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BQ51051B Datasheet(PDF) 5 Page - Texas Instruments |
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BQ51051B Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 31 page  bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TERMINATION Programmable termination current as a percentage of KTERM RTERM = %IILIM x KTERM 200 240 280 Ω/% IILIM Constant current at the TERM pin to bias the ITERM 40 50 55 µA termination reference VBAT(REG) VBAT(REG) VBAT(REG) bq51050B –135mV –110mV –90mV VRECH Recharge threshold V VBAT(REG) VBAT(REG) VBAT(REG) bq51051B –125mV –95mV –70mV TS / CTRL ITS-Bias < 100 µA (periodically VTS Internal TS bias voltage 2 2.2 2.4 V driven see tTS/CTRL-Meas) Rising threshold VTS: 50% → 60% 57 58.7 60 VOC Falling threshold VTS: 60% → 50% 55 56.3 57 %VTSB Hysteresis on 0C Comparator VTS: 60% → 50% 2.4 V10C Rising threshold VTS: 40% → 50% 46 47.8 49 %VTSB V10C-Hyst Hysteresis on 10C Comparator VTS: 50% → 40% 2 %VTSB V45C Falling threshold VTS: 25% → 15% 18 19.6 21 %VTSB V45C-Hyst Hysteresis on 45C Comparator VTS: 15% → 25% 3 %VTSB V60C Falling threshold VTS: 20% → 5% 12 13.1 14 %VTSB V60C-Hyst Hysteresis on 60C Comparator VTS: 5% → 20% 1 %VTSB I45C ILIM reduction percentage at 45c VTS: 25% → 15%, ILOAD = IILIM 45 50 55 % VCTRL-HI CTRL pin threshold for a high VTS/CTRL: 50 → 150 mV 80 100 130 mV VCTRL-LOW CTRL pin threshold for a low VTS/CTRL: 150 → 50 mV 50 80 100 mV Time period of TS/CTRL measurements--when VTSB TS bias voltage is only driven when TTS/CTRL-Meas 24 ms is being driven communication packets are sent tTS-Deglitch Deglitch time for all TS comparators 10 ms Pull-up resistor for the NTC network. Pulled up to the NTC-Pullup 18 20 22 k Ω TS bias LDO. Nominal resistance requirement at 25c of the NTC NTC-RNOM 10 k Ω resistor Beta requirement for accurate temperature sensing via NTC-Beta 3380 Ω the above specified thresholds THERMAL PROTECTION Thermal shutdown temperature 155 °C TJ Thermal shutdown hysteresis 20 °C OUTPUT LOGIC LEVELS ON /CHG VOL Open drain CHG pin ISINK = 5 mA 500 mV VCHG = 20 V, IOFF,CHG CHG leakage current when disabled 1 µA 0°C ≤ TJ ≤ 85°C COMM PIN RDS- Comm1 and Comm2 Vrect = 2.6V 1 Ω ON(COMM) fCOMM Signaling frequency on COMM pin 2.00 Kb/s VCOMM1 = 20 V, IOFF,Comm Comm pin leakage current 1 µA VCOMM2 = 20 V CLAMP PIN RDS- Clamp1 and Clamp2 0.75 Ω ON(CLAMP) Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: bq51050B bq51051B |
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