TPS65921 datasheet(45/58 Pages) TI1

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SWCS048-023

VBUS

USB connector

Switched 3.3 V

VBAT.USB

CPOUT

CP.GND

CP.IN

USBIN

USB3P3

5.0-V CP

USB PHY

Normal operation

USB @ VBUS > 4.4 V

Power-up

USB @ VBAT > 3.20 V

TPS65921

OMAP

(LINK)

ULPI

Phone connector

(USB)

ADC inputs

(optional)

USB OTG device

Charger

Device

USB PHY

SWCS048-024

TPS65921

www.ti.com

SWCS048F – MARCH 2010 – REVISED MARCH 2012

Figure 21. General Overview of the Charge Pump and Its Interfaces

It can be used to supply USB 3.1 V LDO when battery voltage is lower than this LDO VBATmin voltage (see

electrical characteristics).

USB Transceiver

The TPS65921 device includes a USB OTG transceiver that support USB 480 Mbps HS, 12 Mbps FS, and USB

1.5 Mbps LS through a 4-pin UTMI+ ULPI.

It also includes a module covering Battery Charging Specification v1.0. Figure 22 shows the USB 2.0 PHY

highlight block diagram.

Figure 22. USB 2.0 PHY Highlight

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TPS65921 Datasheet(PDF) 45 Page - Texas Instruments

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