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Analog Devices Inc. LT8607HMSE#TRPBF
- Part No.:
- LT8607HMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8607HMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 750MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,496
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Product details
Overview
LT8607HMSE#TRPBF 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, 2.5µA quiescent current in Burst Mode, 35ns minimum on-time, and internal compensation for fast transient response. It delivers regulated 5V output (adjustable via FB pin) in automotive and industrial power systems requiring ultralow IQ and high EMI immunity.
For engineers reviewing the LT8607HMSE#TRPBF datasheet, LT8607HMSE#TRPBF pinout, LT8607HMSE#TRPBF application, or LT8607HMSE#TRPBF equivalent, key selection criteria include its AEC-Q100 qualification, spread spectrum modulation capability, 1V EN/UV threshold accuracy, and compatibility with 200kHz–2.2MHz external synchronization - all critical for low-noise automotive subsystems and battery-powered industrial sensors.
Technical Context
The LT8607HMSE#TRPBF implements peak current mode control with internal 0.778V reference and fixed-frequency PWM architecture. Its oscillator frequency is programmable via RT resistor (200kHz–2.2MHz) or synchronized externally through the SYNC pin, enabling precise EMI management in noise-sensitive environments.
Burst Mode operation reduces input supply current to 1.7µA at no load while maintaining <10mVP-P output ripple; pulse-skipping and spread spectrum modes are selectable via SYNC pin configuration. The part integrates top/bottom NMOS switches (375mΩ/240mΩ), PG open-drain flag, TR/SS soft-start/tracking, and thermal shutdown protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports wide-range automotive battery (cold-crank to load-dump) and industrial 24V/36V rails. |
| Max Output Current | 750mA continuous - sufficient for powering microcontrollers, sensors, and interface ICs without external boost stages. |
| Quiescent Current | 2.5µA typical in Burst Mode - enables >10-year battery life in always-on IoT sensor nodes. |
| Switching Frequency | 200kHz to 2.2MHz (RT-programmable) - allows optimization of inductor size (e.g., 2.2µH at 2MHz) vs. efficiency trade-off. |
| 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 voltage accuracy; used with external resistor divider for adjustable outputs. |
| EN/UV Threshold | 1.05V rising, 50mV hysteresis - provides precise undervoltage lockout for system-level brownout protection. |
| Thermal Rating | –40°C to 150°C junction - qualified for under-hood automotive applications per AEC-Q100 Grade H. |
Pinout & Package
LT8607HMSE#TRPBF uses a 10-lead plastic MSOP package with exposed pad (Pin 11 = GND), θJA = 40°C/W. The exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.
| 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 | Power Switch Node | Connects to inductor and BST capacitor; high di/dt node requiring minimized PCB loop area for EMI control. |
| INTVCC | Internal 3.5V Regulator Bypass | Supplies internal logic/drivers; bypass with ≥1µF low-ESR ceramic to GND; no external loading permitted. |
| RT | Oscillator Frequency Set | Resistor to GND programs switching frequency (200kHz–2.2MHz); determines inductor/capacitor sizing. |
| SYNC | External Clock Interface | Selects Burst Mode (GND), pulse-skipping (float), or spread spectrum (3.2–5V); absent in DFN variants. |
| EN/UV | Enable / Input UVLO | 1.05V threshold enables startup; external resistor divider sets custom VIN cutoff (e.g., 6V for 12V battery systems). |
| VIN | Main Power Input | Supplies internal circuitry and top switch; requires local high-frequency ceramic bypass (e.g., 10µF X7R) near pin. |
| PG | Power Good Flag | Open-drain output asserts low when FB is within ±8.5% of regulation; used for system sequencing and fault detection. |
| TR/SS | Soft-Start / Tracking | Capacitor-based ramp control (2µA internal current source); enables controlled startup and output voltage tracking. |
| FB | Feedback Input | Regulated to 0.778V; connects to resistor divider tap for adjustable output; 20nA input bias minimizes load error. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow Quiescent Current | 1.7µA in Burst Mode enables multi-year operation from coin-cell batteries in remote sensors. |
| Spread Spectrum Modulation | Reduces peak radiated EMI by spreading switching energy across 0.5–6kHz band - meets CISPR 25 Class 5 limits. |
| Fast Minimum On-Time | 35ns supports high step-down ratios (e.g., 42V→3.3V at 2MHz) without frequency foldback or instability. |
| Internal Compensation | Eliminates external compensation components; simplifies design and improves stability across temperature and load. |
| AEC-Q100 Qualified | Grade H (–40°C to +150°C) ensures reliability in automotive engine control, ADAS cameras, and infotainment power rails. |
| Low Dropout Operation | Maintains regulation down to VIN – VOUT ≈ 0.5V due to synchronous rectification and low RDS(on) switches. |
Applications
| Automotive Camera Power Supply | Industrial Sensor Node |
|---|---|
Use Scenario: Powers 3.3V image sensor and ISP in rear-view camera module exposed to under-hood temperatures up to 125°C ambient. IC Role / Device Role / Timing Role: Primary 42V-input synchronous buck regulator delivering stable 3.3V/500mA with Burst Mode for parking-mode standby. Use Value: 2.5µA IQ extends battery backup runtime during ignition-off; spread spectrum meets OEM EMI requirements without added filters. | Use Scenario: Powers LoRaWAN node with MCU, RF transceiver, and environmental sensors in sealed outdoor enclosure. IC Role / Device Role / Timing Role: Main system regulator converting 36V industrial rail to 3.3V; operates in Burst Mode during sleep cycles. Use Value: 750mA capability supports burst transmit current; 150°C junction rating ensures reliability in unventilated enclosures. |
