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Analog Devices Inc. LT8607IMSE#TRPBF
- Part No.:
- LT8607IMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8607IMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 750MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:310
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Product details
Overview
LT8607IMSE#TRPBF from Analog Devices is a 42V, 750mA synchronous step-down regulator in a thermally enhanced 10-lead MSOP package, featuring 2.5µA quiescent current in Burst Mode, 35ns minimum on-time, and internal compensation for fast transient response. It delivers regulated 5V output (fixed version) with <10mVP-P ripple and >93% efficiency at 0.5A (12VIN to 5VOUT), targeting always-on automotive and industrial power rails.
For engineers reviewing the LT8607IMSE#TRPBF datasheet, LT8607IMSE#TRPBF pinout, LT8607IMSE#TRPBF application, or LT8607IMSE#TRPBF equivalent, key selection criteria include ultralow IQ regulation down to 3µA no-load, AEC-Q100 qualification, programmable 200kHz–2.2MHz switching frequency via RT resistor, and SYNC/ TR/SS pins enabling external clock synchronization, soft-start control, and output voltage tracking.
Technical Context
The LT8607IMSE#TRPBF implements peak current mode control with internal 0.778V reference and fixed-frequency PWM architecture. Its 35ns minimum on-time enables high VIN/VOUT ratios (e.g., 42V→3.3V) without pulse-skipping instability, while internal compensation eliminates external compensation components.
Burst Mode operation reduces input supply current to 1.7µA during sleep cycles, maintaining output regulation with sub-10mVP-P ripple; the EN/UV pin provides accurate 1.05V rising threshold with 50mV hysteresis for programmable undervoltage lockout or shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports wide automotive battery transients and industrial 24V/36V rails. |
| 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 optimization of inductor size (e.g., 4.7µH @ 2MHz) vs. efficiency trade-off. |
| Feedback Reference | 0.778V ±12mV - precise internal reference enabling tight output tolerance with 1% FB resistors. |
| Min On-Time | 35ns - supports high step-down ratios (e.g., 42V→3.3V @ 2MHz) without forced discontinuous conduction. |
| Power Good Threshold | ±8.5% of VFB - provides reliable output voltage monitoring for system sequencing and fault detection. |
Pinout & Package
LT8607IMSE#TRPBF uses a 10-lead plastic MSOP package with exposed thermal pad (Pin 11 = GND), θJA = 40°C/W. The exposed pad must be soldered to PCB ground plane for thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap Supply | Drives top MOSFET gate above VIN; requires 0.1µF ceramic capacitor to SW for proper high-side switching. |
| SW | Switch Node | Connection point for inductor and BST capacitor; critical high-dI/dt node requiring minimized PCB loop area. |
| INTVCC | Internal 3.5V Regulator Bypass | Must be decoupled with ≥1µF low-ESR ceramic to GND; powers internal logic and drivers. |
| RT | Frequency Set Resistor | Resistor to GND programs switching frequency from 200kHz to 2.2MHz; sets oscillator timing. |
| SYNC | External Clock Input | Ground for Burst Mode; float for pulse-skipping; tie to INTVCC for spread-spectrum EMI reduction. |
| EN/UV | Enable / Undervoltage Lockout | 1.05V rising threshold with 50mV hysteresis; enables shutdown or programmable VIN UVLO. |
| PG | Power Good Open-Drain Output | Asserts low when VFB is within ±8.5% of 0.778V and no faults; requires external pull-up. |
| TR/SS | Tracking / Soft-Start | Programs output ramp rate via capacitor; enables output voltage tracking in multi-rail systems. |
| FB | Feedback Input | Regulated to 0.778V; connects to resistor divider for adjustable output or omitted for LT8607-5 fixed 5V version. |
| GND | Ground / Exposed Pad | Primary return path for power and signal; exposed pad (Pin 11) must be soldered to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Rated for –40°C to 125°C junction temperature - validated for automotive infotainment, ADAS, and body electronics. |
| Ultralow IQ Burst Mode | 2.5µA typical input current at no load - extends battery runtime in always-on vehicle modules and remote sensors. |
| Spread Spectrum Modulation | Reduces peak radiated EMI by up to 20dB - meets CISPR 25 Class 5 limits without external filters on demo boards. |
| Fast Minimum On-Time | 35ns enables 42V→3.3V conversion at 2MHz - avoids low-frequency instability in high-VIN applications. |
| Internal Compensation | Eliminates external compensation network - simplifies layout, reduces BOM count, and ensures stable loop across temperature. |
Applications
| Automotive Infotainment Power | Industrial Sensor Node Supply |
|---|---|
Use Scenario: Powering SoC, display controller, and audio codec in head unit with cold-crank (4.5V) and load-dump (42V) conditions. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering 750mA with ultralow IQ to maintain memory retention during ignition-off. Use Value: 2.5µA quiescent current prevents battery drain over months; 42V absolute max rating withstands ISO 7637-2 pulses. | Use Scenario: Providing stable 3.3V rail for wireless sensor nodes deployed in remote factory environments with 24V DC supply. IC Role / Device Role / Timing Role: High-efficiency step-down converter operating continuously at light loads (<1mA) with minimal self-heating. Use Value: >90% efficiency at 100µA load and <10mVP-P ripple ensure clean analog sensing and reliable RF transmission. |
| Telematics Control Unit (TCU) | Medical Portable Monitor |
