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Analog Devices Inc. LT8364EMSE#TRPBF
- Part No.:
- LT8364EMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Datasheet:
-
LT8364EMSE#TRPBF.pdf
- Description:
- IC REG BOOST SEPIC 4A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,860
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Product details
Overview
LT8364EMSE#TRPBF from Analog Devices is a current-mode DC/DC converter IC with a 60V, 4A integrated power switch, supporting boost, SEPIC, and inverting topologies from 2.8V to 60V input. It delivers up to 48V output at 1A (VIN=24V), achieves 9µA quiescent current in Burst Mode, maintains <15mV output ripple, and operates across –40°C to +125°C for industrial and automotive power conversion.
For engineers reviewing the LT8364EMSE#TRPBF datasheet, LT8364EMSE#TRPBF pinout, LT8364EMSE#TRPBF application, or LT8364EMSE#TRPBF equivalent, key selection criteria include its single-feedback-pin topology flexibility, programmable 300kHz–2MHz switching frequency, SYNC/MODE pin configurable EMI reduction modes, BIAS pin efficiency optimization, and thermally enhanced 16-lead MSOP package with exposed PGND/GND pad.
Technical Context
The LT8364EMSE#TRPBF implements fixed-frequency current-mode control with dual error amplifiers-one active for positive outputs (FBX = +1.6V reference), the other for negative outputs (FBX = –0.8V reference)-enabling topology reconfiguration without hardware change. Its oscillator supports RT-resistor programming and external synchronization, while frequency foldback and soft-start (2µA charge current) ensure stable startup under varying load and input conditions.
Protection architecture includes overcurrent detection (7.5A trip), thermal shutdown (>170°C), INTVCC UVLO (2.5V/2.65V thresholds), and EN/UVLO hysteresis (1.6V turn-off / 1.68V turn-on). The BIAS pin dynamically selects between VIN and auxiliary supply (4.4V ≤ BIAS ≤ VIN) to power the 3.2V INTVCC regulator, reducing VIN current draw and improving full-load efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports wide-range battery, industrial bus, and automotive inputs without pre-regulation |
| Switch Rating | 60V, 4A - enables high-voltage boost and SEPIC designs up to 48V output with 1A load capability at VIN=24V |
| Quiescent Current | 9µA in Burst Mode - sustains ultra-low-power operation in always-on systems like telematics or sensor nodes |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - allows EMI-sensitive layouts (e.g., medical imaging) or compact magnetics (e.g., portable diagnostics) |
| Feedback Reference | +1.60V (boost/SEPIC) or –0.80V (inverting) - single FBX pin eliminates topology-specific feedback networks |
| Package Thermal Resistance | θJA = 45°C/W (MSOP) - exposed PGND/GND pad requires PCB copper area for 125°C junction operation at full load |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
LT8364EMSE#TRPBF uses a thermally enhanced 16-lead MSOP package (MSE16 variation with 4 pins removed), featuring an exposed pad (Pin 17) that serves as both PGND and GND and must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable & undervoltage lockout input | Resistive divider sets precise turn-on/off thresholds (1.6V/1.68V); <0.2V reduces VIN current to <1µA |
| VIN | Main input supply | Bypassed locally; powers INTVCC unless BIAS is active; absolute max 60V |
| INTVCC | Internal 3.2V LDO output | Must be bypassed with 1µF ceramic; no external loading permitted |
| BIAS | Auxiliary supply for INTVCC | Accepts 4.4V–VIN to offload VIN current and improve efficiency in SEPIC or high-VIN applications |
| VC | Error amplifier output | Connects to external compensation network (R-C) for loop stability across input/output ranges |
| FBX | Topology-agnostic feedback | Sets output voltage via resistor divider; selects +1.6V (positive VOUT) or –0.8V (negative VOUT) reference |
| RT | Frequency programming | Resistor to GND sets fSW from 300kHz to 2MHz; formula: RT(kΩ) = 51.2/fOSC(MHz) – 5.6 |
| SS | Soft-start control | Capacitor to GND controls inductor current ramp rate; internal 2µA charge current and 220Ω discharge path |
