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BQ27743 データシート(PDF) 9 Page - Texas Instruments |
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BQ27743 データシート(HTML) 9 Page - Texas Instruments |
9 / 42 page 9 bq27743 www.ti.com SLUSCM0A – JUNE 2017 – REVISED SEPTEMBER 2018 Product Folder Links: bq27743 Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated 7.13 Short-Circuit in Discharge (SCD) TA = 25°C, CREG25 = 1.0 µF, and VVPWR = 3.6 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VSCD SCD detection voltage threshold TA = 25°C VSRN – VSRP VSCD – 3 VSCD VSCD + 3 mV TA = –20°C to 60°C VSRN – VSRP 0.98 × VSCD – 3.125 VSCD 1.02 × VSCD + 3.125 TA = –40°C to 85°C VSRN – VSRP 0.98 × VSCD – 3.5 VSCD 1.02 × VSCD + 3.5 tSCD SCD delay time TA = –40°C to 85°C tSCD – 30% tSCD tSCD + 30% µs 7.14 Low Voltage Charging TA = 25°C, CREG25 = 1.0 µF, and VVPWR = 3.6 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VLVDET Voltage threshold for low-voltage charging detection TA = –40°C to 85°C 1.4 1.55 1.7 V 7.15 Internal Temperature Sensor Characteristics TA = –40°C to 85°C, 2.4 V < VREG25 < 2.6 V PARAMETER TEST CONDITIONS MIN TYP MAX UNIT G(TEMP) Temperature sensor voltage gain –2 mV/°C (1) The frequency error is measured from 2.097 MHz. (2) The frequency drift is included and measured from the trimmed frequency at VREG25 = 2.5 V, TA = 25°C. (3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3% of the typical oscillator frequency. 7.16 High-Frequency Oscillator 2.4 V < VREG25 < 2.6 V; typical values at TA = 25°C and VREG25 = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fOSC Operating frequency 8.389 MHz fEIO Frequency error(1) (2) TA = 0°C to 60°C –2.0% 0.38% 2.0% TA = –20°C to 70°C –3.0% 0.38% 3.0% TA = –40°C to 85°C –4.5% 0.38% 4.5% tSXO Start-up time(3) TA = –40°C to 85°C 2.5 5 ms (1) The frequency drift is included and measured from the trimmed frequency at VREG25 = 2.5 V, TA = 25°C. (2) The frequency error is measured from 32.768 kHz. (3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3% of the typical oscillator frequency. 7.17 Low-Frequency Oscillator 2.4 V < VREG25 < 2.6 V; typical values at TA = 25°C and VREG25 = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT f(LOSC) Operating frequency 32.768 kHz f(LEIO) Frequency error(1) (2) TA = 0°C to 60°C –1.5% 0.25% 1.5% TA = –20°C to 70°C –2.5% 0.25% 2.5% TA = –40°C to 85°C –4.0% 0.25% 4.0% t(LSXO) Start-up time(3) TA = –40°C to 85°C 500 μs 7.18 Integrating ADC (Coulomb Counter) Characteristics TA = –40°C to 85°C, 2.4 V < VREG25 < 2.6 V; typical values at TA = 25°C and VREG25 = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VSR_IN Input voltage range, VSRN and VSRP VSR = VSRP – VSRN VVPWR – 0.125 VVPWR + 0.125 V tSR_CONV Conversion time Single conversion 1 s |
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同様の説明 - BQ27743 |
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