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Analog Devices Inc. LT8364HMSE#PBF
- Part No.:
- LT8364HMSE#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Datasheet:
-
LT8364HMSE#PBF.pdf
- Description:
- IC REG BOOST SEPIC 4A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,153
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Product details
Overview
LT8364HMSE#PBF from Analog Devices is a 60V, 4A current-mode DC/DC converter IC supporting boost, SEPIC, and inverting topologies with single-feedback-pin configuration. It operates from 2.8V to 60V input, delivers ultralow 9µA quiescent current in Burst Mode, maintains ≤15mV output ripple, and features programmable 300kHz–2MHz switching frequency - ideal for automotive power supplies requiring high efficiency across wide load ranges.
For engineers reviewing the LT8364HMSE#PBF datasheet, LT8364HMSE#PBF pinout, LT8364HMSE#PBF application, or LT8364HMSE#PBF equivalent, key selection considerations include its AEC-Q100 qualification, –40°C to 150°C junction temperature rating, BIAS pin for INTVCC efficiency optimization, SYNC/MODE pin for EMI-reducing spread-spectrum modulation, and dual-package availability (MSOP-16 with 4 pins removed) with exposed thermal pad.
Technical Context
The LT8364HMSE#PBF implements fixed-frequency current-mode control with internal 1.6V (positive) or –0.8V (negative) feedback reference, enabling topology-agnostic regulation via FBX pin polarity. Its error amplifier (75 µA/V transconductance, 185 V/V gain) drives VC for peak-current loop stability across input/output variations.
Switching behavior is dynamically managed through SYNC/MODE pin logic: ground (<0.14V) enables low-ripple Burst Mode; floating enables pulse-skipping; external clock synchronizes operation; and >1.7V or 100k-to-GND configures pulse-skip/SSFM or Burst/SSFM modes. Frequency foldback and programmable soft-start (2µA charge current) further enhance startup reliability under varying loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports direct battery-fed automotive systems (12V/24V/48V) without pre-regulation. |
| Switch Rating | 60V, 4A - handles transient surges up to 60V and delivers ≥1A continuous output at 48V boost with 12V input. |
| Quiescent Current | 9µA in Burst Mode - extends battery life in always-on vehicle modules (e.g., telematics, ADAS sensors). |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - enables compact magnetics and avoids AM band interference. |
| Operating Temperature | –40°C to 150°C junction - qualified per AEC-Q100 Grade H for under-hood automotive applications. |
| Feedback Reference | 1.6V (positive) or –0.8V (negative) - allows single-resistor-divider programming of both boost and inverting outputs. |
| BIAS Pin Function | Accepts 4.4V–VIN supply to power INTVCC - reduces VIN current draw and improves full-load efficiency by >2%. |
Pinout & Package
LT8364HMSE#PBF is housed in a thermally enhanced 16-lead MSOP package with four pins removed (MSE16 variation), featuring an exposed PGND/GND pad (Pin 17) that must be soldered to PCB for thermal management (θJA = 45°C/W, θJC = 10°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable / Undervoltage Lockout Input | Shuts down IC below 1.545V; resumes switching above 1.68V with 80mV hysteresis - enables precise system-level brownout protection. |
| VIN | Main Input Supply | Accepts 2.8V–60V; powers internal circuitry unless BIAS supplies INTVCC - requires local ceramic bypass near exposed pad. |
| SW1, SW2 | Power Switch Output | Drives external inductor/diode network; 60V/4A rating supports high-voltage boost and SEPIC configurations. |
| FBX | Feedback Regulation Input | Senses positive (1.6V ref) or negative (–0.8V ref) output voltage - eliminates need for separate topology-specific feedback networks. |
| SYNC/MODE | Mode Selection & Clock Sync | Selects Burst/Pulse-skip/SSFM/Sync via voltage thresholds - enables EMI reduction without sacrificing light-load efficiency. |
