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Analog Devices Inc. LT8364EMSE#PBF
- Part No.:
- LT8364EMSE#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Datasheet:
-
LT8364EMSE#PBF.pdf
- Description:
- IC REG BOOST SEPIC 4A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:112
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Product details
Overview
LT8364EMSE#PBF 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), operates down to 9µA quiescent current in Burst Mode, and maintains <15mV output ripple-ideal for automotive infotainment power rails requiring wide VIN and low standby loss.
For engineers reviewing the LT8364EMSE#PBF datasheet, LT8364EMSE#PBF pinout, LT8364EMSE#PBF application, or LT8364EMSE#PBF equivalent, key selection criteria include its single FBX pin enabling both positive/negative output programming, programmable 300kHz–2MHz switching frequency via RT resistor, BIAS pin for efficiency optimization, and AEC-Q100 qualification for automotive use.
Technical Context
The LT8364EMSE#PBF employs fixed-frequency current-mode control with external compensation (VC pin) and dual error amplifiers-one active for positive outputs (1.60V FBX reference), the other for negative outputs (–0.80V reference). Its unique single feedback architecture eliminates topology-specific pins while maintaining precise regulation across all three configurations.
Switching behavior is fully configurable via SYNC/MODE pin: Burst Mode (<0.14V) enables 9µA IQ and low ripple at light loads; pulse-skip (floating) maintains clock alignment; external sync (square wave 300kHz–2MHz) locks frequency; SSFM (≥1.7V or 100k-to-GND) reduces EMI by ±14%–28% frequency deviation. Frequency foldback and programmable soft-start (2µA SS charge current) further enhance startup robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports direct battery connection in 12V/24V/48V automotive and industrial systems without pre-regulation. |
| Switch Rating | 60V, 4A - enables 48V boost from 12V input at ≥1A continuous output with margin for transients. |
| Quiescent Current | 9µA in Burst Mode - sustains >10-year battery life in always-on telematics modules with <15mV output ripple. |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - allows trade-off between inductor size (higher fSW → smaller L) and efficiency (lower fSW → lower switching loss). |
| FBX Reference Voltage | +1.60V or –0.80V - single-pin topology selection enables +VOUT (boost/SEPIC) or –VOUT (inverting) without external logic or configuration resistors. |
| BIAS Pin Function | Accepts 4.4V–VIN supply - offloads INTVCC regulator from VIN, improving full-load efficiency by reducing input current draw at high output power. |
| Package Thermal Resistance | θJA = 45°C/W (MSOP-16) - requires exposed pad soldered to PCB ground plane for thermal management in 3W+ applications. |
Pinout & Package
LT8364EMSE#PBF uses a thermally enhanced 16-lead MSOP package with four pins removed (MSE16 variation), featuring an exposed pad (Pin 17) that must be soldered to PGND/GND for thermal and electrical performance. Pin count is 16 functional terminals including PGND/GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable / Undervoltage Lockout Input | 1.6V rising threshold with 80mV hysteresis - enables programmable VIN turn-on/off via resistor divider; <0.2V reduces VIN current to <1µA for deep shutdown. |
| VIN | Main Input Supply | 2.8V–60V rated - must be locally bypassed with low-ESR capacitor placed adjacent to exposed pad PGND copper near EN/UVLO. |
| INTVCC | Internal 3.2V Regulator Output | Supplies internal circuitry; requires 1µF ceramic bypass to GND; cannot be externally loaded or driven. |
| BIAS | Secondary Input for INTVCC | Accepts 4.4V–VIN supply - when active, shifts INTVCC load from VIN to BIAS, improving system efficiency especially in SEPIC where VOUT ≈ VIN. |
| VC | Error Amplifier Output | Connects to external RC compensation network - sets loop bandwidth and phase margin across wide VIN/VOUT ranges. |
| FBX | Feedback Input | Single pin for +1.60V (positive VOUT) or –0.80V (negative VOUT) regulation - eliminates need for topology-selecting logic or extra pins. |
| RT | Frequency Programming | Resistor to GND sets fSW from 300kHz to 2MHz - enables optimization of magnetics size vs. EMI vs. efficiency. |
| SS | Soft-Start Control | 2µA constant-current charge - controls inrush current ramp rate; internal 220Ω MOSFET discharges during fault/shutdown. |
| SYNC/MODE | Mode Selection & Clock Sync | Five modes: Burst (<0.14V), Pulse-skip (float), Sync (external clock), SSFM (≥1.7V), or Burst+SSFM (100k-to-GND) - configures light-load IQ, EMI, and transient response. |
