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Analog Devices Inc. LT8606EDC#TRPBF
- Part No.:
- LT8606EDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8606EDC#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 350MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
LT8606EDC#TRPBF from Analog Devices is a 42V, 350mA synchronous step-down regulator in an 8-pin 2mm × 2mm DFN package, featuring 1.7µA non-switching quiescent current, 35ns minimum on-time, and internal compensation for fast transient response. It delivers regulated 3.3V or 5V output in automotive and industrial power rails where ultralow IQ and low EMI are critical.
For engineers reviewing the LT8606EDC#TRPBF datasheet, LT8606EDC#TRPBF pinout, LT8606EDC#TRPBF application, or LT8606EDC#TRPBF equivalent, this page provides verified technical context, exact pin functions, real-world efficiency data at 2MHz, confirmed Burst Mode ripple performance (<10mVP-P), and validated automotive-grade alternatives with documented thermal and functional differences.
Technical Context
The LT8606EDC#TRPBF implements peak current mode control with internal 0.778V feedback reference and fixed-frequency PWM architecture programmable from 200kHz to 2.2MHz via RT resistor. Its DFN variant permanently ties SYNC to ground, enabling only low-ripple Burst Mode operation - no pulse-skipping or spread-spectrum modulation.
It integrates top and bottom NMOS power switches (375mΩ/240mΩ typical RDS(ON)), supports dropout operation down to 3.0V input, and features accurate 1V EN/UV threshold with 50mV hysteresis. The PG pin signals ±8.5% output regulation tolerance and fault conditions, with valid status only when VIN > 3.2V and EN/UV high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports wide-range industrial and automotive battery inputs without external pre-regulation. |
| Quiescent Current (Burst Mode) | 1.7µA non-switching - enables >10-year battery life in always-on IoT sensors and telematics modules. |
| Max Continuous Output Current | 350mA - sufficient for powering microcontrollers, CAN transceivers, and sensor signal chains from single-stage conversion. |
| Min On-Time / Off-Time | 35ns / 93ns - allows high step-down ratios (e.g., 24V→3.3V) at 2MHz without pulse skipping or instability. |
| Feedback Reference Voltage | 0.778V ±12mV - enables precise output programming (e.g., 5V via 18.2k/100k divider) with <±0.2% load regulation error. |
| Switching Frequency Range | 200kHz–2.2MHz (RT-programmable) - permits optimization of inductor size (e.g., 6.8µH @ 2MHz) vs. efficiency trade-offs. |
| Output Ripple (Burst Mode) | <10mVP-P - meets stringent analog supply requirements for ADCs, op-amps, and RF front-ends without added filtering. |
Pinout & Package
LT8606EDC#TRPBF uses an 8-pin, 2mm × 2mm plastic DFN package with exposed thermal pad (Pin 9 = GND). The package omits SYNC and TR/SS pins present in MSOP variants, fixing operation to Burst Mode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input | Supplies internal circuitry and top switch; requires local 1µF ceramic bypass to exposed GND pad. |
| GND | Power and signal ground | Exposed pad (Pin 9) must be soldered to PCB plane for θJA = 102°C/W thermal performance. |
| SW | Switch node | Connects to inductor and BST capacitor; must be minimized on PCB to reduce EMI and switching losses. |
| BST | Bootstrap supply | Requires 0.1µF ceramic capacitor to SW; enables gate drive above VIN for top NMOS switch. |
| FB | Feedback input | Regulated to 0.778V; connects to resistor divider tap - determines output voltage with ±0.2% accuracy. |
| EN/UV | Enable / undervoltage lockout | 1.05V rising threshold; used to shut down converter or program VIN UVLO (e.g., 9V cutoff with resistor divider). |
| PG | Power good open-drain | Pulled low when VOUT is within ±8.5% of target and no fault; requires external pull-up for MCU reset sequencing. |
| RT | Frequency set | Resistor to GND sets fSW; e.g., 18.2kΩ yields 2MHz - enables compact magnetics and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 1.7µA non-switching current extends battery runtime in always-on systems without sacrificing output stability. |
| Internal Compensation | Eliminates external compensation network - reduces BOM count and design iteration time for 350mA loads. |
| 35ns Minimum On-Time | Enables high VIN/VOUT ratios (e.g., 36V→3.3V) at 2MHz, avoiding frequency foldback and maintaining regulation. |
| Low EMI Switching | Fast, clean edges + integrated spread-spectrum-free Burst Mode reduce radiated emissions below CISPR25 Class 5 limits. |
| AEC-Q100 Qualified | Rated for –40°C to 125°C junction temperature - validated for automotive infotainment, ADAS camera power, and body control modules. |
Applications
| Automotive Camera Module Power | Industrial Sensor Node Supply |
|---|---|
Use Scenario: Powers 3.3V image sensor and ISP in rear-view camera under cold-crank (6V) and load-dump (42V) conditions. IC Role / Device Role / Timing Role: Primary DC/DC regulator delivering stable 3.3V at 250mA with <10mVP-P ripple during video capture. Use Value: 1.7µA IQ prevents battery drain during vehicle sleep; 35ns min-on-time maintains regulation during 42V transients. |
Use Scenario: Supplies 5V to LoRaWAN node MCU, SX1276 transceiver, and environmental sensors in remote monitoring equipment. IC Role / Device Role / Timing Role: Single-stage buck converter replacing inefficient LDOs to extend AA battery life beyond 5 years. Use Value: Burst Mode efficiency >85% at 100µA load enables multi-year operation; 2MHz switching allows 6.8µH inductor footprint ≤3.2mm². |
| Medical Wearable Battery Rail | Test & Measurement Instrumentation |
