My Inquiry
My Account
Analog Devices Inc. LT8364HDE#PBF
- Part No.:
- LT8364HDE#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LT8364HDE#PBF.pdf
- Description:
- IC REG BOOST SEPIC 4A 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:278
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT8364HDE#PBF from Analog Devices is a current-mode DC/DC converter IC with a 60V, 4A internal power switch, operating from 2.8V to 60V input. It supports boost, SEPIC, and inverting topologies via a single FBX feedback pin, delivers up to 48V output in typical boost configurations, and achieves 9µA quiescent current in Burst Mode - enabling long battery life in automotive and portable medical diagnostics systems.
For engineers reviewing the LT8364HDE#PBF datasheet, LT8364HDE#PBF pinout, LT8364HDE#PBF application, or LT8364HDE#PBF equivalent, key selection considerations include its –40°C to 150°C junction temperature rating, programmable 300kHz–2MHz switching frequency, BIAS pin for efficiency optimization, spread-spectrum EMI reduction, and dual-mode (Burst/Pulse-Skip) operation controlled by SYNC/MODE pin logic levels.
Technical Context
The LT8364HDE#PBF implements fixed-frequency current-mode control with external RT-resistor programmability and dual error amplifiers - one active for positive outputs (1.60V reference), the other for negative outputs (–0.80V reference). Its unique single-FBX architecture enables topology reconfiguration without hardware changes.
It integrates frequency foldback, programmable soft-start (2µA charge current), overcurrent protection (7.5A trip), thermal shutdown (>170°C), and intelligent INTVCC sourcing - selecting between VIN and BIAS (4.4V ≤ BIAS ≤ VIN) to minimize input supply loading and maximize efficiency across load ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports wide-range industrial, automotive, and telecom inputs including 12V/24V/48V bus systems. |
| Switch Rating | 60V VDS, 4A continuous - handles high-voltage boost and SEPIC applications with margin for transients. |
| Quiescent Current | 9µA in Burst Mode - sustains ultra-low-power standby in battery-powered diagnostic equipment. |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - enables compact magnetics and EMI filtering while avoiding AM band interference. |
| Operating Junction Temp | –40°C to 150°C - qualified for under-hood automotive and high-ambient industrial environments. |
| Feedback Reference | +1.60V or –0.80V (FBX-selectable) - eliminates need for separate positive/negative feedback networks in dual-rail designs. |
| BIAS Pin Function | Supplies INTVCC when 4.4V ≤ BIAS ≤ VIN - reduces VIN current draw and improves full-load efficiency by >3% in SEPIC configurations. |
Pinout & Package
LT8364HDE#PBF is housed in a thermally enhanced 12-lead (4mm × 3mm) plastic DFN package with exposed PGND/GND pad (Pin 13) requiring soldering to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable / Undervoltage Lockout Input | Shuts down IC below 1.6V; resumes at 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 low-ESR capacitor placement adjacent to exposed pad. |
| SW1/SW2 | Internal Power Switch Output | Drives external inductor/diode network; 60V/4A rating - minimized trace area critical for EMI control. |
| FBX | Topology-Agnostic Feedback Input | Sets output voltage to +1.60V or –0.80V reference - enables boost, SEPIC, or inverting operation with same pin and resistor divider. |
| SYNC/MODE | Mode Selection & Clock Input | Configures Burst Mode (<0.14V), Pulse-Skip (float), Sync (external clock), or SSFM (≥1.7V) - no external components needed for mode switching. |
| BIAS | Secondary INTVCC Supply Input | Reduces VIN loading when 4.4V ≤ BIAS ≤ VIN - improves efficiency in high-input-voltage SEPIC or buck-boost applications. |
| SS | Soft-Start Control | 2µA constant-current ramp - controls inrush current during startup; discharged internally during fault or shutdown. |
| PGND/GND | Power & Signal Ground | Exposed pad (Pin 13) must be soldered to solid copper plane - primary thermal path and low-impedance return for switch current. |
Key Features
| Feature | Design Value |
|---|---|
