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Texas Instruments LM3880QMFX-1AC/NOPB
- Part No.:
- LM3880QMFX-1AC/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Power Supply Controllers, Monitors
- Package:
- SOT-23-6
- Datasheet:
-
LM3880QMFX-1AC/NOPB.pdf
- Description:
- IC PWR SUPPLY SEQUENCER SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:488
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Product details
Overview
LM3880QMFX-1AC/NOPB from Texas Instruments is an AEC-Q100 qualified automotive-grade power supply sequencer that controls startup and shutdown sequencing of three independent voltage rails using a single enable signal. It features 60-ms timing delays per stage, operates from 2.7 V to 5.5 V, draws only 25 µA quiescent current, and uses open-drain FLAG outputs for flexible interfacing with regulators in ADAS camera modules.
For engineers reviewing the LM3880QMFX-1AC/NOPB datasheet, LM3880QMFX-1AC/NOPB pinout, LM3880QMFX-1AC/NOPB application, or LM3880QMFX-1AC/NOPB equivalent, this device delivers precise, temperature-stable rail sequencing with glitch-free enable control, reverse-order power-down, and cascade capability for up to nine rails - critical for FPGA, microprocessor, and multi-rail automotive power systems.
Technical Context
The LM3880QMFX-1AC/NOPB implements six independent, factory-programmed timers (td1–td6) - three for power-up (1–2–3 order) and three for reverse-order power-down (3–2–1). All timing delays are set to 60 ms per stage, with ±15% accuracy over –40°C to +125°C junction temperature and tight inter-timer ratio control (95–105%).
Its precision enable pin uses a 1.25-V internal bandgap reference with 7-µA pullup current, enabling external RC delay or resistor-divider threshold triggering. The three open-drain FLAG outputs support independent pullup voltages up to VCC + 0.3 V, allowing direct interface with diverse regulator enable inputs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Timing Option | AC = 60 ms per stage for both power-up and power-down sequences |
| Operating Voltage | 2.7 V to 5.5 V input supply - supports wide automotive battery range including cold-crank conditions |
| Quiescent Current | 25 µA typical - enables always-on sequencing control without significant standby power penalty |
| Temperature Range | –40°C to +125°C junction - qualified for under-hood and ADAS module deployment |
| Enable Threshold | 1.0 V to 1.4 V (typ. 1.25 V) - provides noise-immune, stable activation point across temperature |
| Output Type | Three open-drain FLAG pins - allows individual pullup to distinct supply rails (e.g., 1.2 V, 3.3 V, 5 V) |
| Package | SOT-23 (DBV), 6-pin, 2.9 mm × 1.6 mm - ultra-compact footprint for space-constrained automotive PCBs |
Pinout & Package
SOT-23 (DBV) package: 6-pin, 2.9 mm × 1.6 mm body, gull-wing leads, RoHS-compliant tin (Sn) lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Input supply | Primary power source (2.7–5.5 V); powers internal logic and timers |
| GND | Ground reference | Common return path for all internal circuitry and FLAG output sinks |
| EN | Enable input | Active-high precision enable with 1.25-V threshold; initiates power-up on rising edge, triggers power-down on falling edge |
| FLAG1 | Open-drain output 1 | First power-up flag (released after td1 = 60 ms); pulls low during power-down after td4 delay |
| FLAG2 | Open-drain output 2 | Second power-up flag (released after td2 = 60 ms); pulls low during power-down after td5 delay |
| FLAG3 | Open-drain output 3 | Third power-up flag (released after td3 = 60 ms); first to pull low during power-down (after td6 = 60 ms) |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C), qualified for safety-critical ADAS and camera modules |
| Sequencing flexibility | Fixed Sequence 1 (power-up: FLAG1→FLAG2→FLAG3; power-down: FLAG3→FLAG2→FLAG1) |
| Glitch immunity | EN pin resets active timer on deassertion before sequence completion - prevents partial sequencing and latch-up |
