Qorvo ACT88326 Manual

Advanced pmu with bypass switch, & pushbutton function

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BENEFITS and FEATURES
 Wide input voltage range
 Vin = 2.7V to 5.5V
 Complete integrated power solution
 One 4A DC/DC Step-Down with Bypass Mode
 Two 3A DC/DC Step-Down Regulators
 Two 300mA LDOs
 High Power Load Switch Gate Driver with Slew
Rate Control
 Space Savings
 Fully integrated
 High Fsw = 2.25MHz or 1.125MHz
 Integrated sequencing
 Standard PTH PCB Compatible Footprint
 Easy system level design
 Configurable sequencing
 Seamless sequencing with external supplies
 Programmable Reset and Power Good GPIO's
 Buck 1 Bypass Mode for 3.3V system level
compliance
 Highly configurable
 µP interface for status reporting and controllability
 Flexible Sequencing Options
 I2C Interface – 1MHz
 Multiple Sleep Modes
 See ACT88325 for non-Pushbutton Startup
APPLICATIONS
 Solid-State Drives
 Microcontroller Applications
 FPGA
 Personal Navigation Devices
Data Sheet Rev. 3.0, Nov. 11, 2019 | Subject to change without notice
(ES) Equipements Scientifiques SA - Département Composants & Modules - 127 rue de Buzenval BP 26 - 92380 Garches
Tél. 01 47 95 99 84 - Fax. 01 47 01 16 22 - e-mail: comp@es-france.com - Site Web: www.es-france.com
Advanced PMU with Bypass Switch,
 
GENERAL DESCRIPTION
The ACT88326 PMIC is an integrated ActivePMU™
power management unit. It is highly flexible and can be
reconfigured via I
need for PCB changes. The low external component
count and high configurability significantly speeds time
to market. Examples of configurable options include
output voltage, startup time, slew rate, system level
sequencing,
operating modes etc. The core of the device includes 3
DC/DC step down converters using integrated power
FETs, and 2 low-dropout regulators (LDOs). Each
regulator can be configured for a wide range of output
voltages through the I
ACT88326 is programmed at the factory with a default
configuration. The default settings can be optimized for
a specific design through the I
factory for specific default configurations.
The ACT88326 includes features that allow flexibility for
all system level configurations. The buck converter can
be reconfigured as a bypass switch. It also contains a
high power load switch controller. It's external power
supply enable and power good interface allows
seamless sequencing with external power supplies.
The ACT88326 PMIC is available in a 2.7 x 3 mm 36 pin
WLCSP package. The IC pinout is optimized to allow
standard, low-cost PTH PCB layouts.
1 of 45
ACT88326
& Pushbutton Function
2
C for multiple applications without the
switching
frequency,
sleep
C interface.
2
C interface. Contact the
2
www.qorvo.com
modes,

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Summary of Contents for Qorvo ACT88326

  • Page 1  µP interface for status reporting and controllability seamless sequencing with external power supplies.  Flexible Sequencing Options The ACT88326 PMIC is available in a 2.7 x 3 mm 36 pin  I2C Interface – 1MHz WLCSP package. The IC pinout is optimized to allow ...
  • Page 2 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function TYPICAL APPLICATION DIAGRAM BUCK1 4A 2.7V ~ 5.5V Input BUCK2 3A ACT88326 BUCK3 3A External LDO1 300mA DC/DC ENABLE LDO2 300mA PWREN nRESET www.qorvo.com 2 of 45 Data Sheet Rev. 3.0, Nov. 11, 2019 | Subject to change without notice (ES) Equipements Scientifiques SA - Département Composants &...
  • Page 3: Functional Block Diagram

    ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function FUNCTIONAL BLOCK DIAGRAM Push Button 50kΩ 1kΩ PushButton1/ PushButton2/ On/Off Manual Reset Input Rail 10µF FB_B1 IO Supply 1µH VIN_IO Buck1 SW_B1 Vref 1µF 2x22µF Controller FB_B1 Digital Digital PGND Core Controller GPIO1...
  • Page 4: Ordering Information

    ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function ORDERING INFORMATION PART NUMBER BUCK1 BUCK2 BUCK3 LDO1 LDO2 ACT88326VA102-T 0.85V 1.35V 3.0V 1.8V 3.0V ACT88326VA105-T 2.9V-5.5V 0.9V 1.2V 0.9V 1.1V 1.8V A CT883 26V Ax xx-T Product Number Package Code Pin Count Option Code Tape and Reel...
  • Page 5: Pin Configuration

    ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function PIN CONFIGURATION FB_B3 LDO1 AVIN LDO2 FB_B2 VIN_B3 VIN_B3 VIN_B2 VIN_B2 VIN_B2 SW_B3 SW_B2 SW_B2 SW_B2 SW_B3 PGND12 PGND12 PGND12 PGND3 SW_B1 SW_B1 SW_B1 AGND GPIO3 GPIO2 VIN_B1 VIN_B1 VIN_B1 GPIO1...
  • Page 6: Pin Descriptions

    ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function PIN DESCRIPTIONS NAME DESCRIPTION FB_B3 Feedback for Buck3 Regulator. Connect directly to the Buck3 output capacitor. LDO1 Output for LDO1 Regulator AVIN Dedicated VIN Power Input for LDO1 & LDO2 Regulators and Analog VIN Input...
  • Page 7: Absolute Maximum Ratings

    ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function ABSOLUTE MAXIMUM RATINGS PARAMETER VALUE UNIT All Pins to PGND12 unless stated otherwise below -0.3 to 6 VIN_xx to PGND12 -0.3 to 6 SW_Bx to PGND12 -0.3 to VIN_xx + 1 nPB to AGND -0.3 to AVIN + 0.3...
  • Page 8: Digital I/O Electrical Characteristics

    ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function DIGITAL I/O ELECTRICAL CHARACTERISTICS (VIN_IO = 5V, T = 25°C, unless otherwise specified.) PARAMETER TEST CONDITIONS UNIT GPIO1, GPIO2, GPIO4 Input Low VIN_IO = 1.8V 0.40 GPIO3 Input Low VIN_IO = 1.8V 0.25...
  • Page 9 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function SYSTEM CONTROL ELECTRICAL CHARACTERISTICS (VIN_IO = 5V, T = 25°C, unless otherwise specified.) PARAMETER TEST CONDITIONS UNIT Input Supply Voltage Range: AVIN referenced to AGND UVLO Threshold Falling UVLO Hysteresis System Monitor (SYSMON) Programmable...
  • Page 10 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function ONDLY=00 ONDLY=01 0.25 Startup Delay Programmable Range ONDLY=10 ONDLY=11 Turn Off Delay Programmable Range Configurable in 0.25ms steps 7.75 nRESET Programmable Range Configurable to 20, 40, 60 or 100ms. Note 1: All Under-voltage Lockout, Overvoltage measurements are referenced to the AVIN Input and AGND Pins.
  • Page 11 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function INTERNAL STEP-DOWN DC/DC ELECTRICAL CHARACTERISTICS REGULATOR: (BUCK1) (VIN = 5V, T = 25°C, unless otherwise specified.) PARAMETER CONDITIONS UNIT Input Operating Voltage Range Output Voltage Programming Range 1 See CMI section for programming details...
  • Page 12 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function INTERNAL STEP-DOWN DC/DC ELECTRICAL CHARACTERISTICS REGULATOR: (BUCK1) – BYPASS MODE (VIN = 3.3V, T = 25°C, unless otherwise specified.) PARAMETER CONDITIONS MAX UNIT Input Voltage for By-Pass Mode PMOS On-Resistance = -1A, VIN = 3.3V, Max=125°C at T 0.04...
  • Page 13 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function INTERNAL STEP-DOWN DC/DC ELECTRICAL CHARACTERISTICS REGULATOR: (BUCK2/3) (AVIN = VIN = 5V, T = 25°C, unless otherwise specified.) PARAMETER CONDITIONS UNIT Input Operating Voltage Range Buck2 Output Voltage Programming See CMI section for programming details...
  • Page 14 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function LDO1-2 ELECTRICAL CHARACTERISTICS (AVIN = VIN = 5V, T = 25°C, unless otherwise specified.) PARAMETER TEST CONDITIONS UNIT Operating Voltage Range LDO1 AVIN (Input Voltage) to the LDO1 Option 1 Configurable in 9.375mV steps 2.991...
  • Page 15 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function LDO2 LOAD SWITCH MODE ELECTRICAL CHARACTERISTICS – BYPASS MODE (AVIN = VIN = 5V, T = 25°C, unless otherwise specified.) PARAMETER TEST CONDITIONS UNIT Operating Voltage Range LDO2 AVIN (Input Voltage) to the LDO2 PMOS On-Resistance mΩ...
  • Page 16 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function C INTERFACE ELECTRICAL CHARACTERISTICS (VIN_IO = 1.8V, T = 25°C, unless otherwise specified.) PARAMETER TEST CONDITIONS UNIT SCL, SDA Input Low VIN_IO = 1.8V SCL, SDA Input High VIN_IO = 1.8V 1.25...
  • Page 17 GPIO configuration is specifically defined for each registers are lost when power is recycled. The default ACT88326 orderable part number. The first part of the values are fixed and cannot be changed by the factory datasheet describes basic IC functionality and default or the end user.
  • Page 18 Note that when the outputs turn back on during this transition, any outputs sequencing The ACT88326 enters POWER OFF at initial power on dependent on VIN will turn on immediately. Any outputs when input power is applied to the IC and VIN is within...
  • Page 19 DPSLP state then only the DPSLP register bit controls the entry and exit of the DPSLP state. Table 2a and 2b show the conditions to enter DPSLP state. ACT88326’s I C stays enabled in DPSLP state. The IC exits the DPSLP state when the conditions to enter DPSLP state are no longer present.
  • Page 20 Sequencing state and stays there indefinitely. This results in a very The ACT88326 provides the end user with extremely low power state. The IC starts up and sequences on the regulators when the user actively initiates a power on by...
  • Page 21 Each buck converter operates at its VOUT0 voltage in supply’s power good output and used as an input trigger normal operation and operates at its VOUT1 voltage for an ACT88326 supply. when the DVS input trigger is active. DVS can be implemented three ways.
  • Page 22: Fault Protection