| Single-FBX Topology Flexibility | Enables boost, SEPIC, and inverting configurations using identical layout and feedback network - reduces BOM and design iteration time. |
| Burst Mode with 9µA IQ | Maintains regulation at microamp loads while holding output ripple <15mV - extends runtime in always-on portable electronics. |
| Spread Spectrum Frequency Modulation | ±14–28% frequency deviation at fOSC/256 rate - lowers peak EMI by >10dB without added filtering components. |
| Programmable UVLO Threshold | Resistive divider on EN/UVLO sets precise turn-on/off voltages (e.g., 8V–10V window) - prevents erratic operation during cold-cranking or brownouts. |
| Thermally Enhanced DFN | θJA = 43°C/W, θJC = 5.5°C/W - supports 4A continuous switching in compact 4mm × 3mm footprint without heatsink. |
Applications
| Automotive Infotainment Power | Portable Medical Imaging |
|---|---|
|
Use Scenario: Generating isolated 48V rail from 12V vehicle battery for LCD backlight drivers in head units and digital dashboards. IC Role / Device Role / Timing Role: Primary DC/DC controller managing boost conversion with programmable soft-start to avoid ignition noise coupling. Use Value: AEC-Q100 H-grade qualification ensures reliability at 150°C junction temperature; Burst Mode extends display-on time during key-off battery drain. |
Use Scenario: Powering CCD/CMOS sensor bias rails and analog front-end amplifiers in handheld ultrasound probes. IC Role / Device Role / Timing Role: High-efficiency, low-noise inverting converter generating –15V from 3.3V LDO for precision analog signal conditioning. Use Value: Single FBX pin simplifies negative rail design; 9µA quiescent current preserves battery life between imaging sessions. |
| Industrial Telecom Interface | Test & Measurement Equipment |
|
Use Scenario: Providing 36V auxiliary supply for PoE midspan injectors and optical transceiver modules in 48V backplane systems. IC Role / Device Role / Timing Role: SEPIC regulator maintaining regulation during input dips (e.g., 36V–57V range) with synchronous clocking to reduce spectral peaks. Use Value: SYNC/MODE pin enables EMI-compliant spread-spectrum operation without sacrificing transient response or efficiency. |
Use Scenario: Generating stable ±15V rails for op-amp-based signal generators and oscilloscope front-ends requiring low-noise, fast transient response. IC Role / Device Role / Timing Role: Dual-output controller (positive + negative) using shared FBX and compensation network - minimizes component count and layout area. Use Value: Programmable frequency avoids interference with internal sampling clocks; BIAS pin improves PSRR by reducing VIN supply impedance. |
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; supports higher output current (10A+); no integrated 4A switch. | Better suited for high-power, multi-phase designs where thermal management allows discrete FETs. | Select LTC3789EMSE#PBF when >4A output current or >100W power is required; LT8364HDE#PBF offers lower BOM count and smaller footprint for ≤4A applications. |
| LT8330EDD#PBF | Lower switch rating (60V/1.5A); fixed 2MHz frequency; no BIAS pin or SSFM capability. | Targeted at space-constrained, low-power applications where EMI and efficiency trade-offs favor simplicity. | Choose LT8330EDD#PBF only for sub-1A loads with fixed 2MHz timing; LT8364HDE#PBF provides superior flexibility, thermal robustness, and feature set for demanding industrial use. |
Compared with LTC3789EMSE#PBF and LT8330EDD#PBF, the LT8364HDE#PBF uniquely combines integrated 4A/60V switching, topology flexibility, AEC-Q100 H-grade reliability, and spread-spectrum EMI control - making it optimal for compact, high-reliability, medium-power DC/DC designs where board space and thermal constraints limit discrete solutions.
Availability
LT8364HDE#PBF is available at Aetrix Electronics and suitable for automotive infotainment, portable medical diagnostics, industrial telecom interfaces, and test & measurement equipment requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LT8364HDE#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 industrial, automotive, communications, and healthcare markets with precision power, signal chain, and RF solutions.
