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Analog Devices Inc. LT3380IUJM#PBF
- Part No.:
- LT3380IUJM#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LT3380IUJM#PBF.pdf
- Description:
- IC REG QD BUCK/LNR 2.25MHZ 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,553
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Product details
Overview
LT3380IUJM#PBF from Analog Devices is an I2C-controlled multi-output PMIC integrating four synchronous buck regulators and three 300mA LDO regulators. The device is designed for advanced portable application processor and industrial and advanced portable embedded systems that need configurable rails, dynamic voltage scaling, and status reporting in a compact QFN package.
As part of the LT3380 family, LT3380IUJM#PBF provides four I2C-adjustable step-down outputs, three low-noise LDO rails, independent enable or I2C sequencing, programmable power-down control, fault/status registers, and selectable switching frequency. For engineers reviewing the LT3380IUJM#PBF datasheet, LT3380IUJM#PBF pinout, LT3380IUJM#PBF application, or LT3380IUJM#PBF equivalent, this device is widely used in application processor systems, SoC power trees, memory rails, I2C-controlled embedded platforms, automotive infotainment, and low-noise analog supplies.
Technical Context
In processor-based embedded systems, LT3380IUJM#PBF operates as a configurable seven-rail PMIC. Four synchronous buck converters supply core, memory, I/O, and SoC rails, while three 300mA LDOs provide lower-noise analog or auxiliary supplies.
The I2C serial interface allows regulator enables, sequencing, output-voltage levels, dynamic voltage scaling, operating modes, and status reporting to be controlled by system firmware. This makes the device more flexible than pin-only PMICs in platforms that adjust voltage or power state during runtime.
LT3380IUJM#PBF is especially useful in industrial and advanced portable systems where high-current rails, low-noise rails, warnings, fault reporting, and low standby current must be coordinated in a small 40-lead side-wettable QFN footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | I2C-controlled multi-output PMIC with four buck regulators and three LDO regulators. |
| Buck Regulators | Four I2C-adjustable outputs rated 2.5A, 2.5A, 1.5A, and 1.5A. |
| LDO Outputs | Three 300mA LDO regulators, including adjustable low-noise rails. |
| Control Interface | I2C controls enables, sequencing, voltage levels, dynamic voltage scaling, operating modes, and status reporting. |
| Switching Frequency | Selectable 2.25MHz or 1.12MHz switching frequency. |
| Standby Current | 12uA standby current supports low-power system states. |
| Package | Side-wettable 40-lead 6mm x 6mm QFN package. |
| Automotive Use | LT3380H options support 150C junction operation and AEC-Q100 qualified applications. |
Pinout & Package
The LT3380HUJM#PBF pinout combines four buck power stages, three LDO outputs, I2C interface pins, enable controls, IRQ/status functions, feedback nodes, and thermal ground in a side-wettable QFN package.
PCB design should separate the four switching loops, place each inductor and capacitor close to its channel, route I2C and feedback lines away from switch nodes, and use the exposed pad for thermal spreading.
| Pin / Function | PCB Design and Circuit Role |
|---|---|
| VIN Pins | Input supplies for buck and LDO regulator sections. |
| SW1-SW4 | Switching nodes for the four buck converters. |
| LDO Outputs | Three 300mA low-noise linear regulator outputs. |
| SCL / SDA | I2C serial interface for configuration and status. |
| EN Pins | Hardware enable controls and pin-strap sequencing options. |
| IRQ / PG | Interrupt and power-good/status reporting functions. |
| FB / Sense Pins | Feedback and sensing nodes for output regulation. |
| GND / Exposed Pad | Ground and thermal path for multi-rail operation. |
Key Features
- Four high-current I2C-adjustable buck outputs support processor rails.
- Three 300mA LDOs provide low-noise auxiliary supplies.
- I2C control enables dynamic voltage scaling and status reporting.
- Selectable switching frequency supports efficiency and component-size choices.
- Low standby current supports power-managed systems.
- Side-wettable QFN supports automotive inspection needs.
