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Analog Devices Inc. LT8364EMSE#WTRPBF
- Part No.:
- LT8364EMSE#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Datasheet:
-
LT8364EMSE#WTRPBF.pdf
- Description:
- IC REG BST SEPIC ADJ 4A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,241
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Product details
Overview
LT8364EMSE#WTRPBF 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, and supports programmable switching frequency from 300kHz to 2MHz - enabling high-efficiency power conversion in automotive infotainment head units requiring wide VIN range and low standby power.
For engineers reviewing the LT8364EMSE#WTRPBF datasheet, LT8364EMSE#WTRPBF pinout, LT8364EMSE#WTRPBF application, or LT8364EMSE#WTRPBF equivalent, this page provides verified package mapping (16-lead MSOP with 4 pins removed), confirmed thermal performance (θJA = 45°C/W), validated pin functions including SYNC/MODE mode selection and BIAS-enabled efficiency optimization, and two automotive-grade alternative options with documented functional trade-offs.
Technical Context
The LT8364EMSE#WTRPBF implements fixed-frequency current-mode control with dual error amplifiers - one active for positive output (1.60V FBX reference) and the other for negative output (–0.80V reference) - enabling topology reconfiguration without hardware change. Its oscillator uses an external RT resistor to set frequency between 300kHz and 2MHz, while frequency foldback and programmable soft-start prevent inrush current during startup.
It integrates a 60V/4A internal MOSFET switch with 100mΩ RDS(ON), supports spread-spectrum modulation for EMI reduction, and features intelligent INTVCC sourcing: automatically draws bias current from either VIN or BIAS pin (4.4V ≤ BIAS ≤ VIN) to maximize efficiency across load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports direct battery connection in 12V/24V/48V automotive systems without pre-regulation. |
| Switch Rating | 60V, 4A - enables 48V boost outputs up to 1A at 12V input, suitable for LED drivers and telecom power rails. |
| Quiescent Current | 9µA in Burst Mode - sustains >90% efficiency at 1mA load, critical for always-on vehicle modules. |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - allows EMI-sensitive designs to avoid AM band or align with system clocks. |
| FBX Reference Voltage | +1.60V or –0.80V - single pin supports both positive and negative output configurations without external op-amps. |
| Package Thermal Resistance | θJA = 45°C/W (MSOP-16) - enables 3W continuous output in compact automotive PCB layouts with minimal copper area. |
| Operating Junction Temp | –40°C to 125°C - AEC-Q100 qualified for under-hood and dashboard applications per Grade E specification. |
Pinout & Package
LT8364EMSE#WTRPBF is housed in a thermally enhanced 16-lead plastic MSOP package with four pins removed (MSE16 variation), featuring an exposed PGND/GND pad (Pin 17) that must be soldered to PCB for thermal and electrical integrity. θJA = 45°C/W, θJC = 10°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable / Undervoltage Lockout Input | Shuts down IC below 1.6V; resumes operation 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 10µF ceramic bypass near pin. |
| SW1/SW2 | Internal Power Switch Output | Drives external inductor/diode network; 60V/4A rating supports high-voltage boost and SEPIC - minimize trace area to reduce EMI. |
| FBX | Feedback Regulation Pin | Accepts +1.60V (boost/SEPIC) or –0.80V (inverting) reference - eliminates need for polarity-reversal circuitry in dual-rail designs. |
| SYNC/MODE | Mode Selection & Clock Sync Input | Selects Burst Mode (<0.14V), pulse-skip (float), SSFM (>1.7V), or external sync - enables dynamic EMI/efficiency optimization. |
| BIAS | Secondary Supply Input | Supplies INTVCC when 4.4V ≤ BIAS ≤ VIN - reduces VIN current draw by >95% at light loads, improving system efficiency. |
| SS | Soft-Start Control | 2µA constant-current charge to external capacitor - controls inductor current ramp rate and prevents output overshoot at startup. |
| PGND/GND | Power & Signal Ground | Exposed pad (Pin 17) serves as primary thermal path and low-impedance return - must be soldered to solid ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode Operation | 9µA IQ with <15mV output ripple - maintains regulation during vehicle sleep mode without compromising EMC compliance. |
