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SLUS937A – DECEMBER 2009 – REVISED APRIL 2010
ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range (0°C < T
J
< 125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETER
t
DGL(SC2)
t
REC(SC2)
Deglitch time, supplement mode short
circuit
Recovery time, supplement mode short
circuit
TEST CONDITIONS
MIN
TYP
250
60
MAX
UNIT
ms
ms
BATTERY CHARGER
I
BAT(SC)
V
BAT(SC)
V
BAT(REG)
V
LOWV
t
DGL1(LOW
V)
Source current for BAT pin short-circuit
detection
BAT pin short-circuit detection threshold
Battery charge voltage
Pre-charge to fast-charge transition
threshold
Deglitch time on pre-charge to
fast-charge transition
Deglitch time on fast-charge to
pre-charge transition
Battery fast charge current range
V
BAT(REG)
> V
BAT
> V
LOWV
, V
IN
= 5V, CE = LO, EN1= LO, EN2 =
HI
CE = LO, EN1= LO, EN2 = HI, V
BAT
> V
LOWV
,
V
IN
= 5V, I
IN-MAX
> I
CHG
, no load on OUT pin, thermal loop not
active, DPM loop not active
bq24072T, bq24075T
bq24079T
4
1.6
4.16
4.059
2.9
7.5
1.8
4.20
4.100
3
25
25
11
2.0
4.24
4.141
3.1
mA
V
V
V
ms
ms
t
DGL2(LOW
V)
I
CHG
I
CHG
K
ISET
I
PRECHG
k
PRECHG
300
1500
mA
Battery fast charge current
Fast charge current factor
Pre-charge current
Pre-charge current factor
K
ISET
/R
ISET
797
890
975
A
AΩ
A
106
0.11×I
CH
G
K
PRECHG
/R
ISET
70
CE = LO, (EN1,EN2)≠(LO,LO),
V
BAT
> V
RCH
, t < t
MAXCH
, V
IN
= 5V, DPM loop not active, thermal
loop not active
CE = LO, (EN1,EN2)=(LO,LO),
V
BAT
> V
RCH
, t < t
MAXCH
, V
IN
= 5V, DPM loop not active, thermal
loop not active
0.09×I
CH
G
88
0.1×I
CH
G
I
TERM
Charge current value for termination
detection threshold
0.027×I
C
HG
.033×I
C
HG
0.040×I
C
HG
t
DGL(TERM
)
Deglitch time, termination detected
V
O(REG)
–140mV
25
V
O(REG)
–100m
V
62.5
VBAT = 3.6V. Time measured from V
IN
:
5V
→
3.3V 1ms fall-time
5
20
7.5
250
10
V
O(REG)
–60mV
ms
V
RCH
t
DGL(RCH)
t
DGL(NO-
IN)
Recharge detection threshold
Deglitch time, recharge threshold
detected
Delay time, input power loss to charger
turn-off
Sink current for battery detection
Battery detection timer
V
ms
ms
mA
ms
I
BAT(DET)
t
DET
t
PRECHG
t
MAXCH
t
PRECHG
t
MAXCH
K
TMR
BATTERY CHARGING TIMERS
Pre-charge safety timer value
Charge safety timer value
Pre-charge safety timer value(externally
set)
Charge safety timer value (externally
set)
Timer factor
TMR = floating
TMR = floating
18kΩ < RTMR < 72kΩ
18kΩ < RTMR < 72kΩ
1440
14400
1800
18000
2160
21600
s
s
s
s
55 s / kΩ
R
TMR
x K
TMR
10 x R
TMR
x K
TMR
35
45
BATTERY – PACK NTC MONITOR
V
HOT
High temperature trip point
Battery charging
Battery charging
Battery charging
Battery charging
24.5
12
12.5
1
25
1
25.5
13
% of
V
IN
% of
V
IN
% of
V
IN
% of
V
IN
V
HYS(HOT)
Hysteresis on high trip point
V
COLD
V
HYS(COL
D)
Low temperature trip point
Hysteresis on low trip point
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