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Analog Devices Inc. LT3668EMSE#PBF
- Part No.:
- LT3668EMSE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT3668EMSE#PBF.pdf
- Description:
- IC REG TRIPLE BUCK/LINEAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:125
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Product details
Overview
LT3668EMSE#PBF from Analog Devices is a wide-input multi-output regulator for automotive and industrial systems requiring efficient step-down conversion plus auxiliary linear rails. The device belongs to a power-supply family intended to simplify compact multi-rail designs from high-voltage inputs.
As part of the LT3668 product family, LT3668EMSE#PBF combines high-voltage buck conversion, low-current auxiliary regulation, low-power operating behavior, protection functions, and thermally enhanced MSOP packaging. For engineers reviewing the LT3668EMSE#PBF datasheet, LT3668EMSE#PBF pinout, LT3668EMSE#PBF application, or LT3668EMSE#PBF equivalent, this device is widely used in automotive battery regulation, industrial control boards, sensor supplies, always-on rails, portable instrumentation, and compact embedded power architectures.
Technical Context
In wide-input embedded systems, LT3668EMSE#PBF operates as a regulator solution for generating a primary buck rail and auxiliary low-current rails from automotive or industrial supplies.
The architecture supports compact power trees where light-load current, thermal behavior, and protected auxiliary regulation matter. This makes it useful in always-on modules and sensor supplies that must operate from variable high-voltage sources.
LT3668EMSE#PBF is commonly used when designers need a Linear Technology wide-input multi-output regulator in an MSOP package for 12V, 24V, adapter, or battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | Wide-input multi-output regulator with buck and auxiliary regulator functions. |
| Input Use | Automotive and industrial high-voltage supply operation. |
| Buck Output | Integrated step-down regulator for primary rail generation. |
| Auxiliary Rails | Linear regulator functions support secondary or always-on rails. |
| Package | EMSE thermally enhanced MSOP package option. |
| Applications | Automotive battery, industrial control, sensors, and compact embedded power. |
| Design Value | Combines switching and auxiliary regulation in one wide-input IC. |
| Protection | Family protection functions support reliable embedded operation. |
Pinout & Package
The LT3668EMSE#PBF pinout includes high-voltage input, switch node, feedback, auxiliary regulator pins, enable/UVLO, status, and ground/thermal functions.
For PCB design, the switching loop should be compact, auxiliary rail capacitors should be close to the IC, and thermal copper should be used under the MSOP exposed pad.
| Pin / Function | PCB Design and Circuit Role |
|---|---|
| VIN | Wide input supply for regulator operation. |
| SW | Buck switching node connected to the inductor. |
| FB | Buck feedback input for output regulation. |
| Auxiliary Regulator Pins | Connections for low-current secondary rails. |
| RUN / UVLO | Startup and input threshold control. |
| PG / Status | Rail-good or status indication. |
| GND / Exposed Pad | Ground and thermal return path. |
Key Features
- Wide-input operation supports automotive and industrial rails.
- Buck plus auxiliary regulation reduces regulator count.
- Low-power behavior supports always-on systems.
- Thermally enhanced MSOP package supports compact layouts.
- Control and status pins simplify rail management.
- Suitable for sensor and instrumentation supplies.
Applications
| Automotive Modules | Industrial Controls |
|---|---|
|
Use Scenario: Used in 12V vehicle electronics. IC Role: Generates local buck and auxiliary rails. Use Value: Supports compact wide-input power. |
Use Scenario: Used in 24V control boards. IC Role: Converts high input supplies into embedded rails. Use Value: Improves integration. |
| Sensor Supplies | Always-On Rails |
|
Use Scenario: Used in field-connected sensing systems. IC Role: Provides primary and auxiliary regulation. Use Value: Supports reliable local power. |
Use Scenario: Used in low-power monitoring electronics. IC Role: Maintains regulated rails under standby conditions. Use Value: Improves system readiness. |
Equivalent & Alternatives
When evaluating a LT3668EMSE#PBF equivalent, engineers should compare input range, rail count, auxiliary regulator current, package, quiescent current, and protection behavior.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3667EMSE#PBF | Analog Devices related triple supply with one buck and two fault-protected LDO regulators. | Used when integrated protected LDO rails are required. | Compare LDO structure, current rating, package, and protection needs. |
| LT3694EFE#PBF | Analog Devices buck regulator with dual LDO controllers and higher buck current capability. | Used when external pass-device LDO control and higher buck output are preferred. | Compare current, LDO architecture, package, and thermal design. |
Compared with LT3667EMSE#PBF, LT3668EMSE#PBF should be selected according to its specific auxiliary regulator arrangement and package. LT3668EMSE#PBF vs LT3694EFE#PBF selection depends on buck current, LDO-controller needs, package, and input-transient environment.
Quality
LT3668EMSE#PBF should be sourced as original Analog Devices components through traceable channels. Quality checks may include MSOP package inspection, top-mark validation, solderability testing, and regulator output verification.
Production validation should include startup, output accuracy, thermal rise, auxiliary rail behavior, light-load current, and switching-layout performance.
Availability
LT3668EMSE#PBF available at Aetrix Electronics and is suitable for automotive, industrial, sensor, instrumentation, and always-on embedded power systems.
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 configuration, current budget, lifecycle status, and sourcing continuity helps reduce procurement 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 LT3668 product family is a wide-input multi-output regulator series for automotive and industrial systems requiring step-down conversion and auxiliary regulation in compact packages.
FAQ
What is LT3668EMSE#PBF used for?
LT3668EMSE#PBF is used for automotive, industrial, sensor, and always-on embedded systems requiring wide-input multi-output regulation.
Where can I find the LT3668EMSE#PBF datasheet download?
The LT3668EMSE#PBF datasheet is available from Analog Devices and includes electrical ratings, package data, pin functions, and application circuits.
What should be considered in LT3668EMSE#PBF pinout design?
Designers should keep the buck loop compact, place auxiliary rail capacitors close, and connect the exposed pad to thermal copper.
Is LT3668EMSE#PBF suitable for automotive supply rails?
Yes. It is intended for wide-input automotive and industrial power architectures.
What are common LT3668EMSE#PBF equivalent solutions?
Common candidates include LT3667EMSE#PBF and LT3694EFE#PBF depending on auxiliary regulator structure, current requirements, and package.
LT3668EMSE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (2)
- Number of Outputs:
- 3
- Frequency - Switching:
- 250kHz ~ 2.2MHz
- Voltage/Current - Output 1:
- 1.2V ~ 39.4V, 400mA
- Voltage/Current - Output 2:
- 1.1V ~ 10V, 200mA
- Voltage/Current - Output 3:
- 1.1V ~ 10V, 200mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 1.6V ~ 40V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LT3668EMSE#PBF FAQ
1.How can I place an order for LT3668EMSE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3668EMSE#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 LT3668EMSE#PBF reliable?
The price and inventory of LT3668EMSE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3668EMSE#PBF is usually 5 days.
3.What payment methods are accepted for LT3668EMSE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3668EMSE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3668EMSE#PBF?
LT3668EMSE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3668EMSE#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 LT3668EMSE#PBF?
For technical support, including LT3668EMSE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3668EMSE#PBF requirements.
6.How does Aetrix verify that LT3668EMSE#PBF is sourced from the original manufacturer or authorized distributors?
All LT3668EMSE#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 LT3668EMSE#PBF meets industry standards.
7.What is the process for return or replacement of LT3668EMSE#PBF?
All LT3668EMSE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3668EMSE#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 LT3668EMSE#PBF part is unused and in its original packaging.
Return procedure for LT3668EMSE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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