| Topology Flexibility | Single FBX pin supports boost, SEPIC, and inverting configurations - reduces BOM count and simplifies design reuse across voltage-signature requirements. |
| Spread Spectrum Modulation | ±14–28% frequency deviation at 2MHz center - lowers peak EMI by >10dB in CISPR 25 Class 5 automotive testing. |
| Programmable UVLO | Resistive divider on EN/UVLO sets turn-on/off thresholds - enables battery voltage monitoring and graceful shutdown before deep discharge. |
| Thermal Enhancement | Exposed PGND pad with θJC = 10°C/W - allows 3W continuous dissipation in 10mm² footprint, eliminating need for heatsinks in space-constrained modules. |
Applications
| Automotive Infotainment | Industrial Sensor Transmitters |
|---|---|
|
Use Scenario: Powering 48V LCD backlight and audio amplifier from 12V vehicle battery with start-stop capability. IC Role / Device Role / Timing Role: Primary DC/DC controller managing boost conversion, EMI suppression via SSFM, and cold-crank survival down to 2.8V. Use Value: 9µA quiescent current prevents battery drain during 30-day parking; 60V switch withstands load-dump transients up to 65V. |
Use Scenario: Generating isolated ±15V rails for 4–20mA loop-powered pressure sensors in hazardous-area process control cabinets. IC Role / Device Role / Timing Role: Inverting converter providing negative rail with single FBX feedback, synchronized to host MCU clock via SYNC pin. Use Value: Dual-reference FBX eliminates external inverting op-amp; programmable soft-start prevents sensor calibration drift during power-up. |
| Telecom Remote Radio Units | Portable Medical Imaging |
|
Use Scenario: Boosting 24V DC supply to 48V for RF power amplifiers in 5G small-cell base stations deployed in temperature-variable outdoor enclosures. IC Role / Device Role / Timing Role: High-efficiency boost controller operating from –40°C to 125°C junction, using BIAS pin to source INTVCC from regulated 28V auxiliary rail. Use Value: BIAS-enabled efficiency gain reduces thermal stress on 24V input stage; AEC-Q100 qualification ensures reliability in extended-life deployments. |
Use Scenario: Powering CCD image sensors and analog front-end ASICs in handheld ultrasound probes requiring ultra-low noise and zero standby drain. IC Role / Device Role / Timing Role: Low-ripple Burst Mode converter delivering 3.3V/5V rails with <15mV peak-to-peak ripple and no audible switching noise. Use Value: 9µA IQ extends battery life beyond 12 hours per charge; minimum off-time of 50ns enables stable operation at 2MHz for compact magnetics. |
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#TRPBF | 4-switch synchronous buck-boost controller; no integrated MOSFET; requires external FETs and gate drivers. | Supports bidirectional power flow and higher efficiency (>95%) above 2A, but needs larger layout and more components. | Choose for high-current (>2A), high-efficiency (>94%) applications where board space and component count are secondary to thermal performance. |
| LT8330EMSE#TRPBF | 60V, 1.5A monolithic boost/SEPIC/inverting converter; same pinout family but lower current rating and no SSFM. | Matches LT8364EMSE#WTRPBF in topology flexibility and UVLO programming, but lacks spread spectrum and has 1.5A switch limit. | Choose for cost-sensitive, lower-power (<500mA) designs where EMI margin is sufficient without SSFM and thermal budget is relaxed. |
Compared with LTC3789EMSE#TRPBF and LT8330EMSE#TRPBF, the LT8364EMSE#WTRPBF uniquely combines monolithic 4A integration, automotive-grade temperature range, and SSFM - making it optimal for space-constrained, EMI-critical 1–2A automotive and industrial converters where BOM simplicity and qualification assurance are mandatory.
Availability
LT8364EMSE#WTRPBF is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor transmitters, telecom remote radio units, and portable medical imaging devices requiring stable component supply with full AEC-Q100 documentation and long-term lifecycle support.
Supply support for LT8364EMSE#WTRPBF 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 precision instrumentation, industrial automation, automotive, and communications markets since 1965.
The LT8364 belongs to Analog Devices' Power by Linear™ monolithic DC/DC converter product line, designed specifically for high-voltage, wide-input automotive and industrial power conversion where reliability, low IQ, and EMI robustness are non-negotiable.
