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SLUS810A – SEPTEMBER 2008 – REVISED DECEMBER 2008
ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range (0°
≤
T
J
≤
125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETER
Battery fast charge current range
I
CHG
Battery fast charge current
TEST CONDITIONS
V
BAT(REG)
> V
BAT
> V
LOWV
, V
IN
= 5 V CE = LO,
EN1 = LO, EN2 = HI
CE = LO, EN1= LO, EN2 = HI,
V
BAT
> V
LOWV
, V
IN
= 5 V, I
IN
max > I
CHG
, no load
on OUT pin, thermal loop and DPPM loop not
active
797
MIN
300
TYP
MAX
1500
UNIT
mA
K
ISET
/R
ISET
890
K
PRECHG
/R
ISET
70
88
0.1×I
CHG
106
0.11×I
CHG
975
A
K
ISET
I
PRECHG
K
PRECHG
Fast charge current factor
Pre-charge current
Pre-charge current factor
CE = LO, (EN1, EN2)
≠
(LO, LO),
V
BAT
> V
RCH
, t < t
MAXCH
, V
IN
= 5 V, DPPM loop
and thermal loop not active
CE = LO, (EN1, EN2) = (LO, LO),
V
BAT
> V
RCH
, t < t
MAXCH
, V
IN
= 5 V, DPPM loop
and thermal loop not active
V
IN
> V
UVLO
and V
IN
> V
BAT
+ V
IN(DT)
AΩ
A
AΩ
A
0.09×I
CHG
I
TERM
Termination comparator detection
threshold (internally set)
0.027×I
CHG
72
0.033×I
CHG
75
0.040×I
CHG
78
µA
A
A
I
BIAS(ITERM)
I
TERM
Current for external
termination-setting resistor
Termination current threshold
(externally set) (bq24074)
K
ITERM
× R
ITERM
/ R
ISET
USB500 or ISET mode(EN1, EN2)
≠
(LO, LO)
CE = LO, V
BAT
> V
RCH
, t < t
MAXCH
, V
IN
= 5 V,
DPPM loop and thermal loop not active
USB100 mode (EN1, EN2) = (LO, LO),
CE = LO, V
BAT
> V
RCH
, t < t
MAXCH
, V
IN
= 5 V,
DPPM loop and thermal loop not active
0.0225
0.0300
0.0375
K
ITERM
K Factor for termination detection
threshold (externally set) (bq24074)
0.008
0.0100
25
0.012
ms
V
BAT(REG)
–60mV
V
ms
ms
10
mA
ms
t
DGL(TERM)
V
RCH
t
DGL(RCH)
t
DGL(NO-IN)
I
BAT(DET)
t
DET
t
PRECHG
t
MAXCHG
t
PRECHG
t
MAXCHG
K
TMR
I
NTC
V
HOT
V
HYS(HOT)
V
COLD
V
HYS(COLD)
t
DGL(TS)
V
DIS(TS)
Deglitch time, termination detected
Recharge detection threshold
Deglitch time, recharge threshold
detected
Delay time, input power loss to OUT
LDO turn-off
Sink current for battery detection
Battery detection timer
V
BAT
= 3.6 V. Time measured from
V
IN
: 5 V
→
3 V 1
µs
fall-time
V
BAT
= 2.5V
BAT high or low
5
V
IN
> V
UVLO
and V
IN
> V
BAT
+ V
IN(DT)
V
BAT(REG)
–140mV
V
BAT(REG)
–100mV
62.5
20
7.5
250
BATTERY CHARGING TIMERS
Pre-charge safety timer value
Charge safety timer value
Pre-charge safety timer value
Charge safety timer value
Timer factor
(1)
TMR = floating
TMR = floating
18 kΩ < R
TMR
< 72 kΩ
18 kΩ < R
TMR
< 72 kΩ
1440
14400
1800
18000
R
TMR
× K
TMR
2160
21600
s
s
s
s
10×R
TMR
×K
TMR
36
48
60
s/kΩ
µA
mV
mV
BATTERY-PACK NTC MONITOR
NTC bias current
High temperature trip point
Hysteresis on high trip point
Low temperature trip point
Hysteresis on low trip point
Deglitch time, pack temperature fault
detection
TS function disable threshold
(bq24072, bq24073)
V
IN
> V
UVLO
and V
IN
> V
BAT
+ V
IN(DT)
Battery charging, V
TS
Falling
Battery charging, V
TS
Rising from V
HOT
Battery charging, V
TS
Rising
Battery charging, V
TS
Falling from V
COLD
TS fault detected to charger disable
TS unconnected
72
270
75
300
30
78
330
2000
2100
300
50
V
IN
- 200mV
2200
mV
mV
ms
V
THERMAL REGULATION
T
J(REG)
T
J(OFF)
T
J(OFF-HYS)
Temperature regulation limit
Thermal shutdown temperature
Thermal shutdown hysteresis
T
J
Rising
125
155
20
°C
°C
°C
(1)
These numbers set trip points of 0°C and 50°C while charging, with 3°C hysteresis on the trip points, with a Vishay Type 2 curve NTC
with an R25 of 10 kΩ.
5
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