ACT8892Q4I134-T,ACT8892Q4I134-T pdf中文资料,ACT8892Q4I134-T引脚图,ACT8892Q4I134-T电路-Datasheet-电子工程世界

文档预览

ACT8892

Rev 3, 28-June-17

Advanced Power Management Unit

FEATURES



Three Step-Down DC/DC Converters

Four Low-Dropout Linear Regulators

Serial Interface

Advanced Enable/Disable Sequencing Controller

Minimal External Components

Tiny 4×4mm TQFN44-32 Package



0.75mm Package Height



Pb-Free and RoHS Compliant

GENERAL DESCRIPTION

The ACT8892 is a complete, cost effective, highly-

efficient

ActivePMU

power management solution

that is ideal for a wide range of high performance

portable handheld applications such as tablet or pad

devices.

This device features three step-down DC/DC

converters and four low-noise, low-dropout linear

regulators.

The three DC/DC converters utilize a high-

efficiency, fixed-frequency (2MHz), current-mode

PWM control architecture that requires a minimum

number of external components. Two DC/DCs are

capable of supplying up to 1150mA of output

current, while the third supports up to 1300mA. All

four low-dropout linear regulators are high-

performance, low-noise, regulators that supply up to

320mA.

The ACT8892 is available in a compact, Pb-Free

and RoHS-compliant TQFN44-32 package.

TYPICAL APPLICATION DIAGRAM

Battery

REG1

Step-Down

DC/DC

nPBIN

PWRHLD

PWREN

VSEL

nPBSTAT

SCL

SDA

nIRQ

nRSTO

REG2

Step-Down

DC/DC

System

Control

REG3

Step-Down

DC/DC

REG4

LDO

REG5

LDO

REG6

LDO

VSYS

OUT1

0.6V to 3.9V

Up to 1150mA

OUT2

0.6V to 3.9V

Up to 1150mA

OUT3

0.6V to 3.9V

Up to 1300mA

OUT4

0.6V to 3.9V

Up to 320mA

OUT5

0.6V to 3.9V

Up to 320mA

OUT6

0.6V to 3.9V

Up to 320mA

OUT7

0.6V to 3.9V

Up to 320mA

www.active-semi.com

ACT8892

REG7

LDO

Innovative Power

ActivePMU

is a trademark of Active-Semi.

is a trademark of NXP.

-1-

ACT8892

Rev 2, 01-Jul-15

TABLE OF CONTENTS

General Information ..................................................................................................................................... p. 01

Functional Block Diagram ............................................................................................................................ p. 03

Ordering Information .................................................................................................................................... p. 04

Pin Configuration ......................................................................................................................................... p. 04

Pin Descriptions ........................................................................................................................................... p. 05

Absolute Maximum Ratings ......................................................................................................................... p. 07

C Interface Electrical Characteristics ........................................................................................................ p. 08

Global Register Map .................................................................................................................................... p. 09

Register and Bit Descriptions ...................................................................................................................... p. 10

System Control Electrical Characteristics .................................................................................................... p. 14

Step-Down DC/DC Electrical Characteristics .............................................................................................. p. 15

Low-Noise LDO Electrical Characteristics ................................................................................................... p. 16

Typical Performance Characteristics ........................................................................................................... p. 17

System control information .......................................................................................................................... p. 22

Control Signals ................................................................................................................................. p. 22

Push-Button Control ......................................................................................................................... p. 23

Control Sequences ........................................................................................................................... p. 24

Functional Description ................................................................................................................................. p. 27

C Interface ..................................................................................................................................... p. 27

Voltage Monitor and Interrupt........................................................................................................... p. 27

Thermal Shutdown ........................................................................................................................... p. 27

Step-Down DC/DC Regulators .................................................................................................................... p. 28

General Description ......................................................................................................................... p. 28

100% Duty Cycle Operation ............................................................................................................. p. 28

Synchronous Rectification ................................................................................................................ p. 28

Soft-Start .......................................................................................................................................... p. 28

Compensation .................................................................................................................................. p. 28

Configuration Options ...................................................................................................................... p. 28

OK[ ] and Output Fault Interrupt ....................................................................................................... p. 29

PCB Layout Considerations ............................................................................................................. p. 29

Low-Noise, Low-Dropout Linear Regulators................................................................................................ p. 30

General Description ......................................................................................................................... p. 30

Output Current Limit ......................................................................................................................... p. 30

Compensation .................................................................................................................................. p. 30

Configuration Options ...................................................................................................................... p. 30

OK[ ] and Output Fault Interrupt ....................................................................................................... p. 30

PCB Layout Considerations ............................................................................................................. p. 31

TQFN44-32 Package Outline and Dimensions ........................................................................................... p. 32

Innovative Power

ActivePMU

is a trademark of Active-Semi.

is a trademark of NXP.

-2-

www.active-semi.com

ACT8892

Rev 2, 01-Jul-15

ORDERING INFORMATION



PART NUMBER

OUT1

STBY1



OUT2

STBY2

OUT3

STBY3

OUT4

OUT5

OUT6

OUT7

PACKAGE PINS

3.0V/3.0V 1.2V/0.95V 2.8V 3.3V 3.0V 1.5V TQFN44-32 32

2.5V

3.3V

1.5V 1.2V 1.8V 3.3V TQFN44-32 32

TEMPERATURE

RANGE

-40°C to +85°C

ACT8892Q4I134-T 1.8V/1.6V

ACT8892Q4I185-T

1.1V

:

All Active-Semi components are RoHS Compliant and with Pb-free plating unless specified differently. The term Pb-free means

semiconductor products that are in compliance with current RoHS (Restriction of Hazardous Substances) standards.

