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BQ40Z50-R1 数据表(PDF) 9 Page - Texas Instruments |
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BQ40Z50-R1 数据表(HTML) 9 Page - Texas Instruments |
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9 / 56 page  bq40z50-R1 www.ti.com SLUSCB3 – JULY 2015 Electrical Characteristics: Power Supply Control (continued) Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC = 2.2 V to 26 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VCC to BAT VSWITCHOVER+ switchover VBAT > VSWITCHOVER– + VHYS 2.9 3.1 3.25 V voltage Switchover VHYS VSWITCHOVER+ – VSWITCHOVER– 1000 mV voltage hysteresis BAT pin, BAT = 0 V, VCC = 25 V, PACK = 25 V 1 Input Leakage PACK pin, BAT = 25 V, VCC = 0 V, PACK = 0 V 1 ILKG µA current BAT and PACK terminals, BAT = 0 V, VCC = 0 V, PACK 1 = 0 V, PBI = 25 V Internal pulldown RPD PACK 30 40 50 k Ω resistance 7.7 Electrical Characteristics: AFE Power-On Reset Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC = 2.2 V to 26 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Negative-going VREGIT– VREG 1.51 1.55 1.59 V voltage input Power-on reset VHYS VREGIT+ – VREGIT– 70 100 130 mV hysteresis Power-on reset tRST 200 300 400 µs time 7.8 Electrical Characteristics: AFE Watchdog Reset and Wake Timer Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC = 2.2 V to 26 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tWDT = 500 372 500 628 tWDT = 1000 744 1000 1256 AFE watchdog tWDT ms timeout tWDT = 2000 1488 2000 2512 tWDT = 4000 2976 4000 5024 tWAKE = 250 186 250 314 tWAKE = 500 372 500 628 tWAKE AFE wake timer ms tWAKE = 1000 744 1000 1256 tWAKE = 512 1488 2000 2512 FET off delay after tFETOFF tFETOFF = 512 409 512 614 ms reset 7.9 Electrical Characteristics: Current Wake Comparator Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC = 2.2 V to 26 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VWAKE = ±0.625 mV ±0.3 ±0.625 ±0.9 VWAKE = ±1.25 mV ±0.6 ±1.25 ±1.8 Wake voltage VWAKE mV threshold VWAKE = ±2.5 mV ±1.2 ±2.5 ±3.6 VWAKE = ±5 mV ±2.4 ±5.0 ±7.2 Temperature drift VWAKE(DRIFT) 0.5% °C of VWAKE accuracy Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: bq40z50-R1 |
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