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BQ24045 Datasheet(PDF) 9 Page - Texas Instruments |
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BQ24045 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 38 page bq24040, bq24041, bq24045 www.ti.com SLUS941F – SEPTEMBER 2009 – REVISED MARCH 2015 7.6 Timing Requirements MIN TYP MAX UNIT INPUT Time measured from VIN: 0V → 5V 1μs rise-time to tDGL(PG_PWR) Deglitch time on exiting sleep. 45 μs PG = low, VOUT = 3.6V tDGL(PG_NO- Deglitch time on VHYS-INDT power down. Time measured from VIN: 5V → 3.2V 1μs fall-time to 29 ms PWR) Same as entering sleep. PG = OC, VOUT = 3.6V tDGL(OVP-SET) Input over-voltage blanking time VIN: 5V → 12V 113 μs Time measured from VIN: 12V → 5V 1μs fall-time to tDGL(OVP-REC) Deglitch time exiting OVP 30 μs PG = LO ISET SHORT CIRCUIT TEST Deglitch time transition from ISET short to Clear fault by disconnecting IN or cycling (high / low) tDGL_SHORT 1 ms IOUT disable TS/BAT_EN PRECHARGE – SET BY PRETERM PIN: bq24040 / bq24045; Internally Set: bq24041 Deglitch time on pre-charge to fast-charge tDGL1(LOWV) 70 μs transition Deglitch time on fast-charge to pre-charge tDGL2(LOWV) 32 ms transition TERMINATION – SET BY PRE-TERM PIN: bq24040 / bq24045 tDGL(TERM) Deglitch time, termination detected 29 ms Elevated termination threshold initially tTerm-Start 1.25 min active for tTerm-Start RECHARGE OR REFRESH – bq24040 / bq24045 VIN = 5V, VTS = 0.5V, VOUT: 4.25V → 3.5V in 1μs; tDGL1(RCH) Deglitch time, recharge threshold detected 29 ms tDGL(RCH) is time to ISET ramp Deglitch time, recharge threshold detected VIN = 5V, VTS = 0.5V, VOUT = 3.5V inserted; tDGL(RCH) tDGL2(RCH) 3.6 ms in OUT-Detect Mode is time to ISET ramp BATTERY DETECT ROUTINE – bq24040 / bq24045 (NOTE: In Hot mode VO(REG) becomes VO_HT(REG)) tDGL(HI/LOW Regulation time at VREG or VREG-BD 25 ms REG) BATTERY CHARGING TIMERS AND FAULT TIMERS: bq24040 and bq24045 only Restarts when entering Pre-charge; Always enabled tPRECHG Pre-charge safety timer value 1700 1940 2250 s when in pre-charge. Clears fault or resets at UVLO, TS/BAT_EN disable, tMAXCH Charge safety timer value 34000 38800 45000 s OUT Short, exiting LOWV and Refresh BATTERY-PACK NTC MONITOR; TS Terminal: bq24040 / bq24045: 10k NTC Deglitch exit TTDM between states 57 ms tDGL(TTDM) Deglitch enter TTDM between states 8 μs Normal to Cold Operation; VTS: 0.6V → 1V 50 ms tDGL(TS_10C) Deglitch for TS thresholds: 10C. Cold to Normal Operation; VTS: 1V → 0.6V 12 ms tDGL(TS) Deglitch for TS thresholds: 0/45/60C. Battery charging 30 ms Copyright © 2009–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: bq24040 bq24041 bq24045 |
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Similar Description - BQ24045_15 |
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