EA8894

EA8894 Datasheet

Part	Datasheet
EA8894	EA8894 (pdf)

Related Parts	Information
ACT8894Q4I133-T	ACT8894Q4I133-T

PDF Datasheet Preview
ACT8894 Advanced PMU for Samsung S3C2416/S3C2450 • Optimized for Samsung S3C2416/S3C2450 Processors • Three Step-Down DC/DC Converters • Four Low-Dropout Linear Regulators • I2CTM Serial Interface • Advanced Enable/Disable Sequencing Controller • Minimal External Components • Tiny 4x4mm TQFN44-32 Package − 0.75mm Package Height − Pb-Free and RoHS Compliant The ACT8894 is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltagesequencing, and control requirements of the Samsung S3C2416/S3C2450 processors. This device features three step-down DC/DC converters and four low-noise, low-dropout linear regulators. The three DC/DC converters utilize a highefficiency, 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 900mA of output current, while the third supports up to 700mA. All four lowdropout linear regulators are high-performance, low-noise regulators that supply up to 150mA, 150mA, 250mA, and 250mA, respectively. The ACT8894 is available in a compact, Pb-Free and RoHS-compliant TQFN44-32 package. TYPICAL APPLICATION DIAGRAM Innovative PowerTM Active-Semi Authorized Recipients and Customers ActivePMUTM is trademark of Active-Semi. I2CTM is a trademark of NXP. Copyright 2013 Active-Semi, Inc. TABLE OF CONTENTS General Information 01 Functional Block 03 Ordering 04 Pin Configuration 04 Pin 05 Absolute Maximum Ratings 07 I2C Interface Electrical Characteristics 08 Global Register Map 09 Register and Bit Descriptions 10 System Control Electrical 13 Step-Down DC/DC Electrical Characteristics 14 Low-Noise LDO Electrical 15 Typical Performance 16 System control information 21 Interfacing with the Samsung 21 Control Signals 22 Push-Button 23 Control 23 Functional Description 25 I2C Interface 25 Voltage Monitor and 25 Thermal Shutdown 25 Step-Down DC/DC Regulators 26 General 26 100% Duty Cycle 26 Synchronous 26 Soft-Start 26 Compensation 26 Configuration 26 OK[ ] and Output Fault 27 PCB Layout Considerations 27 Low-Noise, Low-Dropout Linear 28 General 28 Output Current Limit 28 Compensation 28 Configuration 28 OK[ ] and Output Fault 28 PCB Layout Considerations 28 TQFN44-32 Package Outline and Dimensions 30 Innovative PowerTM Active-Semi Authorized Recipients and Customers ActivePMUTM is trademark of Active-Semi. I2CTM is a trademark of NXP. Copyright 2013 Active-Semi, Inc. FUNCTIONAL BLOCK DIAGRAM PUSH BUTTON nPBIN OUT1 nRSTO VDDREF OUT1 nPBSTAT OUT1 nIRQ PWRHLD PWREN VSEL To Battery SDA VDDREF REFBP GA EP Serial Interface Reference ACT8894 System Control REG4 LDO REG5 LDO REG6 LDO REG7 LDO VP1 SW1 OUT1 GP1 VP2 SW2 OUT2 GP2 VP3 SW3 OUT3 GP3 INL45 OUT4 OUT5 INL67 OUT6 OUT7 To Battery OUT1 To Battery OUT2 To Battery OUT3 ORDERING INFORMATION VOUT1/VSTBY1 VOUT2/VSTBY2 VOUT3/VSTBY3 VOUT4 VOUT5 VOUT6 VOUT7 PACKAGE PINS TEMPERATURE RANGE ACT8894Q4I133-T 3.3V/3.3V 1.8V/1.8V 1.3V/1.3V 1.2V 1.2V 1.2V 3.3V TQFN44-32 -40°C to +85°C All Active-Semi components are RoHS Compliant and with Pb-free plating unless otherwise specified. Standard product options are listed in this table. Contact factory for custom options, minimum order quantity is 12,000 units. To select VSTBYx as the output regulation voltage for REGx, drive VSEL to a logic high. VSTBYx can be set by software via I2C interface. Refer to appropriate sections of this datasheet for VSTBYx setting. PIN CONFIGURATION TOP VIEW REFBP VP1 SW1 GP1 GP2 SW2 VP2 NC2 nPBIN PWRHLD nRSTO nIRQ nPBSTAT GP3 SW3 VP3 Thin - QFN TQFN44-32 Innovative PowerTM Active-Semi Authorized Recipients and Customers ActivePMUTM is trademark of Active-Semi. I2CTM is a trademark of NXP. Copyright 2013 Active-Semi, Inc. PIN DESCRIPTIONS PIN NAME OUT1 Output Feedback Sense for REG1. 