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bq20z45-R1DBTR Datasheet(PDF) 8 Page - Texas Instruments |
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bq20z45-R1DBTR Datasheet(HTML) 8 Page - Texas Instruments |
8 / 18 page bq20z45-R1 SLUS992 – DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V, V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Effective input resistance(10) TA = 25°C to 85°C 2.5 M Ω INTERNAL TEMPERATURE SENSOR V(TEMP) Temperature sensor voltage(11) -2.0 mV/°C VOLTAGE REFERENCE Output voltage 1.215 1.225 1.230 V Output voltage drift 65 PPM/°C HIGH FREQUENCY OSCILLATOR f(OSC) Operating frequency 4.194 MHz –3% 0.25% 3% f(EIO) Frequency error (12) (13) TA = 20°C to 70°C –2% 0.25% 2% t(SXO) Start-up time(14) 2.5 5 ms LOW FREQUENCY OSCILLATOR f(LOSC) Operating frequency 32.768 kHz –2.5% 0.25% 2.5% f(LEIO) Frequency error(13) (15) TA = 20°C to 70°C –1.5% 0.25% 1.5% t(LSXO) Start-up time(14) 500 µs (10) The CC input is a switched capacitor input. Since the input is switched, the effective input resistance is a measure of the average resistance. (11) –53.7 LSB/°C (12) The frequency error is measured from 4.194 MHz. (13) The frequency drift is included and measured from the trimmed frequency at V(REG25) = 2.5V, TA = 25°C (14) The startup time is defined as the time it takes for the oscillator output frequency to be ±3% (15) The frequency error is measured from 32.768 kHz. 8 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): bq20z45-R1 |
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