| SW1/SW2 | Power Switch Outputs | 60V, 4A internal MOSFET drains - minimize trace area to reduce EMI; connect directly to inductor and diode/anode. |
| PGND/GND | Power & Signal Ground | Exposed pad (Pin 17) is primary thermal path - must be soldered to continuous copper ground plane under IC for θJC = 10°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Single FBX Topology Flexibility | One feedback pin supports boost, SEPIC, and inverting configurations - eliminates board redesign when changing output polarity or topology. |
| Burst Mode Ultra-Low IQ | 9µA quiescent current with <15mV output ripple - extends battery runtime in always-on automotive sensors without compromising noise-sensitive analog circuits. |
| Programmable Spread Spectrum | ±14%–28% frequency modulation - reduces peak EMI by spreading energy across spectrum, easing CISPR 25 Class 5 compliance in vehicle ECUs. |
| BIAS-Pin Efficiency Boost | Shifts INTVCC load from VIN to secondary supply - improves full-load efficiency by up to 3% in SEPIC designs where VOUT ≈ VIN and BIAS = VOUT. |
| AEC-Q100 Qualified | Grade E (–40°C to +125°C junction) - validated for automotive powertrain, body electronics, and ADAS modules requiring zero-defect reliability. |
| Robust Protection Suite | Includes overcurrent (7.5A trip), thermal shutdown (>170°C), UVLO, and INTVCC undervoltage - ensures fail-safe operation in harsh environments without external supervision. |
Applications
| Automotive Infotainment Power | Industrial Sensor Transmitter |
|---|---|
Use Scenario: Powering 48V LCD backlight and audio amplifier from 12V vehicle battery with cold-crank tolerance down to 4.5V. IC Role / Device Role / Timing Role: Primary DC/DC controller managing boost conversion, soft-start sequencing, and EMI-controlled switching via SSFM. Use Value: Single-chip solution eliminates need for pre-regulator + post-regulator stages; 9µA IQ preserves battery during parking mode. |
Use Scenario: Generating isolated –15V rail for precision analog front-end in 4–20mA loop-powered pressure transmitter. IC Role / Device Role / Timing Role: Inverting converter providing regulated negative output using single FBX pin and compact DFN layout. Use Value: Eliminates external inverter IC or transformer-based design; –0.80V FBX reference enables accurate negative voltage setpoint without trimming. |
| Medical Portable Ultrasound | Telecom Remote Radio Unit |
Use Scenario: High-efficiency 36V boost supply for ultrasound transducer driver from Li-ion battery (3.0–4.2V/cell). IC Role / Device Role / Timing Role: SEPIC converter handling wide input range and delivering stable output during battery discharge and charging cycles. Use Value: 60V switch rating accommodates 4S battery stack (16.8V max) with headroom for surge; programmable fSW optimizes inductor size for handheld form factor. |
Use Scenario: 24V-to-48V boost converter powering remote PHY in fiber-fed small cell base station with strict EMI limits. IC Role / Device Role / Timing Role: Synchronized boost controller locked to system clock to avoid beat frequencies with digital baseband signals. Use Value: SYNC pin enables deterministic switching alignment; SSFM reduces radiated emissions below FCC Part 15 limits without added shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3780EFE#PBF | 4-switch synchronous buck-boost controller; no integrated switch; requires external MOSFETs; 4V–36V input; 500kHz max fSW. | Used where higher efficiency (>95%) and bidirectional power flow are required; not suitable for space-constrained layouts needing integrated switch. | Select LTC3780EFE#PBF when designing high-power (>10W), thermally limited systems requiring synchronous rectification and wider duty cycle control. |
| MAX20096ATPA/VY+ | 60V, 4A monolithic boost/SEPIC/inverting converter; 2.5V–60V input; 15µA IQ in skip mode; no SSFM; only 125°C temp grade. | Targets cost-sensitive automotive modules where EMI spread spectrum is not mandated; lacks BIAS pin for efficiency optimization. | Select MAX20096ATPA/VY+ for entry-level ADAS cameras or lighting control where AEC-Q100 Grade 1 suffices and SSFM is unnecessary. |
Compared with LTC3780EFE#PBF and MAX20096ATPA/VY+, the LT8364EMSE#PBF uniquely combines integrated 60V/4A switch, single-FBX topology flexibility, SSFM for EMI reduction, and BIAS pin efficiency enhancement-making it optimal for compact, high-reliability automotive and portable medical converters where board space and thermal constraints are critical.
