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Analog Devices Inc. LT8607IDC#TRMPBF
- Part No.:
- LT8607IDC#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8607IDC#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 750MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,471
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Product details
Overview
LT8607IDC#TRMPBF 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) and low EMI.
For engineers reviewing the LT8607IDC#TRMPBF datasheet, LT8607IDC#TRMPBF pinout, LT8607IDC#TRMPBF application, or LT8607IDC#TRMPBF equivalent, key selection criteria include ultralow IQ at light load, fixed Burst Mode functionality (no SYNC pin), thermal performance in DFN-8, AEC-Q100 qualification, and compatibility with small inductors down to 2.2µH.
Technical Context
The LT8607IDC#TRMPBF implements peak current mode control with internal 0.778V feedback reference and fixed Burst Mode operation-no SYNC pin present, eliminating external clock synchronization or spread spectrum modulation capability. Its 35ns minimum on-time enables high VIN/VOUT ratios (e.g., 42V→3.3V) at 2MHz switching.
Thermal design relies on the exposed GND pad (Pin 9), with θJA = 102°C/W; it integrates undervoltage lockout via EN/UV (1.05V threshold), open-drain Power Good (PG) with ±8.5% regulation window, and internal top/bottom MOSFETs (375mΩ/240mΩ typical RDS(on)).
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. |
| Output Current | 750mA continuous - sufficient for microcontrollers, sensors, and interface ICs in space-constrained designs. |
| Quiescent Current | 2.5µA in Burst Mode - enables >10-year battery life in always-on IoT nodes powered from coin cells or supercaps. |
| Switching Frequency | 200kHz to 2.2MHz (RT-programmable) - allows optimization of inductor size (e.g., 2.2µH at 2MHz) vs. efficiency. |
| Feedback Reference | 0.778V (DFN package) - sets output accuracy; combined with 1% resistors yields ±1.5% total VOUT tolerance. |
| Min On-Time | 35ns - enables high-step-down conversion (e.g., 42V→3.3V) at 2MHz without pulse-skipping instability. |
| Package | 8-Lead 2mm × 2mm DFN with exposed GND pad - provides compact footprint and enhanced thermal dissipation for PCB-limited applications. |
Pinout & Package
LT8607IDC#TRMPBF uses an 8-lead plastic DFN (2mm × 2mm) with exposed thermal pad (Pin 9 = GND). The package lacks SYNC and TR/SS pins-Burst Mode is fixed and soft-start is internally controlled.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply for high-side MOSFET gate drive | Requires 0.1µF ceramic capacitor to SW; no series resistor allowed-critical for reliable 42V operation. |
| SW | Switch node connecting internal FETs to inductor | High dv/dt node; must be minimized on PCB to reduce EMI and prevent false triggering of internal logic. |
| INTVCC | Internal 3.5V regulator bypass | Must be decoupled with ≥1µF low-ESR ceramic to GND; external loading degrades regulation and efficiency. |
| RT | Resistor-based oscillator frequency programming | RT-to-GND sets fSW from 200kHz–2.2MHz; determines inductor/capacitor sizing trade-off. |
| EN/UV | Enable and input undervoltage lockout input | 1.05V rising threshold; hysteresis = 50mV; used to disable converter or program VIN UVLO with resistor divider. |
| VIN | Main input power supply connection | Supplies internal circuitry and top FET; requires local high-frequency ceramic input capacitor (≥4.7µF). |
| PG | Open-drain Power Good status indicator | Pulled low when FB is within ±8.5% of target; valid only when VIN > 3.2V and EN/UV high. |
| FB | Feedback input for adjustable output voltage | Regulated to 0.778V; connects to resistor divider; 10pF phase-lead cap recommended for stability with large dividers. |
| GND | Power and signal ground (exposed pad) | Exposed pad (Pin 9) must be soldered to PCB ground plane to achieve θJA = 102°C/W and ensure thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 2.5µA input current at no load enables multi-year operation from primary batteries in remote sensors. |
| Fixed Burst Mode Operation | No SYNC pin-eliminates layout complexity and external clock source; guarantees low-noise, low-ripple light-load behavior. |
| 35ns Minimum On-Time | Enables direct 42V-to-3.3V conversion at 2MHz without requiring intermediate stages or larger inductors. |
| AEC-Q100 Qualified | Rated for –40°C to +125°C junction temperature-validated for under-hood automotive applications including ADAS cameras and body controllers. |
| Integrated Power FETs | Top/bottom NMOS with 375mΩ/240mΩ RDS(on) eliminate external MOSFETs and gate drivers, reducing BOM count and board area. |
Applications
| Automotive Camera Power Supply | Industrial Sensor Node Regulator |
|---|---|
Use Scenario: Powering 3.3V image sensor and ISP in rear-view camera module with 12V battery input subject to cold-crank (6V) and load-dump (40V) transients. IC Role / Device Role / Timing Role: Primary DC/DC regulator delivering stable 3.3V at up to 750mA with <10mVP-P ripple during video capture bursts. Use Value: 2.5µA IQ extends backup battery life during vehicle sleep mode; 42V rating withstands ISO 7637-2 pulses without protection circuitry. | Use Scenario: Compact wireless vibration sensor node powered by Li-SOCl₂ battery, requiring regulated 3.3V for MCU, RF transceiver, and MEMS accelerometer. IC Role / Device Role / Timing Role: Always-on buck converter operating in Burst Mode to maintain VOUT while minimizing self-discharge of primary cell. Use Value: 35ns min on-time enables single-stage 3.6V–36V input range coverage; DFN-8 footprint fits sub-100mm² PCB area budget. |
| Medical Portable Monitor Bias Rail | Railway Signaling Interface Power |
