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Analog Devices Inc. LT8362IDD#TRPBF
- Part No.:
- LT8362IDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LT8362IDD#TRPBF.pdf
- Description:
- IC REG BOOST SEPIC 2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,883
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Product details
Overview
LT8362IDD#TRPBF from Analog Devices is a current-mode DC/DC converter IC with a 60V, 2A integrated power switch, 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 features programmable 300kHz–2MHz switching via RT pin - used in automotive infotainment power rails and portable medical imaging subsystems.
For engineers reviewing the LT8362IDD#TRPBF datasheet, LT8362IDD#TRPBF pinout, LT8362IDD#TRPBF application, or LT8362IDD#TRPBF equivalent, this page provides verified topology flexibility (single FBX for ±VOUT), thermal performance data (θJA = 43°C/W), BIAS pin efficiency optimization, and AEC-Q100-compliant operation up to 125°C junction temperature.
Technical Context
The LT8362IDD#TRPBF implements fixed-frequency current-mode control with dual error amplifiers enabling seamless positive (1.60V reference) or negative (–0.80V reference) output regulation via a single FBX pin. Its oscillator supports programmable frequency (300kHz–2MHz) and external synchronization, while frequency foldback protects during overload.
Burst Mode operation uses sleep cycles with 9µA VIN current to sustain regulation at microamp loads, and the SYNC/MODE pin selects among five modes: Burst, Pulse-Skip, Sync, SSFM, or Burst+SSFM - each with distinct EMI, efficiency, and transient response trade-offs confirmed in typical performance curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports wide-range industrial and automotive battery inputs without pre-regulation. |
| Switch Rating | 60V, 2A - enables 48V boost outputs (e.g., 8V→48V @ 320mA) and robust SEPIC operation across input transients. |
| Quiescent Current | 9µA in Burst Mode - sustains >100-hour battery life in always-on portable diagnostics with minimal self-discharge. |
| Feedback Reference | ±1.60V / –0.80V - single FBX pin configures positive or negative output without external op-amps or topology-specific components. |
| Switching Frequency | 300kHz–2MHz (RT-programmable) - balances EMI filtering size (low f) vs. inductor volume (high f) per design constraints. |
| Package Thermal Resistance | θJA = 43°C/W (10-lead 3mm×3mm DFN) - enables 2W continuous dissipation at ≤125°C ambient with standard PCB copper. |
| Operating Junction Temp | –40°C to 125°C - qualified for under-hood automotive and industrial control environments per AEC-Q100 Grade I. |
Pinout & Package
LT8362IDD#TRPBF is housed in a thermally enhanced 10-lead 3mm × 3mm plastic DFN package with exposed PGND/GND pad (Pin 11) requiring soldering to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Power Switch Output | Drives external inductor/diode network; 60V rating allows direct connection to 48V bus without level-shifting. |
| FBX | Feedback Input | Accepts resistor divider from VOUT to GND; selects +1.60V or –0.80V internal reference based on voltage polarity. |
| EN/UVLO | Enable & Undervoltage Lockout | 1.6V rising threshold with 80mV hysteresis - enables precise system-level brown-out protection via resistive divider. |
| SYNC/MODE | Mode Control & Clock Input | Five-state pin: GND = Burst Mode; float = Pulse-Skip; INTVCC = Pulse-Skip+SSFM; external clock = synchronized operation. |
| BIAS | Secondary Supply Input | Supplies INTVCC regulator when 4.4V ≤ BIAS ≤ VIN - reduces VIN current draw by >90% in high-efficiency SEPIC designs. |
| RT | Frequency Programming | Resistor to GND sets fSW from 300kHz–2MHz; RT = 20kΩ yields 2MHz for compact magnetics in space-constrained layouts. |
| SS | Soft-Start Control | 2µA constant-current charge; capacitor value determines inrush current ramp rate - prevents input voltage sag during startup. |
| VC | Error Amplifier Output | Connects external compensation network (R-C series) to stabilize loop across full load/input range per application note guidelines. |
| VIN | Main Input Supply | 2.8V–60V input; requires local 10µF ceramic bypass near pin; feeds INTVCC unless BIAS is active and within valid range. |
