ACT8891Q4I133-T

ACT8891Q4I133-T Datasheet

ACT8891

Part	Datasheet
ACT8891Q4I133-T	ACT8891Q4I133-T (pdf)

Related Parts	Information
EA8891	EA8891

PDF Datasheet Preview
ACT8891 Advanced PMU for Rockchip RK2918 Processor • Optimized for Rockchip RK2918 Processor • 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 ACT8891 is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltagesequencing, and control requirements of the Rockchip RK2918 processor. 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 1150mA of output current, while the third supports up to 1300mA. All four low-dropout linear regulators are highperformance, low-noise, regulators that support up to 320mA. The ACT8891 is available in a compact, Pb-Free and RoHS-compliant TQFN44-32 package. SYSTEM BLOCK DIAGRAM Innovative PowerTM Active-Semi Authorized Recipients and Customers ActivePMUTM is a 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 Rockchip RK2918 21 Control Signals 22 Push-Button 22 Control 22 Functional Description 24 I2C Interface 24 Voltage Monitor and 24 Thermal Shutdown 24 Step-Down DC/DC Regulators 25 General 25 100% Duty Cycle 25 Synchronous 25 Soft-Start 25 Compensation 25 Configuration 25 OK[ ] and Output Fault 26 PCB Layout Considerations 26 Low-Noise, Low-Dropout Linear 27 General 27 Output Current Limit 27 Compensation 27 Configuration 27 OK[ ] and Output Fault 27 PCB Layout Considerations 27 TQFN44-32 Package Outline and Dimensions 29 Innovative PowerTM Active-Semi Authorized Recipients and Customers ActivePMUTM is a 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 To Battery VSEL SCL SDA VDDREF REFBP GA EP Serial Interface Reference ACT8891 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 To Battery OUT4 OUT5 To Battery OUT6 OUT7 Innovative PowerTM ORDERING INFORMATION VOUT1 VOUT2 VOUT3/VSTBY3 VOUT4 VOUT5 VOUT6 VOUT7 PACKAGE PINS TEMPERATURE RANGE ACT8891Q4I133-T 3.0V 1.5V 1.2V/1.2V 1.8V 1.2V 3.3V 2.5V TQFN44-32 -40°C to +85°C 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 VSTBYx as a output regulation voltage of REGx, drive VSEL to a logic high. The 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 NC3 nPBIN PWRHLD nRSTO nIRQ nPBSTAT GP3 SW3 VP3 Thin - QFN TQFN44-32 Innovative PowerTM Active-Semi Authorized Recipients and Customers ActivePMUTM is a 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. 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 OUT4 ceramic capacitor from OUT4 to GA. The output is discharged to GA with resistor when disabled. Output Voltage for REG5. Capable of delivering up to 320mA of output current. Connect a 3.3µF OUT5 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. VNOM refers to the nominal output voltage level for VOUT as defined by the Ordering Information section. 2 IMAX Maximum Output Current. Innovative PowerTM - 14 - Active-Semi Authorized Recipients and Customers ActivePMUTM is a 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 Operating Voltage Range Output Voltage Accuracy Line Regulation Load Regulation Power Supply Rejection Ratio Supply Current per Output Soft-Start Period Power Good Threshold Power Good Hysteresis Output Noise Discharge Resistance REG4 Dropout Voltage Maximum Output Current Limit Stable COUT4 Range REG5 Dropout Voltage Maximum Output Current Limit Stable COUT5 Range REG6 Dropout Voltage Maximum Output Current Limit Stable COUT6 Range REG7 Dropout Voltage Maximum Output Current Limit Stable COUT7 Range TEST CONDITIONS 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] Regulator Enabled, LOWIQ[ ] = [1] Regulator Disabled VOUT = 2.9V VOUT Rising VOUT Falling IOUT = 20mA, f = 10Hz to 100kHz, VOUT = 1.2V LDO Disabled, DIS[ ] = 1 IOUT = 160mA, VOUT > 3.1V VOUT = 95% of regulation voltage IOUT = 160mA, VOUT > 3.1V VOUT = 95% of regulation voltage IOUT = 160mA, VOUT > 3.1V VOUT = 95% of regulation voltage IOUT = 160mA, VOUT > 3.1V VOUT = 95% of regulation voltage MIN TYP MAX UNIT VNOM VNOM mV/V 75 dB µVRMS 140 280 mV 140 280 mV 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 a 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. ACT8891-002 VREF % Frequency % VREF vs. Temperature -40 -20 Typical VREF=1.2V 0 20 40 60 80 100 120 Temperature °C ACT8891-001 -1 -40 Frequency vs. Temperature Typical Oscillator Frequency=2MHz 60 80 85 Temperature °C ACT8891-003 nPBIN Startup Sequence CH6 CH1 VnPBIN, 2V/div CH2 VOUT1, 2V/div CH3 VOUT2, 1V/div CH4 VOUT3, 1V/div CH5 VOUT4, 2V/div CH6 VOUT5, 1V/div TIME 5ms/div PWRHLD Startup Sequence ACT8891-005 CH1 VPWRHLD, 5V/div CH2 VOUT1, 2V/div CH3 VOUT2, 1V/div CH4 VOUT3, 1V/div CH5 VOUT4, 2V/div CH6 VOUT5, 1V/div TIME 5ms/div Innovative PowerTM - 16 - Active-Semi Authorized Recipients and Customers ActivePMUTM is a trademark of Active-Semi. I2CTM is a trademark of NXP. nPBIN Startup Sequence CH6 CH1 VnPBIN, 2V/div CH2 VOUT1, 2V/div CH3 VOUT2, 1V/div CH4 VOUT3, 1V/div CH5 VOUT6, 2V/div CH6 VOUT7, 2V/div TIME 5ms/div PWRHLD Startup Sequence CH2 CH3 CH6 CH1 VPWRHLD, 5V/div CH2 VOUT1, 2V/div CH3 VOUT2, 1V/div CH4 VOUT3, 1V/div CH5 VOUT6, 2V/div CH6 VOUT7, 2V/div TIME 5ms/div Copyright 2013 Active-Semi, Inc.