| ADAS Radar Module Bias Supply | Medical Portable Monitor |
Use Scenario: Supplies clean 5V bias to 77GHz radar transceiver ASIC in front-end module with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise synchronous buck with SYNC-driven spread spectrum to suppress narrowband emissions near IF frequencies. Use Value: <10mVP-P ripple and CISPR 25-compliant radiated emission enable single-layer EMI filter design. | Use Scenario: Powers clinical-grade patient monitor with display, ADC, and Bluetooth LE during 72-hour battery operation. IC Role / Device Role / Timing Role: High-efficiency 12V-to-3.3V converter with TR/SS-controlled soft-start to prevent inrush into capacitive loads. Use Value: 93% efficiency at 500mA extends battery life; AEC-Q100 qualification validates long-term reliability for medical use. |
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#TRPBF | Higher 2A output, same 42V input, integrated spread spectrum, but 3µA IQ (vs. 2.5µA) and larger 12-lead MSOP package. | Required where >750mA load current or tighter output tolerance (±1%) is needed; not drop-in due to pin count and layout change. | Select when higher current headroom or improved load regulation is prioritized over minimal IQ and footprint. |
| MPQ4420AGL-A-Z | 45V input, 2A output, 17µA IQ in forced PWM, no spread spectrum, QFN-10 package, non-AEC-Q100. | Suitable for cost-sensitive industrial applications without automotive qualification or stringent EMI requirements. | Choose for non-automotive designs where lower BOM cost outweighs IQ, EMI performance, and temperature rating needs. |
Compared with LT8609SJMSE#TRPBF and MPQ4420AGL-A-Z, LT8607HMSE#TRPBF uniquely balances ultralow IQ (2.5µA), AEC-Q100 Grade H qualification, and integrated spread spectrum in a compact MSOP - making it optimal for space-constrained, battery-backed automotive and industrial edge nodes.
Availability
LT8607HMSE#TRPBF is available at Aetrix Electronics and suitable for automotive camera modules, industrial sensor networks, ADAS radar supplies, and portable medical monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8607HMSE#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 product line delivers ultralow-quiescent-current synchronous buck regulators optimized for automotive and battery-powered systems where efficiency, EMI control, and high-temperature reliability are critical design constraints.
FAQ
What is the maximum junction temperature rating for LT8607HMSE#TRPBF?
The LT8607HMSE#TRPBF is rated for –40°C to +150°C junction temperature and is AEC-Q100 qualified for automotive Grade H applications. This specification is confirmed in the Absolute Maximum Ratings table and supported by thermal characterization data showing θJA = 40°C/W with proper PCB copper pour on the exposed pad.
Does LT8607HMSE#TRPBF support adjustable output voltage?
Yes, LT8607HMSE#TRPBF supports adjustable output voltage via the FB pin, which is regulated to 0.778V. An external resistor divider between VOUT and FB sets the output (e.g., 3.3V, 2.5V). The LT8607-5 variant has fixed 5V output, but LT8607HMSE#TRPBF is the adjustable version with full FB functionality.
How does the SYNC pin function on LT8607HMSE#TRPBF?
The SYNC pin on LT8607HMSE#TRPBF selects operating mode: grounded for Burst Mode (lowest IQ), floating for pulse-skipping, or tied to 3.2–5V for spread spectrum modulation. It is present only on MSOP packages like LT8607HMSE#TRPBF - DFN variants omit this pin and have fixed internal mode selection.
What is the minimum inductor value recommended for LT8607HMSE#TRPBF at 2MHz?
For 2MHz operation, a 2.2µH inductor is recommended (as validated in Figure G03/G04 of the datasheet). Using 2.2µH maintains >90% efficiency at 500mA with 12V input and 5V output, while minimizing size. Inductor saturation current must exceed 1.2A to accommodate peak switch current limits.
Is LT8607HMSE#TRPBF pin-compatible with other LT8607 variants?
Yes, LT8607HMSE#TRPBF shares identical 10-lead MSOP pinout with all LT8607MSE variants (e.g., LT8607EMSE#TRPBF, LT8607IMSE#TRPBF). Differences are limited to temperature grade and tape-and-reel packaging; electrical functionality, pin mapping, and PCB footprint are fully compatible.
LT8607HMSE#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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
LT8607HMSE#TRPBF FAQ
1.How can I place an order for LT8607HMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8607HMSE#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 LT8607HMSE#TRPBF reliable?
The price and inventory of LT8607HMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8607HMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8607HMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8607HMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8607HMSE#TRPBF?
LT8607HMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8607HMSE#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 LT8607HMSE#TRPBF?
For technical support, including LT8607HMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8607HMSE#TRPBF requirements.
6.How does Aetrix verify that LT8607HMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8607HMSE#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 LT8607HMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8607HMSE#TRPBF?
All LT8607HMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8607HMSE#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 LT8607HMSE#TRPBF part is unused and in its original packaging.
Return procedure for LT8607HMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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