| BIAS | Secondary INTVCC Supply | Supplies 3.2V regulator when 4.4V ≤ BIAS ≤ VIN - offloads VIN current, improving efficiency especially in SEPIC with VOUT < VIN. |
| SS | Soft-Start Control | 2µA constant-current ramp controls inductor current rise - prevents inrush and ensures monotonic VOUT startup. |
| PGND/GND | Power & Signal Ground | Exposed pad (Pin 17) serves as primary thermal path and low-impedance return - must be soldered to solid copper plane. |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode Operation | 9µA IQ with ≤15mV ripple - sustains regulation during microamp-level standby loads (e.g., CAN bus wake-up receivers). |
| Topology Flexibility | Single FBX pin supports boost, SEPIC, and inverting configurations - reduces BOM count and simplifies design reuse. |
| Spread Spectrum Modulation | ±14–28% frequency deviation at fOSC/256 rate - lowers peak EMI by spreading energy across spectrum without filter redesign. |
| Programmable UVLO | Resistive divider on EN/UVLO sets turn-on/off thresholds (e.g., 8V–10V window) - prevents erratic restart during cold-cranking. |
| Thermal Robustness | 150°C max junction rating with integrated overtemperature shutdown - ensures reliability in sealed enclosures or high-ambient zones. |
Applications
| Automotive Front-End Power | Industrial Sensor Node Supply |
|---|---|
Use Scenario: Generating stable 48V rail from 12V vehicle battery for camera modules and radar transceivers. IC Role / Device Role / Timing Role: Primary DC/DC controller managing boost conversion with dynamic load response and cold-crank tolerance. Use Value: Maintains 48V output during 4.5V battery dips while consuming only 9µA in sleep - extends functional safety monitoring uptime. |
Use Scenario: Powering isolated RS-485 transceivers and MEMS pressure sensors in explosion-proof process controllers. IC Role / Device Role / Timing Role: High-voltage SEPIC regulator delivering 24V from 18–36V industrial input with galvanic isolation support. Use Value: Eliminates need for external pre-regulator; 60V switch withstands 40V transients per IEC 61000-4-5 Level 4. |
| Portable Medical Imaging | Telecom Remote Radio Unit |
Use Scenario: Driving CCD/CMOS image sensors requiring low-noise ±15V rails from single-cell Li-ion (3.0–4.2V). IC Role / Device Role / Timing Role: Inverting converter generating negative output with precision feedback and minimal EMI coupling. Use Value: Single FBX pin simplifies dual-rail design; Burst Mode preserves battery charge during idle imaging intervals. |
Use Scenario: Providing 28V bias for GaN power amplifiers in 5G small cells powered from 48V PoE++ infrastructure. IC Role / Device Role / Timing Role: High-efficiency boost converter synchronized to baseband clock to suppress switching noise in RF front-end. Use Value: SYNC pin alignment prevents beat frequencies; SSFM reduces conducted emissions below CISPR 32 Class B limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3789EMSE#PBF | Requires external MOSFETs; no integrated 4A switch; supports synchronous rectification. | Better suited for >5A output or ultra-high-efficiency (>95%) designs where discrete FET optimization is critical. | Choose LTC3789EMSE#PBF when output current exceeds 3A or when thermal budget allows discrete FET layout. |
| LT8330HMSE#PBF | Lower 3.4A/40V switch rating; fixed 2MHz frequency; no BIAS pin or SSFM capability. | Targeted at cost-sensitive, space-constrained applications needing only basic boost functionality. | Choose LT8330HMSE#PBF for simplified 2MHz-only designs where EMI and thermal headroom are less critical. |
Compared with LTC3789EMSE#PBF and LT8330HMSE#PBF, the LT8364HMSE#PBF uniquely integrates a 60V/4A switch with AEC-Q100 H-grade rating, BIAS-enabled efficiency gains, and multi-mode EMI mitigation - making it optimal for automotive and industrial boost/SEPIC where integration, reliability, and regulatory compliance are prioritized.
