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Analog Devices Inc. LT8606HMSE#TRPBF
- Part No.:
- LT8606HMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8606HMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 350MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,165
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Product details
Overview
LT8606HMSE#TRPBF from Analog Devices is a 42V, 350mA synchronous step-down regulator in thermally enhanced 10-lead MSOP package, featuring 1.7µA non-switching quiescent current, 35ns minimum on-time, and peak current mode control with internal compensation. It delivers regulated 3.3V or 5V outputs for automotive infotainment power rails, industrial sensor nodes, and always-on telematics modules.
For engineers reviewing the LT8606HMSE#TRPBF datasheet, LT8606HMSE#TRPBF pinout, LT8606HMSE#TRPBF application, or LT8606HMSE#TRPBF equivalent, key selection criteria include ultralow IQ at light load, AEC-Q100 qualification to 150°C junction, spread-spectrum EMI reduction capability, and programmable 200kHz–2.2MHz switching via RT resistor.
Technical Context
The LT8606HMSE#TRPBF implements constant-frequency peak current mode control with internal 0.778V reference and 35ns minimum top-FET on-time, enabling high VIN/VOUT ratios and fast transient response. Its architecture integrates a 3.5V INTVCC regulator, open-drain PG output with ±8.5% threshold, and EN/UV pin with 1.05V rising threshold and 50mV hysteresis.
As an MSOP variant, it includes SYNC and TR/SS pins-enabling external clock synchronization, soft-start programming, output voltage tracking, and spread-spectrum modulation-unavailable in DFN versions. The exposed thermal pad (Pin 11) must be soldered to PCB ground for θJA = 40°C/W thermal performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports 12V/24V/36V automotive battery systems with cold-crank tolerance. |
| Quiescent Current | 1.7µA (non-switching) - enables >10-year battery life in always-on vehicle event recorders. |
| Max Output Current | 350mA continuous - sufficient for powering microcontrollers, CAN transceivers, and low-power sensors. |
| Switching Frequency | 200kHz to 2.2MHz (RT-programmable) - allows trade-off between small 2mm × 2mm inductors and efficiency. |
| Feedback Reference | 0.778V ±12mV - enables precise output regulation with 1% FB resistors and low divider current. |
| Min On-Time | 35ns - supports 12V-to-1.2V conversion at 2MHz without pulse-skipping instability. |
| Thermal Rating | Junction range –40°C to +150°C - qualified per AEC-Q100 Grade H for under-hood applications. |
Pinout & Package
LT8606HMSE#TRPBF uses a 10-lead plastic MSOP package with exposed thermal pad (Pin 11 = GND). The pad must be soldered to PCB ground plane for thermal integrity and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply for high-side NMOS gate drive | Requires 0.1µF ceramic capacitor to SW; no series resistor allowed. |
| SW | Switch node connecting internal FETs to inductor | Must be minimized on PCB layout to reduce EMI and switching losses. |
| INTVCC | Internal 3.5V regulator output | Bypass with ≥1µF low-ESR ceramic; not for external loading. |
| RT | Resistor-based oscillator frequency programming | RT-to-GND sets fSW from 200kHz to 2.2MHz; critical for EMI filtering design. |
| SYNC | External clock input or mode select | Ground = Burst Mode; float = pulse-skipping; 3.2–5V = spread-spectrum modulation. |
| EN/UV | Enable and input undervoltage lockout | 1.05V rising threshold enables VIN brownout protection down to ~3.2V. |
| PG | Open-drain Power Good indicator | Pulls low when VOUT deviates >±8.5% or during fault; requires pull-up resistor. |
| TR/SS | Soft-start and output voltage tracking | 2µA internal current source enables RC-programmed ramp rate or external tracking. |
| FB | Feedback input referenced to 0.778V | Regulates output via resistor divider; 10pF phase-lead cap recommended for stability. |
| GND | Power and signal ground (exposed pad) | Exposed Pad (Pin 11) is GND and must be soldered to PCB thermal plane. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 1.7µA non-switching current enables >10-year battery operation in always-on automotive modules. |
| Spread-Spectrum Modulation | Reduces peak radiated EMI by up to 20dB in CISPR25 Class 5 tests without added filters. |
| AEC-Q100 Grade H Qualification | Validated for –40°C to +150°C junction operation - suitable for engine control and ADAS power supplies. |
| 35ns Minimum On-Time | Enables high-step-down ratios (e.g., 12V→1.2V @ 2MHz) without frequency foldback or instability. |
| Internal Compensation | Eliminates external compensation components - reduces BOM count and layout sensitivity. |
Applications
| Automotive Infotainment Power | Industrial Sensor Node Supply |
|---|---|
Use Scenario: Powering SoC cores, display drivers, and audio codecs in head units with 12V battery input and cold-crank survival. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck converter with PG signaling and UVLO protection. Use Value: 1.7µA IQ extends backup battery life; 42V rating handles load-dump transients; spread-spectrum meets CISPR25 Class 5. | Use Scenario: Providing regulated 3.3V for wireless sensor transceivers (LoRa, NB-IoT) in remote condition monitoring systems. IC Role / Device Role / Timing Role: Always-on step-down regulator with soft-start and tracking for multi-rail sequencing. Use Value: 35ns min-on-time supports wide VIN ranges; TR/SS pin enables controlled startup into capacitive loads. |
| Telematics Control Unit (TCU) | ADAS Camera Module Supply |
