on OVP VIN: 7V → 5V 240 mV
t
BLK(OVP)
Input over-voltage blanking time 50 ms
Time measured from V
IN
: 11V → 5V 1ms
t
REC(OVP)
Input over-voltage recovery time 1.2 ms
fall-time to PGOOD = LO
ILIM, ISET SHORT CIRCUIT TEST
I
SC
Current source 1.3 mA
V
SC
520 mV
QUIESCENT CURRENT
I
BAT(PDWN
Sleep current into BAT pin CE = LO or HI, input power not detected, no load on OUT pin 6.5 mA
)
EN1= HI, EN2=HI, V
IN
≤ 6V 50
I
IN(STDBY)
Standby current into IN pin mA
EN1= HI, EN2=HI, V
IN
> 6V 200
CE = LO, V
IN
= 6V, no load on OUT pin,
I
CC
Active supply current, IN pin 1.5 mA
V
BAT
> V
BAT(REG)
, (EN1,EN2)≠(HI,HI)
POWER PATH
V
DO(IN-
V
IN
– V
OUT
V
IN
= 4.3V, I
IN
= 1A, V
BAT
= 4.2V 300 475 mV
OUT)
V
DO(BAT-
V
BAT
– V
OUT
I
OUT
= 1A, V
IN
= 0V, V
BAT
> 3V 50 100 mV
OUT)
V
IN
> V
OUT
+ V
DO(IN-OUT)
, V
BAT
< 3.2 V 3.3 3.4 3.5
OUT pin voltage regulation (bq24072T)
V
BAT
+ V
BAT
+ V
BAT
+
V
IN
> V
OUT
+ V
DO(IN-OUT)
, V
BAT
≥ 3.2 V
V
O(REG)
150 mV 225 mV 270 mV V
OUT pin voltage regulation (bq24075T,
V
IN
> V
OUT
+ V
DO(IN-OUT)
5.4 5.5 5.6
bq24079T)
EN1 = LO, EN2 = LO 90 95 100 mA
I
IN-MAX
Maximum input current EN1 = HI, EN2 = LO 450 475 500 mA
EN2 = HI, EN1 = LO K
ILIM
/R
IL IM
A
ILIM ≥ 500mA 1500 1600 1700
K
ILIM
Maximum input current factor AΩ
200mA < ILIM < 500mA 1330 1512 1700
I
IN-MAX
Programmable input current limit range EN2 = HI, EN1 = LO, R
ILIM
= 8kΩ to 1.1kΩ 200 1500 mA
Input voltage threshold when input
V
IN-LOW
EN2 = LO, EN1 = X 4.35 4.5 4.63 V
current is reduced
V
O(REG)
V
O(REG)
V
O(REG)
bq24072T –100
Output voltage threshold when charging
–180 mV –30 mV
V
DPPM
V
mV
current is reduced
bq24075T, bq24079T 4.2 4.3 4.4
V
BAT
–
V
BSUP1
Enter battery supplement mode VOUT falling, Supplement mode entered when V
OUT
< V
BSUP1
V
40mV
V
BAT
–
V
BSUP2
Exit battery supplement mode VOUT rising, Supplement mode exited when V
OUT
> V
BSUP2
V
20mV
Output short-circuit detection threshold,
V
O(SC1)
0.8 0.9 1.0 V
power-on
Output short-circuit detection threshold,
V
O(SC2)
supplement mode V
BAT
– V
OUT
> V
O(SC2)
200 250 300 mV
indicates short-circuit
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