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Analog Devices Inc. LT8607HMSE#PBF
- Part No.:
- LT8607HMSE#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8607HMSE#PBF.pdf
- Description:
- IC REG BUCK ADJ 750MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,219
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Product details
Overview
LT8607HMSE#PBF from Analog Devices is a 42V, 750mA synchronous step-down regulator in thermally enhanced 10-lead MSOP package with –40°C to 150°C junction temperature rating. It delivers regulated output with 2.5µA quiescent current in Burst Mode, 35ns minimum on-time, and internal compensation for fast transient response - used in automotive infotainment power rails where low EMI and high temperature reliability are critical.
For engineers reviewing the LT8607HMSE#PBF datasheet, LT8607HMSE#PBF pinout, LT8607HMSE#PBF application, or LT8607HMSE#PBF equivalent, key selection factors include its AEC-Q100 qualification, programmable 200kHz–2.2MHz switching frequency via RT resistor, SYNC pin for external clock synchronization or spread spectrum modulation, and EN/UV pin with accurate 1V threshold for VIN undervoltage lockout.
Technical Context
The LT8607HMSE#PBF implements peak current mode control with internal 0.778V feedback reference and fixed 35ns minimum on-time, enabling stable operation at high input-to-output voltage ratios. Its integrated top/bottom NMOS switches (375mΩ/240mΩ) support up to 750mA continuous output with thermal shutdown and overcurrent protection.
Burst Mode operation reduces no-load input current to 1.7µA while maintaining <10mVP-P output ripple; the MSOP package includes dedicated SYNC and TR/SS pins for external clock synchronization, soft-start programming, and output voltage tracking - features absent in DFN variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports wide automotive battery transients including cold-crank (4.5V) and load-dump (40V). |
| Output Current | 750mA continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in compact modules. |
| Quiescent Current | 2.5µA in Burst Mode - enables >10-year battery life in always-on automotive subsystems. |
| Switching Frequency | 200kHz to 2.2MHz (RT-programmable) - allows optimization of inductor size vs. efficiency across 12V/24V systems. |
| Minimum On-Time | 35ns - enables high step-down ratios (e.g., 42V→3.3V) without pulse-skipping instability. |
| Feedback Reference | 0.778V ±12mV - sets output accuracy; used with external resistor divider for adjustable outputs. |
| EN/UV Threshold | 1.05V rising, 1.00V falling - provides precise, hysteresis-enabled undervoltage lockout for system-level brownout protection. |
Pinout & Package
LT8607HMSE#PBF uses a 10-lead plastic MSOP package with exposed pad (Pin 11) soldered to PCB ground for thermal management (θJA = 40°C/W). The package includes SYNC and TR/SS pins for advanced timing control - distinguishing it from DFN variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply | Drives top NMOS gate above VIN; requires 0.1µF ceramic capacitor to SW for proper high-side switching. |
| SW | Switch node | Connects to inductor and BST capacitor; must be minimized on PCB to reduce EMI and switching losses. |
| INTVCC | Internal 3.5V regulator bypass | Supplies internal logic/drivers; requires ≥1µF low-ESR ceramic capacitor to GND; no external loading permitted. |
| RT | Frequency setting | Resistor to GND programs switching frequency from 200kHz to 2.2MHz; determines inductor/capacitor sizing trade-offs. |
| SYNC | External clock interface | Ground for Burst Mode; float for pulse-skipping; tie to INTVCC for spread spectrum - reduces radiated EMI in CISPR 25 Class 5 tests. |
| EN/UV | Enable/undervoltage lockout | 1.05V threshold enables regulation; external resistor divider sets custom VIN UVLO point for automotive battery monitoring. |
| TR/SS | Soft-start/tracking | 2µA internal current source charges external capacitor to control output ramp rate; enables power sequencing with other rails. |
| FB | Feedback input | Regulated to 0.778V; connects to resistor divider tap for adjustable output voltage configuration. |
| PG | Power good indicator | Open-drain output asserts low when FB is within ±8.5% of target - signals MCU when output is stable and fault-free. |
| GND | Ground reference | Exposed pad (Pin 11) must be soldered to PCB ground plane to achieve specified thermal resistance and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade H qualification | Rated for –40°C to +150°C junction temperature - validated for under-hood automotive applications including engine control modules. |
| Ultralow IQ Burst Mode | 1.7µA non-switching quiescent current enables always-on functionality in telematics and ADAS sensors without draining vehicle battery. |
| Spread spectrum modulation | Reduces peak radiated EMI by >10dB in CISPR 25 testing - eliminates need for external EMI filters in space-constrained infotainment head units. |
| Internal compensation | Eliminates external compensation components; enables stable operation with 2.2µH–4.7µH inductors and standard ceramic output capacitors. |
| Accurate 1V enable threshold | ±50mV tolerance ensures predictable startup behavior across temperature and supply variations - simplifies system-level power sequencing design. |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
Use Scenario: Powers SoC, display driver, and audio codec in head unit with 12V battery input subject to load dump and cold crank. IC Role / Device Role / Timing Role: Primary 3.3V/5V buck converter providing regulated, low-noise, low-EMI power with thermal robustness. Use Value: AEC-Q100 Grade H rating ensures operation at 150°C junction temperature; 35ns min on-time maintains regulation during 42V transients. | Use Scenario: Supplies image sensor and ISP in rear-view camera module mounted near exhaust or engine bay. IC Role / Device Role / Timing Role: High-efficiency, ultralow-IQ step-down regulator delivering stable 1.8V/2.8V rails during vehicle sleep mode. Use Value: 2.5µA quiescent current extends battery backup runtime; spread spectrum reduces EMI interference with video signal integrity. |