| SYNC/MODE | Mode selection & clock sync | Five states: GND→Burst; float→pulse-skip; 100k-to-GND→Burst+SSFM; INTVCC→pulse-skip+SSFM; external clock→sync+pulse-skip |
| SW1/SW2 | Power switch output | 60V, 4A MOSFET drain/source; minimize trace area to reduce EMI |
| PGND/GND | Power & signal ground | Exposed pad (Pin 17) is primary thermal path; connect to continuous copper plane near EN/UVLO and SW pins |
Key Features
| Feature | Design Value |
|---|---|
| Single FBX topology selection | Eliminates need for separate feedback networks when switching between boost, SEPIC, and inverting configurations |
| Burst Mode with 9µA IQ | Maintains regulation at microamp loads while keeping output ripple <15mV-critical for battery-powered IoT sensors |
| Spread Spectrum Frequency Modulation | ±20% frequency dithering at fOSC/256 reduces peak EMI by >10dB without filter redesign |
| Programmable UVLO hysteresis | 80mV built-in hysteresis ensures clean power sequencing in automotive start-stop systems |
| Thermally optimized MSOP | θJC = 10°C/W enables 3W+ dissipation with minimal PCB copper-reduces need for heatsinks in space-constrained modules |
Applications
| Automotive Telematics Power Supply | Industrial 24V-to-48V Boost Converter |
|---|---|
Use Scenario: Powering LTE modems and GPS receivers from vehicle battery (9V–16V) with cold-crank tolerance down to 4.5V. IC Role / Device Role / Timing Role: Primary DC/DC controller managing boost conversion to stable 48V rail; FBX regulates output while SYNC/MODE enables SSFM to pass CISPR 25 Class 5 emissions. Use Value: 9µA quiescent current prevents battery drain during vehicle sleep mode; BIAS pin connected to 12V auxiliary rail improves efficiency by 3.2% at full load. |
Use Scenario: Generating 48V bias for PoE++ injectors or industrial cameras from standard 24V factory bus. IC Role / Device Role / Timing Role: High-current boost controller delivering 1A at 48V; RT resistor sets 600kHz switching to balance efficiency and magnetics size. Use Value: 4A/60V switch eliminates external MOSFET; thermal MSOP package sustains 125°C ambient without derating in enclosed enclosures. |
| Portable Medical Imaging LED Driver | Inverting Supply for Precision ADC Bias |
Use Scenario: Driving high-brightness LEDs in handheld ultrasound probes requiring low-noise, high-efficiency 36V supply from 3.7V Li-ion. IC Role / Device Role / Timing Role: SEPIC converter providing non-inverting 36V output with input/output isolation; Burst Mode extends battery life during standby. Use Value: Single FBX pin simplifies layout vs dual-controller solutions; <15mV ripple avoids LED current modulation artifacts in image capture. |
Use Scenario: Generating –5V rail for SAR ADC reference buffers in data acquisition systems where ground-referenced noise must be minimized. IC Role / Device Role / Timing Role: Inverting converter using –0.8V FBX reference; VC compensation network optimized for fast transient response to analog front-end switching. Use Value: Low 9µA IQ prevents interference with sensitive analog measurements; exposed GND pad reduces ground bounce in mixed-signal PCBs. |
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 switch; requires external MOSFETs | Better suited for bidirectional power flow and higher efficiency above 3A, but needs more board area and gate drive design | Select when >3A output or input voltage may exceed output (e.g., 12V–48V bidirectional bus) |
| TPS61088RHLR | Integrated 10A switch; fixed 500kHz/1MHz frequency; no BIAS pin or SSFM; max input 18V | Lower cost for consumer-grade 5V–12V boost, but lacks automotive temp range, UVLO programming, and topology flexibility | Select for cost-sensitive, non-automotive applications with VIN < 18V and no EMI certification requirements |
Compared with LTC3789EMSE#TRPBF and TPS61088RHLR, the LT8364EMSE#TRPBF uniquely combines integrated 4A/60V switching, single-pin topology selection, programmable EMI reduction, and –40°C to +125°C operation-making it optimal for space-constrained, high-reliability boost/SEPIC/inverting designs where component count and thermal performance are critical.
