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bq24273YFFT Datasheet(PDF) 4 Page - Texas Instruments |
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bq24273YFFT Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 27 page  bq24273 SLUSB08 – JUNE 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Circuit of Figure 1, VUVLO < VIN < VOVP AND VIN>VBAT+VSLP, TJ = 0°C – 125°C and TJ = 25°C for typical values (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Deglitch time for supply rising above Rising voltage, 2-mV over drive, tRISE=100ns 30 ms VSLP+VSLP_EXIT VOVP Input supply OVP threshold voltage IN, VIN Rising, 100 mV hysteresis 10.3 10.5 10.7 V 1.025 × 1.05 × 1.075 × VBOVP Battery OVP threshold voltage VBAT threshold over VOREG to turn off charger during charge V VBATREG VBATREG VBATREG % of VBOVP hysteresis Lower limit for VBAT falling from above VBOVP 1 VBATREG VBATUVLO Battery UVLO threshold voltage 2.5 V VIN_DPM – VBAT_SOURCE Bad source detection threshold V 80mV Bad source detection deglitch 32 ms ILIMIT Cycle by cycle current limit 4.1 4.9 5.6 A TSHUTDWN Thermal shutdown 10°C Hysteresis 165 C TREG Thermal regulation threshold 120 C Safety timer accuracy –20% 20% STAT, INT IIH High-level leakage current V/CHG = V/PG = 5 V 1 µA VOL Low-level output saturation voltage IO = 10 mA, sink current 0.4 V PWM CONVERTER Internal top reverse blocking MOSFET on-resistance IIN_LIMIT = 1.5 A, Measured from VIN to PMIDU 45 80 m Ω Internal top N-channel Switching MOSFET on- Measured from PMID to SW 65 110 m Ω resistance Internal bottom N-channel MOSFET on-resistance Measured from SW to PGND 65 115 m Ω fOSC Oscillator frequency 1.35 1.50 1.65 MHz DMAX Maximum duty cycle 95% DMIN Minimum duty cycle 0 BATTERY-PACK NTC MONITOR VHOT 29.7 30 30.5 %VDRV High temperature threshold VTS falling, 1%VDRV Hysteresis VWARM 37.9 38.3 39.6 %VDRV VCOOL 56.0 56.5 56.9 %VDRV Low temperature threshold VTS rising, 1%VDRV Hysteresis VCOLD 59.5 60 60.4 %VDRV VTSOFF TS Disable threshold VTS rising, 2%VDRV Hysteresis 70 73 %VDRV tDGL(TS) Deglitch time on TS change 50 ms VIH Input high threshold VPULLUP = 1.8 V, SDA and SCL 1.3 V VIL Input low threshold VPULLUP = 1.8 V, SDA and SCL 0.4 V VOL Output low threshold ISDA = 10 mA, sink current 0.4 V IIH Input high leakage current VPULLUP = 1.8 V, SDA and SCL 1 µA tWATCHDOG Watchdog timer timeout 30 s 4 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated Product Folder Link(s) :bq24273 |
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