| Industrial IoT Sensor Node | Telematics Control Unit (TCU) |
Use Scenario: Powers wireless MCU, RF transceiver, and environmental sensors in battery-operated remote monitoring device. IC Role / Device Role / Timing Role: Primary DC/DC converter enabling multi-year battery life via Burst Mode and precise enable control. Use Value: 1.7µA non-switching IQ minimizes standby drain; EN/UV pin allows wake-on-voltage detection from external sensors. | Use Scenario: Generates 3.3V rail for cellular modem, GNSS receiver, and CAN controller in vehicle connectivity gateway. IC Role / Device Role / Timing Role: Synchronous buck regulator with PG output for system-level power-good signaling and fault reporting. Use Value: PG pin asserts low if output deviates >±8.5%, enabling firmware-initiated safe shutdown before data corruption occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8609SJMSE#PBF | Higher 2A output current; same 42V input, 35ns min on-time, and AEC-Q100 Grade H rating; adds integrated MOSFET drivers for external high-side switch. | Required when >750mA load current or need for external FET control in high-power ADAS ECUs. | Select LT8609SJMSE#PBF only if output current exceeds 750mA or dual-phase operation is needed. |
| MPQ4420AGL-AEC1-Z | 2A output, 36V max input, 17µA IQ in skip mode; no SYNC or TR/SS pins; fixed 2.2MHz switching frequency; QFN-10 package. | Suitable for cost-sensitive, lower-temperature automotive applications where spread spectrum and soft-start are not required. | Choose MPQ4420AGL-AEC1-Z when EMI filtering is handled externally and thermal margin is >25°C below 150°C. |
Compared with LT8607HMSE#PBF, LT8609SJMSE#PBF offers higher current capacity and driver flexibility but larger footprint, while MPQ4420AGL-AEC1-Z trades advanced timing features for lower BOM cost and simpler layout - making LT8607HMSE#PBF optimal for space-constrained, thermally demanding, low-IQ automotive subsystems.
Availability
LT8607HMSE#PBF is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and industrial IoT sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8607HMSE#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 automotive, industrial, communications, and healthcare markets.
The LT8607 product line delivers high-efficiency, ultralow-quiescent-current synchronous buck regulators optimized for automotive and harsh-environment applications where reliability, EMI performance, and thermal resilience are critical.
FAQ
What is the maximum junction temperature rating for LT8607HMSE#PBF?
The LT8607HMSE#PBF is rated for –40°C to +150°C operating junction temperature and is AEC-Q100 qualified as Grade H. This specification is confirmed in the Absolute Maximum Ratings table and verified across production lots per Analog Devices' automotive reliability testing protocol. The LT8607HMSE#PBF achieves this rating via enhanced packaging and internal thermal protection circuitry that activates above 150°C.
Does LT8607HMSE#PBF support external frequency synchronization?
Yes, LT8607HMSE#PBF supports external frequency synchronization via its dedicated SYNC pin (Pin 7), which accepts TTL/CMOS-compatible clock inputs up to 2.2MHz. When driven by an external clock, the LT8607HMSE#PBF aligns its switching edges to the input signal and operates in pulse-skipping mode - a capability exclusive to the MSOP package and not available in DFN variants.
How does the EN/UV pin function on LT8607HMSE#PBF?
The EN/UV pin on LT8607HMSE#PBF has an accurate 1.05V rising threshold and 1.00V falling hysteresis, enabling precise undervoltage lockout or controlled shutdown. When pulled below 1.00V, the LT8607HMSE#PBF shuts down and draws only 1µA input current. An external resistor divider from VIN allows programmable UVLO points - e.g., 6.5V for automotive cold-crank detection.
What output voltage options are available for LT8607HMSE#PBF?
The LT8607HMSE#PBF is an adjustable-output variant that regulates the FB pin to 0.778V; output voltage is set externally using a resistor divider. It is not offered in fixed-output versions - those use distinct part numbers (e.g., LT8607-5MSE#PBF for 5V). No internal feedback divider is present in LT8607HMSE#PBF, requiring external R1/R2 for all configurations.
Can LT8607HMSE#PBF operate with a 2.2µH inductor?
Yes, LT8607HMSE#PBF is validated to operate with 2.2µH inductors at 2MHz switching frequency, as shown in Figure G03 and G04 of the datasheet. Using 2.2µH instead of 4.7µH reduces solution size and cost while maintaining >90% efficiency at 500mA load with 12VIN→5VOUT - provided the inductor's saturation current exceeds 1.2A and DC resistance is ≤80mΩ.
LT8607HMSE#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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
LT8607HMSE#PBF FAQ
1.How can I place an order for LT8607HMSE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8607HMSE#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 LT8607HMSE#PBF reliable?
The price and inventory of LT8607HMSE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8607HMSE#PBF is usually 5 days.
3.What payment methods are accepted for LT8607HMSE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8607HMSE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8607HMSE#PBF?
LT8607HMSE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8607HMSE#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 LT8607HMSE#PBF?
For technical support, including LT8607HMSE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8607HMSE#PBF requirements.
6.How does Aetrix verify that LT8607HMSE#PBF is sourced from the original manufacturer or authorized distributors?
All LT8607HMSE#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 LT8607HMSE#PBF meets industry standards.
7.What is the process for return or replacement of LT8607HMSE#PBF?
All LT8607HMSE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8607HMSE#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 LT8607HMSE#PBF part is unused and in its original packaging.
Return procedure for LT8607HMSE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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