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Analog Devices Inc. LT8607IMSE#PBF
- Part No.:
- LT8607IMSE#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8607IMSE#PBF.pdf
- Description:
- IC REG BUCK ADJ 750MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,967
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Product details
Overview
LT8607IMSE#PBF 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), supports 200kHz–2.2MHz switching via RT resistor, and is AEC-Q100 qualified for automotive power rails.
For engineers reviewing the LT8607IMSE#PBF datasheet, LT8607IMSE#PBF pinout, LT8607IMSE#PBF application, or LT8607IMSE#PBF equivalent, key selection criteria include ultralow IQ at light load, spread spectrum EMI reduction, EN/UV programmable undervoltage lockout, and precise 1V enable threshold with hysteresis - all critical for battery-powered and automotive subsystems requiring high efficiency across wide VIN (3.0V–42V) and low-noise operation.
Technical Context
The LT8607IMSE#PBF implements peak current mode control with internal 0.778V reference and fixed-frequency PWM architecture. Its oscillator frequency is set by an external RT resistor (18.2kΩ for 2MHz) and supports synchronization, pulse-skipping, or spread spectrum modulation via the SYNC pin - exclusive to the MSOP package.
Burst Mode operation reduces input supply current to 1.7µA during sleep intervals while maintaining <10mVP-P output ripple; the EN/UV pin provides accurate 1.05V rising threshold with 50mV hysteresis for reliable VIN UVLO programming or shutdown control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports 12V/24V/36V automotive and industrial rails with margin for transients. |
| Output Current | 750mA continuous - sufficient for powering microcontrollers, sensors, and interface ICs without external boost. |
| Quiescent Current | 2.5µA typical in Burst Mode - enables >10-year battery life in always-on telematics or remote monitoring nodes. |
| Switching Frequency | 200kHz to 2.2MHz (RT-programmable) - allows trade-off between small 2.2µH inductors and high efficiency at medium loads. |
| Minimum On-Time | 35ns - enables high step-down ratios (e.g., 42V→3.3V) at 2MHz without pulse skipping or instability. |
| Feedback Reference | 0.778V ±0.012V - ensures tight output regulation accuracy over temperature and line/load conditions. |
| Power Good Threshold | ±8.5% of VFB - provides robust output voltage monitoring with built-in hysteresis for clean system reset signaling. |
Pinout & Package
LT8607IMSE#PBF uses a 10-lead plastic MSOP package with exposed thermal pad (Pin 11 = GND). The exposed pad must be soldered to PCB for θJA = 40°C/W thermal performance.
| 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 - critical for stable 42V operation. |
| SW | Switch node connecting internal top/bottom 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 output | Bypass with ≥1µF low-ESR ceramic; not for external loading - powers gate drivers and control circuitry. |
| RT | Oscillator frequency programming input | Resistor to GND sets fSW from 200kHz–2.2MHz; determines inductor size and light-load efficiency trade-off. |
| SYNC | External clock sync / mode selection | Ground = Burst Mode; float = pulse-skipping; INTVCC = spread spectrum - only available on MSOP package. |
| EN/UV | Enable and input undervoltage lockout input | 1.05V rising threshold with 50mV hysteresis - enables programmable VIN cutoff or remote shutdown. |
| PG | Open-drain Power Good output | Pulled low when FB is within ±8.5% of 0.778V and no fault - used for system sequencing and fault reporting. |
| TR/SS | Tracking and soft-start control | 2µA internal current source charges external capacitor for controlled VOUT ramp rate; enables output tracking in multi-rail systems. |
| FB | Feedback input for adjustable output versions | Regulated to 0.778V; connects to resistor divider - LT8607IMSE#PBF is fixed 5V, so FB is internally connected to VOUT via 6.6MΩ divider. |
| GND | Power and signal ground reference | Exposed pad (Pin 11) is GND and must be soldered to PCB plane - primary thermal path and noise reference. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 2.5µA in Burst Mode enables >10-year battery life in always-on automotive modules and IoT edge nodes. |
| Spread spectrum frequency modulation | Reduces peak radiated EMI by up to 20dB in CISPR 25 Class 5 tests - eliminates need for external EMI filters in space-constrained designs. |
| Fast minimum on-time (35ns) | Supports high VIN/VOUT ratios (e.g., 42V→3.3V) at 2MHz without frequency foldback or loss of regulation. |
| Internal compensation | Eliminates external compensation components - simplifies layout and improves stability across wide temperature and load ranges. |
| AEC-Q100 qualification | Rated for –40°C to +125°C junction temperature - validated for engine control units, ADAS cameras, and infotainment power supplies. |
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 vehicle battery input subject to cold-crank (4.5V) and load-dump (40V) transients. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing tightly regulated 3.3V at 500mA with Burst Mode for parking-mode operation. Use Value: 2.5µA IQ extends battery backup runtime during ignition-off; 42V absolute max rating withstands load dump without protection circuitry. | Use Scenario: Powering wireless sensor node (MCU + RF transceiver + analog front-end) from 24V industrial bus with strict EMI limits. IC Role / Device Role / Timing Role: High-efficiency step-down converter operating at 2MHz with spread spectrum to meet CISPR 25 Class 5 radiated emissions. Use Value: Enables use of 2.2µH inductor and 22µF output cap in compact 12mm × 12mm footprint; <10mVP-P ripple avoids ADC noise coupling. |
