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DA6021 Datasheet(PDF) 112 Page - Renesas Technology Corp |
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DA6021 Datasheet(HTML) 112 Page - Renesas Technology Corp |
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112 / 225 page  DA6021 HIGHLY INTEGRATED POWER MANAGEMENT IC FOR INTEL® ATOM™ Z3000 PROCESSOR Company Confidential Data Sheet Version 3.A - Final 31-Jan-14 © 2014 Dialog Semiconductor GmbH 112 of 224 www.dialog-semiconductor.com V3P3S: V3P3S is the voltage rail which is sourced by V3P3A and switched by an external P-channel FET. The power domain is used to power the display, MIPI LVDS bridge, SSD drive and audio codecs. The control signal V3P3S_EN_B is supplied by V3P3A and when asserted low, the signal slew rate is controlled to limit the in-rush current when the external P-channel FET turns on. Register Name V3P3S_CTRL Address 0x69 Page 1 Read/Write Reset Value 0x00 MSB LSB R R R R R R R/W R/W Reserved V3P3S _SEL V3P3S _EN V3P3S_EN 0 1 V3P3S_EN_B set to high V3P3S_EN_B set to low V3P3S_SEL 0 1 V3P3S_EN_B controlled by SLP_S3_B according to sequencing V3P3S_EN_B controlled by V3P3S_CTRL.V3P3S_EN bit Regardless of V3P3S_EN and V3P3S_SEL, V3P3S_EN_B is high when SLP_S3_B is asserted, means low V3P3S_CTRL. SLP_S3_B V3P3S_EN_B V3P3S_SEL V3P3S_EN 1 0 1 High 1 1 1 Low x X 0 High Table 74: V3P3S_EN_B Truth Table V3P3S external P-channel power switch parameters: Rdson (Vgs=3.3V) 35-62.5mohm Input capacitance, Ciss 750-2000pF Output capacitance, Coss 150-530pF Reverse transfer capacitance, Crss 100-360pF VUSBPHY: VUSBPHY is composed of V3P3A or VSYS via an internal power rail switch. It sources power from V3P3A whenever the V3P3A buck boost converter is enabled. When V3P3A is switched off VUSBPHY is sourced by VSYS. Description Value [max, m Ω] Val V3P3A input power path board resistance 10 - VSYS input power path board resistance 10 - Output power path board resistance 20 - Input, output rails wirebond & internal FET RDS-ON 305 A,D,E Table 75: VUSBPHY Power Switch Specification VSDIO: This power rail supplies energy towards the SDIO/MMC subsystem. The power rail is either supplied by 1.8V via V1P8_A buck converter or by V3P3_A. In case of a 3.3V supply, the internal switch has a RDSon of 200mΩ, in case of 1.8V the RDSon is 80mΩ. The maximum current is defined to 200mA. |
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