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RT9758 数据表(PDF) 14 Page - Richtek Technology Corporation |
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RT9758 数据表(HTML) 14 Page - Richtek Technology Corporation |
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14 / 61 page ![]() RT9758 Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS9758-03 May 2023 14 Parameter Symbol Test Conditions Min Typ Max Unit Timing Device Wake Up Time tWAKE_UP Duration time between VDDA > VDDA_UVLO and device can start I2C communication -- 500 -- s Device into Standby Mode Time tSTANDBY_DELAY Duration time from Present mode to Standby mode -- 300 -- s Soft-Start Time for Bypass Mode tSS_BYPASS Timing about VOUT pre-charge to VBUS and Bypass RON fully turn on when Bypass mode is enabled with no load, Pre-charge current = 500mA, VOUT_ERR_ON_TIME = 2msec, COUT = 22 F x 1, VBUS = 5V -- -- 3 ms Soft-Start Time for DIV2 Mode tSS_DIV2 Timing about CFLY and VOUT pre-charge to (VBUS/2) and start switching when DIV2 mode is enabled with no load, Pre-charge current = 500mA, CFLY_DIAG_TIME = 2msec, VOUT_ERR_ON_TIME = 2msec, CFLY = 22 F x 2 each phase, COUT = 22 F x 1, VBUS = 10V -- -- 5 ms Soft-Start Time for Reverse Bypass Mode tSS_REVERSE_BYPASS Timing about Bypass RON fully turn on when Reverse Bypass mode is enabled with no load, Pre-charge current = 500mA, VOUT_ERR_ON_TIME = 2msec, VOUT = 5V -- -- 3 ms Soft-Start Time for Reverse DIV2 Mode tSS_REVERSE_DIV2 Timing about CFLY from 0V to 5V and start switching when reverse DIV2 mode is enabled with no load, Pre-charge current = 500mA, CFLY_DIAG_TIME = 2msec, CFLY = 22 F x 2 each phase, VOUT = 5V -- -- 4 ms Turn on Q0 Delay Time tQ0_DELAY 0x0D[1:0] = 10, Duration time between WRX_IN > WRX_INSERT and Q0 start to turn on -- 2 -- ms OVP Recovery Time tOVP_RECOVERY Only active in Bypass mode with register 0x0E[7] = 1, Select by register 0x0F[7] = 0 17 21 25 ms Only active in Bypass mode with register 0x0E[7] = 1, Select by register 0x0F[7] = 1 80 100 120 WRX_OK Pull Up Time tWRX_OK_PULL_UP VBUS > 5V, in standby mode, WRX_OK pin is floating, Duration time between WRX_IN > WRX_INSERT and WRX_OK pull to high level -- 16 -- s |
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