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. OUT4 REG4 output. Capable of delivering up to 150mA of output current. Connect a 1.5µF ceramic capacitor from OUT4 to GA. The output is discharged to GA with resistor when disabled. OUT5 REG5 output. Capable of delivering up to 150mA of output current. Connect a 1.5µF ceramic capacitor from OUT5 to GA. The output is discharged to GA with resistor when disabled. INL45 Power Input for REG4 and REG5. Bypass to GA with a high quality ceramic capacitor placed as close to the IC as possible. INL67 Power Input for REG6 and REG7. Bypass to GA with a high quality ceramic capacitor placed as close to the IC as possible. OUT6 REG6 output. Capable of delivering up to 250mA of output current. Connect a 2.2µF ceramic capacitor from OUT6 to GA. The output is discharged to GA with resistor when disabled. OUT7 REG7 output. Capable of delivering up to 250mA of output current. Connect a 2.2µF ceramic capacitor from OUT7 to GA. The output is discharged to GA with resistor when disabled. Master Enable Input. Drive nPBIN to GA through a resistor to enable the IC, drive nPBIN 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 VVDDREF through a resistor. 10 PWRHLD Power Hold Input. Refer to the Control Sequences section for more information. 11 nRSTO Active Low Reset Output. See the nRSTO Output section for more information. VNOM refers to the nominal output voltage level for VOUT as defined by the Ordering Information section. 2 IMAX Maximum Output Current. MAX 90 1% 2% UNIT V mV µA µA %/V %/mA %VNOM %VNOM MHz kHz µs ns A µA A µA A µA Innovative PowerTM - 14 - Active-Semi Authorized Recipients and Customers ActivePMUTM is trademark of Active-Semi. I2CTM is a trademark of NXP. Copyright 2013 Active-Semi, Inc. LOW-NOISE LDO ELECTRICAL CHARACTERISTICS VINL = 3.6V, COUT4 = COUT5 = 1.5µF, COUT6 = COUT7 = 2.2µF, LOWIQ[ ] = [0], TA = 25°C, unless otherwise specified. PARAMETER TEST CONDITIONS MIN TYP MAX Operating Voltage Range Output Voltage Accuracy Line Regulation Load Regulation Power Supply Rejection Ratio VOUT 1.2V, TA = 25°C, IOUT = 10mA VOUT < 1.2V, TA = 25°C, IOUT = 10mA VINL = Max VOUT + 0.5V, 3.6V to 5.5V LOWIQ[ ] = [0] VINL = Max VOUT + 0.5V, 3.6V to 5.5V LOWIQ[ ] = [1] IOUT = 1mA to IMAX2 f = 1kHz, IOUT = 20mA, VOUT =1.2V f = 10kHz, IOUT = 20mA, VOUT =1.2V Regulator Enabled, LOWIQ[ ] = [0] VNOM VNOM Supply Current per Output Regulator Enabled, LOWIQ[ ] = [1] Regulator Disabled Soft-Start Period VOUT = 2.9V Power Good Threshold VOUT Rising Power Good Hysteresis VOUT Falling Output Noise IOUT = 20mA, f = 10Hz to 100kHz, VOUT = 1.2V Discharge Resistance LDO Disabled, DIS[ ] = 1 REG4 Dropout Voltage Maximum Output Current VNOM refers to the nominal output voltage level for VOUT as defined by the Ordering Information section. 2 IMAX Maximum Output Current. 3 Dropout Voltage is defined as the differential voltage between input and output when the output voltage drops 100mV below the regulation voltage for 3.1V output voltage or higher LDO current limit is defined as the output current at which the output voltage drops to 95% of the respective regulation voltage. Under heavy overload conditions the output current limit folds back by 30% typ Innovative PowerTM - 15 - Active-Semi Authorized Recipients and Customers ActivePMUTM is trademark of Active-Semi. I2CTM is a trademark of NXP. Copyright 2013 Active-Semi, Inc. TYPICAL PERFORMANCE CHARACTERISTICS VVP1 = VVP2 = VVP3 = 3.6V, TA = 25°C, unless otherwise specified. ACT8894-002 VREF % Frequency % VREF vs. Temperature -40 -20 Typical VREF=1.2V 0 20 40 60 80 100 120 Temperature °C ACT8894-001 -1 -40 Frequency vs. Temperature Typical Oscillator Frequency=2MHz 60 80 85 Temperature °C ACT8894-004 nPBIN Startup Sequence CH3 CH1 VOUT1, 2V/div CH2 VOUT2, 1V/div CH3 VOUT5, 1V/div CH4 VnPBIN, 2V/div TIME 1ms/div ACT8894-003 PWRHLD Startup Sequence CH1 CH2 CH3 CH1 VOUT1, 2V/div CH2 VOUT2, 2V/div CH3 VOUT5, 1V/div CH4 VPWRHLD, 2V/div TIME 2ms/div PWREN Sequence ACT8894-005 CH1 VPWREN, 2V/div CH3 VOUT3, 1V/div CH4 VOUT4, 1V/div TIME 1ms/div Innovative PowerTM - 16 - Active-Semi Authorized Recipients and Customers ActivePMUTM is trademark of Active-Semi. I2CTM is a trademark of NXP. Copyright 2013 Active-Semi, Inc. TYPICAL PERFORMANCE CHARACTERISTICS CONT’D