PDF Datasheet Preview

ACT8891

Advanced PMU for Rockchip RK2918 Processor
• Optimized for Rockchip RK2918 Processor
• 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 ACT8891 is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltagesequencing, and control requirements of the Rockchip RK2918 processor.

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 1150mA of output current, while the third supports up to 1300mA. All four low-dropout linear regulators are highperformance, low-noise, regulators that support up to 320mA.

The ACT8891 is available in a compact, Pb-Free and RoHS-compliant TQFN44-32 package.

SYSTEM BLOCK DIAGRAM

Innovative PowerTM

Active-Semi Authorized Recipients and Customers

ActivePMUTM is a 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 Rockchip RK2918 21 Control Signals 22 Push-Button 22 Control 22

Functional Description 24 I2C Interface 24 Voltage Monitor and 24 Thermal Shutdown 24

Step-Down DC/DC Regulators 25 General 25 100% Duty Cycle 25 Synchronous 25 Soft-Start 25 Compensation 25 Configuration 25 OK[ ] and Output Fault 26 PCB Layout Considerations 26

Low-Noise, Low-Dropout Linear 27 General 27 Output Current Limit 27 Compensation 27 Configuration 27 OK[ ] and Output Fault 27 PCB Layout Considerations 27

TQFN44-32 Package Outline and Dimensions 29

Innovative PowerTM

Active-Semi Authorized Recipients and Customers

ActivePMUTM is a 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

To Battery

VSEL SCL SDA VDDREF

REFBP

GA EP

Serial Interface

Reference

ACT8891

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

To Battery OUT4 OUT5 To Battery OUT6 OUT7

Innovative PowerTM
ORDERING INFORMATION

VOUT1

VOUT2 VOUT3/VSTBY3

VOUT4

VOUT5

VOUT6

VOUT7

PACKAGE

PINS

TEMPERATURE RANGE

ACT8891Q4I133-T 3.0V 1.5V 1.2V/1.2V 1.8V 1.2V 3.3V 2.5V TQFN44-32 -40°C to +85°C

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 VSTBYx as a output regulation voltage of REGx, drive VSEL to a logic high. The 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 NC3
nPBIN PWRHLD
nRSTO nIRQ
nPBSTAT GP3 SW3 VP3

