WM8311 datasheet(100/302 Pages) WOLFSON

Part #	WM8311

Description	Processor Power Management Subsystem

PDF	302 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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100 / 302 page

WM8311

Pre-Production

PP, May 2012, Rev 3.1

100

The input voltage to these LDOs is provided on pin LDOnVDD for each of LDO1-5, 7 respectively.

The LDO input supply pins are typically connected to the SYSVDD voltage node, or else can be

connected to the output pin of one of the DC-DC buck converters. Note that the internal supply pins

PVDD1 and PVDD2 should also be connected to SYSVDD.

LDO11 is a configurable LDO intended for ‘always-on’ functions external to the WM8311. The

WM8311 contains a further two non-configurable LDOs which support internal functions only.

The connections to LDO Regulator 1 are illustrated in Figure 22. The equivalent circuit applies to

LDO2, LDO3, LDO4, LDO5 and LDO7.

Figure 22 LDO Regulator Connections

An input and output capacitor are recommended for each LDO Regulator, as illustrated above.

See Section 30.5 for details of specific recommended external components.

WM8311 Datasheet(PDF) 100 Page - Wolfson Microelectronics plc