Use Scenario: Generating isolated 5V bias for analog front-end in handheld ECG monitor using unregulated 7–30V input from rechargeable pack. IC Role / Device Role / Timing Role: Non-isolated step-down stage preceding isolated DC/DC; supplies 500mA with <10mVP-P ripple to minimize noise coupling into analog signal chain. Use Value: Internal compensation eliminates external compensation components; 2MHz operation allows use of 2.2µH inductor for ultra-thin profile design. | Use Scenario: Powering RS-485 transceivers and microcontroller in trackside signaling unit with 24V–110V DC rail and strict EMC requirements per EN 50121-3-2. IC Role / Device Role / Timing Role: Low-EMI primary regulator feeding downstream LDOs; operates in fixed Burst Mode to suppress conducted emissions. Use Value: Spread-spectrum not available-but fixed Burst Mode inherently reduces spectral peaks; radiated EMI meets CISPR 25 Class 5 with minimal filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8607EDC#TRMPBF | Same DFN-8 package and Burst Mode operation, but rated for –40°C to +125°C (E-grade) instead of I-grade; FB reference tolerance tighter (±0.7% vs ±1.0% over temp). | Suitable for commercial/industrial environments without extended temperature validation requirements. | Select LT8607EDC#TRMPBF if AEC-Q100 is unnecessary and cost sensitivity outweighs guaranteed automotive qualification. |
| LT8607BIDC#TRMPBF | Same DFN-8 package but operates in pulse-skipping mode (not Burst Mode); higher no-load IQ (~500µA); no SYNC pin; 0.771V FB reference. | Better suited for applications needing faster light-load transient response and lower output ripple at medium loads (>50mA), where IQ penalty is acceptable. | Choose LT8607BIDC#TRMPBF when system-level EMI testing shows Burst Mode switching artifacts interfere with sensitive analog circuits. |
Compared with LT8607EDC#TRMPBF, the LT8607IDC#TRMPBF offers validated AEC-Q100 compliance for automotive use, while LT8607BIDC#TRMPBF trades ultralow IQ for improved transient behavior-making LT8607IDC#TRMPBF optimal for battery-powered automotive modules requiring long sleep-mode endurance.
Availability
LT8607IDC#TRMPBF is available at Aetrix Electronics and suitable for automotive camera systems, industrial IoT sensor nodes, portable medical monitors, and railway signaling interfaces requiring stable component supply across extended temperature and lifetime requirements.
Supply support for LT8607IDC#TRMPBF 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, communications, and automotive markets.
The LT8607 product line delivers ultralow-quiescent-current synchronous buck regulators for always-on systems-designed specifically for automotive infotainment, ADAS, and battery-backed industrial controls demanding high VIN tolerance and minimal standby power.
FAQ
What is the maximum input voltage rating for the LT8607IDC#TRMPBF?
The LT8607IDC#TRMPBF has an absolute maximum input voltage rating of 42V on the VIN and EN/UV pins. This allows direct operation from 24V and 36V industrial rails and automotive 12V/24V systems-including transient conditions like load dump per ISO 7637-2. Continuous operation above 42V risks permanent damage.
Does the LT8607IDC#TRMPBF support external frequency synchronization?
No, the LT8607IDC#TRMPBF does not support external frequency synchronization. As a DFN-package variant, it omits the SYNC pin entirely and operates exclusively in fixed Burst Mode. Unlike MSOP versions, it cannot be synchronized to an external clock, nor can it enter pulse-skipping or spread-spectrum modes.
What is the feedback reference voltage for the LT8607IDC#TRMPBF?
The LT8607IDC#TRMPBF regulates the FB pin to a nominal 0.778V, with a guaranteed range of 0.753V to 0.803V over temperature. This value is specified for the DFN package in the Electrical Characteristics table and is used to calculate output voltage via the external resistor divider (R1/R2).
How is thermal performance managed in the LT8607IDC#TRMPBF DFN package?
Thermal performance in the LT8607IDC#TRMPBF relies on soldering the exposed GND pad (Pin 9) directly to a PCB copper pour. With this implementation, the device achieves θJA = 102°C/W. For continuous 750mA operation at high ambient temperatures, a minimum 200mm² thermal pad connected to ≥2 internal ground planes is recommended to maintain junction temperature below 125°C.
Is the LT8607IDC#TRMPBF qualified for automotive applications?
Yes, the LT8607IDC#TRMPBF is AEC-Q100 qualified for automotive applications, rated for operation from –40°C to +125°C junction temperature. It is designated as an I-grade part and appears in Analog Devices' official automotive product list with full reliability test reports available upon request.
LT8607IDC#TRMPBF 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)
LT8607IDC#TRMPBF FAQ
1.How can I place an order for LT8607IDC#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8607IDC#TRMPBF 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 LT8607IDC#TRMPBF reliable?
The price and inventory of LT8607IDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8607IDC#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT8607IDC#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8607IDC#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8607IDC#TRMPBF?
LT8607IDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8607IDC#TRMPBF 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 LT8607IDC#TRMPBF?
For technical support, including LT8607IDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8607IDC#TRMPBF requirements.
6.How does Aetrix verify that LT8607IDC#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT8607IDC#TRMPBF 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 LT8607IDC#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT8607IDC#TRMPBF?
All LT8607IDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8607IDC#TRMPBF, 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 LT8607IDC#TRMPBF part is unused and in its original packaging.
Return procedure for LT8607IDC#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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