| Telematics Control Unit (TCU) Core Rail | Portable Medical Diagnostic Device |
Use Scenario: Generating 5V core supply for LTE modem and application processor in automotive TCU with 9–36V input range. IC Role / Device Role / Timing Role: Fixed 5V output buck regulator with PG signal for safe processor boot sequencing and fault detection. Use Value: Accurate 1V EN/UV threshold enables programmable brown-out detection; PG output asserts only after ±8.5% regulation is achieved. | Use Scenario: Battery-powered handheld ultrasound device requiring quiet 3.3V rail for sensitive analog receive chain and digital processing. IC Role / Device Role / Timing Role: Low-noise synchronous buck delivering 750mA with Burst Mode to extend Li-ion battery life between charges. Use Value: <10mVP-P output ripple prevents interference with 16-bit ADC sampling; 35ns min on-time supports 12V→3.3V conversion at 2MHz for compact design. |
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#PBF | Higher 2A output current, same 42V input, 2.5µA IQ, but adds integrated MOSFET drivers and higher pin count. | Required for >750mA loads; larger solution size due to extra driver pins and thermal requirements. | Select when output current exceeds 750mA or dual-output tracking is needed; not drop-in compatible. |
| TPS62840DRVR | 2.5V–6V input, 1A output, 60nA IQ - ultra-low IQ but incompatible with 12V+ automotive inputs. | Suitable only for single-cell Li-ion or USB-powered devices; cannot replace LT8607IMSE#PBF in 12V/24V systems. | Choose only for sub-6V battery applications where IQ <100nA is mandatory; no VIN compatibility with LT8607IMSE#PBF. |
Compared with LT8609SIMSE#PBF, LT8607IMSE#PBF offers smaller footprint and lower cost for 750mA needs; versus TPS62840DRVR, it supports full automotive voltage range but trades off nanoscale IQ for robust 42V operation and AEC-Q100 compliance.
Availability
LT8607IMSE#PBF is available at Aetrix Electronics and suitable for automotive camera modules, industrial sensor nodes, telematics control units, and portable medical diagnostics requiring stable component supply with AEC-Q100 qualification and long-term production support.
Supply support for LT8607IMSE#PBF 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.
The LT8607 product line delivers ultralow-quiescent-current synchronous buck regulators optimized for automotive and battery-critical applications where efficiency at light load, EMI control, and wide input voltage range are essential design requirements.
FAQ
What is the maximum input voltage rating for LT8607IMSE#PBF?
The LT8607IMSE#PBF 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 buses and automotive batteries with load-dump protection margin. Operation above 42V risks permanent damage per Absolute Maximum Ratings.
Does LT8607IMSE#PBF support fixed 5V output without external feedback resistors?
Yes, LT8607IMSE#PBF is the fixed 5V version of the LT8607 family. It integrates a 6.6MΩ internal feedback divider between VOUT and GND, eliminating the need for external R1/R2 resistors. The FB pin is internally connected to this divider network and is not user-accessible for adjustment.
How does the SYNC pin function on LT8607IMSE#PBF?
The SYNC pin on LT8607IMSE#PBF (MSOP package only) controls operating mode: grounded for Burst Mode, floating for pulse-skipping, tied to INTVCC for spread spectrum modulation, or driven by external clock for synchronization. It has no function in DFN variants and is absent on LT8607B.
What thermal performance can be expected from LT8607IMSE#PBF in its MSOP package?
LT8607IMSE#PBF in the 10-lead MSOP package achieves θJA = 40°C/W when the exposed thermal pad (Pin 11) is properly soldered to a minimum 1-inch² copper pour on the PCB. This enables 750mA continuous output at +85°C ambient without derating, assuming adequate airflow and board layout.
Is LT8607IMSE#PBF qualified for automotive applications?
Yes, LT8607IMSE#PBF is AEC-Q100 qualified for automotive applications with guaranteed operation from –40°C to +125°C junction temperature. It meets stress test requirements for temperature cycling, humidity, and mechanical shock, making it suitable for engine bay, cabin, and ADAS subsystems.
LT8607IMSE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LT8607IMSE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8607IMSE#PBF 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#PBF reliable?
The price and inventory of LT8607IMSE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8607IMSE#PBF is usually 5 days.
3.What payment methods are accepted for LT8607IMSE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8607IMSE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8607IMSE#PBF?
LT8607IMSE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8607IMSE#PBF 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#PBF?
For technical support, including LT8607IMSE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8607IMSE#PBF requirements.
6.How does Aetrix verify that LT8607IMSE#PBF is sourced from the original manufacturer or authorized distributors?
All LT8607IMSE#PBF 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#PBF meets industry standards.
7.What is the process for return or replacement of LT8607IMSE#PBF?
All LT8607IMSE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8607IMSE#PBF, 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#PBF part is unused and in its original packaging.
Return procedure for LT8607IMSE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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