BQ25570_14 Datasheet, PDF (4/41 Pages) Texas Instruments – Ultra Low Power Harvester Power Management IC with Boost Charger, and Nano-Powered Buck Converter

bq25570
SLUSBH2C – MARCH 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, VRDIV, OK_HYST,
OK_PROG, VBAT_OK, VBAT, VSTOR, LBOOST, EN, VOUT_EN,
VOUT_SET, LBUCK, VOUT⁽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
bq25570
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, VOUT
CIN
CSTOR
COUT
CBAT
CREF
R_OC1 + R_OC2
R_{OK 1} + R_{OK 2} + R_OK3
R_OUT1 + R_OUT2
R_OV1 + R_OV2
L1
L2
T_A
T_J
DC input voltage into VIN_DC⁽¹⁾
Voltage range⁽²⁾
Capacitance on VIN_DC pin
Capacitance on VSTOR pin
Capacitance on VOUT pin
Capacitance or battery with at least the same equivalent capacitance on
VBAT pin
Capacitance on VREF_SAMP that stores the samped VIN reference
Total resistance for setting for MPPT reference if needed
Total resistance for setting VBAT_OK threshold voltage.
Total resistance for setting VOUT threshold voltage.
Total resistance for setting VBAT_OV voltage.
Inductance on LBOOST pin
Inductance on LBUCK pin
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
4.7
4.7
10
22
100
9
10
18
20
11
13
11
13
11
13
22
4.7
10
–40
–40
MAX
5.1
5.5
11
22
15
15
15
85
105
UNIT
V
V
µF
µF
µF
µF
nF
MΩ
MΩ
MΩ
MΩ
µH
µH
°C
°C
4
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