Use Scenario: Generating 5V for GPS module, cellular modem, and CAN transceiver in vehicle black box with strict EMI requirements. IC Role / Device Role / Timing Role: Synchronous buck with spread spectrum modulation to meet CISPR 25 Class 5 radiated emissions limits. Use Value: Integrated spread spectrum reduces peak EMI by >15dB at 100–500MHz - eliminates need for ferrite beads or shielded inductors. | Use Scenario: Powering patient interface MCU and OLED display in battery-operated vital signs monitor requiring multi-year shelf life. IC Role / Device Role / Timing Role: Always-on 3.3V regulator with programmable soft-start to prevent inrush current during wake-up from deep sleep. Use Value: TR/SS pin enables controlled 10ms output ramp, avoiding brown-out resets in sensitive analog front-end circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8609SIMSE#TRPBF | Higher 2A output current, same 42V input, 2.5µA IQ, but adds integrated inductor option and improved EMI filtering. | Preferred for higher-current loads (>750mA) or where board space is extremely constrained (µModule variant available). | Select LT8609S when output current exceeds 750mA or when integrated inductor simplifies design validation. |
| TPS62840DRVR | 2.5V–6.5V input, 1A output, 60nA IQ (lower), but only 6.5V max input - not suitable for 12V/24V/42V automotive rails. | Only viable for low-input-voltage portable electronics; cannot replace LT8607IMSE#TRPBF in automotive or industrial 12V+ systems. | Choose TPS62840 only for battery-powered devices with VIN < 6.5V where nanoscale IQ is critical. |
Compared with LT8609SIMSE#TRPBF and TPS62840DRVR, the LT8607IMSE#TRPBF uniquely balances 42V input capability, 750mA output, and 2.5µA IQ in a standard MSOP package - making it optimal for cost-sensitive, space-constrained automotive and industrial converters where 1A+ current or sub-6.5V input are not required.
Availability
LT8607IMSE#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor nodes, telematics control units, and portable medical monitors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LT8607IMSE#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, industrial automation, communications, and automotive markets.
The LT8607 family was designed specifically for ultralow-quiescent-current, high-input-voltage DC/DC conversion in automotive and industrial applications demanding reliability under harsh electrical and thermal conditions.
FAQ
What is the maximum input voltage rating for the LT8607IMSE#TRPBF?
The LT8607IMSE#TRPBF has an absolute maximum input voltage rating of 42V on the VIN and EN/UV pins. This allows direct connection to 24V and 36V industrial rails and full compliance with automotive load-dump transients per ISO 7637-2. Operation above 42V risks permanent damage, and the device incorporates internal overvoltage protection to safeguard against transient spikes.
Does the LT8607IMSE#TRPBF support fixed 5V output or only adjustable configurations?
The LT8607IMSE#TRPBF is the adjustable version of the LT8607 family and does not integrate a fixed 5V feedback divider. It regulates the FB pin to 0.778V and requires an external resistor divider to set the output voltage. For fixed 5V output, the LT8607-5MSE variants (e.g., LT8607-5IMSE#TRPBF) are used instead, which internally connect the VOUT pin to a 6.6MΩ divider.
How does the SYNC pin function on the LT8607IMSE#TRPBF?
The SYNC pin on the LT8607IMSE#TRPBF enables multiple operating modes: grounding it selects low-ripple Burst Mode; floating it enables pulse-skipping; tying it to INTVCC (3.2–5.0V) activates spread-spectrum modulation. Unlike the DFN variants, the MSOP package retains full SYNC functionality, allowing EMI optimization and external clock synchronization without changing the bill of materials.
What thermal performance can be expected from the LT8607IMSE#TRPBF in a typical PCB layout?
With its exposed thermal pad (Pin 11) properly soldered to a 2cm² copper pour on the PCB, the LT8607IMSE#TRPBF achieves θJA ≈ 40°C/W. At 750mA output and 12VIN→5VOUT, power dissipation is ~0.5W, resulting in ~20°C junction-to-ambient rise - well within the –40°C to 125°C operating range. Thermal derating begins above 125°C junction temperature.
Is the LT8607IMSE#TRPBF qualified for automotive applications?
Yes, the LT8607IMSE#TRPBF is AEC-Q100 qualified for automotive applications and rated for operation from –40°C to +125°C junction temperature. It undergoes rigorous stress testing including HTOL, TC, and ESD per AEC-Q100 Rev H, and is approved for use in infotainment, telematics, and body electronics where reliability under vibration, temperature cycling, and voltage transients is mandatory.
LT8607IMSE#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:
- 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:
- 10-MSOP-EP
LT8607IMSE#TRPBF FAQ
1.How can I place an order for LT8607IMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8607IMSE#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 LT8607IMSE#TRPBF reliable?
The price and inventory of LT8607IMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8607IMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8607IMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8607IMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8607IMSE#TRPBF?
LT8607IMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8607IMSE#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 LT8607IMSE#TRPBF?
For technical support, including LT8607IMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8607IMSE#TRPBF requirements.
6.How does Aetrix verify that LT8607IMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8607IMSE#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 LT8607IMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8607IMSE#TRPBF?
All LT8607IMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8607IMSE#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 LT8607IMSE#TRPBF part is unused and in its original packaging.
Return procedure for LT8607IMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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