Availability
LT8364EMSE#PBF is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor transmitters, portable medical ultrasound, telecom remote radio units, and battery-powered test equipment requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LT8364EMSE#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, 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™ family of monolithic DC/DC converters designed specifically for high-voltage, wide-input automotive and industrial applications where reliability, low IQ, and topology flexibility are essential.
FAQ
What topology configurations does the LT8364EMSE#PBF support?
The LT8364EMSE#PBF supports boost, SEPIC, and inverting converter topologies using a single FBX feedback pin. For positive outputs (e.g., 48V boost), FBX regulates to +1.60V; for negative outputs (e.g., –15V), it regulates to –0.80V. No external logic or pin strapping is needed-the topology is determined solely by the external resistor divider connection and circuit layout. This eliminates redesign effort when switching between output polarities in the same product family.
How does the BIAS pin improve efficiency in the LT8364EMSE#PBF?
The BIAS pin on the LT8364EMSE#PBF accepts a secondary 4.4V–VIN supply to power the internal 3.2V INTVCC regulator, thereby reducing current draw from the main VIN rail. In SEPIC applications where VOUT ≈ VIN, connecting BIAS to VOUT can improve full-load efficiency by up to 3%. The LT8364EMSE#PBF automatically selects between VIN and BIAS based on voltage thresholds-no external control logic is required.
Can the LT8364EMSE#PBF be synchronized to an external clock, and what are the requirements?
Yes, the LT8364EMSE#PBF can be synchronized to an external clock via the SYNC/MODE pin. The input must be a square wave with 20%–80% duty cycle, valley <0.4V and peak >1.7V (up to 6V), and frequency between 300kHz and 2MHz. When synchronized, the LT8364EMSE#PBF operates in pulse-skip mode-not Burst Mode-to maintain regulation alignment. The RT resistor should be set to match or fall below the lowest expected sync frequency.
What is the purpose of the exposed pad on the LT8364EMSE#PBF MSOP package?
The exposed pad (Pin 17) on the LT8364EMSE#PBF MSOP package serves as both PGND and GND and is the primary thermal conduction path from the die to the PCB. It must be soldered to a continuous copper ground plane to achieve θJC = 10°C/W and prevent thermal shutdown under load. Failure to solder the pad results in >40°C higher junction temperature and potential reliability degradation in sustained 2W+ operation.
Is the LT8364EMSE#PBF qualified for automotive applications?
Yes, the LT8364EMSE#PBF is AEC-Q100 qualified for automotive applications (Grade E, –40°C to +125°C junction temperature) and is manufactured under controlled automotive processes. It includes built-in protections-overcurrent (7.5A), thermal shutdown (>170°C), UVLO, and INTVCC undervoltage-that meet ISO 16750-2 and ISO 7637-2 stress test requirements for engine control, infotainment, and ADAS modules.
LT8364EMSE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, 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:
- 16-MSOP-EP
LT8364EMSE#PBF FAQ
1.How can I place an order for LT8364EMSE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8364EMSE#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 LT8364EMSE#PBF reliable?
The price and inventory of LT8364EMSE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8364EMSE#PBF is usually 5 days.
3.What payment methods are accepted for LT8364EMSE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8364EMSE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8364EMSE#PBF?
LT8364EMSE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8364EMSE#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 LT8364EMSE#PBF?
For technical support, including LT8364EMSE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8364EMSE#PBF requirements.
6.How does Aetrix verify that LT8364EMSE#PBF is sourced from the original manufacturer or authorized distributors?
All LT8364EMSE#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 LT8364EMSE#PBF meets industry standards.
7.What is the process for return or replacement of LT8364EMSE#PBF?
All LT8364EMSE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8364EMSE#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 LT8364EMSE#PBF part is unused and in its original packaging.
Return procedure for LT8364EMSE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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