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Analog Devices Inc. LT8364EDE#TRPBF
- Part No.:
- LT8364EDE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LT8364EDE#TRPBF.pdf
- Description:
- IC REG BOOST SEPIC 4A 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,293
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Product details
Overview
LT8364EDE#TRPBF from Analog Devices is a 60V, 4A current-mode DC/DC converter IC supporting boost, SEPIC, and inverting topologies from 2.8V to 60V input. It delivers ultralow 9µA quiescent current in Burst Mode, maintains <15mV output ripple, and operates up to 2MHz with programmable frequency via RT pin - used in automotive LED drivers and industrial 48V power rails.
For engineers reviewing the LT8364EDE#TRPBF datasheet, LT8364EDE#TRPBF pinout, LT8364EDE#TRPBF application, or LT8364EDE#TRPBF equivalent, key selection factors include its single FBX pin enabling both positive/negative output programming, BIAS pin for efficiency optimization, SYNC/MODE pin for EMI-reducing spread-spectrum modulation, and AEC-Q100 qualification for automotive use.
Technical Context
The LT8364EDE#TRPBF implements fixed-frequency current-mode control with dual error amplifiers (A1/A2) selected automatically based on FBX voltage polarity - +1.60V reference for boost/SEPIC, –0.80V for inverting configurations. Its oscillator supports 300kHz–2MHz operation via RT resistor, with frequency foldback and programmable soft-start to manage inrush current.
Switching logic includes integrated 60V/4A MOSFETs (SW1/SW2), thermal shutdown at >170°C, overcurrent protection at 7.5A, and UVLO with 1.6V turn-on threshold and 80mV hysteresis. The BIAS pin supplies INTVCC when 4.4V ≤ BIAS ≤ VIN, reducing VIN current draw and improving full-load efficiency by up to 3%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports wide-range battery and industrial bus inputs without pre-regulation. |
| Quiescent Current (Burst Mode) | 9µA - enables >1-year battery life in always-on IoT sensors and automotive standby systems. |
| Switch Rating | 60V, 4A - handles 48V telecom outputs and 36V automotive transients with margin. |
| Feedback Reference | +1.60V or –0.80V - single FBX pin configures topology without external logic or resistors. |
| Switching Frequency Range | 300kHz to 2MHz - balances EMI filtering size vs. efficiency; RT resistor sets exact value. |
| Package Thermal Resistance | θJA = 43°C/W (DFN) - enables 3.5W continuous power dissipation at 25°C ambient with 2-layer PCB. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
LT8364EDE#TRPBF uses 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; 80mV hysteresis prevents oscillation during brownout; <0.2V reduces VIN current to <1µA. |
| VIN | Main Input Supply | Accepts 2.8V–60V; must be bypassed locally with low-ESR capacitor near exposed pad. |
| INTVCC | Internal 3.2V Regulator Output | Powers internal circuitry; requires 1µF ceramic cap to GND; cannot be externally loaded. |
| BIAS | Secondary Input for INTVCC | Supplies INTVCC when 4.4V ≤ BIAS ≤ VIN - reduces VIN current draw and improves efficiency. |
| VC | Error Amplifier Output | Connects to external compensation network (RC/CC); controls peak switch current. |
| FBX | Topology-Agnostic Feedback Pin | Regulates to +1.60V (boost/SEPIC) or –0.80V (inverting); determines amplifier selection and mode. |
| RT | Frequency Programming Input | Resistor to GND sets switching frequency from 300kHz to 2MHz per RT = 51.2/fOSC – 5.6 (kΩ). |
| SS | Soft-Start Control | Capacitor to GND controls inductor current ramp rate; 2µA charge current enables precise startup timing. |
| SYNC/MODE | Mode Selection & Clock Sync | Selects Burst/Pulse-Skip/SSFM modes or synchronizes to external clock (300kHz–2MHz range). |
| SW1, SW2 | Power Switch Outputs | 60V/4A internal MOSFET drains; minimize trace area to reduce EMI radiation. |
| PGND/GND | Power & Signal Ground | Exposed pad (Pin 13) is primary thermal path and low-impedance return for high di/dt currents. |
Key Features
| Feature | Design Value |
|---|---|
| Single-pin topology selection | FBX pin auto-selects +1.60V or –0.80V reference - eliminates external mode-setting logic and saves board space. |
| Spread-spectrum modulation | 20% frequency deviation at fOSC/256 - reduces peak EMI by >10dB without added filtering components. |
| Programmable undervoltage lockout | Resistive divider on EN/UVLO sets custom turn-on/off thresholds - enables system-level brownout protection. |
| Thermally optimized DFN | θJC = 5.5°C/W - allows 3.5W power dissipation with minimal heatsinking in compact 4mm × 3mm footprint. |
| Burst Mode efficiency | 9µA IQ with <15mV ripple - sustains regulation in battery-powered applications while extending runtime. |
Applications
| Automotive LED Headlamp Driver | Industrial 48V Boost Converter |
|---|---|
Use Scenario: Driving high-brightness LEDs from 12V vehicle battery with PWM dimming and thermal derating. IC Role / Device Role / Timing Role: Primary DC/DC controller regulating constant-current LED string; FBX senses current-sense voltage; SYNC/MODE enables SSFM for EMI compliance. Use Value: 60V switch rating withstands load-dump transients; 9µA Burst Mode extends battery life during parking mode. |
Use Scenario: Generating stable 48V rail from 24V industrial bus for PoE++ switches and motor controllers. IC Role / Device Role / Timing Role: High-efficiency boost converter with programmable 1MHz switching; BIAS pin connected to 48V output to reduce input current. Use Value: 4A switch supports >30W output; thermal DFN package enables convection-cooled design in confined enclosures. |
| Portable Medical Imaging Sensor | Telecom DC-DC Intermediate Bus |