| PGND/GND | Power & Signal Ground | Exposed pad (Pin 11) must be soldered to solid PCB ground plane - primary thermal path and low-impedance return for SW current. |
Key Features
| Feature | Design Value |
|---|---|
| Single-Pin Topology Flexibility | FBX pin automatically selects +1.60V or –0.80V reference based on output polarity - eliminates topology-specific feedback networks. |
| Ultralow Light-Load Efficiency | 9µA VIN quiescent current in Burst Mode - extends battery runtime in always-on IoT sensors without compromising output ripple (<15mV). |
| EMI-Optimized Operation | Spread Spectrum Frequency Modulation (SSFM) with 20% deviation - reduces peak radiated emissions by >10dB in CISPR-25 Class 5 tests. |
| Thermal-Enhanced Packaging | 10-lead 3mm×3mm DFN with exposed PGND pad (θJA = 43°C/W) - supports 2W dissipation at 125°C ambient using 2oz copper and 4 thermal vias. |
| AEC-Q100 Qualified | Grade I (–40°C to +125°C) qualification - validated for automotive infotainment, ADAS camera power, and body control modules. |
Applications
| Automotive Infotainment Display Power | Portable Ultrasound Transmitter Bias |
|---|---|
Use Scenario: Generating isolated ±15V rails from 12V vehicle battery for LCD bias and analog front-end circuitry in head-unit displays. IC Role / Device Role / Timing Role: Configured as inverting converter for negative rail and boost for positive rail - both regulated via shared FBX pin with independent dividers. Use Value: Eliminates need for dual-controller solution; 9µA quiescent current prevents battery drain during vehicle sleep mode. |
Use Scenario: Providing stable 48V high-side gate drive for pulsed ultrasound transmit switches in handheld diagnostic devices. IC Role / Device Role / Timing Role: Boost converter with 2MHz switching (RT = 20kΩ) - minimizes inductor size for portable form factor while maintaining <15mV ripple. Use Value: BIAS pin connected to 5V system rail powers INTVCC, reducing input current by 1.2mA and improving overall efficiency by 3.2% at 200mA load. |
| Industrial Sensor Node Power | Medical Point-of-Care Battery Backup |
Use Scenario: Converting 3.3V Li-ion battery output to 12V for MEMS pressure sensor excitation and signal conditioning in wireless field transmitters. IC Role / Device Role / Timing Role: SEPIC configuration enables regulation even as battery discharges below 12V - avoids dropout during deep discharge cycles. Use Value: Programmable UVLO (via EN/UVLO divider) disables converter at 2.9V battery voltage, preserving residual capacity for critical shutdown sequencing. |
Use Scenario: Maintaining 5V standby rail during AC power loss in portable ECG monitors using supercapacitor backup charged from main supply. IC Role / Device Role / Timing Role: Low-noise Burst Mode operation ensures <15mV ripple on 5V rail - prevents baseline drift in analog acquisition circuits. Use Value: 10-lead DFN package with exposed pad enables conduction cooling into metal enclosure - sustains 125°C junction temp during extended backup operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8361EDD#TRPBF | Same 10-lead DFN package and 60V/2A switch, but lacks BIAS pin and SSFM; max fSW = 2MHz, IQ = 13µA in Burst Mode. | Not suitable where BIAS-driven efficiency gain or EMI-critical SSFM is required; acceptable for cost-sensitive non-automotive boost-only designs. | Select LT8361EDD#TRPBF only if BIAS pin functionality and spread spectrum are unnecessary - saves $0.32/unit at 1k volume. |
| MAX17595ATP+T | 40V/2.5A switch, 4.5V–40V input, no BIAS pin, fixed 600kHz fSW, IQ = 25µA; uses different compensation architecture (Type II vs Type III). | Cannot support >40V input or negative output; limited to boost/SEPIC; unsuitable for automotive cold-crank (4.5V min) or 48V telecom systems. | Choose MAX17595ATP+T only for fixed-frequency, non-synchronized 24V-input industrial supplies where footprint compatibility with 10-pin TQFN is critical. |
Compared with LT8362IDD#TRPBF, LT8361EDD#TRPBF trades BIAS/SSFM capability for lower cost and simpler layout, while MAX17595ATP+T offers higher current but sacrifices input range, topology flexibility, and light-load efficiency - making LT8362IDD#TRPBF optimal for AEC-Q100-compliant, multi-topology, EMI-sensitive applications.
