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Analog Devices Inc. LT8362EDD#WTRPBF
- Part No.:
- LT8362EDD#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LT8362EDD#WTRPBF.pdf
- Description:
- IC REG BST SEPIC ADJ 2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,916
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Product details
Overview
LT8362EDD#WTRPBF 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 frequency via RT pin. It is used in automotive infotainment power supplies requiring wide VIN range and low standby power.
For engineers reviewing the LT8362EDD#WTRPBF datasheet, LT8362EDD#WTRPBF pinout, LT8362EDD#WTRPBF application, or LT8362EDD#WTRPBF equivalent, key selection considerations 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-grade reliability.
Technical Context
The LT8362EDD#WTRPBF implements fixed-frequency current-mode control with internal slope compensation, using an error amplifier (transconductance 75 µA/V for positive regulation) that compares FBX voltage against 1.60V (boost/SEPIC) or –0.80V (inverting) references. Its oscillator frequency is resistor-programmed (RT pin), with minimum on-time of 70 ns and minimum off-time of 50 ns - enabling high duty-cycle operation at low VIN or high VOUT.
Operation modes are selected via the SYNC/MODE pin: ground (<0.14V) enables Burst Mode (9µA IQ); floating enables pulse-skipping; external clock enables synchronization; 100k-to-GND enables Burst + SSFM; >1.7V enables pulse-skip + SSFM. The BIAS pin (4.4V–VIN range) powers INTVCC to reduce VIN current draw and improve full-load efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports direct battery connection across 12V/24V/48V automotive and industrial rails. |
| Switch Rating | 60V, 2A - enables 48V boost outputs up to 200mA at 8V input without external FETs. |
| Quiescent Current | 9µA in Burst Mode - sustains >10-year battery life in always-on telematics modules. |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - allows compact magnetics and EMI filtering above AM band. |
| Feedback Reference | 1.60V (positive) or –0.80V (negative) - single FBX pin simplifies design for dual-polarity rail generation. |
| Package | 10-lead 3mm × 3mm DFN with exposed PGND pad - θJA = 43°C/W enables 2W dissipation without heatsink. |
| Temperature Range | –40°C to +125°C junction - qualified per AEC-Q100 Grade 1 for under-hood automotive use. |
Pinout & Package
LT8362EDD#WTRPBF uses a thermally enhanced 10-lead 3mm × 3mm plastic DFN package with exposed PGND/GND pad (Pin 11) requiring PCB soldering for thermal and electrical integrity. Pin pitch is 0.5mm; package height is 0.75mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Power Switch Drain | Connects to inductor/diode node; minimize trace area to reduce EMI radiation. |
| 2 SYNC/MODE | Mode Selection & Clock Input | Configures Burst/Pulse-Skip/Sync/SSFM; logic thresholds defined at 0.14V/1.7V. |
| 3 SS | Soft-Start Control | 2µA constant-current ramp; capacitor to GND sets inrush current slew rate. |
| 4 RT | Oscillator Frequency Set | Resistor to GND programs fSW from 300kHz to 2MHz (e.g., 20kΩ = 2MHz). |
| 5 FBX | Feedback Input | Accepts 1.60V (boost/SEPIC) or –0.80V (inverting) reference; regulates output via resistor divider. |
| 6 EN/UVLO | Enable & Undervoltage Lockout | 1.6V turn-off threshold with 80mV hysteresis; resistive divider sets system VIN UVLO point. |
| 7 VIN | Main Input Supply | 2.8V–60V input; bypass locally with low-ESR ceramic capacitor near exposed pad. |
| 8 INTVCC | Internal 3.2V Regulator Output | Must be bypassed with 1µF ceramic; no external loading permitted. |
| 9 BIAS | Secondary Supply for INTVCC | Accepts 4.4V–VIN to source INTVCC current, reducing VIN load and improving efficiency. |
| 10 VC | Error Amplifier Output | Connects to external compensation network (R-C-CE) for loop stability tuning. |
Key Features
| Feature | Design Value |
|---|---|
| Single FBX topology flexibility | Enables boost, SEPIC, or inverting configurations without external op-amps or topology-specific IC variants. |
| Burst Mode with 9µA IQ | Maintains regulation while drawing less than typical coin-cell leakage, critical for battery-backed systems. |
| Spread Spectrum Frequency Modulation | Reduces peak EMI by ±14%–28% around fSW, easing CISPR-25 Class 5 compliance in automotive designs. |
| BIAS pin efficiency boost | Shifts INTVCC supply from VIN to auxiliary rail (e.g., VOUT in SEPIC), cutting VIN current by >50% at full load. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HTOL, TC, and ESD testing - suitable for engine control units. |
Applications
| Automotive Infotainment Power | Industrial Sensor Transmitter |
|---|---|
Use Scenario: Generating isolated ±15V rails from 12V vehicle battery for audio codec and ADC/DAC circuits. IC Role / Device Role / Timing Role: LT8362EDD#WTRPBF operates in inverting configuration (FBX referenced to –0.80V) to produce negative rail, paired with boost for positive rail. Use Value: Single-chip solution eliminates need for dual converters or isolated flyback, reducing BOM count and PCB area by 35%. |
Use Scenario: Powering 4–20mA loop-powered pressure transmitters with 24V input and 3.3V microcontroller supply. IC Role / Device Role / Timing Role: LT8362EDD#WTRPBF configured as SEPIC to maintain regulation during cold-crank dips to 4.5V while delivering 3.3V/200mA. Use Value: Wide 2.8V–60V input range ensures uninterrupted operation during battery transients; 9µA IQ extends loop power budget. |
| Portable Medical Imaging | Telecom Remote Radio Unit |
Use Scenario: Driving high-voltage bias for ultrasound transducer arrays from Li-ion battery (3.0–4.2V). IC Role / Device Role / Timing Role: LT8362EDD#WTRPBF in boost mode generates 60V output with programmable soft-start to limit inrush into large HV capacitors. Use Value: 2A switch handles pulsed loads up to 500mA peak; minimum on-time of 70ns supports high VOUT/VIN ratios without skipping cycles. |
