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bq27421YZFR-G1B Datasheet(PDF) 6 Page - Texas Instruments |
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bq27421YZFR-G1B Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 20 page  Active REGIN GPOUT * VDD State SHUTDOWN WAKE-UP tSHUP tSHDN tWUVDD WAKE-UP Off Active * GPOUT is configured as an input for wake-up signaling. SHUTDOWN SHUTDOWN_ ENABLE I2C Bus tPUCD tPUCD tVDD bq27421-G1 SLUSB85 – MAY 2013 www.ti.com LDO REGULATOR, WAKE-UP AND AUTO-SHUTDOWN AC CHARACTERISTICS TA = –40°C to 85°C, typical values at TA = 30°C and VREGIN = 3.6 V (unless otherwise noted)(Force Note1) (1) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tSHDN (1) SHUTDOWN Entry Time Time delay from SHUTDOWN 250 ms command to LDO output disable. tSHUP (1) SHUTDOWN GPOUT Low time Minimum low time of GPOUT (input) 10 μs in SHUTDOWN before WAKEUP tVDD (1) Initial VDD Output delay 13 ms tWUVDD (1) Wake-up VDD Output delay Time delay from rising edge of 8 ms GPOUT (input) to nominal VDD output. tPUCD Power-up communication delay Time delay from rising edge of 250 ms REGIN to the Active state. Includes firmware initialization time. (1) Specified by design. Not production tested. SHUTDOWN and WAKE-UP Timing Figure 1. SHUTDOWN and WAKE-UP Timing Diagram 6 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: bq27421-G1 |
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