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BQ24750RHDT Datasheet(PDF) 9 Page - Texas Instruments |
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BQ24750RHDT Datasheet(HTML) 9 Page - Texas Instruments |
9 / 38 page www.ti.com bq24750 SLUS735 – DECEMBER 2006 ELECTRICAL CHARACTERISTICS (continued) 7.0 V ≤ V PVCC≤ 24 V, 0°C < TJ < +125°C, typical values are at TA = 25°C, with respect to AGND (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT OVERVOLTAGE COMPARATOR (ACOV) VACOV AC Over-voltage rising threshold on Measured on ACDET 3.007 3.1 3.193 V ACDET (See ACDET in Terminal Functions) VACOV_HYS AC Over-voltage rising deglitch 1.3 ms AC Over-voltage falling deglitch 1.3 THERMAL SHUTDOWN COMPARATOR TSHUT Thermal shutdown rising temperature Temperature Increasing 155 °C TSHUT_HYS Thermal shutdown hysteresis, falling 20 °C THERMISTER COMPARATOR (TS) VLTF Cold temperature rising threshold As percentage to VVREF 72.5 73.8 74.2 VLTF_HYS Rising hysteresis As percentage to VVREF 0.5 1 1.5 % VTCO Cut-off temperature rising threshold As percentage to VVREF 28.7 29.3 29.9 VHTF Hot temperature rising threshold As percentage to VVREF 33.7 34.4 35.1 Deglitch time for temperature out of VTS > VLTF, or VTS < VTCO, or 10 range detection VTS < VHTF ms Deglitch time for temperature in valid VTS > VLTF– VLTF_HYS or VTS > VTCO, 10 range detection or VTS > VHTF BATTERY SWITCH (BATDRV) DRIVER RDS_BAT_OFF BATFET Turn-off resistance VPVCC > 5 V 160 Ω RDS_BAT_ON BATFET Turn-on resistance VPVCC > 5 V 3 k Ω VBATDRV_REG BATFET drive voltage VBATDRV_REG = VPVCC– VBATDRV when 6.5 V VPVCC > 5 V and BATFET is on BATFET Power-up delay Delay to turn off BATFET after adapter is 518 700 908 ms detected (after ACDET > 2.4) AC SWITCH (ACDRV) DRIVER RDS_AC_OFF ACFET turn-off resistance VPVCC > 5 V 80 Ω RDS_AC_ON ACFET turn-on resistance VPVCC > 5 V 2.5 k Ω VACDRV_REG ACFET drive voltage VACDRV_REG = VPVCC– VACDRV when 6.5 V VPVCC > 5 V and ACFET is on ACFET Power-up Delay Delay to turn on ACFET after adapter is 518 700 908 ms detected (after ACDET > 2.4) AC / BAT MOSFET DRIVERS TIMING Driver dead time Dead time when switching between 10 µs ACDRV and BATDRV PWM HIGH SIDE DRIVER (HIDRV) RDS_HI_ON High side driver (HSD) turn-on VBTST– VPH = 5.5 V, tested at 100 mA 3 6 Ω resistance RDS_HI_OFF High side driver turn-off resistance VBTST– VPH = 5.5 V, tested at 100 mA 0.7 1.4 Ω VBTST_REFRESH Bootstrap refresh comparator VBTST– VPH when low side refresh pulse 4 V threshold voltage is requested PWM LOW SIDE DRIVER (LODRV) RDS_LO_ON Low side driver (LSD) turn-on REGN = 6 V, tested at 100 mA 3 6 Ω resistance RDS_LO_OFF Low side driver turn-off resistance REGN = 6 V, tested at 100 mA 0.6 1.2 Ω PWM DRIVERS TIMING Driver Dead Time — Dead time when 30 ns switching between LODRV and HIDRV. No load at LODRV and HIDRV 9 Submit Documentation Feedback |
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