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Analog Devices Inc. LT8607EDC#TRPBF
- Part No.:
- LT8607EDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8607EDC#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 750MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,216
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Product details
Overview
LT8607EDC#TRPBF from Analog Devices is a 42V, 750mA synchronous step-down regulator in an 8-lead 2mm × 2mm DFN package, featuring 2.5µA quiescent current in Burst Mode operation, 35ns minimum on-time, and internal compensation for fast transient response. It delivers regulated 3.3V or adjustable output in automotive and industrial power systems with wide input range (3.0V–42V).
For engineers reviewing the LT8607EDC#TRPBF datasheet, LT8607EDC#TRPBF pinout, LT8607EDC#TRPBF application, or LT8607EDC#TRPBF equivalent, key selection criteria include ultralow IQ at light load, EMI-reduced Burst Mode operation, fixed-frequency programmability (200kHz–2.2MHz), thermal performance in DFN-8, and AEC-Q100 qualification for automotive use.
Technical Context
The LT8607EDC#TRPBF implements peak current mode control with internal compensation, enabling stable operation with small external inductors (e.g., 2.2µH) and fast load transient recovery. Its Burst Mode architecture dynamically reduces switching frequency under light loads while maintaining <10mVP-P output ripple and regulating down to 3.0µA total input current.
This DFN variant omits SYNC and TR/SS pins-internally tying SYNC to ground-so it operates exclusively in low-ripple Burst Mode (not pulse-skipping or spread spectrum). The 0.778V feedback reference and ±8.5% power-good threshold support precise regulation across –40°C to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports 12V/24V/36V automotive and industrial rails without pre-regulation. |
| Max Output Current | 750mA continuous - sufficient for microcontrollers, sensors, and interface ICs in space-constrained designs. |
| Quiescent Current | 2.5µA typical in Burst Mode - enables >10-year battery life in always-on IoT and telematics applications. |
| Switching Frequency | 200kHz to 2.2MHz (RT-programmable) - allows trade-off between inductor size (e.g., 4.7µH @ 2MHz) and efficiency. |
| Min On-Time | 35ns - enables high VIN/VOUT ratios (e.g., 42V→3.3V) without pulse skipping or instability. |
| Feedback Reference | 0.778V ±12mV - sets output accuracy; combined with 1% resistors yields ±1.5% VOUT tolerance over temp. |
| Power-Good Threshold | ±8.5% of FB voltage - provides reliable rail monitoring for system sequencing and fault detection. |
Pinout & Package
LT8607EDC#TRPBF uses an 8-lead, 2mm × 2mm plastic DFN package with exposed thermal pad (Pin 9 = GND). The package has θJA = 102°C/W and requires soldering the exposed pad to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply | Drives top MOSFET gate above VIN; requires 0.1µF ceramic capacitor placed adjacent to IC. |
| SW | Switch node | Connects to inductor and BST capacitor; must be minimized in layout to reduce EMI and switching losses. |
| INTVCC | Internal 3.5V regulator bypass | Decoupled with ≥1µF low-ESR ceramic; powers internal logic and drivers; not for external loading. |
| RT | Frequency programming | Resistor to GND sets fSW from 200kHz to 2.2MHz; no SYNC pin means fixed Burst Mode only. |
| EN/UV | Enable / input UVLO | 1.05V rising threshold; used to shut down IC (IIN drops to 1µA) or program VIN undervoltage lockout. |
| VIN | Main input supply | Supplies internal circuitry and top switch; requires local high-frequency ceramic input capacitor. |
| PG | Power-good open-drain | Asserts low when VFB is within ±8.5% of 0.778V and EN/UV is high; needs external pull-up. |
| FB | Feedback input | Regulated to 0.778V; connects to resistor divider for adjustable output; 10pF phase-lead cap recommended with high-R dividers. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 2.5µA typical input current at no load enables multi-year operation from coin cells or energy harvesters. |
| 35ns Minimum On-Time | Supports direct 42V-to-3.3V conversion without intermediate stages, reducing BOM count and board area. |
| Internal Compensation | Eliminates external compensation components, simplifying design and improving production consistency. |
| AEC-Q100 Qualified | Rated for automotive applications (Grade E: –40°C to +125°C junction), including engine control and ADAS subsystems. |
| Low EMI Switching | Burst Mode + fast edges + integrated bootstrap diode reduce radiated emissions; passes CISPR 25 Class 5 with filter. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Powering CAN transceiver, microcontroller, and LIN interface in door module with 12V battery input subject to cold-crank (4.5V) and load-dump (40V) events. IC Role / Device Role / Timing Role: Primary 3.3V buck regulator delivering 500mA with <10mVP-P ripple and 2.5µA quiescent current during sleep mode. Use Value: Enables always-on monitoring with <10µA system standby current and seamless wake-up from battery-saving states. | Use Scenario: Regulating 5V or 3.3V for wireless sensor nodes deployed in remote factory environments with 24V DC supply. IC Role / Device Role / Timing Role: High-efficiency, wide-input buck converter supporting intermittent RF transmission bursts and long idle periods. Use Value: Extends battery life by >3× vs conventional regulators due to 2.5µA IQ and fast transient response to sensor-triggered activity. |
| Medical Portable Monitor | Railway Signaling Interface |