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ACT8894

Advanced PMU for Samsung S3C2416/S3C2450
• Optimized for Samsung S3C2416/S3C2450

Processors
• Three Step-Down DC/DC Converters
• Four Low-Dropout Linear Regulators
• I2CTM Serial Interface
• Advanced Enable/Disable Sequencing Controller
• Minimal External Components
• Tiny 4x4mm TQFN44-32 Package
− 0.75mm Package Height − Pb-Free and RoHS Compliant

The ACT8894 is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltagesequencing, and control requirements of the Samsung S3C2416/S3C2450 processors.

This device features three step-down DC/DC converters and four low-noise, low-dropout linear regulators.

The three DC/DC converters utilize a highefficiency, 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 900mA of output current, while the third supports up to 700mA. All four lowdropout linear regulators are high-performance, low-noise regulators that supply up to 150mA, 150mA, 250mA, and 250mA, respectively.

The ACT8894 is available in a compact, Pb-Free and RoHS-compliant TQFN44-32 package.

TYPICAL APPLICATION DIAGRAM

Innovative PowerTM

Active-Semi Authorized Recipients and Customers

ActivePMUTM is trademark of Active-Semi.

I2CTM is a trademark of NXP.

Copyright 2013 Active-Semi, Inc.

TABLE OF CONTENTS
General Information 01 Functional Block 03 Ordering 04 Pin Configuration 04 Pin 05 Absolute Maximum Ratings 07 I2C Interface Electrical Characteristics 08 Global Register Map 09 Register and Bit Descriptions 10 System Control Electrical 13 Step-Down DC/DC Electrical Characteristics 14 Low-Noise LDO Electrical 15 Typical Performance 16

System control information 21 Interfacing with the Samsung 21 Control Signals 22 Push-Button 23 Control 23

Functional Description 25 I2C Interface 25 Voltage Monitor and 25 Thermal Shutdown 25

Step-Down DC/DC Regulators 26 General 26 100% Duty Cycle 26 Synchronous 26 Soft-Start 26 Compensation 26 Configuration 26 OK[ ] and Output Fault 27 PCB Layout Considerations 27

Low-Noise, Low-Dropout Linear 28 General 28 Output Current Limit 28 Compensation 28 Configuration 28 OK[ ] and Output Fault 28 PCB Layout Considerations 28

TQFN44-32 Package Outline and Dimensions 30

Innovative PowerTM

Active-Semi Authorized Recipients and Customers

ActivePMUTM is trademark of Active-Semi.

