WM8310 Wolfson Microelectronics plc, WM8310 Datasheet

WM8310

Manufacturer Part Number

WM8310

Description

Processor Power Management Subsystem

Manufacturer

Wolfson Microelectronics plc

Datasheet

1.WM8310.pdf (11 pages)

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DESCRIPTION

WM8310 is an integrated power-management subsystem

which provides a cost-effective, flexible, single-chip solution for

power management, specifically targeted at the requirements

of a range of low-power portable applications. WM8310 is

specifically designed to operate as a system PMIC supporting

a variety of industry standard processors and accessories in a

wide range of applications.

The start-up behaviour and configuration is fully programmable

in an integrated OTP non-volatile memory. This highly flexible

solution helps reduce time-to-market, as changing application

requirements can be very easily accommodated in the OTP

contents.

The WM8310 power management subsystem comprises of

four programmable DC-DC converters, eleven LDO regulators

(four of which are low-noise for supplying sensitive analogue

subsystems). The integrated OTP bootstrap circuitry controls

the start-up sequencing and voltages of the converters and

regulators as well as the sequencing of system clocks.

WM8310 can be powered from a battery, a wall adaptor or

from a USB power source. An on-chip regulator provides

power for always-on PMIC functions such as register map and

the RTC. The device provides autonomous backup battery

switchover. A low-power LDO is included to support ‘always-

on’ processor power domains external to the WM8310.

A linear on-chip battery charger supports trickle charging and

constant current / constant voltage charging of single-cell

lithium-ion / lithium-polymer batteries. The charge current,

termination voltage, and charger time-out are programmable.

WM8310 detects and handles battery fault conditions with a

minimum of system software involvement.

A 12-bit Auxiliary ADC supports a wide range of applications

for internal as well as external analogue sampling, such as

voltage detection and temperature measurement.

WM8310 includes a crystal oscillator, an internal RC oscillator

and Frequency Locked Loop (FLL) to generate all clock signals

for autonomous system start-up and processor clocking. A

Secure Real-time Clock (S-RTC) and alarm function is

included, capable of waking up the system from low-power

modes. A watchdog function is provided to ensure system

integrity.

To maximise battery life, highly-granular power management

enables each function in the WM8310 subsystem to be

independently powered down through a control interface or

alternatively through register and OTP-configurable GPIOs.

The device offers a standby power consumption of <10uA,

making it particularly suitable for portable applications.

The WM8310 is supplied in a 7x7mm 169-ball BGA package,

ideal for use in portable systems. The WM8310 forms part of

the Wolfson series of audio and power management solutions.

WOLFSON MICROELECTRONICS plc

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FEATURES

Power Management

•

Backlight LED Current Sinks

•

Battery Charger

•

System Control

•

Additional Features

•

Package Options

•

APPLICATIONS

•

2 x DC-DC synch. buck converter (0.6V - 1.8V, 1.2A, DVS)

1 x DC-DC synch. buck converter (0.85V - 3.4V, 1A)

1 x DC-DC boost converter (up to 30V, up to 170mA)

1 x LDO regulator (0.9V - 3.3V, 300mA, 1Ω)

2 x LDO regulators (0.9V - 3.3V, 200mA, 1Ω)

3 x LDO regulators (0.9V - 3.3V, 100mA, 2Ω)

2 x Low-noise LDO regulators (1.0V - 3.5V, 200mA, 1Ω)

2 x Low-noise LDO regulators (1.0V - 3.5V, 150mA, 2Ω)

1 x ‘always on’ regulator (0.8V – 1.55V, up to 10mA)

2 x programmable constant current sinks, suitable for

multi-LED display backlight control

Programmable single-cell lithium-ion / lithium-polymer

battery charger (1A max charge current)

Battery monitoring for temperature and voltage

Autonomous backup battery charging and switching

Interrupt based feedback communication scheme

Watchdog timer and system reset control

Autonomous power sequencing and fault detection

Intelligent power path and power source selection

OTP memory bootstrap configuration function

Auxiliary ADC for multi-function analogue measurement

128-bit pseudo-random unique ID

Secure Real-time clock with wake-up alarm

12 x configurable multi-function (GPIO) pins

Comprehensive clocking scheme: low-power 32kHz RTC

crystal oscillator, Frequency Locked Loop, GPIO clock

output and 4MHz RC clock for power management

System LED outputs indicating power state, battery

charger or fault status

Selectable USB current limiting up to 1.8A (in accordance

with USB Battery Charging specification Rev 1.1)

7x7mm, 169-ball BGA package, 0.5mm ball pitch

Portable Media Players

Portable Navigation Devices

Cellular Handsets

Electronic Books

Electronic Gaming Devices

C or SPI compatible primary control interface

Product Brief, July 2009, Rev 1.0

WM8310

Related parts for WM8310

WM8310 Summary of contents

Page 1

... The device offers a standby power consumption of <10uA, making it particularly suitable for portable applications. The WM8310 is supplied in a 7x7mm 169-ball BGA package, ideal for use in portable systems. The WM8310 forms part of the Wolfson series of audio and power management solutions. WOLFSON MICROELECTRONICS plc ...

