BQ24747 Datasheet, PDF (5/36 Pages) Texas Instruments – SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Comparator and Charge Enable Pin

bq24747
www.ti.com ............................................................................................................................................................................................. SLUS988 – OCTOBER 2009
TERMINAL
NO.
26 ICOUT
27 CSSN
28 CSSP
Table 1. TERMINAL FUNCTIONS – 28-PIN QFN (continued)
FUNCTION
Input current comparator active-high open-drain logic output. Place a 10 kΩ pull-up resistor from ICOUT pin to the
pull-up voltage rail. Place a positive feedback resistor from ICOUT pin to ICREF pin for programming hysteresis. The
output is HI when VICM pin voltage is lower than ICREF pin voltage. The output is LO when VICM pin voltage is
higher than ICREF pin voltage.
Adapter current-sense resistor, negative input. An optional 0.1-μF ceramic capacitor is placed from CSSN pin to GND
for common-mode filtering. An optional 0.1-μF ceramic capacitor is placed from CSSN to CSSP to provide
differential-mode filtering.
Adapter current-sense resistor, positive input. An optional 0.1-μF ceramic capacitor is placed from CSSP pin to GND
for common-mode filtering. An optional 0.1-μF ceramic capacitor is placed from CSSN to CSSP to provide
differential-mode filtering.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)^{(1) (2)}
DCIN, CSOP, CSON, CSSP, CSSN, VFB, ACOK
PHASE
EAI, EAO, FBO, VDDP, LGATE, ACIN, VICM, ICOUT, ICREF, CE, SDA, SCL
Voltage range VDDSMB
VREF
BOOT, UGATE with respect to GND and PGND
GND, PGND
Maximum difference voltage: CSOP–CSON, CSSP–CSSN
Junction temperature range
Storage temperature range
VALUE
–0.3 to 30
–1 to 30
–0.3 to 7
–0.3 to 5.5
–0.3 to 3.6
–0.3 to 36
–1 to 1
–0.5 to 0.5
–40 to 155
–55 to 155
UNIT
V
°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 voltages are with respect to GND if not specified. Currents are positive into, and negative out of the specified terminal. Consult
Packaging Section of the data book for thermal limitations and considerations of packages.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
PHASE
DCIN, CSOP, CSON, CSSP, CSSN, VFB, ACOK
VDDP, LGATE
Voltage range VREF
EAI, EAO, FBO, ACIN, VICM, ICOUT, ICREF, CE, VDDSMB, SDA, SCL
BOOT, UGATE with respect to GND and PGND
GND, PGND
Maximum difference voltage: CSOP–CSON, CSSP–CSSN
Junction temperature range
Storage temperature range
MIN NOM MAX UNIT
–0.7
24
0
24
0
6.5
3.3
V
0
5.5
0
30
–0.3
0.3
–0.3
0.3
–40
125
°C
–55
150
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