| Cascadability | Supports up to three devices in series to manage nine rails - no additional control logic required |
| Low-power operation | 25 µA IQ enables integration into always-on domains without compromising system sleep current |
Applications
| ADAS Camera Module Power Management | FPGA Core & I/O Rail Sequencing |
|---|---|
|
Use Scenario: Simultaneous power-up of image sensor, ISP, and power management IC in automotive surround-view camera. IC Role / Device Role / Timing Role: LM3880QMFX-1AC/NOPB generates staggered 60-ms enable signals to prevent inrush current exceeding 5 A and avoid sensor initialization failure. Use Value: Eliminates need for discrete RC networks or microcontroller-based sequencing, reducing BOM count and firmware complexity. |
Use Scenario: Controlled startup of 0.85-V core, 1.2-V auxiliary, and 3.3-V I/O supplies in Xilinx Zynq-7000 SoC design. IC Role / Device Role / Timing Role: LM3880QMFX-1AC/NOPB ensures core rail is enabled first and held for 60 ms before auxiliary, then I/O - satisfying FPGA vendor's tVCCINT > tVCCAUX > tVCCO requirement. Use Value: Guarantees reliable configuration loading by meeting strict voltage ramp ordering, avoiding configuration lockup or bitstream corruption. |
| Automotive Infotainment Processor Startup | Multi-Supply Industrial Controller |
|
Use Scenario: Power sequencing for quad-core ARM Cortex-A53 processor with DDR3L memory, PCIe switch, and audio codec. IC Role / Device Role / Timing Role: LM3880QMFX-1AC/NOPB coordinates enable timing across CPU core, memory, and peripheral rails using open-drain FLAG outputs pulled to respective supply domains. Use Value: Prevents latch-up during cold-start by enforcing reverse-order power-down (I/O → memory → core), protecting against data corruption on sudden ignition-off. |
Use Scenario: Sequencing of isolated 24-V input stage, 5-V logic rail, and 3.3-V MCU domain in DIN-rail mounted PLC controller. IC Role / Device Role / Timing Role: LM3880QMFX-1AC/NOPB interfaces via separate pullups: FLAG1 to 5-V LDO enable, FLAG2 to 3.3-V regulator, FLAG3 to isolated DC/DC enable - all referenced to local grounds. Use Value: Enables safe, repeatable power entry into fault-tolerant state machines without requiring custom ASIC or CPLD sequencing logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power supply sequencing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3880QMF-1AC/NOPB | Same timing (60 ms), same SOT-23 package, but 1,000-unit tape-and-reel vs. 3,000-unit large reel; identical electrical specs and marking (F29A) | Identical functional behavior; differs only in packaging format and minimum order quantity | Select LM3880QMF-1AC/NOPB for prototyping or low-volume production where smaller reels reduce inventory overhead. |
| LM3880QMFE-1AC/NOPB | Same timing and functionality, but supplied in 250-unit small tape-and-reel - optimized for evaluation and low-MOQ builds | No difference in sequencing capability; intended for lab validation and pre-production testing | Choose LM3880QMFE-1AC/NOPB when validating sequencing timing or integrating into early-stage hardware revisions. |
Compared with LM3880QMF-1AC/NOPB and LM3880QMFE-1AC/NOPB, the LM3880QMFX-1AC/NOPB offers identical electrical performance and timing but is optimized for high-volume manufacturing with 3,000-unit reels, reduced handling cost per unit, and streamlined logistics for Tier-1 automotive production programs.
Availability
LM3880QMFX-1AC/NOPB is available at Aetrix Electronics and suitable for automotive ADAS camera modules, FPGA power systems, and industrial controllers requiring stable component supply with guaranteed long-term availability and AEC-Q100 compliance.
Supply support for LM3880QMFX-1AC/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader focused on analog and embedded processing technologies, serving automotive, industrial, and communications markets with high-reliability, application-optimized ICs.
