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Analog Devices Inc. LT8364HDE#TRPBF
- Part No.:
- LT8364HDE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LT8364HDE#TRPBF.pdf
- Description:
- IC REG BOOST SEPIC 4A 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,966
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Product details
Overview
LT8364HDE#TRPBF from Analog Devices is a high-voltage, 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 +150°C junction temperature for automotive-grade reliability.
For engineers reviewing the LT8364HDE#TRPBF datasheet, LT8364HDE#TRPBF pinout, LT8364HDE#TRPBF application, or LT8364HDE#TRPBF equivalent, key selection considerations include its single FBX-pin topology flexibility, programmable 300kHz–2MHz switching frequency, SYNC/MODE pin configurable EMI reduction (SSFM), BIAS pin efficiency optimization, and AEC-Q100-qualified thermal performance in the 12-lead 4mm × 3mm DFN package.
Technical Context
The LT8364HDE#TRPBF implements fixed-frequency current-mode control with dual error amplifiers-one active for positive outputs (FBX = +1.6V reference) and the other for negative outputs (FBX = –0.8V reference)-enabling topology reconfiguration without hardware change. Its oscillator frequency is resistor-programmed via RT pin and supports external synchronization or Spread Spectrum Frequency Modulation (SSFM) through the SYNC/MODE pin.
Protection architecture includes overcurrent detection (7.5A trip), thermal shutdown (>170°C), INTVCC UVLO (~2.5V), and EN/UVLO with 80mV hysteresis. The BIAS pin dynamically sources INTVCC when 4.4V ≤ BIAS ≤ VIN, reducing VIN supply current and improving full-load efficiency-critical in SEPIC or high-input-voltage boost designs.
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 - enables 48V boost conversion at ≥1A output with margin for transients and layout parasitics. |
| Quiescent Current | 9µA in Burst Mode - sustains ultra-low-power operation in battery-backed or always-on systems without compromising regulation. |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - allows trade-off between inductor size, EMI, and efficiency; 2MHz enables compact 3.3µH designs. |
| Operating Temperature | –40°C to +150°C (junction) - qualified per AEC-Q100 Grade H, suitable for under-hood automotive and high-ambient industrial environments. |
| Feedback Reference | +1.60V (boost/SEPIC) or –0.80V (inverting) - single FBX pin eliminates topology-specific components and simplifies PCB layout reuse. |
| Package | 12-lead 4mm × 3mm DFN with exposed PGND pad - θJA = 43°C/W; requires soldered thermal pad for 150°C operation and 4A switch thermal management. |
Pinout & Package
LT8364HDE#TRPBF is housed in a thermally enhanced 12-lead plastic DFN (4mm × 3mm) with exposed PGND/GND pad (Pin 13) that must be soldered to PCB ground plane for thermal and electrical integrity. Pin count and layout match the LT8364EDE/IDE variants; no pins are internally connected except as specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | SW1, SW2, EN/UVLO, VIN, INTVCC, NC | SW1/SW2: High-current switch outputs; EN/UVLO: enable/UVLO threshold control (1.6V rising); VIN: main input supply; INTVCC: regulated 3.2V internal rail; NC: no connection. |
| 7, 8, 9, 10, 11, 12 | BIAS, VC, FBX, RT, SS, SYNC/MODE | BIAS: auxiliary supply for INTVCC; VC: error amplifier output for compensation network; FBX: dual-reference feedback input; RT: frequency programming node; SS: soft-start timing capacitor; SYNC/MODE: multi-function pin for burst/pulse-skip/sync/SSFM selection. |
| 13 | PGND/GND | Exposed thermal pad - electrically and thermally connected to power and signal ground; mandatory soldering required for thermal performance and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Topology Flexibility | Single FBX pin supports boost, SEPIC, and inverting configurations - eliminates need for separate ICs or complex rework when changing output polarity or topology. |
| Burst Mode Efficiency | 9µA IQ with <15mV output ripple - extends battery life in portable medical or telemetry devices while maintaining tight regulation during sleep cycles. |
