BQ24257 Datasheet, PDF (4/45 Pages) Texas Instruments – 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Integrated Current Sense Resistor

bq24257
bq24258
SLUSBG0B – FEBRUARY 2013 – REVISED JULY 2013
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ABSOLUTE MAXIMUM RATINGS⁽¹⁾
over operating free-air temperature range (unless otherwise noted)
IN
Pin voltage range (with respect ^SW
to PGND)
PMID, BOOT
CSIN, BAT, DPB, LDO, SCL, SDA, STAT, D+, D–, CE, ISET, ILIM, VDPM
BOOT relative to SW
Output Current (Continuous)
IN
CSIN, BAT
Output Sink Current
STAT
Operating free-air temperature range
Junction temperature, TJ
Storage temperature, TSTG
Lead temperature (soldering, 10 s)
ESD Rating human body model⁽²⁾
MIN MAX UNIT
–1.3
20 V
–0.7
12 V
–0.3
20 V
–0.3
7V
–0.3
5V
2A
4A
5 mA
–40
85 °C
–40
125 °C
–65
150 °C
300 °C
2 kV
(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) The human body model is a 100-pF capacitor discharged through a 1.5-kΩ resistor into each pin.
RECOMMENDED OPERATING CONDITIONS
All voltages are with respect to PGND if not specified. Currents are positive into, negative out of the specified pin. Consult
Packaging Section of the data book for thermal limitations and considerations of packages.
IN voltage range
MIN
4.35
MAX UNITS
18 ⁽¹⁾
V_IN
IN operating voltage range (bq24258)
IN operating voltage range (bq24257)
4.35 10.5 V
4.35
6.5
I_IN
I_CHG
I_DISCHG
R_ISET
R_ILIM
T_J
Input current
Current in charge mode, BAT
Current in discharge mode, BAT
Charge current programming resistor range
Input current limit programming resistor range
Operating junction temperature range, T_J
2A
2A
4A
75
Ω
105
Ω
0
125 ºC
(1) The inherent switching noise voltage spikes should not exceed the absolute maximum rating on either the BOOT or SW pins. A tight
layout minimizes switching noise.
THERMAL INFORMATION
THERMAL METRIC⁽¹⁾
bq24257
YFF
bq24258
RGE
UNITS
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
76.5
32.9
0.2
32.8
44
10.6
°C/W
1.6
0.3
43.4
10.7
N/A
2.3
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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