FAQ
What is the maximum output current achievable with LT8364EMSE#WTRPBF in boost configuration?
The LT8364EMSE#WTRPBF supports up to 1A continuous output current in boost mode at 12V input to 48V output, limited by its 4A internal switch, thermal resistance (θJA = 45°C/W), and PCB copper area. At 24V input, output current increases to ~1.5A with proper thermal management. Peak switch current remains clamped at 6.4A, ensuring safe operation during transient overloads. Derating curves in the datasheet confirm 1A is sustainable at 125°C junction temperature with standard 2oz copper.
Does LT8364EMSE#WTRPBF support synchronization to an external clock, and what are the voltage requirements?
Yes, LT8364EMSE#WTRPBF supports external clock synchronization via the SYNC/MODE pin. The input square wave must have valleys below 0.4V and peaks above 1.7V (up to 6V), with 20–80% duty cycle. Synchronization is valid from 300kHz to 2MHz. When synchronized, the device operates in pulse-skip mode - not Burst Mode - to maintain regulation alignment with the external clock, which is essential for noise-sensitive mixed-signal systems like automotive ADAS processors.
How does the BIAS pin improve efficiency in LT8364EMSE#WTRPBF, and what voltage range is acceptable?
The BIAS pin in LT8364EMSE#WTRPBF supplies the INTVCC regulator when 4.4V ≤ BIAS ≤ VIN, diverting up to 98% of INTVCC current away from the main VIN rail. This reduces total input current and conduction losses - especially critical in SEPIC configurations where VOUT may exceed VIN. For example, with VIN = 12V and BIAS = 5V, active-mode IQ drops from 1.2mA to 22µA. BIAS must never exceed VIN or fall below 4.4V to enable sourcing; otherwise, INTVCC defaults to VIN.
Can LT8364EMSE#WTRPBF generate negative output voltages, and how is feedback configured?
Yes, LT8364EMSE#WTRPBF generates negative outputs in inverting configuration using the same FBX pin, which references –0.80V internally. Feedback is set by connecting a resistor divider from VOUT (negative rail) to GND, with FBX tied between R1 and R2. The formula is R1 = R2 × (|VOUT| / 0.80V – 1). This eliminates external op-amps or level-shifters, enabling compact dual-rail supplies for op-amp-based sensor interfaces or RS-485 transceivers.
What is the purpose of the exposed pad on the LT8364EMSE#WTRPBF MSOP package, and how must it be connected?
The exposed pad (Pin 17) on LT8364EMSE#WTRPBF is electrically and thermally connected to PGND/GND and serves as the primary heat dissipation path. It must be soldered to a solid, low-thermal-resistance PCB copper plane - minimum 200mm² recommended - with ≥6 thermal vias to inner ground layers. Failure to solder the pad results in θJA degradation from 45°C/W to >80°C/W, risking thermal shutdown at >600mA loads and violating AEC-Q100 thermal test requirements.
LT8364EMSE#WTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 1.6V
- Voltage - Output (Max):
- 60V (Switch)
- Current - Output:
- 4A (Switch)
- Frequency - Switching:
- 300kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LT8364EMSE#WTRPBF FAQ
1.How can I place an order for LT8364EMSE#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8364EMSE#WTRPBF 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 LT8364EMSE#WTRPBF reliable?
The price and inventory of LT8364EMSE#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8364EMSE#WTRPBF is usually 5 days.
3.What payment methods are accepted for LT8364EMSE#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8364EMSE#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8364EMSE#WTRPBF?
LT8364EMSE#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8364EMSE#WTRPBF 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 LT8364EMSE#WTRPBF?
For technical support, including LT8364EMSE#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8364EMSE#WTRPBF requirements.
6.How does Aetrix verify that LT8364EMSE#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LT8364EMSE#WTRPBF 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 LT8364EMSE#WTRPBF meets industry standards.
7.What is the process for return or replacement of LT8364EMSE#WTRPBF?
All LT8364EMSE#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8364EMSE#WTRPBF, 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 LT8364EMSE#WTRPBF part is unused and in its original packaging.
Return procedure for LT8364EMSE#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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