900844 datasheet(28/118 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

900844

FUNCTIONAL DESCRIPTION

GENERAL DESCRIPTION

FUNCTIONAL DESCRIPTION

GENERAL DESCRIPTION

The 900844 is a high efficiency Power Management Integrated Circuit (PMIC). It is optimized for Ultra-mobile platforms for

Netbook, Tablets, Slates, embedded devices, and other applications requiring “multi-cell” battery voltage.

The 900844 PMIC, is designed to provide CPU power requirements and control as an integral part of Freescale's power

management solution to meet the needs of Ultra-mobile platforms.

Optimum partitioning, high feature integration, and state of the art technology, enable Freescale to support Ultra-mobile

platforms that are cost effective, by reducing component count and board area. The Freescale solution also allows ease of

system design, resulting in a faster time to market development cycle.

It accepts input from a supply in the range of 3.0 to 4.4 V (for example, from a multi-cell battery scaled down to 3.3 V) to deliver

regulated power to various components (CPU, chip sets, wireless, memory, storage, display, sensors, and others) on Ultra-

mobile platforms.

Figure 4. Power Management Solution - High Level Block Diagram

FEATURE LIST

• Netbook, Tablets, and embedded devices, Ultra-mobile platform Architecture Support

• Fully Programmable DC/DC Switching, Low Drop-Out Regulators, and Load Switches

• Delivers regulated reliable power to various system components

• High efficiency multi mode power conversion ensuring extended battery life

• Fully programmable with extensive protection features and complete fault reporting for best in class overall system reliability

• Internal Compensation

• 5 Buck DC/DC Regulators

- 2x VID Controlled with 1.0 MHz switching and external switches for CPU and Graphics core support

- 3x with 4.0 MHz switching and integrated MOSFET for platform support and LDO supply for optimized thermal

performance and power efficiency.

• 14 Low Dropout (LDO) regulators.

• One configurable LDO/Switch regulator for SDIO card support

•A 3.3 V load switch for platform support

• Coin Cell Backup battery charger

• SPI communication interface (up to 25 MHz operation)

• 22 channel (32 capable) 10-bit ADC for internal and external sensing with touch screen interface

• Low power 32.786 kHz XTAL oscillator.

• Real Time Clock (RTC) to provide time reference and alarm functions with wake up control.

• Eight Interrupt capable GPIOs and 8 GPOs

• Various control and status reporting I/Os

• Interrupt and Reset controller. All interrupt signals can be masked.

• Overall solution size target of < 400 mm2 (including clearance and routing)

• Operating temperature of -40 to +85 °C

5 x DC/DC

multi-mode

SWITCHERS

2 x VID

4.0 MHz Switching

Core, I/O, MEM

14 x LDO

REGULATORS

+1 x Power Switch

Low Noise

High Performance

22 Channel 10 bit ADC

PMIC Temp Monitoring

4-Wire Resistive Touch Screen

Select Rails Current Monitoring

General Purpose Inputs

Freescale’s

PMIC Platform

Solution

Power

Control

Logic

State Machine

Control Interface

8 Interrupt Capable GPIOs

SPI Interface + Status and Control Inputs / Outputs

RTC 32.768 kHz

Xtal Oscillator

900844 Datasheet(PDF) 28 Page - Freescale Semiconductor, Inc

900844 Datasheet(HTML) 28 Page - Freescale Semiconductor, Inc

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