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Analog Devices Inc. LT8364EDE#PBF
- Part No.:
- LT8364EDE#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LT8364EDE#PBF.pdf
- Description:
- IC REG BOOST SEPIC 4A 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,072
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Product details
Overview
LT8364EDE#PBF from Analog Devices is a current-mode DC/DC converter IC with a 60V, 4A internal 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 junction temperature - used in automotive infotainment power rails and portable medical imaging subsystems.
For engineers reviewing the LT8364EDE#PBF datasheet, LT8364EDE#PBF pinout, LT8364EDE#PBF application, or LT8364EDE#PBF equivalent, key selection criteria include its single FBX-pin topology flexibility, programmable 300kHz–2MHz switching frequency, BIAS-pin efficiency optimization, SYNC/MODE multi-mode control, and thermally enhanced 12-lead 4mm × 3mm DFN package with exposed PGND/GND pad.
Technical Context
The LT8364EDE#PBF implements fixed-frequency current-mode control with dual error amplifiers (A1 for boost/SEPIC, A2 for inverting) selected automatically based on FBX voltage polarity (1.60V for positive, –0.80V for negative regulation). Its oscillator frequency is resistor-programmed via RT pin and supports synchronization, spread-spectrum modulation, and five distinct operating modes via SYNC/MODE pin logic thresholds.
Protection includes overcurrent detection (7.5A trip), thermal shutdown (>170°C), INTVCC UVLO (2.5V/2.65V), and EN/UVLO with 80mV hysteresis (1.545V falling / 1.68V rising). The BIAS pin supplies INTVCC when 4.4V ≤ BIAS ≤ VIN, reducing VIN current draw and improving full-load efficiency in SEPIC or high-VIN boost configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports wide-range industrial battery inputs and automotive cold-crank (6V) to load-dump (60V) transients. |
| Switch Rating | 60V VDS, 4A continuous - enables 48V boost outputs from 12V/24V sources without external MOSFETs. |
| Quiescent Current | 9µA in Burst Mode - sustains >90% efficiency at 1mA load, critical for always-on automotive modules. |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - allows EMI-sensitive designs to avoid AM band or align with system clocks. |
| FBX Regulation Voltage | +1.60V (boost/SEPIC) or –0.80V (inverting) - single feedback pin eliminates topology-specific IC variants. |
| Package Thermal Resistance | θJA = 43°C/W, θJC = 5.5°C/W - exposed pad soldered to PCB ground plane enables 3W+ continuous dissipation in compact layout. |
| Operating Temperature | –40°C to +125°C (junction) - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
LT8364EDE#PBF uses a thermally enhanced 12-lead (4mm × 3mm) plastic DFN package with exposed PGND/GND pad (Pin 13) requiring soldering to PCB copper for thermal and electrical integrity. Pin count and layout match the MSE16 variant with four pins removed (NC, two SW, GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1, SW2 | Internal Power Switch Drain Outputs | Parallel-connected 60V/4A MOSFET drains - minimize trace area to reduce EMI; connect directly to inductor and diode anode/cathode. |
| FBX | Topology-Agnostic Feedback Input | Detects +1.60V (positive VOUT) or –0.80V (negative VOUT) - selects internal error amplifier and sets regulation point without external configuration. |
| SYNC/MODE | Multi-Function Control Input | Five states: GND = Burst Mode; float = pulse-skip; >1.7V = pulse-skip + SSFM; 100k-to-GND = Burst + SSFM; external clock = sync + pulse-skip. |
| BIAS | Secondary INTVCC Supply Input | Accepts 4.4V–VIN to power 3.2V INTVCC regulator - reduces VIN current by >95%, boosting efficiency in high-VIN/low-VOUT SEPIC. |
| EN/UVLO | Enable & Programmable Undervoltage Lockout | 1.60V turn-off / 1.68V turn-on threshold with 80mV hysteresis - enables precise system-level brownout protection using resistive divider. |
| PGND, GND | Power & Signal Ground Reference | Exposed pad (Pin 13) is common PGND/GND - must be soldered to solid copper plane for thermal relief and low-noise reference return path. |
Key Features
| Feature | Design Value |
|---|---|
| Single-FB Topology Flexibility | One feedback pin configures boost, SEPIC, or inverting operation - eliminates BOM variants and simplifies schematic reuse across power architectures. |
| Burst Mode with 9µA IQ | Maintains regulation while drawing only 9µA from VIN - extends battery life in portable diagnostics and telematics with intermittent wake-up cycles. |
| Programmable Spread Spectrum | ±14–28% frequency deviation modulated at fOSC/256 - reduces peak EMI by >10dB without adding filtering components. |
| External Compensation (VC) | Direct access to error amplifier output - enables custom loop compensation for wide VIN/VOUT ranges and fast transient response in servo drives. |
| Soft-Start with Fault Reset | 2µA constant-current charge into SS pin; 220Ω pull-down during fault - controls inrush current and auto-recovers after overcurrent or thermal events. |
Applications
| Automotive Infotainment Display Backlight | Portable Ultrasound Transmitter Bias |
|---|---|
|
Use Scenario: Generating 40–60V bias for LED backlight drivers in head-unit LCDs, powered from 9–16V vehicle battery with cold-crank tolerance. IC Role / Device Role / Timing Role: Boost converter with programmable 500kHz–1.2MHz switching - avoids AM radio band while maintaining tight output regulation during engine start. Use Value: 9µA Burst Mode IQ preserves battery during overnight parking; BIAS pin fed from 12V rail cuts VIN current by 70%, reducing thermal stress on front-end fuse. |
Use Scenario: Providing ±24V analog bias for piezoelectric transducer driver stages in handheld ultrasound probes, operating from single-cell Li-ion (2.8–4.2V). IC Role / Device Role / Timing Role: Inverting converter with –0.80V FBX reference - generates clean negative rail without extra op-amps or charge pumps. Use Value: Single FBX pin eliminates topology-specific design iterations; 4A switch handles 500mA peak transducer pulses without derating; DFN package fits <8mm² board area. |