    16 cycles after soft start or a UV/OV Input Voltage Monitoring (SYSMON) condition. The ACT88326 monitors the input voltage on the VINx 3. Any LDO regulator exceeding current limit for pins to ensure it is within specified limits for system more than 16uS after soft start or a UV/OV level operation.
  • Page 23 & Pushbutton Function nRESET Output Current Limit The ACT88326 provides a reset function to issue a The ACT88326 incorporates a three level overcurrent master reset to the system CPU/controller. nRESET is protection scheme for the buck converters and a single immediately asserted low when either the VIN voltage level scheme for the LDOs.
  • Page 24: Power Off

    Pin Descriptions Power Cycle1 – This sequence momentarily turns all outputs off and automatically restarts them. Initiate Many of the ACT88326 input and output pins are Power Cycle1 by momentarily pulling nPB to ground configurable via CMI configurations. The following through a 50kΩ...
  • Page 25: General Description

    AGND is the ground pin for the IC’s analog circuitry and LDOs. AGND must be connected to the IC’s PGNDx The ACT88326 has four GPIO pins. Each GPIO is pins. The connection between AGND and the PGNDx programmed for a specific function by the IC’s CMI. The pins should not have high currents flowing through it.
  • Page 26: Operating Mode

    All buck converters are capable of 100% duty cycle VSET0 in normal operation and by VSET1 in DVS mode. operation. During 100% duty cycle operation, the The ACT88326 has two output voltage programing high-side power MOSFETs are held on continuously, ranges.
  • Page 27 OVUV State, turns off all supplies, and restarts the system in 100ms. If a DC/DC's nFLTMSK[ ] bit is set to 1, the ACT88326 will interrupt the processor if the DC/DC's output voltage The buck converters also have built in current foldback falls below the power-OK threshold.
  • Page 28 Input Capacitor Selection Output Capacitor Selection Each buck converter has a dedicated input pin and The ACT88326 is designed to use small, low ESR, ceramic output capacitors. Buck1 typically requires power ground pin. Each buck converter should have a 2x22uF or a single 47uF output capacitor while Buck2 dedicated input capacitor that is optimally placed to and Buck3 require a 22uF output capacitor each.
  • Page 29 VSET register like the buck 3.3V rail with the programmed delay and softstart time. converters. The LDOs can be configured with two In bypass mode, the ACT88326 Buck 1 I C registers are different output voltage range settings. I C register bit reconfigured to the following.
  • Page 30: Load Switch

    POK bit will be 0. LDO2 can be configured as a load switch. When in load If an LDO's nFLTMSK[ ] bit is set to 1, the ACT88326 switch mode, the LDO passes the input voltage directly will interrupt the processor if that LDO’s output voltage...
  • Page 31 SW_Bx pin and the inductor. Optimal signal connections and routing from under the switch node routing is to run the trace between IC. Refer to the ACT88326 evaluation kit for a the input capacitor’s pads. Using 0805 sized full, detailed routing example.
  • Page 32 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function FB_B3 LDO1 AVIN LDO2 PWREN FB_B2 VIN_B3 VIN_B3 VIN_B2 VIN_B2 VIN_B2 SW_B3 SW_B2 SW_B2 SW_B2 SW_B3 PGND PGND PGND PGND SW_B1 SW_B1 SW_B1 AGND GPIO2 VIN_B1 VIN_B1 GPIO3 VIN_B1 VIN_IO FB_B1...
  • Page 33: Typical Operating Characteristics

    ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function TYPICAL OPERATING CHARACTERISTICS www.qorvo.com 33 of 45 Data Sheet Rev. 3.0, Nov. 11, 2019 | Subject to change without notice (ES) Equipements Scientifiques SA - Département Composants & Modules - 127 rue de Buzenval BP 26 - 92380 Garches...
  • Page 34 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function www.qorvo.com 34 of 45 Data Sheet Rev. 3.0, Nov. 11, 2019 | Subject to change without notice (ES) Equipements Scientifiques SA - Département Composants & Modules - 127 rue de Buzenval BP 26 - 92380 Garches...
  • Page 35 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function www.qorvo.com 35 of 45 Data Sheet Rev. 3.0, Nov. 11, 2019 | Subject to change without notice (ES) Equipements Scientifiques SA - Département Composants & Modules - 127 rue de Buzenval BP 26 - 92380 Garches...
  • Page 36 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function www.qorvo.com 36 of 45 Data Sheet Rev. 3.0, Nov. 11, 2019 | Subject to change without notice (ES) Equipements Scientifiques SA - Département Composants & Modules - 127 rue de Buzenval BP 26 - 92380 Garches...
  • Page 37 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function www.qorvo.com 37 of 45 Data Sheet Rev. 3.0, Nov. 11, 2019 | Subject to change without notice (ES) Equipements Scientifiques SA - Département Composants & Modules - 127 rue de Buzenval BP 26 - 92380 Garches...
  • Page 38 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function The following components have been used with the ACT88326. Reference Description Manufacturer Input Capacitor, Buck1 22uF, 10V, X5R Standard Input Capacitor, Buck2/3 22uF, 10V, X5R Standard Input Capacitor, LDO1/2 1uF, 10V, X5R...
  • Page 39 & Pushbutton Function CMI OPTIONS This section provides the basic default configuration settings for each available ACT88326 CMI option. IC functionality in this section supersedes functionality in the main datasheet. Generating the desired functionality for a custom CMI sometimes requires reassigning internal resources, resulting in removal of base IC functionality. The following sections attempt to describe any removed functionality from the base IC functionality.
  • Page 40: Sleep Mode

    100ms nRESET C Address The ACT88326 7-bit I C address is 0x25h. Use address 0x4Ah when writing and 0x4Bh when reading. GPIO1 (pin C7) – EXT_EN1 GPIO1 is configured as an open drain output to enable an external power supply. At power up, GPIO1 goes high when Buck1 goes high.
  • Page 41 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function DVS using a GPIOx input is disabled. However, each output’s voltage can be individually controlled by changing its VSET0 register contents via I VSYSMON VSYSMON = 3.6V Buck1 Voltage Setting Buck1 reference voltage is 0.8V. This sets the allowable voltage range between 0.8V and 3.998V in 12.5mV steps.
  • Page 42 Startup and Sequencing Startup and sequencing is fully controlled by an external uP. I2C Address The ACT88326 7-bit I C address is 0x25h. Use address 0x4Ah when writing and 0x4Bh when reading. GPIO1 (pin C7) – EXT_PG1 GPIO1 is configured as a GPIO input to control the Buck2 and LS1 outputs. When GPIO1 is L, these outputs are off.
  • Page 43 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function Buck1 Voltage Setting Buck1 reference voltage is 0.6V. This sets the allowable voltage range between 0.6V and 2.991V in 9.376mV steps. Buck2 Voltage Setting Buck2 reference voltage is 0.8V. This sets the allowable voltage range between 0.8V and 3.998V in 12.5mV steps.
  • Page 44 ACT88326 Advanced PMU with Bypass Switch, & Pushbutton Function PACKAGE OUTLINE AND DIMENSIONS Top View Bottom View Side View Notes www.qorvo.com 44 of 45 Data Sheet Rev. 3.0, Nov. 11, 2019 | Subject to change without notice (ES) Equipements Scientifiques SA - Département Composants & Modules - 127 rue de Buzenval BP 26 - 92380 Garches...
  • Page 45: Product Compliance

    Customers should obtain and verify the latest relevant information before placing orders for Qorvo products. The information contained herein or any use of such information does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other intellectual property rights, whether with regard to such information itself or anything described by such information.

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