Thin - QFN TQFN44-32

Innovative PowerTM

Active-Semi Authorized Recipients and Customers

ActivePMUTM is a 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. 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

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

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

OUT5 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.
VNOM refers to the nominal output voltage level for VOUT as defined by the Ordering Information section. 2 IMAX Maximum Output Current.

Innovative PowerTM
- 14 -

Active-Semi Authorized Recipients and Customers

ActivePMUTM is a 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 Operating Voltage Range

Output Voltage Accuracy

Line Regulation

Load Regulation

Power Supply Rejection Ratio

Supply Current per Output

Soft-Start Period Power Good Threshold Power Good Hysteresis Output Noise Discharge Resistance REG4 Dropout Voltage Maximum Output Current Limit Stable COUT4 Range REG5 Dropout Voltage Maximum Output Current Limit Stable COUT5 Range REG6 Dropout Voltage Maximum Output Current Limit Stable COUT6 Range REG7 Dropout Voltage Maximum Output Current Limit Stable COUT7 Range

TEST CONDITIONS

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] Regulator Enabled, LOWIQ[ ] = [1] Regulator Disabled VOUT = 2.9V VOUT Rising VOUT Falling IOUT = 20mA, f = 10Hz to 100kHz, VOUT = 1.2V LDO Disabled, DIS[ ] = 1

IOUT = 160mA, VOUT > 3.1V

VOUT = 95% of regulation voltage

IOUT = 160mA, VOUT > 3.1V

VOUT = 95% of regulation voltage

IOUT = 160mA, VOUT > 3.1V

VOUT = 95% of regulation voltage

IOUT = 160mA, VOUT > 3.1V

VOUT = 95% of regulation voltage

MIN TYP MAX UNIT

VNOM

VNOM
mV/V
75 dB
µVRMS
140 280 mV
140 280 mV
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 a 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.

ACT8891-002

VREF % Frequency %

VREF vs. Temperature
-40 -20

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

Temperature °C

ACT8891-001
-1 -40

Frequency vs. Temperature

Typical Oscillator Frequency=2MHz
60 80 85

Temperature °C

ACT8891-003
nPBIN Startup Sequence

CH6 CH1 VnPBIN, 2V/div CH2 VOUT1, 2V/div CH3 VOUT2, 1V/div CH4 VOUT3, 1V/div CH5 VOUT4, 2V/div CH6 VOUT5, 1V/div TIME 5ms/div

PWRHLD Startup Sequence

ACT8891-005

CH1 VPWRHLD, 5V/div CH2 VOUT1, 2V/div CH3 VOUT2, 1V/div CH4 VOUT3, 1V/div CH5 VOUT4, 2V/div CH6 VOUT5, 1V/div TIME 5ms/div

Innovative PowerTM
- 16 -

Active-Semi Authorized Recipients and Customers

ActivePMUTM is a trademark of Active-Semi.

I2CTM is a trademark of NXP.
nPBIN Startup Sequence

CH6 CH1 VnPBIN, 2V/div CH2 VOUT1, 2V/div CH3 VOUT2, 1V/div CH4 VOUT3, 1V/div CH5 VOUT6, 2V/div CH6 VOUT7, 2V/div TIME 5ms/div

PWRHLD Startup Sequence

CH2 CH3

CH6 CH1 VPWRHLD, 5V/div CH2 VOUT1, 2V/div CH3 VOUT2, 1V/div CH4 VOUT3, 1V/div CH5 VOUT6, 2V/div CH6 VOUT7, 2V/div TIME 5ms/div

Copyright 2013 Active-Semi, Inc.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ACT8891Q4I133-T Datasheet file may be downloaded here without warranties.

Datasheet ID: ACT8891Q4I133-T 522629