| EMI Reduction | Programmable SSFM (±14–28% deviation) and external sync capability - meets CISPR 25 Class 5 requirements without added shielding or filtering in automotive modules. |
| Efficiency Optimization | BIAS pin supplies INTVCC from secondary rail (e.g., VOUT in SEPIC) - reduces VIN current draw by >95% at full load, lowering system power loss and thermal stress. |
| Robust Protection | Integrated 7.5A overcurrent trip, thermal shutdown (>170°C), and fault-triggered SS pin discharge - prevents latch-up and enables safe auto-recovery after transient faults. |
Applications
| Automotive LED Headlamp Driver | Industrial 48V Telecom Power Supply |
|---|---|
|
Use Scenario: Driving high-brightness LEDs from 12V vehicle battery with precise current regulation and cold-crank tolerance down to 4.5V. IC Role / Device Role / Timing Role: Boost controller with programmable soft-start and UVLO hysteresis ensures stable startup during engine cranking; 60V switch withstands load-dump transients. Use Value: Single-chip solution replaces discrete MOSFET+controller combos; 9µA IQ preserves battery during parking mode; AEC-Q100 H-grade guarantees operation at 150°C under hood. |
Use Scenario: Generating isolated 48V intermediate bus from 24V or 36V industrial DC source for PoE++ or RF power amplifiers. IC Role / Device Role / Timing Role: High-efficiency boost converter operating at 1.5MHz to minimize magnetics size; SSFM reduces conducted EMI in dense rack-mounted systems. Use Value: 4A switch delivers >30W output without external FETs; BIAS pin powered from VOUT improves full-load efficiency by 3–5%; DFN package enables compact 1" × 1" layout. |
| Portable Ultrasound Transmitter | Medical Diagnostic HV Bias Supply |
|
Use Scenario: Providing 40–60V bias for piezoelectric transducers in handheld ultrasound units with strict battery-life targets. IC Role / Device Role / Timing Role: Inverting configuration generates negative HV rail; Burst Mode maintains µA-level standby current between imaging bursts. Use Value: Dual-reference FBX pin enables seamless polarity reversal; 12-lead DFN fits space-constrained handheld enclosures; 150°C rating supports sealed, fanless thermal design. |
Use Scenario: Generating stable ±24V or ±48V rails for analog front-end circuits in MRI or CT detector modules requiring low noise and long-term stability. IC Role / Device Role / Timing Role: SEPIC topology provides input-output isolation and handles wide VIN variation (e.g., 10–40V battery packs); programmable frequency avoids sensitive spectral bands. Use Value: 0.015%/V FBX line regulation ensures <0.5% output drift across input range; RT pin tuning enables EMI compliance without layout changes; AEC-Q100 qualification validates reliability for 10+ year deployments. |
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 controller (no integrated FETs); supports 4–36V input, up to 30V output; requires external MOSFETs and gate drivers. | Used where higher efficiency (>95%) and bidirectional voltage regulation (VIN > VOUT or VIN < VOUT) are required; not suitable for space-constrained layouts due to external FET count. | Select LTC3789 when output voltage must track input (e.g., battery-powered systems with varying SoC) and board area permits discrete FETs; avoid for cost-sensitive or compact designs needing integrated switch. |
| LT8330EDD#TRPBF | 60V, 1.5A monolithic boost/SEPIC/inverting converter; same FBX architecture but lower current rating; 3mm × 3mm DFN package; max 1.2MHz switching frequency. | Targeted at sub-5W applications (e.g., sensor nodes, wearables); lacks SSFM and has higher IQ (12µA) than LT8364HDE#TRPBF in Burst Mode. | Choose LT8330 for lower-power, smaller-footprint designs where 1.5A peak current suffices; use LT8364HDE#TRPBF when >1A continuous output, SSFM, or 150°C operation is mandatory. |
Compared with LTC3789EMSE#TRPBF and LT8330EDD#TRPBF, the LT8364HDE#TRPBF uniquely combines 4A integrated switching, AEC-Q100 H-grade reliability, SSFM-enabled EMI control, and single-FBX topology flexibility in a compact DFN-making it optimal for high-power, thermally demanding, and automotive-compliant boost/SEPIC/inverting designs where integration and ruggedness are prioritized over ultra-high efficiency or bidirectional operation.
