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BQ40Z50-R1 数据表(PDF) 17 Page - Texas Instruments |
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BQ40Z50-R1 数据表(HTML) 17 Page - Texas Instruments |
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17 / 56 page ![]() bq40z50-R1 www.ti.com SLUSCB3 – JULY 2015 Timing Requirements: OCD, SCC, SCD1, SCD2 Current Protection Timing (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) MIN NOM MAX UNIT SCD1 detection AFE PROTECTION CONTROL[SCDDx2] = 0 61 ΔtSCD1 delay time µs AFE PROTECTION CONTROL[SCDDx2] = 1 121 program step AFE PROTECTION CONTROL[SCDDx2] = 0 0 458 SCD2 detection tSCD2 µs delay time AFE PROTECTION CONTROL[SCDDx2] = 1 0 915 SCD2 detection AFE PROTECTION CONTROL[SCDDx2] = 0 30.5 ΔtSCD2 delay time µs AFE PROTECTION CONTROL[SCDDx2] = 1 61 program step Current fault VSRP – VSRN = VT – 3 mV for OCD, SCD1, and SC2, tDETECT 160 µs detect time VSRP – VSRN = VT + 3 mV for SCC Current fault tACC delay time Max delay setting –10% 10% accuracy 7.33 Timing Requirements: SMBus 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) MIN NOM MAX UNIT SMBus operating fSMB SLAVE mode, SMBC 50% duty cycle 10 100 kHz frequency SMBus master clock fMAS MASTER mode, no clock low slave extend 51.2 kHz frequency Bus free time between start tBUF 4.7 µs and stop Hold time after (repeated) tHD(START) 4.0 µs start tSU(START) Repeated start setup time 4.7 µs tSU(STOP) Stop setup time 4.0 µs tHD(DATA) Data hold time 300 ns tSU(DATA) Data setup time 250 ns tTIMEOUT Error signal detect time 25 35 ms tLOW Clock low period 4.7 µs tHIGH Clock high period 4.0 50 µs tR Clock rise time 10% to 90% 1000 ns tF Clock fall time 90% to 10% 300 ns Cumulative clock low slave tLOW(SEXT) 25 ms extend time Cumulative clock low tLOW(MEXT) 10 ms master extend time 7.34 Timing Requirements: SMBus XL 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) MIN NOM MAX UNIT fSMBXL SMBus XL operating SLAVE mode 40 400 kHz frequency tBUF Bus free time between start 4.7 µs and stop tHD(START) Hold time after (repeated) 4.0 µs start Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 17 Product Folder Links: bq40z50-R1 |
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