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BQ24087DRCT Datasheet(PDF) 4 Page - Texas Instruments |
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BQ24087DRCT Datasheet(HTML) 4 Page - Texas Instruments |
4 / 35 page ELECTRICAL CHARACTERISTICS (Continued) mA kW Volts bq24085, bq24086 bq24087, bq24088 SLUS784D – DECEMBER 2007 – REVISED AUGUST 2009............................................................................................................................................. www.ti.com over recommended operating, TJ = 0°C–125°C range, See the Application Circuits section, typical values at TJ = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOLTAGE REGULATION, V(IN) ≥ VO(REG) + V(DO-MAX), I(TERM) < I(OUT) < IO(OUT), CHARGER ENABLED, NO FAULT CONDITIONS DETECTED VO(REG) Output voltage 4.20 V TA = 25°C –0.5% 0.5% VO(TOL) Voltage regulation accuracy –1% 1% V(DO) Dropout voltage, V(IN) – V(OUT) I(OUT) = 750 mA 600 mV CURRENT REGULATION , V(IN) > V(OUT) > V(DO-MAX), CHARGER ENABLED, NO FAULT CONDITIONS DETECTED V(BAT) > V(LOWV), IO(OUT) = I(OUT) = K(SET) × IO(OUT) Output current range 50 750 mA V(SET)/R(SET) V(SET) Output current set voltage V(ISET) = V(SET), V(LOWV) < V(BAT) ≤ VO(REG) 2.45 2.5 2.55 V 100 mA ≤ IO(OUT) ≤ 750 mA 175 182 190 K(SET) Output current set factor 10 mA ≤ IO(OUT) < 100 mA 180 215 250 RISET External resistor range Resistor connected to ISET pin 0.6 10 k Ω VOLTAGE AND CURRENT REGULATION TIMING, V(IN) > V(OUT) + V(DO-MAX), CHARGER ENABLED, NO FAULT CONDITIONS DETECTED, RTMR = 50K or V(TMR) = OPEN; Thermal regulation loop not active Input power detection to full Measured from PG:HI → LO to I(OUT) > 100 mA, tPWRUP(CHG) 25 ms charge current time delay CE = LO, IO(OUT) = 750 mA, V(BAT) = 3.5 V Measured from CE:HI → LO to I(OUT) >100 mA, Charge enable to full charge tPWRUP(EN) IO(OUT) = 750 mA, V(BAT)= 3.5 V, V(IN) = 4.5 V, Input 25 ms current delay power detected Measured from PG:HI → LO to V(OUT) > 90% of Input power detection to voltage charge voltage regulation; tPWRUP(LDO) regulation delay, LDO mode set, 25 ms V(TMR) = OPEN, LDO mode set, no battery and no no battery or load connected load at OUT pin, CE = LO PRECHARGE AND OUTPUT SHORT-CIRCUIT CURRENT REGULATION, V(IN)–V(OUT) > V(DO-MAX) , V(IN) ≥ 4.5V, CHARGER ENABLED, NO FAULT CONDITIONS DETECTED, RTMR = 50K or V(TMR)=OPEN; Thermal regulation loop not active Precharge to fast-charge V(LOWV) V(BAT) increasing 2.8 2.95 3.15 V transition threshold Precharge to short-circuit V(SC) V(BAT) decreasing 1 transition threshold V V(SCIND) Short-circuit indication V(BAT) decreasing 1.6 1.8 2 V(SC) < VI(BAT) < V(LOWV), t < t(PRECHG) IO(PRECHG) Precharge current range 5 75 mA IO(PRECHG) = K(SET) × V(PRECHG)/R(ISET) V(ISET) = V(PRECHG), V(SC) < VI(BAT) < V(LOWV), V(PRECHG) Precharge set voltage 225 250 280 mV t < t(PRECHG) VSS ≤ V(BAT) ≤ V(SCI), VPOR < VIN < 6.0 V 7 15 24 IO(SHORT) = I(OUT), V(BAT)= IO(SHORT) Output shorted regulation current mA VSS, Internal pullup resistor, 6.0 V < VIN < VOVP 15 TJ = 25°C TEMPERATURE REGULATION (Thermal regulation™), CHARGER ENABLED, NO FAULT CONDITIONS DETECTED V(IN) = 5.5 V, V(BAT) = 3.2 V, Fast charge current TJ(REG) Temperature regulation limit 101 112 125 °C set to 1A V(LOWV) < V(BAT) < VO(REG), Minimum current in thermal I(MIN_TJ(REG)) 105 125 mA regulation 0.7k Ω < R(ISET) < 1.18kΩ 4 Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated Product Folder Link(s): bq24085, bq24086 bq24087, bq24088 |
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