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bq24278YFFT Datasheet(PDF) 5 Page - Texas Instruments |
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bq24278YFFT Datasheet(HTML) 5 Page - Texas Instruments |
5 / 29 page bq24278 www.ti.com SLUSB04 – JUNE 2012 ELECTRICAL CHARACTERISTICS (continued) Circuit of Figure 2, 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 UNIT PWM CONVERTER Internal top reverse blocking MOSFET on-resistance IIN_LIMIT = 500 mA, Measured from VIN to PMIDU 95 175 m Ω Internal top N-channel Switching MOSFET on-resistance Measured from PMIDU to SW 100 175 m Ω 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 High temperature threshold VTS falling 29.7 30 30.5 VHYS(HOT) Hysteresis on high threshold VTS rising 1 VCOLD Low temperature threshold VTS rising 59.5 60 60.4 VWARM Warm temperature threshold VTS falling 37.9 38.3 39.6 VHYS(WARM) Hysteresis on warm threshold VTS rising 1 %VDRV VCOOL Cool temperature threshold VTS rising 56.0 56.5 56.9 VHYS(COOL) Hysteresis on cool threshold VTS falling 1 VHYS(COLD) Hysteresis on low threshold VTS falling 1 TSOFF TS Disable threshold VTS rising, 2% VDRV Hysteresis 70 73 tDGL(TS) Deglitch time on TS change 50 ms Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s) :bq24278 |
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