The LT8364 product line delivers highly integrated, thermally robust DC/DC controllers for wide-input, high-reliability applications - designed specifically for automotive under-hood, portable medical, and industrial edge equipment where efficiency, EMI, and temperature resilience are critical.
FAQ
What is the maximum junction temperature rating for the LT8364HDE#PBF?
The LT8364HDE#PBF is rated for operation from –40°C to 150°C junction temperature and is guaranteed across this full range per AEC-Q100 Grade H specifications. This makes it suitable for under-hood automotive applications and high-ambient industrial environments where thermal derating of standard-grade parts would otherwise be required. The LT8364HDE#PBF's thermal resistance (θJA = 43°C/W) supports sustained 4A switching within this envelope when properly mounted to a thermal pad.
How does the FBX pin enable both positive and negative output configurations in the LT8364HDE#PBF?
The LT8364HDE#PBF uses an internal dual-amplifier architecture where FBX connects to either a +1.60V reference (for boost/SEPIC) or a –0.80V reference (for inverting topologies), selected automatically based on the voltage polarity applied to the feedback divider. When the divider pulls FBX above 0V, amplifier A1 activates for positive regulation; when pulled below 0V, amplifier A2 activates for negative regulation - eliminating external mode-selection logic. This behavior is confirmed in the LT8364HDE#PBF block diagram and electrical characteristics table.
Can the LT8364HDE#PBF synchronize to an external clock while operating in Burst Mode?
No - when the SYNC/MODE pin is driven by an external clock signal, the LT8364HDE#PBF disables Burst Mode and operates in pulse-skip mode instead, maintaining regulation by skipping cycles aligned to the external clock. Burst Mode is only active when SYNC/MODE is pulled below 0.14V (e.g., grounded). This behavior is explicitly defined in the Pin Functions section and Applications Information of the LT8364HDE#PBF datasheet.
What is the purpose of the BIAS pin on the LT8364HDE#PBF, and how does it improve efficiency?
The BIAS pin on the LT8364HDE#PBF supplies the internal 3.2V INTVCC regulator when 4.4V ≤ BIAS ≤ VIN, diverting that current away from the main VIN supply. In SEPIC or inverting configurations where VOUT > VIN, connecting BIAS to VOUT reduces VIN current draw by up to 1.2mA at full load - improving overall efficiency by 3–5% and lowering thermal stress on the input stage. This function is validated in the Electrical Characteristics table and INTVCC Regulator section of the LT8364HDE#PBF datasheet.
Does the LT8364HDE#PBF support spread-spectrum frequency modulation (SSFM), and how is it enabled?
Yes - the LT8364HDE#PBF supports SSFM with ±14–28% frequency deviation at fOSC/256 modulation rate. It is enabled by pulling the SYNC/MODE pin to INTVCC (or >1.7V) for Pulse-Skip + SSFM operation, or by connecting a 100kΩ resistor from SYNC/MODE to GND for Burst + SSFM transition at heavy loads. SSFM reduces peak EMI emissions without compromising regulation or efficiency, as verified in the Typical Performance Characteristics plots (Figure G16).
LT8364HDE#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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (4x3)
LT8364HDE#PBF FAQ
1.How can I place an order for LT8364HDE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8364HDE#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 LT8364HDE#PBF reliable?
The price and inventory of LT8364HDE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8364HDE#PBF is usually 5 days.
3.What payment methods are accepted for LT8364HDE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8364HDE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8364HDE#PBF?
LT8364HDE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8364HDE#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 LT8364HDE#PBF?
For technical support, including LT8364HDE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8364HDE#PBF requirements.
6.How does Aetrix verify that LT8364HDE#PBF is sourced from the original manufacturer or authorized distributors?
All LT8364HDE#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 LT8364HDE#PBF meets industry standards.
7.What is the process for return or replacement of LT8364HDE#PBF?
All LT8364HDE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8364HDE#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 LT8364HDE#PBF part is unused and in its original packaging.
Return procedure for LT8364HDE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT8364HDE#PBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