Page 2

... CLKIN Auxiliary Functions w DC-DC1 Dynamic Buck Bootstrap 0.6 to 1.8V EEPROM 1.2A Interface DVS OTP NVM Bootstrap Config & Unique 4MHz RC Oscillator Power WM8310 PM Sub- System Monitoring Aux ADC Battery Charger Real-Time Wake-Up Clock Timer Backup Battery Charger FLL Power Management DC-DC2 DC-DC3 DC-DC4 ...

Page 3

... USB and battery power sources according to the prevailing conditions. A backup battery supply is also supported in order to maintain the Real Time Clock (RTC) in the absence of any other supplies. The WM8310 provides a battery charger for the main battery aswell as the backup battery; these can be powered from either the wall adapter or USB supplies. ...

Page 4

... IREFR SYSVDD SYSVDD USBVDD BATTVMON USBVDD BATTVDD SYSVDD GND USBVDD GND GND GND SYSVMON SYSVDD BATTVDD USBVDD 7x7 BGA - TOP VIEW (WM8310) PACKAGE ) A 169-ball (7 x 7mm) (Pb-free) 169-ball (7 x 7mm) (Pb-free, tape and reel DC2GND DC1GND DC1LX DC1VDD DC2GND ...

Page 5

... Primary Control Interface Mode Select: DBVDD2 SPI Compatible Control Interface Mode SPI Compatible Control Interface Mode Control Interface Serial DBVDD1 Data Out DESCRIPTION 2 C Compatible Control Interface Mode Compatible Control Interface Mode No Function Product Brief, July 2009, Rev 1.0 WM8310 5 ...

Page 6

... WM8310 PIN NAME D8 SCLK1 Digital Input D7 SDA1 Digital I/O D10 CS ¯¯ Digital Input M9 SCLK2 Digital I/O H8 SDA2 Digital I/O D9, E9 DBVDD1 N3 DBVDD2 J12 DBVDD3 H13, K3, DBGND L3, M4 OTP Memory D4 PROGVDD DC-DC Converters and LDO Regulators B1, B2, B3, B13, C3, C4, C7, C8, C9, C10, C11, C12, D3, D6, D12, E3, ...

Page 7

... External Battery FET Driver Supply Wall VDD Supply/Sense External Wall FET Driver. highest VDD Power domain is the highest out of WALLVDD, supply USBVDD or BATTVDD. Battery NTC Temperature Monitor Supply VPMIC Battery NTC Temperature Monitor Voltage Sense Input WM8310 DESCRIPTION Product Brief, July 2009, Rev 1.0 7 ...

Page 8

... WM8310 PIN NAME H9 BACKUPVDD Status LED Drivers J11 LED1 Digital Output K11 LED2 Digital Output Do Not Connect C5, H3, H10, H11, J13, K12, DNC M2, M3, N1 TYPE POWER DOMAIN Secondary (Backup) Battery Supply Supply Status LED Driver 1. Open Drain Output SYSVDD Status LED Driver 2. Open Drain Output ...

Page 9

... MSL1 = unlimited floor life at <30°C / 85% Relative Humidity. Not normally stored in moisture barrier bag. MSL2 = out of bag storage for 1 year at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag. MSL3 = out of bag storage for 168 hours at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag. The WM8310 has been classified as MSL3. CONDITION OTP Programming Supply (PROGVDD) ...

Page 10

... WM8310 PACKAGE DIAGRAM B: 169 BALL BGA PLASTIC PACKAGE DETAIL 2 D1 SIDE VIEW BOTTOM VIEW bbb Z aaa Dimensions (mm) Symbols MIN NOM 1.17 A 0.17 0.21 A1 0.91 0.96 A2 0.30 b 0.25 7.00 BSC D 6.00 BSC D1 7.00 BSC E 6.00 BSC E1 e 0.50 BSC Tolerances of Form and Position 0 ...

Page 11

... Wolfson is not liable for any such representations, warranties or liabilities or for any reliance placed thereon by any person. ADDRESS: Wolfson Microelectronics plc Westfield House 26 Westfield Road Edinburgh EH11 2QB United Kingdom Tel :: +44 (0)131 272 7000 Fax :: +44 (0)131 272 7001 Email :: sales@wolfsonmicro.com w WM8310 Product Brief, July 2009, Rev 1.0 11 ...

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