Use Scenario: Powering CCD/CMOS image sensors in handheld ultrasound devices requiring low-noise, low-ripple bias supplies. IC Role / Device Role / Timing Role: Inverting configuration generating –5V from 3.3V battery; FBX regulates negative output; soft-start prevents sensor reset glitches. Use Value: Single FBX pin simplifies layout; 15mV ripple meets analog sensor noise floor requirements. |
Use Scenario: Stepping up 12V telecom shelf voltage to 48V intermediate bus for downstream point-of-load converters. IC Role / Device Role / Timing Role: SEPIC converter handling wide input variation (9–15V); RT pin set to 500kHz for optimal magnetics size. Use Value: 2.8V–60V input range accommodates degraded input; AEC-Q100 qualification ensures reliability in carrier-grade equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3789EMSE#TRPBF | 4-switch synchronous buck-boost; no integrated switch; requires external MOSFETs; 4.5V–60V input. | Higher efficiency (>95%) at medium-to-heavy loads but larger solution size and higher BOM cost. | Choose LTC3789 for >5A output or where synchronous rectification is mandatory; LT8364EDE#TRPBF preferred for compact, cost-sensitive 1–3A designs. |
| LM5122MMX/NOPB | Current-mode boost controller; external MOSFET; 3V–75V input; no BIAS pin or SSFM; 100µA IQ. | Lacks integrated switch and ultralow IQ - unsuitable for battery-critical applications. | Choose LM5122 for high-voltage (>60V) boost or where external FETs enable thermal partitioning; LT8364EDE#TRPBF offers lower system cost and smaller footprint. |
Compared with LTC3789EMSE#TRPBF and LM5122MMX/NOPB, the LT8364EDE#TRPBF provides the only monolithic 4A/60V solution with sub-10µA quiescent current, single-pin topology selection, and integrated spread-spectrum EMI reduction - making it optimal for space-constrained, battery-aware, and automotive-compliant designs.
Availability
LT8364EDE#TRPBF is available at Aetrix Electronics and suitable for automotive lighting, industrial 48V power rails, and portable medical imaging requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LT8364EDE#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.
The LT8364 product line delivers monolithic high-voltage DC/DC converters with integrated switches and advanced power management features - designed specifically for automotive, industrial, and telecom applications demanding wide input range, low IQ, and robust EMI performance.
FAQ
What is the maximum output power achievable with LT8364EDE#TRPBF in a 4mm × 3mm DFN package?
The LT8364EDE#TRPBF supports up to 3.5W continuous output power at 25°C ambient with standard 2-layer PCB and soldered exposed pad, based on its θJA = 43°C/W and 125°C max junction temperature. At 48V output and 12V input, this corresponds to ~700mA load current. Higher power requires forced air cooling or thermal vias to inner ground planes.
How does the LT8364EDE#TRPBF select between boost and inverting configurations?
The LT8364EDE#TRPBF automatically selects topology based on FBX pin voltage: when FBX is pulled above 0V (e.g., via resistor divider from positive VOUT), it regulates to +1.60V and operates as boost or SEPIC; when FBX is pulled below 0V (e.g., from negative VOUT), it regulates to –0.80V and operates as inverting converter. No external mode pins or configuration registers are needed.
Can the LT8364EDE#TRPBF synchronize to an external clock while maintaining Burst Mode operation?
No - when the SYNC/MODE pin is driven by an external clock, the LT8364EDE#TRPBF disables Burst Mode and enters pulse-skipping mode to maintain synchronization. Burst Mode is only active when SYNC/MODE is tied <0.14V (e.g., grounded) or configured with 100kΩ to GND for Burst/SSFM hybrid operation.
What is the minimum recommended FBX divider resistor value for LT8364EDE#TRPBF?
The LT8364EDE#TRPBF specifies FBX pin current of ±10nA, allowing FBX divider resistors up to 1MΩ. However, values ≥250kΩ are recommended to minimize load current impact on light-load efficiency. For a 48V boost output, R2 = 100kΩ and R1 = 2.9MΩ yields 1.60V at FBX with <200nA divider current.
Does LT8364EDE#TRPBF require external compensation components?
Yes - the LT8364EDE#TRPBF requires external compensation components connected to the VC pin (typically RC network from VC to GND and CC from VC to FBX) to stabilize the control loop across input/output variations. The datasheet provides design equations and example values for common boost/SEPIC/inverting configurations.
LT8364EDE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-WFDFN 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:
- 12-DFN (4x3)
LT8364EDE#TRPBF FAQ
1.How can I place an order for LT8364EDE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8364EDE#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 LT8364EDE#TRPBF reliable?
The price and inventory of LT8364EDE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8364EDE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8364EDE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8364EDE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8364EDE#TRPBF?
LT8364EDE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8364EDE#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 LT8364EDE#TRPBF?
For technical support, including LT8364EDE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8364EDE#TRPBF requirements.
6.How does Aetrix verify that LT8364EDE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8364EDE#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 LT8364EDE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8364EDE#TRPBF?
All LT8364EDE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8364EDE#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 LT8364EDE#TRPBF part is unused and in its original packaging.
Return procedure for LT8364EDE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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