Use Scenario: Providing 12V intermediate rail from 48V telecom plant supply for RF PA bias and FPGA core logic. IC Role / Device Role / Timing Role: LT8362EDD#WTRPBF configured as boost converter with SYNC pin locked to system clock for deterministic EMI placement. Use Value: Synchronization prevents beat frequencies with baseband clocks; SSFM further suppresses narrowband emissions in spectral masks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3780EMSE#PBF | Requires external MOSFETs; supports higher current (10A+); no integrated 2A switch. | Suitable for >1A output designs needing adjustable current limit and phase interleaving. | Select LTC3780EMSE#PBF only when output current exceeds 2A or when synchronous rectification is required. |
| MAX20404ATPA/VY+ | 3.5V–36V input; 2.2A switch; fixed 2.1MHz fSW; no BIAS pin or SSFM. | Targeted at space-constrained consumer applications; lacks AEC-Q100 qualification and wide-VIN capability. | Choose MAX20404ATPA/VY+ for cost-sensitive non-automotive designs where 36V max VIN suffices and EMI requirements are relaxed. |
Compared with LTC3780EMSE#PBF and MAX20404ATPA/VY+, the LT8362EDD#WTRPBF uniquely combines AEC-Q100 qualification, 60V input, integrated 2A switch, BIAS pin efficiency enhancement, and SSFM - making it the only drop-in solution for automotive 48V boost and industrial wide-input SEPIC applications requiring <10µA IQ.
Availability
LT8362EDD#WTRPBF is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor transmitters, portable medical imaging devices, and telecom remote radio units requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LT8362EDD#WTRPBF 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 LT8362EDD#WTRPBF belongs to Analog Devices' Power by Linear™ family of monolithic DC/DC converters designed specifically for demanding automotive and industrial applications requiring wide input range, ultra-low IQ, and robust EMI performance.
FAQ
What is the maximum output voltage achievable with LT8362EDD#WTRPBF in boost configuration?
The LT8362EDD#WTRPBF supports output voltages up to 60V in boost topology, limited by its 60V-rated internal switch and absolute maximum SW pin rating. Practical output is constrained by external diode and capacitor voltage ratings, layout parasitics, and thermal limits - e.g., 48V at 200mA is demonstrated in the datasheet with 8V–38V input. Exceeding 60V risks switch avalanche failure.
Does LT8362EDD#WTRPBF require external compensation components?
Yes, the LT8362EDD#WTRPBF requires external compensation components connected to the VC pin - typically a series RC network plus optional CE capacitor - to stabilize the current-mode control loop across varying input/output conditions and inductor values. The datasheet provides design equations and Type II/III compensation guidelines based on operating point.
Can LT8362EDD#WTRPBF operate in discontinuous conduction mode (DCM)?
Yes, the LT8362EDD#WTRPBF inherently supports DCM operation, especially at light loads or with high VOUT/VIN ratios. Its minimum on-time (70 ns) and minimum off-time (50 ns) define practical DCM boundaries; the IC automatically transitions between CCM and DCM without external intervention, maintaining regulation and Burst Mode efficiency.
How does the BIAS pin improve efficiency in LT8362EDD#WTRPBF?
The BIAS pin in LT8362EDD#WTRPBF supplies the INTVCC regulator (3.2V) when biased between 4.4V and VIN, diverting up to 1.6mA of internal supply current away from VIN. This reduces total input current - particularly beneficial in SEPIC configurations where VOUT may exceed VIN, allowing BIAS to be tied directly to VOUT for >15% efficiency gain at full load.
Is LT8362EDD#WTRPBF pin-compatible with other LT836x variants?
No, LT8362EDD#WTRPBF is not pin-compatible with LT8361 or LT8364 due to differences in pin count (10-pin DFN vs. 12-pin DFN), pin functions (e.g., LT8364 has separate COMP and FB pins), and package thermal pad configuration. Direct replacement requires PCB redesign; however, functional equivalents exist within the LT8362 family (e.g., LT8362EDD#PBF differs only in tape-and-reel packaging).
LT8362EDD#WTRPBF 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, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 60V (Switch)
- Current - Output:
- 2A (Switch)
- Frequency - Switching:
- 300kHz ~ 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LT8362EDD#WTRPBF FAQ
1.How can I place an order for LT8362EDD#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8362EDD#WTRPBF 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 LT8362EDD#WTRPBF reliable?
The price and inventory of LT8362EDD#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8362EDD#WTRPBF is usually 5 days.
3.What payment methods are accepted for LT8362EDD#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8362EDD#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8362EDD#WTRPBF?
LT8362EDD#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8362EDD#WTRPBF 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 LT8362EDD#WTRPBF?
For technical support, including LT8362EDD#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8362EDD#WTRPBF requirements.
6.How does Aetrix verify that LT8362EDD#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LT8362EDD#WTRPBF 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 LT8362EDD#WTRPBF meets industry standards.
7.What is the process for return or replacement of LT8362EDD#WTRPBF?
All LT8362EDD#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8362EDD#WTRPBF, 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 LT8362EDD#WTRPBF part is unused and in its original packaging.
Return procedure for LT8362EDD#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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