Use Scenario: Powering display controller, touch IC, and data logger in handheld diagnostic equipment operating from rechargeable Li-ion (3.0V–4.2V) or 12V adapter. IC Role / Device Role / Timing Role: Adjustable-output buck supplying 3.3V/500mA with soft-start and PG signaling for safe system boot. Use Value: Ensures clean power delivery during battery voltage sag and meets IEC 60601 EMI limits without added filtering. | Use Scenario: Converting 72V or 110V nominal railway supply to isolated 5V for communication interfaces in track-side electronics. IC Role / Device Role / Timing Role: Input-stage buck regulator handling 42V absolute max, providing robust 5V rail before isolation and level-shifting. Use Value: Survives 150V transients per EN 50155 and maintains regulation during brownouts, ensuring uninterrupted data link uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8606EDC#TRPBF | Same DFN-8 package, 42V/600mA, identical Burst Mode IQ (2.5µA), but lower current rating and no PG pin. | Lacks power-good signaling; unsuitable where rail monitoring or sequencing is required. | Select when 600mA suffices and PG is unnecessary-reduces cost and footprint marginally. |
| LMQ66430QRNXTQ1 | Automotive-grade 42V/3A buck with 15µA IQ, adjustable frequency (200kHz–2.2MHz), but larger 16-pin WQFN package. | Higher output current and integrated EMI filters; higher IQ limits ultra-low-power use cases. | Choose for higher load demands (>750mA) or when integrated EMI mitigation is prioritized over minimal IQ. |
Compared with LT8606EDC#TRPBF and LMQ66430QRNXTQ1, the LT8607EDC#TRPBF uniquely balances 750mA capability, 2.5µA IQ, PG functionality, and compact DFN-8 packaging-making it optimal for space- and power-constrained automotive and industrial modules requiring precise rail supervision.
Availability
LT8607EDC#TRPBF is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor nodes, portable medical monitors, and railway signaling interfaces requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for LT8607EDC#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, communications, and automotive markets since 1965.
The LT8607/LT8607B product line was designed for high-efficiency, ultralow-quiescent-current DC/DC conversion in automotive and industrial systems where battery life, thermal constraints, and EMI compliance are critical.
FAQ
What is the maximum output current capability of the LT8607EDC#TRPBF?
The LT8607EDC#TRPBF delivers up to 750mA of continuous output current under thermal limits defined by its DFN-8 package and PCB layout. This rating assumes adequate copper area for the exposed thermal pad and ambient temperature ≤85°C. At full load and 12VIN→5VOUT, efficiency exceeds 93%, and junction temperature rise remains within the –40°C to +125°C operating range specified for the LT8607EDC#TRPBF.
Does the LT8607EDC#TRPBF support adjustable output voltage?
Yes, the LT8607EDC#TRPBF supports adjustable output voltage via an external resistor divider connected to the FB pin, which is regulated to 0.778V. Using the formula R1 = R2 × (VOUT/0.778V − 1), designers can set outputs from ~1.8V to 42V. The LT8607EDC#TRPBF does not include a fixed-output variant-unlike the LT8607-5 series-and requires external feedback components for all configurations.
How does the LT8607EDC#TRPBF achieve ultralow quiescent current?
The LT8607EDC#TRPBF achieves 2.5µA typical quiescent current by entering Burst Mode operation at light loads: it delivers discrete energy packets to the output capacitor, then shuts down most internal circuitry-including the oscillator-during extended sleep intervals. This behavior is inherent to the DFN variant, as its SYNC pin is internally grounded, enforcing Burst Mode exclusively. Total input current drops to ~3.0µA at zero load in typical applications.
Is the LT8607EDC#TRPBF pin-compatible with other LT8607 variants?
No, the LT8607EDC#TRPBF is not pin-compatible with MSOP-packaged LT8607 variants (e.g., LT8607EMSE#TRPBF) due to differing pin counts (8 vs. 10) and missing SYNC/TR/SS pins. While both share VIN, GND, SW, BST, INTVCC, EN/UV, PG, and FB connections, the MSOP version adds dedicated SYNC and TR/SS pins absent in the DFN. Layout redesign is required when substituting between packages.
What thermal considerations apply to the LT8607EDC#TRPBF in high-temperature environments?
The LT8607EDC#TRPBF is rated for operation from –40°C to +125°C junction temperature. Its DFN-8 package has θJA = 102°C/W, so thermal performance depends critically on PCB copper area under the exposed pad (Pin 9 = GND). For ambient temperatures approaching 105°C, designers must provide ≥200mm² of 2-oz copper tied to multiple thermal vias to maintain TJ ≤125°C at 750mA. Derating is required above 85°C ambient unless enhanced cooling is implemented.
LT8607EDC#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:
- 750mA
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
LT8607EDC#TRPBF FAQ
1.How can I place an order for LT8607EDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8607EDC#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 LT8607EDC#TRPBF reliable?
The price and inventory of LT8607EDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8607EDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8607EDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8607EDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8607EDC#TRPBF?
LT8607EDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8607EDC#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 LT8607EDC#TRPBF?
For technical support, including LT8607EDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8607EDC#TRPBF requirements.
6.How does Aetrix verify that LT8607EDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8607EDC#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 LT8607EDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8607EDC#TRPBF?
All LT8607EDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8607EDC#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 LT8607EDC#TRPBF part is unused and in its original packaging.
Return procedure for LT8607EDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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