Use Scenario: Generating 3.3V for GPS/GNSS receivers and cellular modems in vehicle black boxes with persistent memory retention. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC/DC with EN/UV-controlled wake-up and PG status reporting. Use Value: <3µA IQ at 12VIN→3.3VOUT enables >5-year coin-cell backup; AEC-Q100 H-grade ensures reliability. | Use Scenario: Delivering clean 1.8V/3.3V rails to image sensors and ISP processors in front-facing driver-assist cameras. IC Role / Device Role / Timing Role: Low-EMI synchronous buck with fast transient response to handle burst-mode imaging loads. Use Value: Peak current mode control + 35ns on-time delivers <10mVP-P ripple; SYNC pin enables EMI synchronization with camera frame timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8607HMSE#TRPBF | Same package and pinout; adds integrated 1.2Ω/0.8Ω MOSFETs with 500mA output capability and lower RDS(ON). | Higher output current and improved efficiency at full load; same IQ and thermal rating. | Select when >350mA continuous current or <100mV dropout at 350mA is required. |
| MPQ4420AGL-A-Z | 36V, 2A monolithic buck; 17µA IQ (Burst Mode); no SYNC/TR/SS; QFN-10 package; not AEC-Q100 qualified. | Larger current capacity but higher IQ and no automotive qualification; lacks spread-spectrum or tracking. | Select for cost-sensitive industrial applications where AEC-Q100 and ultralow IQ are not mandatory. |
Compared with LT8607HMSE#TRPBF, the LT8606HMSE#TRPBF offers identical footprint and feature set at lower cost and current rating, while MPQ4420AGL-A-Z provides higher output current but sacrifices automotive qualification, EMI control, and sub-2µA quiescent performance.
Availability
LT8606HMSE#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor networks, and ADAS camera modules requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for LT8606HMSE#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 automotive, industrial, communications, and healthcare markets.
The LT8606 product line delivers ultralow-quiescent-current synchronous buck regulators optimized for automotive and always-on embedded systems where battery longevity and EMI compliance are critical.
FAQ
What is the maximum junction temperature rating for LT8606HMSE#TRPBF?
The LT8606HMSE#TRPBF is AEC-Q100 qualified to Grade H with guaranteed operation from –40°C to +150°C junction temperature. This rating is validated through process characterization and statistical controls-not just design simulation-and applies across the full operating voltage and load range specified in the datasheet. Derating is required above 125°C for extended lifetime reliability.
Does LT8606HMSE#TRPBF support spread-spectrum frequency modulation?
Yes, LT8606HMSE#TRPBF supports spread-spectrum modulation when the SYNC pin is tied to a voltage between 3.2V and 5.0V. This feature reduces peak radiated emissions by modulating the switching frequency ±10% around the RT-set center frequency, enabling compliance with CISPR25 Class 5 limits without additional EMI filter components. The LT8606HMSE#TRPBF datasheet confirms 0.5–6kHz modulation frequency range.
Can LT8606HMSE#TRPBF operate with a 2.5V input voltage?
No, LT8606HMSE#TRPBF has a minimum input voltage of 3.0V (typical) and 2.5V (absolute minimum) per datasheet Electrical Characteristics. At 2.5V input, the device may fail to regulate or enter undervoltage lockout due to insufficient headroom for the internal 3.5V INTVCC regulator and top-FET gate drive. Reliable operation begins at VIN ≥ 3.2V, especially under load.
What is the purpose of the TR/SS pin on LT8606HMSE#TRPBF?
The TR/SS pin on LT8606HMSE#TRPBF serves dual functions: soft-start control and output voltage tracking. An internal 2µA current source charges an external capacitor to program output voltage slew rate during startup. When driven externally, it enables tracking of another supply rail-critical for sequencing multi-voltage SoCs. This pin is absent on DFN variants and exclusive to MSOP packages like LT8606HMSE#TRPBF.
How does the PG pin behave during startup and fault conditions for LT8606HMSE#TRPBF?
The PG pin on LT8606HMSE#TRPBF is an open-drain output that remains high-impedance until VIN exceeds 3.2V and EN/UV is high. It pulls low only when the FB voltage is within ±8.5% of the target output and no fault (e.g., overtemperature, short circuit) is detected. During startup, PG stays high until regulation is achieved; during UVLO or shutdown, PG is actively pulled low if VIN > 3.2V and EN/UV is low.
LT8606HMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
LT8606HMSE#TRPBF FAQ
1.How can I place an order for LT8606HMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8606HMSE#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 LT8606HMSE#TRPBF reliable?
The price and inventory of LT8606HMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8606HMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8606HMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8606HMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8606HMSE#TRPBF?
LT8606HMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8606HMSE#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 LT8606HMSE#TRPBF?
For technical support, including LT8606HMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8606HMSE#TRPBF requirements.
6.How does Aetrix verify that LT8606HMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8606HMSE#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 LT8606HMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8606HMSE#TRPBF?
All LT8606HMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8606HMSE#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 LT8606HMSE#TRPBF part is unused and in its original packaging.
Return procedure for LT8606HMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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