Availability
LT8364EMSE#TRPBF is available at Aetrix Electronics and suitable for automotive telematics, industrial 24V-to-48V power conversion, portable medical imaging, and precision analog biasing requiring stable component supply across extended temperature and high-reliability environments.
Supply support for LT8364EMSE#TRPBF 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, and automotive safety markets since 1965.
The LT8364 belongs to Analog Devices' Power by Linear™ family of monolithic DC/DC converters designed for high-voltage, wide-input industrial and automotive power systems where reliability, low IQ, and topology flexibility are essential.
FAQ
What is the maximum output voltage achievable with LT8364EMSE#TRPBF in boost configuration?
The LT8364EMSE#TRPBF supports output voltages up to 60V in boost topology, limited by its 60V switch rating and external component selection. In the typical 48V output application shown in the datasheet, it delivers 1A at VIN=24V with >90% efficiency. Output voltage is set via FBX resistor divider using the +1.60V reference, and practical limits depend on diode rating, inductor saturation, and PCB layout parasitics-not the IC itself.
Can LT8364EMSE#TRPBF operate in SEPIC configuration with input voltage higher than output voltage?
Yes, the LT8364EMSE#TRPBF supports SEPIC operation across its full 2.8V–60V input range regardless of output voltage magnitude. When VIN > VOUT (e.g., 36V input to 12V output), the BIAS pin can be connected to VOUT to power INTVCC, improving efficiency by reducing VIN current draw. The single FBX pin and current-mode control maintain regulation stability in both step-up and step-down SEPIC modes.
How does the SYNC/MODE pin configure Spread Spectrum Frequency Modulation on LT8364EMSE#TRPBF?
Spread Spectrum Frequency Modulation (SSFM) is enabled on LT8364EMSE#TRPBF by connecting the SYNC/MODE pin to INTVCC (or >1.7V) for pulse-skip + SSFM operation, or to GND via a 100kΩ resistor for Burst + SSFM mode. SSFM dithers the switching frequency by ±20% at fOSC/256, reducing EMI peaks without altering average frequency-verified in CISPR 25 testing for automotive compliance.
What is the minimum recommended FBX divider resistor value for LT8364EMSE#TRPBF to maintain light-load efficiency?
The LT8364EMSE#TRPBF datasheet recommends FBX divider resistors between 25kΩ and 1MΩ. For optimal light-load efficiency, values ≥200kΩ are preferred: higher resistance reduces current drawn from the output rail, minimizing the effective load seen by Burst Mode operation. At 1MΩ total divider, feedback current drops to ~1.6µA for a 1.6V reference-well below the 9µA quiescent current threshold.
Does LT8364EMSE#TRPBF require external components for thermal management in its MSOP package?
Yes-the LT8364EMSE#TRPBF's 16-lead MSOP package relies on its exposed PGND/GND pad (Pin 17) for thermal conduction. This pad must be soldered to a continuous PCB copper plane with ≥4 thermal vias (0.3mm diameter) connecting to inner or back-side ground layers. Without this, θJA rises significantly, limiting continuous output current at 125°C ambient. No heatsink is required if PCB thermal design meets the 45°C/W specification.
LT8364EMSE#TRPBF 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
- 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 ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LT8364EMSE#TRPBF FAQ
1.How can I place an order for LT8364EMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8364EMSE#TRPBF 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#TRPBF reliable?
The price and inventory of LT8364EMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8364EMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8364EMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8364EMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8364EMSE#TRPBF?
LT8364EMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8364EMSE#TRPBF 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#TRPBF?
For technical support, including LT8364EMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8364EMSE#TRPBF requirements.
6.How does Aetrix verify that LT8364EMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8364EMSE#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8364EMSE#TRPBF?
All LT8364EMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8364EMSE#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LT8364EMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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