:

Standard product options are identified in this table. Contact factory for custom options, minimum order quantity is 12,000 units.

:

To select V

STBYx

as a output regulation voltage of REGx, drive VSEL to a logic high. The V

STBYx

can be set by software via I

interface, refer to appropriate sections of this datasheet for V

STBYx

setting.

ACT8892Q4I_ _ _-T

Active-Semi

Product Number

Package Code

Pin Count

Option Code

Tape and Reel

PIN CONFIGURATION

TOP VIEW

REFBP

SW1

SW2

VP1

GP1

GP2

VP2

NC2

OUT1

OUT4

OUT5

INL45

INL67

OUT6

OUT7

OUT2

VDDREF

SDA

SCL

ACT8892

VSEL

OUT3

NC1

PWREN

nIRQ

nPBSTAT

PWRHLD

nRSTO

nPBIN

GP3

SW3

Thin - QFN (TQFN44-32)

Innovative Power

-3-

www.active-semi.com

ActivePMU

is a trademark of Active-Semi.

is a trademark of NXP.

VP3

ACT8892

Rev 2, 01-Jul-15

FUNCTIONAL BLOCK DIAGRAM

VP1

To Battery

ACT8892

REG1

VDDREF

nPBIN

PUSH BUTTON

VIO

SW1

OUT1

GP1

VP2

nRSTO

SW2

To Battery

REG2

OUT2

GP2

VP3

SW3

VIO

nPBSTAT

VIO

nIRQ

To Battery

REG3

OUT3

GP3

System

Control

PWRHLD

PWREN

VSEL

SCL

SDA

VDDREF

To Battery

REFBP

Serial

Interface

INL45

OUT4

To Battery

REG4

LDO

REG5

LDO

OUT4

OUT5

INL67

OUT6

OUT7

To Battery

Reference

REG6

LDO

REG7

LDO

OUT7

Innovative Power

ActivePMU

is a trademark of Active-Semi.

is a trademark of NXP.

-4-

www.active-semi.com

ACT8892

Rev 2, 01-Jul-15

PIN DESCRIPTIONS

NAME

OUT1

OUT4

DESCRIPTION

Output Feedback Sense for REG1. Connect this pin directly to the output node to connect the

internal feedback network to the output voltage.

Analog Ground. Connect GA directly to a quiet ground node. Connect GA, GP1,GP2 and GP3

together at a single point as close to the IC as possible.

Output Voltage for REG4. Capable of delivering up to 320mA of output current. Connect a 3.3µF

ceramic capacitor from OUT4 to GA. The output is discharged to GA with 1.5kΩ resistor when

disabled.

Output Voltage for REG5. Capable of delivering up to 320mA of output current. Connect a 3.3µF

ceramic capacitor from OUT5 to GA. The output is discharged to GA with 1.5kΩ resistor when

disabled.

Power Input for REG4 and REG5. Bypass to GA with a high quality ceramic capacitor placed as

close to the IC as possible.

Power Input for REG6 and REG7. Bypass to GA with a high quality ceramic capacitor placed as

close to the IC as possible.

Output Voltage for REG6. Capable of delivering up to 320mA of output current. Connect a 3.3µF

ceramic capacitor from OUT6 to GA. The output is discharged to GA with 1.5kΩ resistor when

disabled.

Output Voltage for REG7. Capable of delivering up to 320mA of output current. Connect a 3.3µF

ceramic capacitor from OUT7 to GA. The output is discharged to GA with 1.5kΩ resistor when

disabled.

Master Enable Input. Drive nPBIN to GA through a 50kΩ resistor to enable the IC, drive nPBIN

directly to GA to assert a manual reset condition. Refer to the

nPBIN Multi-Function Input

section

for more information. nPBIN is internally pulled up to V

VDDREF

through a 35kΩ resistor.

Power Hold Input. Refer to the

Control Sequences

section for more information.

Active Low Reset Output. See the

nRSTO Output

section for more information.

Open-Drain Interrupt Output. nIRQ asserts any time an unmasked fault condition exists or an

interrupt occurs. See the

nIRQ Output

section for more information.

Active-Low Open-Drain Push-Button Status Output. nPBSTAT is asserted low whenever the

nPBIN is pushed, and is high-Z otherwise. See the

nPBSTAT Output

section for more information.

Power Ground for REG3. Connect GA, GP1, GP2, and GP3 together at a single point as close to

the IC as possible.

Switching Node Output for REG3. Connect this pin to the switching end of the inductor.

Power Input for REG3. Bypass to GP3 with a high quality ceramic capacitor placed as close to the

IC as possible.

Power Enable Input. Refer to the

Control Sequences

section for more information.

Not Connected. Not internally connected.

Output Feedback Sense for REG3. Connect this pin directly to the output node to connect the

internal feedback network to the output voltage.

Step-Down DC/DCs Output Voltage Selection. Drive to logic low to select default output voltage.

Drive to logic high to select secondary output voltage. See the

Output Voltage Programming

section for more information.

Clock Input for I

C Serial Interface.

Data Input for I

C Serial Interface. Data is read on the rising edge of SCL.

OUT5

INL45

INL67

OUT6

OUT7

nPBIN

PWRHLD

nRSTO

nIRQ

nPBSTAT

GP3

SW3

VP3

PWREN

NC1

OUT3

VSEL

SCL

SDA

Innovative Power

ActivePMU

is a trademark of Active-Semi.

is a trademark of NXP.

-5-

www.active-semi.com