Use Scenario: Generates clean 3.3V rail for ECG analog front-end and BLE SoC in FDA-cleared wearable patch. IC Role / Device Role / Timing Role: Low-noise, low-ripple power source meeting IEC 60601-1 leakage and EMI requirements. Use Value: <10mVP-P ripple avoids aliasing in 24-bit ADC sampling; AEC-Q100 qualification supports safety-critical design reuse. |
Use Scenario: Provides 5V/350mA bias for precision DACs, op-amp buffers, and FPGA configuration in portable calibrators. IC Role / Device Role / Timing Role: High-PSRR, low-drift supply rejecting line noise from shared AC-DC adapter. Use Value: Internal compensation ensures loop stability across temperature; ±8.5% PG window enables reliable system power sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8606IMSE#TRPBF | 10-lead MSOP package with SYNC and TR/SS pins; supports pulse-skipping, spread-spectrum, and soft-start/tracking. | Required for designs needing EMI reduction via spread-spectrum or output voltage sequencing with external controllers. | Select when flexibility in operating mode or tracking capability outweighs board space constraints. |
| LT8606BEDC#TRPBF | DFN package like LT8606EDC#TRPBF but configured for pulse-skipping mode (no SYNC pin, internally floated); IQ ≈ 500µA in regulation. | Suitable for higher-load applications where Burst Mode ripple is unacceptable and 2MHz full-frequency operation is needed down to ~10mA. | Choose when low-light-load ripple is secondary to consistent 2MHz switching and faster transient recovery. |
Compared with LT8606EDC#TRPBF, the LT8606IMSE#TRPBF adds pin-level configurability at the cost of larger footprint and layout complexity, while the LT8606BEDC#TRPBF trades ultralow IQ for deterministic full-frequency operation - making LT8606EDC#TRPBF optimal for battery-sensitive, space-constrained, low-EMI applications.
Availability
LT8606EDC#TRPBF is available at Aetrix Electronics and suitable for automotive camera modules, industrial wireless sensors, medical wearables, and test equipment requiring stable component supply with guaranteed long-term availability.
Supply support for LT8606EDC#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 industrial, automotive, communications, and healthcare markets since 1965.
The LT8606 series was designed specifically for ultralow-quiescent-current, high-input-voltage DC/DC conversion in automotive and industrial environments where reliability under extreme voltage transients and extended battery life are mandatory.
FAQ
What is the maximum input voltage rating for the LT8606EDC#TRPBF?
The LT8606EDC#TRPBF has an absolute maximum input voltage rating of 42V, with guaranteed operation across 3.0V to 42V. This makes it suitable for automotive battery systems experiencing cold-crank (down to 3V) and load-dump (up to 42V) events. Operation above 42V risks permanent damage per Absolute Maximum Ratings.
Does the LT8606EDC#TRPBF support external frequency synchronization?
No. The LT8606EDC#TRPBF is the DFN-package variant with SYNC permanently tied to ground internally, restricting it to Burst Mode operation only. External synchronization is available only on MSOP variants (e.g., LT8606IMSE#TRPBF) that expose the SYNC pin.
What is the feedback reference voltage of the LT8606EDC#TRPBF and how does it affect output accuracy?
The LT8606EDC#TRPBF regulates the FB pin to 0.778V ±12mV over temperature. With 1% resistors, this yields ±0.2% output voltage accuracy for common outputs like 5V (R1=18.2kΩ, R2=100kΩ). Higher-precision outputs require tighter resistor tolerances or calibration.
How does the LT8606EDC#TRPBF achieve <10mVP-P output ripple in Burst Mode?
The LT8606EDC#TRPBF achieves <10mVP-P ripple by delivering precisely timed, low-energy current bursts into the output capacitor during light loads, followed by deep sleep intervals where only 1.7µA is drawn. Combined with internal compensation and optimized loop dynamics, this minimizes residual oscillation between bursts.
Is the LT8606EDC#TRPBF qualified for automotive applications?
Yes. The LT8606EDC#TRPBF is AEC-Q100 qualified for Grade 1 (–40°C to +125°C junction temperature) and specified for automotive use in camera modules, body electronics, and infotainment systems. Its robust 42V input rating and built-in protection features meet ISO 7637-2 transient immunity requirements.
LT8606EDC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 12V
- Current - Output:
- 350mA
- Frequency - Switching:
- 200kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
LT8606EDC#TRPBF FAQ
1.How can I place an order for LT8606EDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8606EDC#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 LT8606EDC#TRPBF reliable?
The price and inventory of LT8606EDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8606EDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8606EDC#TRPBF?
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4.How is shipping managed for LT8606EDC#TRPBF?
LT8606EDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8606EDC#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 LT8606EDC#TRPBF?
For technical support, including LT8606EDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8606EDC#TRPBF requirements.
6.How does Aetrix verify that LT8606EDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8606EDC#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 LT8606EDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8606EDC#TRPBF?
All LT8606EDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8606EDC#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 LT8606EDC#TRPBF part is unused and in its original packaging.
Return procedure for LT8606EDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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