BQ25505 Datasheet, PDF (4/34 Pages) Texas Instruments – Ultra Low Power Boost Charger with Battery Management and Autonomous Power

bq25505
SLUSBJ3B – AUGUST 2013 – REVISED JANUARY 2014
www.ti.com
ABSOLUTE MAXIMUM RATINGS⁽¹⁾
over operating free-air temperature range (unless otherwise noted)
VALUE
MIN
MAX
UNIT
Input voltage
VIN_DC, VOC_SAMP, VREF_SAMP, VBAT_OV, VB_PRI_ON,
VB_SEC_ON, VBAT_PRI, VBAT_SEC, VRDIV, OK_HYST, OK_PROG,
VBAT_OK, VSTOR, LBST⁽²⁾
–0.3
5.5
V
Peak Input Power, PIN_PK
510
mW
Operating junction temperature range, T_J
Storage temperature range, T_STG
–40
125
°C
–65
150
°C
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to V_SS/ground terminal.
THERMAL INFORMATION
THERMAL METRIC⁽¹⁾⁽²⁾
θ_JA
θ_JCtop
θ_JB
ψ_JT
ψ_JB
θ_JCbot
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
bq25505
RGR (20 PINS)
34.6
49.0
12.5
0.5
12.6
1.0
UNITS
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) For thermal estimates of this device based on PCB copper area, see the TI PCB Thermal Calculator.
spacing
RECOMMENDED OPERATING CONDITIONS
VIN(DC)
VBAT_SEC,
VBAT_PRI
CIN
CSTOR
CBAT
CREF
R_OC1 + R_OC2
R_{OK 1} + R_{OK 2} + R_OK3
R_OV1 + R_OV2
L1
T_A
T_J
DC input voltage into VIN_DC⁽¹⁾
Battery voltage range⁽²⁾
Input capacitance
Storage capacitance
Battery pin capacitance or equivalent battery capacity
Sampled reference storage capacitance
Total resistance for setting for MPPT reference.
Total resistance for setting the VBAT_OK threshold voltage.
Total resistance for setting VBAT_OV threshold voltage.
Input inductance
Operating free air ambient temperature
Operating junction temperature
(1) Maximum input power ≤ 400 mW. Cold start has been completed
(2) VBAT_OV setting must be higher than VIN_DC
MIN NOM
0.1
2
MAX
5.1
5.5
UNIT
V
V
4.7
µF
4.7
µF
100
µF
9
10
11 nF
18
20
22 MΩ
11
13
15 MΩ
11
13
15 MΩ
22
µH
–40
85 °C
–40
105 °C
4
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