Availability
LT8364HMSE#PBF is available at Aetrix Electronics and suitable for automotive front-end power, industrial sensor node supply, portable medical imaging, and telecom remote radio unit applications requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LT8364HMSE#PBF 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets with robust, precision power solutions.
The LT8364 product line delivers highly integrated, thermally optimized DC/DC controllers for harsh-environment applications - designed specifically for automotive under-hood power conversion, industrial automation, and portable instrumentation requiring wide VIN, low IQ, and topology flexibility.
FAQ
What is the maximum junction temperature rating for the LT8364HMSE#PBF?
The LT8364HMSE#PBF is rated for operation up to 150°C junction temperature and is AEC-Q100 qualified for automotive Grade H applications. This specification is confirmed in the Absolute Maximum Ratings table (Page 2) and supported by thermal characterization data (θJA = 45°C/W). The device includes overtemperature protection that activates above 170°C to prevent permanent damage, ensuring safe operation within its specified range.
How does the BIAS pin improve efficiency in the LT8364HMSE#PBF?
The BIAS pin on the LT8364HMSE#PBF accepts a secondary supply (4.4V ≤ BIAS ≤ VIN) to power the internal 3.2V INTVCC regulator, thereby reducing current draw from VIN. When enabled, this feature lowers total input current - particularly beneficial in SEPIC configurations where VOUT may be lower than VIN - and improves full-load efficiency by up to 2.5%, as verified in typical performance curves (Page 6, G11/G12).
Can the LT8364HMSE#PBF generate negative output voltages?
Yes, the LT8364HMSE#PBF supports inverting converter configurations using the same FBX pin, which references –0.80V for negative output regulation. As detailed in the Block Diagram (Page 9) and Applications Information (Page 10), connecting the feedback divider from VOUT to GND pulls FBX to –0.8V, activating amplifier A2 for non-inverting control - enabling clean, regulated negative rails without additional ICs.
What are the valid SYNC/MODE pin configurations and their functional outcomes for the LT8364HMSE#PBF?
The LT8364HMSE#PBF SYNC/MODE pin supports five distinct modes: (1) <0.14V → Burst Mode; (2) External clock (0.4–6V square wave) → Sync + Pulse-skip; (3) 100kΩ to GND → Burst + SSFM; (4) Floating → Pulse-skip; (5) >1.7V → Pulse-skip + SSFM. These are explicitly defined in the Pin Functions section (Page 8) and validated in the Applications Information (Page 12), with timing thresholds tested across temperature.
Is the LT8364HMSE#PBF pin-compatible with other variants in the LT8364 family?
Yes, the LT8364HMSE#PBF shares identical pinout and footprint with all LT8364 MSE-package variants (e.g., LT8364EMSE#PBF, LT8364IMSE#PBF), including the 16-lead MSOP with four pins removed and exposed thermal pad (Pin 17). Mechanical compatibility is confirmed in the Pin Configuration diagrams (Page 2) and ORDER INFORMATION table (Page 2), enabling drop-in replacement across temperature grades.
LT8364HMSE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- 60V (Switch)
- Current - Output:
- 4A (Switch)
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LT8364HMSE#PBF FAQ
1.How can I place an order for LT8364HMSE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8364HMSE#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 LT8364HMSE#PBF reliable?
The price and inventory of LT8364HMSE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8364HMSE#PBF is usually 5 days.
3.What payment methods are accepted for LT8364HMSE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8364HMSE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8364HMSE#PBF?
LT8364HMSE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8364HMSE#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 LT8364HMSE#PBF?
For technical support, including LT8364HMSE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8364HMSE#PBF requirements.
6.How does Aetrix verify that LT8364HMSE#PBF is sourced from the original manufacturer or authorized distributors?
All LT8364HMSE#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 LT8364HMSE#PBF meets industry standards.
7.What is the process for return or replacement of LT8364HMSE#PBF?
All LT8364HMSE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8364HMSE#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 LT8364HMSE#PBF part is unused and in its original packaging.
Return procedure for LT8364HMSE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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