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SLUS810D – SEPTEMBER 2008 – REVISED JUNE 2009
ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range (0°
≤
T
J
≤
125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETER
BATTERY CHARGER
I
BAT
V
BAT(SC)
V
BAT(REG)
V
LOWV
t
DGL1(LOWV)
t
DGL2(LOWV)
Source current for BAT pin short-circuit detection
BAT pin short-circuit detection threshold
Battery charge voltage
('79)
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
I
CHG
Battery fast charge current
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)
70
0.09×I
CHG
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
300
V
IN
> V
UVLO
and V
IN
> V
BAT
+ V
IN(DT)
4.059
2.9
4.100
3
25
25
1500
4.141
3.1
V
ms
ms
mA
V
BAT
= 1.5V
V
BAT
rising
('72, '73, '74, '75)
4
1.6
4.16
7.5
1.8
4.20
11
2
4.23
mA
V
V
TEST CONDITIONS
MIN
TYP
MAX
UNIT
K
ISET
/R
ISET
890
K
PRECHG
/R
ISET
88
0.1×I
CHG
106
0.11×I
CHG
975
A
AΩ
A
AΩ
A
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
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
t
PRECHG
t
MAXCHG
t
PRECHG
t
MAXCHG
K
TMR
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
10×R
TMR
×K
TMR
2160
21600
s
s
s
s
36
48
60
s/kΩ
BATTERY-PACK NTC MONITOR
I
NTC
V
HOT
V
HYS(HOT)
V
COLD
V
HYS(COLD)
t
DGL(TS)
V
DIS(TS)
NTC bias current
V
IN
> 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
µA
mV
mV
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)
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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