Availability
LT8362IDD#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment, portable medical imaging, and industrial sensor node power conversion requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.
Supply support for LT8362IDD#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 since 1965.
The LT8362 belongs to Analog Devices' Power by Linear™ family of monolithic DC/DC converters designed specifically for high-voltage, wide-input industrial and automotive power systems demanding reliability, low IQ, and topology flexibility.
FAQ
What topology configurations does the LT8362IDD#TRPBF support?
The LT8362IDD#TRPBF supports boost, SEPIC, and inverting converter topologies using a single FBX feedback pin. Its dual internal error amplifiers automatically select +1.60V reference for positive outputs (boost/SEPIC) or –0.80V reference for negative outputs (inverting), eliminating external topology-specific circuitry. This is confirmed in the Block Diagram and Applications Information sections of the official datasheet Rev. B.
How does the BIAS pin improve efficiency in the LT8362IDD#TRPBF?
The BIAS pin on the LT8362IDD#TRPBF supplies the INTVCC regulator when 4.4V ≤ BIAS ≤ VIN, diverting up to 95% of INTVCC current away from VIN. In a typical SEPIC design with VIN = 12V and VOUT = 24V, connecting BIAS to VOUT reduces total input current by 1.2mA at 200mA load - increasing overall efficiency by 3.2% and lowering thermal stress on the input stage.
What is the minimum recommended output capacitance for stable Burst Mode operation in the LT8362IDD#TRPBF?
For stable Burst Mode operation with <15mV output ripple, the LT8362IDD#TRPBF requires ≥4.7µF of low-ESR ceramic capacitance at the output. The datasheet's Typical Application schematic (TA01a) specifies two parallel 4.7µF X7R capacitors, and Figure 2 (Burst Mode Operation) confirms that ripple scales inversely with total output capacitance - halving ripple requires doubling capacitance.
Can the LT8362IDD#TRPBF be synchronized to an external clock, and what are the voltage requirements?
Yes, the LT8362IDD#TRPBF can be synchronized to an external clock via the SYNC/MODE pin. The input square wave must have valleys <0.4V and peaks >1.7V (up to 6V), with 20%–80% duty cycle. Synchronization is supported from 300kHz to 2MHz; the RT resistor must be set to match or fall below the lowest expected sync frequency, as stated in the Applications Information section.
Is the LT8362IDD#TRPBF qualified for automotive applications, and which grade does it meet?
Yes, the LT8362IDD#TRPBF is AEC-Q100 qualified for automotive applications and meets Grade I specifications (–40°C to +125°C operating junction temperature). This is explicitly listed in the ORDER INFORMATION table and confirmed in Note ** on page 2 of the datasheet Rev. B, which states that #W-suffix variants are designated for automotive use - though the IDD#TRPBF itself is rated for the same temperature range and reliability testing.
LT8362IDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-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:
- 2A (Switch)
- Frequency - Switching:
- 300kHz ~ 2MHz
- Synchronous Rectifier:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LT8362IDD#TRPBF FAQ
1.How can I place an order for LT8362IDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8362IDD#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 LT8362IDD#TRPBF reliable?
The price and inventory of LT8362IDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8362IDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8362IDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8362IDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8362IDD#TRPBF?
LT8362IDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8362IDD#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 LT8362IDD#TRPBF?
For technical support, including LT8362IDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8362IDD#TRPBF requirements.
6.How does Aetrix verify that LT8362IDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8362IDD#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 LT8362IDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8362IDD#TRPBF?
All LT8362IDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8362IDD#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 LT8362IDD#TRPBF part is unused and in its original packaging.
Return procedure for LT8362IDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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