I2CTM is a trademark of NXP.

Copyright 2013 Active-Semi, Inc.

FUNCTIONAL BLOCK DIAGRAM

PUSH BUTTON
nPBIN

OUT1
nRSTO

VDDREF

OUT1 nPBSTAT

OUT1 nIRQ

PWRHLD

PWREN

VSEL

To Battery

SDA VDDREF

REFBP

GA EP

Serial Interface

Reference

ACT8894

System Control

REG4 LDO

REG5 LDO

REG6 LDO

REG7 LDO

VP1 SW1 OUT1 GP1 VP2 SW2 OUT2 GP2 VP3 SW3 OUT3 GP3 INL45 OUT4

OUT5

INL67 OUT6

OUT7

To Battery OUT1

To Battery OUT2

To Battery OUT3
ORDERING INFORMATION

VOUT1/VSTBY1

VOUT2/VSTBY2 VOUT3/VSTBY3 VOUT4 VOUT5 VOUT6 VOUT7

PACKAGE PINS

TEMPERATURE RANGE

ACT8894Q4I133-T 3.3V/3.3V 1.8V/1.8V 1.3V/1.3V 1.2V 1.2V 1.2V 3.3V TQFN44-32 -40°C to +85°C

All Active-Semi components are RoHS Compliant and with Pb-free plating unless otherwise specified.

Standard product options are listed in this table. Contact factory for custom options, minimum order quantity is 12,000 units. To select VSTBYx as the output regulation voltage for REGx, drive VSEL to a logic high. VSTBYx can be set by software via I2C interface. Refer to appropriate sections of this datasheet for VSTBYx setting.

PIN CONFIGURATION

TOP VIEW

REFBP VP1 SW1 GP1 GP2 SW2 VP2 NC2
nPBIN PWRHLD
nRSTO nIRQ
nPBSTAT GP3 SW3 VP3

Thin - QFN TQFN44-32

Innovative PowerTM

Active-Semi Authorized Recipients and Customers

ActivePMUTM is trademark of Active-Semi.

I2CTM is a trademark of NXP.

Copyright 2013 Active-Semi, Inc.

PIN DESCRIPTIONS

PIN NAME

OUT1 Output Feedback Sense for REG1.

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.

OUT4

REG4 output. Capable of delivering up to 150mA of output current. Connect a 1.5µF ceramic capacitor from OUT4 to GA. The output is discharged to GA with resistor when disabled.

OUT5

REG5 output. Capable of delivering up to 150mA of output current. Connect a 1.5µF ceramic capacitor from OUT5 to GA. The output is discharged to GA with resistor when disabled.

INL45

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

INL67

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

OUT6

REG6 output. Capable of delivering up to 250mA of output current. Connect a 2.2µF ceramic capacitor from OUT6 to GA. The output is discharged to GA with resistor when disabled.

OUT7

REG7 output. Capable of delivering up to 250mA of output current. Connect a 2.2µF ceramic capacitor from OUT7 to GA. The output is discharged to GA with resistor when disabled.

Master Enable Input. Drive nPBIN to GA through a resistor to enable the IC, drive nPBIN
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 VVDDREF through a resistor.
10 PWRHLD Power Hold Input. Refer to the Control Sequences section for more information.
11 nRSTO Active Low Reset Output. See the nRSTO Output section for more information.
VNOM refers to the nominal output voltage level for VOUT as defined by the Ordering Information section. 2 IMAX Maximum Output Current.

MAX 90 1% 2%

UNIT V mV µA µA
%/V %/mA %VNOM %VNOM MHz kHz
µs ns

A µA

A µA

A µA

Innovative PowerTM
- 14 -

Active-Semi Authorized Recipients and Customers

ActivePMUTM is trademark of Active-Semi.

