Datasheet

bq24707
bq24707A
www.ti.com SLUSA78B –JULY 2010– REVISED MARCH 2011
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
INPUT UNDERVOLTAGE LOCK-OUT COMPARATOR (UVLO)
V
UVLO
Input under voltage rising threshold V
VCC
rising 3.5 3.75 4 V
V
UVLO_HYS
Input under voltage falling hysteresis V
VCC
falling 340 mV
FAST DPM COMPARATOR (FAST_DPM)
Fast DPM comparator stop charging rising threshold 108%
V
FAST_DPM
with respect to input current limit, voltage across input
sense resistor rising edge (specified by design)
QUIESCENT CURRENT
Total battery leakage current to I
SRN
+ I
SRP
+I
PHASE
+
I
BAT
V
VCC
< V
BAT
= 16.8V, T
J
= 0 to 85°C 15 µA
I
VCC
+ I
ACP
+ I
ACN
V
VCC
> V
UVLO
, V
ACDET
> 0.6V, charge disabled,
I
STANDBY
Standby quiescent current, I
VCC
+ I
ACP
+ I
ACN
0.5 1 mA
T
J
= 0 to 85°C
Adapter bias current during charge, V
VCC
> V
UVLO
, V
ACDET
> 2.4V,
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
> V
UVLO
, V
ACDET
> 2.4V,
I
AC_SW
10 mA
I
VCC
+ I
ACP
+ I
ACN
charge enabled, switching, MOSFET Sis412DN
ACOK COMPARATOR
V
ACOK_FALL
ACOK falling threshold V
VCC
>V
UVLO
, V
ACDET
rising 2.376 2.4 2.424 V
V
ACOK_RISE_HYS
ACOK rising hysteresis V
VCC
>V
UVLO
, V
ACDET
falling 35 55 75 mV
V
VCC
>V
UVLO
, V
ACDET
rising above 2.4V,
0.9 1.3 1.7 s
ChargeOption() bit [15] = 0 (default), (bq24707 only)
V
VCC
>V
UVLO
, V
ACDET
rising above 2.4V,
t
ACOK_FALL_DEG
ACOK falling deglitch (specified by design) 0.8 1.2 2 ms
ChargeOption() bit [15] = 0 (default), (bq24707A only)
V
VCC
>V
UVLO
, V
ACDET
rising above 2.4V, 10 50
μs
ChargeOption() bit [15] = 1
V
WAKEUP_RISE
WAKEUP detect rising threshold V
VCC
>V
UVLO
, V
ACDET
rising 0.57 0.8 V
V
WAKEUP_FALL
WAKEUP detect falling threshold V
VCC
>V
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
70 120 170 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-CURRENT COMPARATOR (ACOC)
(1)
ChargeOption() bit [2:1] = 01 120% 133% 145%
Adapter over current rising threshold with respect to
V
ACOC
input current limit, voltage across input sense resistor ChargeOption() bit [2:1] = 10 (default) 150% 166% 180%
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)
t
ACOC_DEG
ACOC deglitch time (specified by design) Voltage across input sense resistor rising to disable charge 1.7 2.5 3.3 ms
BAT OVER-VOLTAGE COMPARATOR (BAT_OVP)
V
OVP_RISE
Over voltage rising threshold as percentage of V
SRN
rising 103% 104% 106%
V
BAT_REG
V
OVP_FALL
Over voltage falling threshold as percentage of V
SRN
falling 102%
V
BAT_REG
CHARGE OVERCURRENT COMPARATOR (CHG_OCP)
ChargeCurrent() = 0x0xxxH 54 60 66 mV
Charge over current rising threshold, measure voltage
V
OCP_RISE
ChargeCurrent() = 0x1000H – 0x17C0H 80 90 100 mV
drop across current sensing resistor
ChargeCurrent() = 0x1800 H– 0x1FC0H 110 120 130 mV
(1) User can adjust threshold via SMBus ChargeOption() REG0x12.
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