| Industrial PLC I/O Module Isolated Supply | Medical Point-of-Care Glucose Analyzer |
|
Use Scenario: Generating isolated 5V/3.3V auxiliary rails from 24V DC field bus, requiring robustness against 60V transients and 85°C ambient. IC Role / Device Role / Timing Role: SEPIC converter with BIAS pin tied to output - improves efficiency by 8% at full load and enables seamless operation during input dips. Use Value: –40°C to +125°C rating ensures reliability in uncooled enclosures; programmable UVLO prevents brownout resets during motor startup surges. |
Use Scenario: Powering electrochemical sensor interface circuitry in battery-operated glucose meters, where standby current must be <15µA. IC Role / Device Role / Timing Role: Low-IQ boost converter with 300kHz switching - balances efficiency and size for coin-cell operation with minimal output capacitance. Use Value: 9µA IQ extends 200mAh CR2032 battery life to >1 year in sleep mode; 15mV ripple ensures stable ADC reference for sub-1mg/dL measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8362EDE#PBF | 2A switch (vs. 4A), identical topology support and pinout - lacks BIAS pin and SSFM capability. | Suitable for ≤500mA output loads; cannot match LT8364EDE#PBF's efficiency in high-current SEPIC or 48V boost. | Select when cost sensitivity outweighs current headroom and advanced EMI features. |
| MAX25203ATPA/VY+ | Automotive-grade 60V/3.5A buck-boost with integrated FETs - supports only buck-boost (not SEPIC/inverting); no BIAS pin. | Requires different compensation and layout; lacks single-FBX topology flexibility and Burst Mode IQ. | Choose for AEC-Q100-compliant buck-boost-only systems where footprint compatibility is secondary. |
Compared with LT8362EDE#PBF and MAX25203ATPA/VY+, the LT8364EDE#PBF uniquely combines 4A switch current, topology-agnostic FBX architecture, BIAS-pin efficiency enhancement, and spread-spectrum EMI reduction - making it optimal for space-constrained, multi-rail industrial and portable medical designs demanding both ultra-low IQ and high output power.
Availability
LT8364EDE#PBF is available at Aetrix Electronics and suitable for automotive infotainment, portable medical imaging, industrial PLC I/O modules, and battery-powered diagnostic equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for LT8364EDE#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 precision instrumentation, industrial automation, and automotive safety markets since 1965.
The LT8364EDE#PBF belongs to Analog Devices' Power by Linear™ family of high-voltage monolithic DC/DC converters, designed specifically for rugged, wide-input industrial and automotive power conversion where reliability, thermal performance, and topology flexibility are critical.
FAQ
What is the maximum output voltage achievable with LT8364EDE#PBF in boost configuration?
The LT8364EDE#PBF supports output voltages up to 60V in boost mode, limited by its 60V-rated internal switch and external component selection. Typical validated designs achieve 48V at 1A (VIN=24V), with proper Schottky diode (e.g., 100V rating) and output capacitor voltage derating. Exceeding 60V risks switch breakdown and is not supported.
Does LT8364EDE#PBF require external compensation components?
Yes, the LT8364EDE#PBF requires external compensation via the VC pin. A Type II or Type III network (resistor + capacitor + optional zero capacitor) must be connected between VC and GND to stabilize the current-mode control loop across the full VIN/VOUT range and load conditions specified in the datasheet.
Can LT8364EDE#PBF operate in discontinuous conduction mode (DCM)?
Yes, the LT8364EDE#PBF inherently supports DCM operation. Its minimum on-time (85ns typ.) and off-time (50ns typ.) allow stable DCM down to very light loads, especially in Burst Mode. DCM is automatically entered when inductor current falls to zero before the next switching cycle - no configuration required.
How does the BIAS pin improve efficiency in LT8364EDE#PBF?
The BIAS pin supplies the 3.2V INTVCC regulator when 4.4V ≤ BIAS ≤ VIN, diverting >95% of INTVCC current away from VIN. In SEPIC applications where VOUT ≈ VIN, connecting BIAS to VOUT reduces total input current and associated conduction losses - measured efficiency gains exceed 8% at full load.
Is LT8364EDE#PBF pin-compatible with other LT836x variants?
The LT8364EDE#PBF shares identical pinout and footprint with LT8362EDE#PBF and LT8361EDE#PBF in the 12-lead DFN package. However, differences in switch current (4A vs. 2A/1.5A), BIAS pin functionality, and SSFM support mean direct substitution requires validation of thermal, current, and feature requirements in the target application.
LT8364EDE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-WFDFN 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 ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (4x3)
LT8364EDE#PBF FAQ
1.How can I place an order for LT8364EDE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8364EDE#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 LT8364EDE#PBF reliable?
The price and inventory of LT8364EDE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8364EDE#PBF is usually 5 days.
3.What payment methods are accepted for LT8364EDE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8364EDE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8364EDE#PBF?
LT8364EDE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8364EDE#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 LT8364EDE#PBF?
For technical support, including LT8364EDE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8364EDE#PBF requirements.
6.How does Aetrix verify that LT8364EDE#PBF is sourced from the original manufacturer or authorized distributors?
All LT8364EDE#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 LT8364EDE#PBF meets industry standards.
7.What is the process for return or replacement of LT8364EDE#PBF?
All LT8364EDE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8364EDE#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 LT8364EDE#PBF part is unused and in its original packaging.
Return procedure for LT8364EDE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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