I2CTM is a trademark of NXP.

Copyright 2013 Active-Semi, Inc.

LOW-NOISE LDO ELECTRICAL CHARACTERISTICS

VINL = 3.6V, COUT4 = COUT5 = 1.5µF, COUT6 = COUT7 = 2.2µF, LOWIQ[ ] = [0], TA = 25°C, unless otherwise specified.

PARAMETER

TEST CONDITIONS

MIN TYP MAX

Operating Voltage Range

Output Voltage Accuracy

Line Regulation Load Regulation Power Supply Rejection Ratio

VOUT 1.2V, TA = 25°C, IOUT = 10mA VOUT < 1.2V, TA = 25°C, IOUT = 10mA VINL = Max VOUT + 0.5V, 3.6V to 5.5V LOWIQ[ ] = [0]

VINL = Max VOUT + 0.5V, 3.6V to 5.5V LOWIQ[ ] = [1] IOUT = 1mA to IMAX2 f = 1kHz, IOUT = 20mA, VOUT =1.2V f = 10kHz, IOUT = 20mA, VOUT =1.2V Regulator Enabled, LOWIQ[ ] = [0]

VNOM

VNOM

Supply Current per Output

Regulator Enabled, LOWIQ[ ] = [1]

Regulator Disabled

Soft-Start Period

VOUT = 2.9V

Power Good Threshold

VOUT Rising

Power Good Hysteresis

VOUT Falling

Output Noise

IOUT = 20mA, f = 10Hz to 100kHz, VOUT = 1.2V

Discharge Resistance

LDO Disabled, DIS[ ] = 1

REG4

Dropout Voltage Maximum Output Current
VNOM refers to the nominal output voltage level for VOUT as defined by the Ordering Information section. 2 IMAX Maximum Output Current.
3 Dropout Voltage is defined as the differential voltage between input and output when the output voltage drops 100mV below the regulation voltage for 3.1V output voltage or higher

LDO current limit is defined as the output current at which the output voltage drops to 95% of the respective regulation voltage. Under heavy overload conditions the output current limit folds back by 30% typ

Innovative PowerTM
- 15 -

Active-Semi Authorized Recipients and Customers

ActivePMUTM is trademark of Active-Semi.

I2CTM is a trademark of NXP.

Copyright 2013 Active-Semi, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS

VVP1 = VVP2 = VVP3 = 3.6V, TA = 25°C, unless otherwise specified.

ACT8894-002

VREF % Frequency %

VREF vs. Temperature
-40 -20

Typical VREF=1.2V
0 20 40 60 80 100 120

Temperature °C

ACT8894-001
-1 -40

Frequency vs. Temperature

Typical Oscillator Frequency=2MHz
60 80 85

Temperature °C

ACT8894-004
nPBIN Startup Sequence

CH3 CH1 VOUT1, 2V/div CH2 VOUT2, 1V/div CH3 VOUT5, 1V/div CH4 VnPBIN, 2V/div TIME 1ms/div

ACT8894-003

PWRHLD Startup Sequence

CH1 CH2

CH3 CH1 VOUT1, 2V/div CH2 VOUT2, 2V/div CH3 VOUT5, 1V/div CH4 VPWRHLD, 2V/div TIME 2ms/div

PWREN Sequence

ACT8894-005

CH1 VPWREN, 2V/div CH3 VOUT3, 1V/div CH4 VOUT4, 1V/div TIME 1ms/div

Innovative PowerTM
- 16 -

Active-Semi Authorized Recipients and Customers

ActivePMUTM is trademark of Active-Semi.

I2CTM is a trademark of NXP.

Copyright 2013 Active-Semi, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS CONT’D

More datasheets: 208447048001001 | 208447048005025 | 168447032001025 | 208447032005025 | 208447048006025 | 108447032001037 | 208447032006025 | 108447048001025 | 108447032001025 | 208447032003025

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Datasheet ID: EA8894 522650