Datasheet
Not Recommended for New Designs
bq24725
SLUS702A –JULY 2010–REVISED NOVEMBER 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
4.5 V ≤ V
VCC
≤ 24 V, 0°C ≤ T
J
≤ 125°C, typical values are at T
A
= 25°C, with respect to GND (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
QUIESCENT CURRENT
Battery BATFET OFF STATE Current,
V
VBAT
= 16.8V, VCC disconnect from battery, BATFET
I
BAT_BATFET_OFF
BATFET off, I
SRP
+ I
SRN
+ I
PHASE
+ I
ACP
+ 5 µA
charge pump off, BATFET turns off, T
J
= 0 to 85°C
I
ACN
Battery BATFET ON STATE Current,
V
VBAT
= 16.8V, VCC connect from battery, BATFET
I
BAT_BATFET_ON
BATFET on, I
SRP
+ I
SRN
+ I
PHASE
+ I
VCC
+ 20 µA
charge pump on, BATFET turns on, T
J
= 0 to 85°C
I
ACP
+ I
ACN
Standby quiescent current, I
VCC
+ I
ACP
+ V
VCC
> UVLO, V
ACDET
> 0.6V, charge disabled,
I
STANDBY
0.5 1 mA
I
ACN
T
J
= 0 to 85°C
Adapter bias current during charge, V
VCC
> UVLO, 2.4V < V
ACDET
< 3.15V,
I
AC_NOSW
1.5 3 mA
I
VCC
+ I
ACP
+ I
ACN
charge enabled, no switching, T
J
= 0 to 85°C
Adapter bias current during charge, V
VCC
> UVLO, 2.4V < V
ACDET
< 3.15V,
I
AC_SW
10 mA
I
VCC
+ I
ACP
+ I
ACN
charge enabled, switching, MOSFET Sis412DN
ACOK COMPARATOR
V
ACOK_RISE
ACOK rising threshold V
VCC
> UVLO, V
ACDET
rising 2.376 2.4 2.424 V
V
ACOK_FALL_HYS
ACOK falling hysteresis V
VCC
> UVLO, V
ACDET
falling 35 55 75 mV
V
VCC
> UVLO, V
ACDET
rising above 2.4V,
100 150 200 ms
First time OR ChargeOption() bit [15] = 0 (Default)
V
ACOK_RISE_DEG
ACOK rising deglitch (Specified by design)
V
VCC
> UVLO, V
ACDET
rising above 2.4V,
0.9 1.3 1.7 s
(NOT First time) AND ChargeOption() bit [15] = 1
V
WAKEUP_RISE
WAKEUP detect rising threshold V
VCC
> UVLO, V
ACDET
rising 0.57 0.8 V
V
WAKEUP_FALL
WAKEUP detect falling threshold V
VCC
> UVLO, V
ACDET
falling 0.3 0.51 V
VCC to SRN COMPARATOR (VCC_SRN)
V
VCC-SRN_FALL
VCC-SRN falling threshold V
VCC
falling towards V
SRN
70 125 180 mV
V
VCC-SRN _RHYS
VCC-SRN rising hysteresis V
VCC
rising above V
SRN
100 150 200 mV
ACN to SRN COMPARATOR (ACN_SRN)
V
ACN-SRN_FALL
ACN to BAT falling threshold V
ACN
falling towards V
SRN
120 200 280 mV
V
ACN-SRN_RHYS
ACN to BAT rising hysteresis V
ACN
rising above V
SRN
40 80 120 mV
HIGH SIDE IFAULT COMPARATOR (IFAULT_HI)
(1)
ChargeOption() bit [8:7] = 00 200 300 450
ChargeOption() bit [8:7] = 01 330 500 700
V
IFAULT_HI_RISE
ACP to PHASE rising threshold mV
ChargeOption() bit [8:7] = 10 (Default) 450 700 1000
ChargeOption() bit [8:7] = 11 600 900 1250
LOW SIDE IFAULT COMPARATOR (IFAULT_LOW)
V
IFAULT_LOW_RISE
PHASE to GND rising threshold 40 110 160 mV
INPUT OVER VOLTAGE COMPARATOR (ACOV)
V
ACOV
ACDET over voltage rising threshold V
ACDET
rising 3.05 3.15 3.25 V
V
ACOV_HYS
ACDET over voltage falling hysteresis V
ACDET
falling 50 75 100 mV
INPUT OVER CURRENT COMPARATOR (ACOC)
(1)
ChargeOption() bit [2:1] = 01 120% 133% 145%
Adapter over current rising threshold with
V
ACOC
respect to input current limit, voltage ChargeOption() bit [2:1] = 10 (Default) 150% 166% 180%
across input sense resistor rising edge
ChargeOption() bit [2:1] = 11 200% 222% 240%
ChargeOption() Bit [2:1] = 01 (133%),
V
ACOC_min
Min ACOC threshold clamp voltage 40 45 50 mV
InputCurrent () = 0x0400H (10.24mV)
ChargeOption() Bit [2:1] = 11 (222%),
V
ACOC_max
Max ACOC threshold clamp voltage 140 150 160 mV
InputCurrent () = 0x1F80H (80.64mV)
Voltage across input sense resistor rising to disable
t
ACOC_DEG
ACOC deglitch time (Specified by design) 1.7 2.5 3.3 ms
charge
BAT OVER VOLTAGE COMPARATOR (BAT_OVP)
V
OVP_RISE
Over voltage rising threshold as V
SRN
rising 103% 104% 106%
percentage of V
BAT_REG
V
OVP_FALL
Over voltage falling threshold as V
SRN
falling 102%
percentage of V
BAT_REG
(1) User can adjust threshold via SMBus ChargeOption() REG0x12.
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