Availability
LT8364HDE#TRPBF is available at Aetrix Electronics and suitable for automotive LED lighting, industrial 48V telecom power, portable medical imaging, and high-reliability diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8364HDE#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, Inc. 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 belongs to Analog Devices' Power by Linear™ monolithic DC/DC converter family, engineered for high-voltage, high-current, multi-topology operation in harsh environments-specifically targeting automotive, industrial, and medical applications demanding AEC-Q100 qualification and extended temperature resilience.
FAQ
What is the maximum output current capability of the LT8364HDE#TRPBF in boost configuration?
The LT8364HDE#TRPBF integrates a 60V, 4A power switch with typical RDS(ON) of 100mΩ. In boost configuration at 24V input and 48V output, it delivers up to 1A continuous output current with proper thermal management. Peak switch current is limited to 6.4A (max), and minimum on-time (85ns) supports high duty-cycle operation up to ~90% at 2MHz, enabling robust 30W+ designs. Derating applies above 125°C ambient.
How does the LT8364HDE#TRPBF achieve ultralow quiescent current, and what is its impact on light-load efficiency?
The LT8364HDE#TRPBF achieves 9µA quiescent current in Burst Mode by entering deep sleep between short current pulses, powering the output solely from the output capacitor. This reduces input current by >99% versus pulse-skipping mode, directly extending battery runtime in portable diagnostics or telematics. Output ripple remains <15mV due to controlled pulse energy and optimized feedback divider leakage-critical for noise-sensitive analog circuits.
Can the LT8364HDE#TRPBF be used in an inverting configuration, and how is the output voltage set?
Yes, the LT8364HDE#TRPBF supports inverting operation using the same FBX pin, which references –0.80V internally. To set a –24V output, use R1 = R2 × (|–24V| / 0.80V – 1) ≈ R2 × 29; typical R2 values range from 25kΩ to 1MΩ to minimize divider current and preserve light-load efficiency. Amplifier A2 activates automatically, providing non-inverting gain from FBX to VC, ensuring stable regulation without external topology changes.
What thermal design requirements apply to the LT8364HDE#TRPBF for operation at 150°C junction temperature?
The LT8364HDE#TRPBF requires soldering of its exposed PGND pad (Pin 13) to a minimum 200mm² copper pour with ≥4 thermal vias (0.3mm diameter) to an internal ground plane. With θJA = 43°C/W, sustaining 150°C junction at 100°C ambient demands ≤1.16W total power dissipation. At 4A switch current and 100mΩ RDS(ON), conduction loss alone reaches ~0.4W-leaving margin for switching losses only with optimized layout, low-ESR capacitors, and careful inductor selection.
Does the LT8364HDE#TRPBF support synchronization to an external clock, and what are the voltage thresholds for the SYNC/MODE pin?
Yes, the LT8364HDE#TRPBF supports external clock synchronization via the SYNC/MODE pin. For sync mode, drive the pin with a square wave (20–80% duty cycle) having valleys <0.4V and peaks >1.7V (up to 6V). Thresholds are precisely defined: sync detection occurs at 0.4V (rising) and 1.3V (falling); mode selection uses 0.14V (Burst) and 1.7V (pulse-skip/SSFM). No external pull-up/down is needed-the pin is internally biased.
LT8364HDE#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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (4x3)
LT8364HDE#TRPBF FAQ
1.How can I place an order for LT8364HDE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8364HDE#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 LT8364HDE#TRPBF reliable?
The price and inventory of LT8364HDE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8364HDE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8364HDE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8364HDE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8364HDE#TRPBF?
LT8364HDE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8364HDE#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 LT8364HDE#TRPBF?
For technical support, including LT8364HDE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8364HDE#TRPBF requirements.
6.How does Aetrix verify that LT8364HDE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8364HDE#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 LT8364HDE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8364HDE#TRPBF?
All LT8364HDE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8364HDE#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 LT8364HDE#TRPBF part is unused and in its original packaging.
Return procedure for LT8364HDE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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