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LM3880

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3 Rail Simple Power Sequencer with Fixed Time Delay

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3 Rail Simple Power Sequencer with Fixed Time Delay

LM3880

ACTIVE
Data sheet Order now

Product details

Parameters

VCC (Min) (V) 2.7 VCC (Max) (V) 5.5 Iq (Typ) (uA) 25 Time delay (ms) 2, 10, 16, 30, 60, 120 Number of sequenced outputs 3 Rating Catalog open-in-new Find other Sequencers

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 open-in-new Find other Sequencers

Features

  • Qualified for Automotive Applications
  • Simple Solution for Sequencing 3 Voltage Rails from a Single Input Signal
  • Easily Cascade up to 3 Devices to Sequence as Many as 9 Voltage Rails
  • Power-Up and Power-Down Control
  • Tiny 2.9-mm x 1.9-mm Footprint
  • Low Quiescent Current of 25 µA
  • Input Voltage Range of 2.7 V to 5.5 V
  • Standard Timing Options Available

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Description

The LM3880 simple power supply sequencer offers the easiest method to control power up sequencing and power down sequencing of multiple Independent voltage rails. By staggering the startup sequence, it is possible to avoid latch conditions or large in-rush currents that can affect the reliability of the system.

Available in a 6-pin SOT-23-6 package, the Simple Sequencer contains a precision enable pin and three open-drain output flags. The open-drain output flags permit that they can be pulled up to distinct voltage supplies separate from the sequencer VDD (so long as they do not exceed the recommended maximum voltage of 0.3V greater than VDD), so as to interface with ICs requiring a range of different enable signals. When the LM3880 is enabled, the three output flags will sequentially release, after individual time delays, thus permitting the connected power supplies to start up. The output flags will follow a reverse sequence during power down to avoid latch conditions.

EPROM capability allows every delay and sequence to be fully adjustable. Contact Texas Instruments if a nonstandard configuration is required.

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Technical documentation

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Type Title Date
* Datasheet LM3880 Three-Rail Simple Power Sequencer datasheet (Rev. L) Nov. 12, 2018
Application notes High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision Aug. 05, 2019
Application notes Creating a Sequencing Voltage Supervisor (Reset IC) Using TPS386000 and LM3880 May 14, 2019
Technical articles How to manage processor power during uncontrolled power off Jun. 21, 2018
Technical articles FPGA power made simple: sequencing Nov. 13, 2017
Technical articles Sequencing solutions: simple, reliable and cost-effective Sep. 27, 2017
Technical articles Sequencing and managing multiple power rails in a system: common questions answered Feb. 01, 2017
Application notes Analog Applications Journal 4Q 2014 Oct. 24, 2014
Application notes Power-supply sequencing for FPGAs Oct. 24, 2014
Selection guides Power Management for Xilinx FPGAs Feb. 04, 2014
User guides AN-1491 LM3880 Power Sequencer Demo Board (Rev. A) May 07, 2013
Application notes LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A) May 05, 2013
Application notes AN-1603 LM274X Reference Designs (Rev. C) May 01, 2013
Application notes Power Supply Design Considerations for Modern FPGAs (Power Designer 121) Feb. 02, 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
Power Sequencer
LM3880EVAL
document-generic User guide
$25.00
Description

LM3880 Power Sequencer

Features
  • Easiest method to sequence rails
  • Power up and power down control
  • Input voltage range of 2.7V to 5.5V
  • Small footprint SOT23-6
  • Low quiescent current of 20 mA
  • Standard timing options available
  • Customization of timing and sequence available through factory programmability

Applications:

  • Multiple supply (...)
View details

Design tools & simulation

SIMULATION MODELS Download
SNVMBB4.ZIP (45 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Compact, efficient, 24-V input auxiliary power supply reference design for servo drives
TIDA-010009 — This reference design showcases a method to generate power supplies required in a servo or AC drive including the analog and digtal I/O interfaces, encoder supply, isolated transceivers and digital processing block. This design also implements protection against input reverse polarity, output (...)
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REFERENCE DESIGNS Download
IEEE802.3at Type-1 PoE and 12V adapter input to point of load reference design for IP network camera
TIDA-010034 — Power over Ethernet (PoE) enables power to be delivered over the same ethernet cable as data with no danger of cross-talk, interference, or corruption of the data streams. This reference design showcases end-to-end power tree for an IP network camera powered using PoE or 12-V adapter based on the (...)
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REFERENCE DESIGNS Download
High efficiency power supply architecture reference design for protection relay processor module
TIDA-010011 — This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
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REFERENCE DESIGNS Download
Small Efficient Flexible Power Supply Reference Design for NXP™ iMX7 Series Application Processors
TIDA-01416 — This small, efficient and flexible power supply for NXP™ IMX7 series application processors reference design demonstrates a complete power solution for iMX7 processors. This simple solution uses just five DC/DC converters and one sequencer IC to power the iMX7 very cost-effectively. This TI (...)
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REFERENCE DESIGNS Download
Xilinx® Zynq® 7000 series (XC7Z015) Power Solution, 8W - Reference Design
PMP10601 — The PMP10601 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z015)  FPGA.   This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA.  It also (...)
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REFERENCE DESIGNS Download
Xilinx Kintex UltraScale XCKU040 FPGA Power Solution, 6W Reference Design
PMP10630 — The PMP10630 reference design is a complete high density power solution for Xilinx® Kintex® UltraScale™ XCKU040 FPGA. This design uses an optimal combination of SIMPLE SWITCHER® modules and LDOs to provide all the necessary voltage rails in a small solution size of 36 x 43 mm (1.4 (...)
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REFERENCE DESIGNS Download
Xilinx Virtex® UltraScale™ FPGA Multi-Gigabit Transceiver (MGT) Power Solution
PMP10520 — The PMP10520 reference design provides all the power supply rails (1V/20A, 1.2V/30A, 1.8V/4A) necessary to power the multi-gigabit transcievers (MGT) in Xilinx's Virtex® Ultrascale™  FPGAs.  This design uses a 5V input and has a PMBus interface for current and voltage monitoring (...)
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REFERENCE DESIGNS Download
Xilinx® Zynq®7000 series (XC7Z015) Power Solution, 5W - Reference Design
PMP10600 — The PMP10600.1 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z015) FPGA.   This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator.  It also features one LM3880 for power up and power down (...)
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REFERENCE DESIGNS Download
Xilinx Zynq 7000 Series (XC7Z045) 20W Reference Design
PMP10613 — The PMP10613 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z045)  FPGA.   This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA.  It (...)
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REFERENCE DESIGNS Download
System-Level Reference Design for 30W ADAS System With Required Automotive Protections
PMP10652 — PMP10652 is a System optimized (CISPR 25 Class 3) 30W design for Surround View ADAS system.

The design has various protections such as Load dump through TVS (ISO pulse testing), Reverse Voltage (Innovative Smart diode with very low Iq), Battery Disconnect Switch with OVP protection (PFET) and is EMI (...)
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REFERENCE DESIGNS Download
Altera Cyclone V SoC Power Supply Reference Design
PMP9353 — The PMP9353 reference design is a complete power solution for Altera Cyclone V SoC devices. This design uses several LMZ3 series modules , two LDOs, and a DDR termination regulator to provide all the necessary rails to power the SoC chip. This design also shows correct power-up sequencing.
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REFERENCE DESIGNS Download
Altera® Stratix® V FPGA Power Solution
PMP9365 — The PMP9365 reference design provides all the power supply rails necessary to power Altera's Stratix V family of FPGAs.  This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA.  It also features two (...)
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REFERENCE DESIGNS Download
Simple 6-Channel Power Supply Sequencing Reference Design for Multi-rail Outputs
PMP10711 — PMP10711 is a 6-channel power supply sequencer that utilizes two LM3880 3-channel sequencer ICs. The design uses an external AND gate and OR gate to power up and power down all 6 channels in sequential fashion. This is useful in cases when up to 6 power rails need to be sequenced during power up and (...)
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REFERENCE DESIGNS Download
Xilinx Virtex Ultrascale FPGA Multi-Gigabit Transceiver (MGT) Power Reference Design with PMBus
PMP9408 — The PMP9408 reference design provides all the power supply rails necessary to power the multi-gigabit transcievers (MGT) in Xilinx's Virtex® Ultrascale™ FPGAs.  It utilizes a PMBus interface for current and voltage monitoring and meets Xilinx's low output voltage ripple (...)
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REFERENCE DESIGNS Download
Xilinx Virtex Ultrascale FPGA Multi-Gigabit Transceiver (MGT) Power Reference Design with PMBus
PMP9407 — The PMP9407 reference design provides all the power supply rails necessary to power the multi-gigabit transcievers (MGT) in Xilinx's Virtex® Ultrascale™ FPGAs.  This design uses a 5V input and has a PMBus interface for current and voltage monitoring, margining, timing delays, and (...)
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REFERENCE DESIGNS Download
Power Reference Design for Xilinx Ultrascale Kintex FPGA Multi-Gigabit Transciever (MGT) with PMBus
PMP9463 — The PMP9463 reference design provides all the power supply rails necessary to power the multi-gigabit transcievers (MGT) in Xilinx's Ultrascale™ Kintex® FPGAs.  It utilizes a PMBus interface for current and voltage monitoring and meets Xilinx's low output voltage ripple (...)
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REFERENCE DESIGNS Download
Xilinx(r) Ultrascale(r) 16nm FPGA/SoC Power Solution for Mobile Radio Basestation with PMBus
PMP10555 — The PMP10555 reference design provides all the power supply rails necessary to power Xilinx® Ultrascale® 16nm family of FPGAs/SoCs in a mobile radio basestation application.   This design uses a PMBus compatible 20A integrated FET buck converter for the core and two multi-output buck (...)
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Reference designs for a discrete approach to SoC and FPGA power

Power supply design for SoC and FPGA made easy with discrete devices

Posted: 21-Jan-2018
Duration: 11:18

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