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bq24088 Datasheet(PDF) 7 Page - Texas Instruments |
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bq24088 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 42 page bq24085, bq24086, bq24087, bq24088 www.ti.com SLUS784E – DECEMBER 2007 – REVISED DECEMBER 2015 Electrical Characteristics (continued) over recommended operating range, TJ = 0 –125°C range, See the Application and Implementation section, typical values at TJ = 25°C (unless otherwise noted), RTMR = 49.9 KΩ PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 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 PRECHARGE AND OUTPUT SHORT-CIRCUIT CURRENT REGULATION(6) Precharge to fast-charge transition V(LOWV) V(BAT) increasing 2.8 2.95 3.15 V threshold Precharge to short-circuit transition V(SC) V(BAT) decreasing 1.2 1.4 1.6 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) VPOR < VIN < VSS ≤ V(BAT) ≤ V(SCI), 7 15 24 6.0 V IO(SHORT) = I(OUT), V(BAT)= VSS, IO(SHORT) Output shorted regulation current mA Internal pullup resistor, 6.0 V < VIN < 15 TJ = 25°C VOVP TEMPERATURE REGULATION (Thermal regulation™)(7) V(IN) = 5.5 V, V(BAT) = 3.2 V, Fast charge current TJ(REG) Temperature regulation limit 101 112 125 °C set to 1 A V(LOWV) < V(BAT) < VO(REG), I(MIN_TJ(REG)) Minimum current in thermal regulation 105 125 mA 0.7 k Ω < R(ISET) < 1.18 kΩ CHARGE TERMINATION DETECTION(8) I(TERM) Termination detection current range V(BAT) > V(RCH), I(TERM) = K(SET) × V(TERM)/R(ISET) 5 75 mA Charge termination detection set V(TERM) V(BAT) > V(RCH) 225 250 275 mV voltage(9) BATTERY RECHARGE THRESHOLD V(RCH) Recharge threshold detection [VO(REG)–V(BAT) ] > V(RCH) 75 100 135 mV TIMERS(10) Charge timer and termination enable Charge timer AND termination bq24085/86/88 threshold disabled at: V(TMR) > VTMR(OFF) VTMR(OFF) 2.5 3 3.5 V Charge timer disabled at: Charge timer enable threshold bq24087 V(TMR) > VTMR(OFF) BATTERY DETECTION THRESHOLDS IDET(DOWN) Battery detection current (sink) 2 V < V(BAT) < VO(REG) 1 2 3.2 mA IO(PR IDET(UP) Battery detection current (source) 2 V < V(BAT) < VO(REG) mA ECHG) TIMER FAULT RECOVERY I(FAULT) Fault Current (source) V(OUT) < V(RCH) 0.8 1.1 mA OUTPUT CURRENT SAFETY LIMIT(11) I(SETSC) Charge overcurrent safety V(ISET) = VSS 1.5 A (6) V(IN)–V(OUT) > V(DO-MAX) , V(IN) ≥ 4.5 V, charger enabled, no fault conditions detected, RTMR = 50 K or V(TMR)=OPEN; thermal regulation loop not active. (7) Charger enabled, no fault conditions detected. (8) VO(REG) = 4.2 V, charger enabled, no fault conditions detected, thermal regulation loop not active, RTMR = 50 K or TMR pin open. (9) The voltage on the ISET pin is compared to the V(TERM) voltage to determine when the termination should occur. (10) CE = LO, charger enabled, no fault conditions detected, V(TMR) < 3 V, timers enabled. (11) V(IN) ≥ 4.5 V, charger enabled, ISET shorted to GND. Copyright © 2007–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: bq24085 bq24086 bq24087 bq24088 |
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