The LM3880-Q1 product line was designed specifically for automotive power sequencing - delivering robust, pin-efficient, and AEC-Q100 qualified solutions to replace complex discrete or microcontroller-based sequencing in safety-critical systems.
FAQ
What is the exact timing delay configuration of the LM3880QMFX-1AC/NOPB?
The LM3880QMFX-1AC/NOPB implements the AC timing option: all six internal timers (td1–td6) are factory-set to 60 ms each. This yields a total power-up duration of 180 ms (FLAG1 at 60 ms, FLAG2 at 120 ms, FLAG3 at 180 ms) and a reverse-order power-down sequence beginning 60 ms after EN deassertion. Accuracy is ±15% over –40°C to +125°C.
Does the LM3880QMFX-1AC/NOPB support independent pullup voltages for each FLAG output?
Yes, the LM3880QMFX-1AC/NOPB supports independent pullup voltages for FLAG1, FLAG2, and FLAG3 - each can be pulled up to a different supply rail (e.g., 1.2 V, 3.3 V, 5 V), provided no pullup exceeds VCC + 0.3 V. This enables direct interface with regulators having disparate enable voltage requirements without external level shifters.
How does the LM3880QMFX-1AC/NOPB handle incomplete sequencing events?
When the EN pin is deasserted mid-power-up, the LM3880QMFX-1AC/NOPB completes the current stage, then initiates power-down after ~120 ms - preventing partial rail activation. Similarly, if EN is reasserted mid-power-down, it finishes shutdown before restarting power-up. This behavior avoids latch-up in FPGAs and microprocessors and is intrinsic to the LM3880QMFX-1AC/NOPB's state machine.
Is the LM3880QMFX-1AC/NOPB pin-compatible with other LM3880-Q1 variants?
Yes, all LM3880-Q1 variants - including LM3880QMFX-1AC/NOPB, LM3880QMF-1AC/NOPB, and LM3880QMFE-1AC/NOPB - share identical SOT-23 (DBV) 6-pin pinout, electrical characteristics, and timing behavior. Only packaging format (reel size) and orderable part number differ; no PCB layout change is needed when substituting between them.
What is the role of the EPROM in the LM3880QMFX-1AC/NOPB?
The LM3880QMFX-1AC/NOPB contains factory-programmed EPROM that configures its timing delays (all set to 60 ms for AC option) and sequencing order (Sequence 1: power-up 1–2–3, power-down 3–2–1). This eliminates external configuration components and ensures deterministic, repeatable behavior - a key requirement for automotive ASIL-B compatible designs.
LM3880QMFX-1AC/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Power Supply Sequencer
- Voltage - Input:
- -
- Voltage - Supply:
- 2.7V ~ 5.5V
- Current - Supply:
- 25 µA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
LM3880QMFX-1AC/NOPB FAQ
1.How can I place an order for LM3880QMFX-1AC/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3880QMFX-1AC/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM3880QMFX-1AC/NOPB reliable?
The price and inventory of LM3880QMFX-1AC/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3880QMFX-1AC/NOPB is usually 5 days.
3.What payment methods are accepted for LM3880QMFX-1AC/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3880QMFX-1AC/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3880QMFX-1AC/NOPB?
LM3880QMFX-1AC/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3880QMFX-1AC/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM3880QMFX-1AC/NOPB?
For technical support, including LM3880QMFX-1AC/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3880QMFX-1AC/NOPB requirements.
6.How does Aetrix verify that LM3880QMFX-1AC/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3880QMFX-1AC/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM3880QMFX-1AC/NOPB meets industry standards.
7.What is the process for return or replacement of LM3880QMFX-1AC/NOPB?
All LM3880QMFX-1AC/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3880QMFX-1AC/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM3880QMFX-1AC/NOPB part is unused and in its original packaging.
Return procedure for LM3880QMFX-1AC/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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