Applications
| Application Processors | Automotive Infotainment |
|---|---|
|
Use Scenario: Used in advanced processor-based platforms. IC Role: Supplies core, memory, I/O, and auxiliary rails. Use Value: Supports configurable rail sequencing and voltage scaling. |
Use Scenario: Used in vehicle display, compute, and infotainment modules. IC Role: Provides monitored multi-rail power in a compact package. Use Value: Supports automotive-grade power integration. |
| Embedded Computing | Low-Noise Analog Rails |
|
Use Scenario: Used in industrial and communication compute boards. IC Role: Generates several high-current and low-noise rails. Use Value: Reduces regulator count and software-manages power states. |
Use Scenario: Used near sensors, converters, and mixed-signal subsystems. IC Role: LDO outputs provide cleaner auxiliary rails. Use Value: Improves signal-chain supply quality. |
Equivalent & Alternatives
When evaluating a LT3380HUJM#PBF equivalent, engineers should compare I2C control, number of buck and LDO rails, dynamic voltage scaling, status reporting, standby current, package, and automotive qualification.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3383HUJM#PBF | Related Analog Devices PMIC with four bucks and three LDOs but pin-strap sequencing rather than the same I2C-adjustable control set. | Used when the design does not require full I2C voltage and mode control. | Choose according to firmware requirements, sequencing method, and status-reporting needs. |
| TPS6594-Q1 | Texas Instruments automotive PMIC family with multiple rails, monitoring, and safety-oriented features. | Used in automotive processor platforms requiring configurable system power management. | Compare rail count, safety functions, interface, software support, package, and qualification requirements. |
Compared with LT3383HUJM#PBF, LT3380HUJM#PBF is selected when I2C configuration, dynamic voltage scaling, and richer status reporting are required. LT3380HUJM#PBF vs TPS6594-Q1 selection depends on safety features, software ecosystem, rail current, and automotive platform requirements.
Quality
LT3380HUJM#PBF should be sourced as original Analog Devices components through traceable supply channels. Quality checks may include QFN inspection, top-mark validation, solderability testing, and electrical verification of buck, LDO, and I2C functions.
Production validation should include rail sequencing, I2C communication, dynamic voltage scaling, fault reporting, buck transient behavior, LDO noise, thermal performance, and EMI-sensitive layout review.
Availability
LT3380HUJM#PBF available at Aetrix Electronics and is suitable for automotive, processor, embedded computing, and multi-rail I2C-controlled power platforms.
Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.
For production builds, confirming package, rail programming, software control requirements, temperature grade, lifecycle status, and sourcing continuity helps reduce manufacturing risk.
Manufacturer
Analog Devices is a global semiconductor manufacturer specializing in analog ICs, power management, mixed-signal products, data converters, RF solutions, sensors, and embedded signal-chain technologies for industrial, communication, automotive, healthcare, and consumer applications.
The LT3380 product family is an I2C-controlled multi-output PMIC series with four synchronous buck regulators and three LDOs for advanced processor-based and automotive embedded power systems.
FAQ
What is LT3380IUJM#PBF used for?
LT3380IUJM#PBF is used for application processor, automotive, embedded computing, and mixed-signal systems requiring four buck rails, three LDO rails, and I2C power control.
Where can I find the LT3380IUJM#PBF datasheet download?
The LT3380IUJM#PBF datasheet is available from Analog Devices and includes I2C register behavior, rail ratings, package data, and application guidance.
What should be considered in LT3380IUJM#PBF pinout design?
Designers should separate switching loops, route I2C and feedback carefully, place passives near each regulator channel, and connect the exposed pad to thermal copper.
Does LT3380IUJM#PBF support dynamic voltage scaling?
Yes. The LT3380 family supports I2C-controlled output voltage levels and dynamic voltage scaling.
What are common LT3380IUJM#PBF equivalent solutions?
Common candidates include LT3383HUJM#PBF and TPS6594-Q1 depending on I2C control, rail count, safety features, and automotive requirements.
LT3380IUJM#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Topology:
- Step-Down (Buck)
- Number of Outputs:
- 4
- Frequency - Switching:
- 1.12MHz, 2.25MHz
- Voltage/Current - Output 1:
- 0.725V ~ 5.5V, 2.5A
- Voltage/Current - Output 2:
- 0.725V ~ 5.5V, 2.5A
- Voltage/Current - Output 3:
- 1.8V, 1.5A
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 40-QFN (6x6)
LT3380IUJM#PBF FAQ
1.How can I place an order for LT3380IUJM#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3380IUJM#PBF 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 LT3380IUJM#PBF reliable?
The price and inventory of LT3380IUJM#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3380IUJM#PBF is usually 5 days.
3.What payment methods are accepted for LT3380IUJM#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3380IUJM#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3380IUJM#PBF?
LT3380IUJM#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3380IUJM#PBF 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 LT3380IUJM#PBF?
For technical support, including LT3380IUJM#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3380IUJM#PBF requirements.
6.How does Aetrix verify that LT3380IUJM#PBF is sourced from the original manufacturer or authorized distributors?
All LT3380IUJM#PBF 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 LT3380IUJM#PBF meets industry standards.
7.What is the process for return or replacement of LT3380IUJM#PBF?
All LT3380IUJM#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3380IUJM#PBF, 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 LT3380IUJM#PBF part is unused and in its original packaging.
Return procedure for LT3380IUJM#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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