Datasheet

bq25504
SLUSAH0A –OCTOBER 2011–REVISED SEPTEMBER 2012 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over recommended temperature range, typical values are at T
A
= 25°C. Unless otherwise noted, specifications apply for
conditions of VIN_DC = 1.2V, VBAT = VSTOR = 3V. External components L
BST
= 22 µH, C
HVR
= 4.7 µF C
STOR
= 4.7 µF.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
BATTERY MANAGEMENT
VBAT = 2.1 V; VBAT_UV = 2.3 V, T
J
= 25°C
1 5 nA
VSTOR = 0 V
I
VBAT
Leakage on VBAT pin
VBAT = 2.1 V; VBAT_UV = 2.3 V,
80 nA
–40°C < T
J
< 65°C, VSTOR = 0 V
VIN_DC = 0V;
VSTOR Quiescent current Charger Shutdown in UV
VBAT < VBAT_UV = 2.4V; 330 750 nA
Condition
VSTOR = 2.2V, No load on VBAT
I
VSTOR
VIN_DC = 0V,
VSTOR Quiescent current Charger Shutdown in OV
VBAT > VBAT_OV, VSTOR = 4.25, 570 1400 nA
Condition
No load on VBAT
Programmable voltage range for overvoltage
V
BAT_OV
VBAT increasing 2.5 5.25 V
threshold (Battery voltage is rising)
Battery voltage overvoltage hysteresis threshold
V
BAT_OV_HYST
VBAT decreasing 18 35 89 mV
(Battery voltage is falling), internal threshold
Programmable voltage range for under voltage
V
BAT_UV
VBAT decreasing; VBAT_UV > V
Bias
2.2 VBAT_OV V
threshold (Battery voltage is falling)
Battery under voltage threshold hysteresis, internal
V
BAT_UV_HYST
VBAT increasing 40 80 125 mV
thershold
Programmable voltage range for threshold voltage
V
BAT_OK
for high to low transition of digital signal indicating VBAT decreasing VBAT_UV VBAT_OV V
battery is OK,
Programmable voltage range for threshold voltage
VBAT_OV-
V
BAT_OK_HYST
for low to high transition of digital signal indicating VBAT increasing 50 mV
VBAT_UV
battery is OK,
Overall Accuracy for threshold values, UV, OV,
V
BAT_ACCURACY
Selected resistors are 0.1% tolerance –5% 5%
VBAT_OK
VSTOR-
V
BAT_OKH
VBAT OK (High) threshold voltage Load = 10 µA V
200mV
V
BAT_OKL
VBAT OK (Low) threshold voltage Load = 10 µA 100 mV
TSD_PROTL The temperature at which the boost converter is OT_Prog = LO 65 °C
disabled and the switch between VBAT and VSTOR
TSD_PROTH OT_Prog = HI 120
is disconnected to protect the battery
Voltage for OT_PROG High setting 2 V
OT_Prog
Voltage for OT_PROG Low setting 0.3 V
BIAS and MPPT CONTROL STAGE
VOC_sample Sampling period of VIN_DC open circuit voltage 16 s
VOC_Settling Sampling period of VIN_DC open circuit voltage 256 ms
VIN_Reg Regulation of VIN_DC during charging 0.5 V <V
IN
< 3 V; I
IN
(DC) = 10 mA –10% 10%
DC input voltage into VIN_DC when charger is
VIN_shutoff 40 80 130 mV
turned off
Threshold on VOC_SAMP to disable MPPT VSTOR-15
MPPT_Disable V
functionality mV
Voltage node which is used as reference for the
VBIAS VIN_DC ≥ 0.5V; VSTOR ≥ 1.8 V 1.21 1.25 1.27 V
programmable voltage thresholds
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