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BQ24725A Datasheet(PDF) 8 Page - Texas Instruments |
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BQ24725A Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 47 page  bq24725A SLUSAL0A – SEPTEMBER 2011 – REVISED AUGUST 2014 www.ti.com Electrical Characteristics (continued) 4.5 V ≤ VVCC ≤ 24 V, 0°C ≤ TJ ≤ 125°C, typical values are at TA = 25°C, with respect to GND (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ChargeOption() Bit [1] = 1 (333%), VACOC_min Min ACOC threshold clamp voltage 40 45 50 mV InputCurrent () = 0x0400H (10.24mV) ChargeOption() Bit [1] = 1 (333%), VACOC_max Max ACOC threshold clamp voltage 135 150 165 mV InputCurrent () = 0x1F80H (80.64mV) Voltage across input sense resistor rising to disable tACOC_DEG ACOC deglitch time (Specified by design) 2.3 4.2 6.6 ms charge BAT OVER-VOLTAGE COMPARATOR (BAT_OVP) VOVP_RISE Over voltage rising threshold as VSRN rising 103% 104% 106% percentage of VBAT_REG VOVP_FALL Over voltage falling threshold as VSRN falling 102% percentage of VBAT_REG CHARGE OVER-CURRENT COMPARATOR (CHG_OCP) ChargeCurrent()=0x0xxxH 54 60 66 mV Charge over current rising threshold, VOCP_RISE measure voltage drop across current ChargeCurrent()=0x1000H – 0x17C0H 80 90 100 mV sensing resistor ChargeCurrent()=0x1800 H– 0x1FC0H 110 120 130 mV CHARGE UNDER-CURRENT COMPARATOR (CHG_UCP) VUCP_FALL Charge under-current falling threshold VSRP falling towards VSRN 1 5 9 mV LIGHT LOAD COMPARATOR (LIGHT_LOAD) VLL_FALL Light load falling threshold 1.25 mV Measure the voltage drop across current sensing resistor VLL_RISE_HYST Light load rising hysteresis 1.25 mV BATTERY DEPLETION COMPARATOR (BAT_DEPL) [1] ChargeOption() bit [12:11] = 00 55.53% 59.19% 63.5% Battery depletion falling threshold, ChargeOption() bit [12:11] = 01 58.68% 62.65% 67.5% VBATDEPL_FALL percentage of voltage regulation limit, VSRN ChargeOption() bit [12:11] = 10 62.17% 66.55% 71.5% falling ChargeOption() bit [12:11] = 11 (Default) 66.06% 70.97% 77% ChargeOption() bit [12:11] = 00 225 305 400 mV ChargeOption() bit [12:11] = 01 240 325 430 mV Battery depletion rising hysteresis, VSRN VBATDEPL_RHYST rising ChargeOption() bit [12:11] = 10 255 345 450 mV ChargeOption() bit [12:11] = 11 (Default) 280 370 490 mV Battery Depletion Rising Deglitch Delay to turn off ACFET and turn on BATFET during tBATDEPL_RDEG 600 ms (Specified by design) LEARN cycle BATTERY LOWV COMPARATOR (BAT_LOWV) VBATLV_FALL Battery LOWV falling threshold VSRN falling 2.4 2.5 2.6 V VBATLV_RHYST Battery LOWV rising hysteresis VSRN rising 200 mV IBATLV Battery LOWV charge current limit 10 m Ω current sensing resistor 0.5 A THERMAL SHUTDOWN COMPARATOR (TSHUT) TSHUT Thermal shutdown rising temperature Temperature rising 155 °C TSHUT_HYS Thermal shutdown hysteresis, falling Temperature falling 20 °C ILIM COMPARATOR VILIM_FALL ILIM as CE falling threshold VILIM falling 60 75 90 mV VILIM_RISE ILIM as CE rising threshold VILIM rising 90 105 120 mV LOGIC INPUT (SDA, SCL) VIN_ LO Input low threshold 0.8 V VIN_ HI Input high threshold 2.1 V IIN_ LEAK Input bias current V = 7 V –1 1 μA LOGIC OUTPUT OPEN DRAIN (ACOK, SDA) VOUT_ LO Output saturation voltage 5 mA drain current 500 mV IOUT_ LEAK Leakage current V = 7 V –1 1 μA ANALOG INPUT (ACDET, ILIM) IIN_ LEAK Input bias current V = 7 V –1 1 μA PWM OSCILLATOR FSW PWM switching frequency ChargeOption () bit [9] = 0 (Default) 600 750 900 kHz 8 Submit Documentation Feedback Copyright © 2011–2014, Texas Instruments Incorporated Product Folder Links: bq24725A |
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