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Analog Devices Inc. LT8607EMSE#TRPBF
- Part No.:
- LT8607EMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8607EMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 750MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
LT8607EMSE#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) and supports synchronization to external clocks up to 2.2MHz for low-EMI automotive power systems.
For engineers reviewing the LT8607EMSE#TRPBF datasheet, LT8607EMSE#TRPBF pinout, LT8607EMSE#TRPBF application, or LT8607EMSE#TRPBF equivalent, key selection criteria include ultralow IQ at light load, AEC-Q100 qualification, spread-spectrum EMI reduction, and precise 1V EN/UV threshold with hysteresis for reliable VIN undervoltage lockout.
Technical Context
The LT8607EMSE#TRPBF implements peak current mode control with internal 0.778V reference and fixed-frequency PWM architecture programmable from 200kHz to 2.2MHz via RT resistor. Its 35ns minimum on-time enables high VIN/VOUT ratios (e.g., 42V→5V) without pulse-skipping instability.
Burst Mode operation reduces no-load input current to 3.0µA while maintaining <10mVP-P ripple; SYNC pin enables selectable modes-grounded for Burst Mode, floating for pulse-skipping, or biased to INTVCC for spread-spectrum modulation-making it suitable for always-on automotive ECUs and battery-powered industrial sensors.
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, CAN transceivers, and sensor signal chains |
| Quiescent Current | 2.5µA in Burst Mode - enables >10-year battery life in always-on IoT nodes with 100mAh coin cells |
| Switching Frequency | 200kHz to 2.2MHz - adjustable via RT resistor; 2MHz operation allows use of 2.2µH inductors for compact layouts |
| Feedback Reference | 0.778V ±12mV - tight tolerance enables ±1% output accuracy with 1% FB resistors |
| EN/UV Threshold | 1.05V rising, 1.00V falling - 50mV hysteresis prevents oscillation during slow-ramping VIN |
| Minimum On-Time | 35ns - supports 42V→5V conversion at 2MHz without duty-cycle limitation |
| Thermal Range | –40°C to 125°C junction - qualified for under-hood automotive applications per AEC-Q100 Grade E |
Pinout & Package
LT8607EMSE#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 and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply | Drives top MOSFET gate above VIN; requires 0.1µF ceramic capacitor placed adjacent to IC |
| SW | Power switch node | Connects to inductor and BST capacitor; must be minimized in PCB area to reduce EMI and switching losses |
| INTVCC | Internal 3.5V regulator bypass | Supplies internal logic/drivers; decoupled with ≥1µF low-ESR ceramic to GND |
| RT | Frequency programming | Resistor to GND sets fSW from 200kHz–2.2MHz; determines inductor size and efficiency trade-off |
| SYNC | Mode control & sync input | Ground = Burst Mode; float = pulse-skipping; INTVCC = spread-spectrum; absent on DFN variants |
| EN/UV | Enable / UVLO input | 1.05V threshold enables startup; external divider programs custom VIN cutoff (e.g., 5.5V) |
| PG | Power good open-drain | Pulls low when VOUT is within ±8.5% of regulation; requires external pull-up for MCU reset signaling |
| TR/SS | Soft-start & tracking | Capacitor here controls VOUT ramp rate; also enables output voltage tracking in multi-rail systems |
| FB | Feedback input | Regulated to 0.778V; connects to resistor divider for adjustable outputs (not used in LT8607-5 variant) |
| GND | Power & signal ground | Exposed pad (Pin 11) is GND and must be soldered to PCB thermal plane for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 2.5µA quiescent current maintains regulation at microamp loads-critical for automotive standby systems |
| Synchronous rectification | Integrated top/bottom NMOS switches eliminate external diode, enabling >93% efficiency at 500mA (12VIN→5VOUT) |
| Spread-spectrum modulation | Reduces peak radiated EMI by >10dB in CISPR 25 Class 5 tests-enables cleaner layout without added filters |
| AEC-Q100 Grade E | Qualified from –40°C to +125°C junction temperature-meets automotive reliability requirements for body electronics |
| Fast minimum on-time | 35ns enables single-stage 42V→5V conversion at 2MHz, avoiding cascaded regulators and saving board space |
| Internal compensation | Eliminates external compensation network-reduces BOM count and design iteration time for robust loop stability |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Node Power |
|---|---|
Use Scenario: Powering LIN transceivers, door lock actuators, and ambient light sensors in 12V vehicle electrical systems with cold-crank and load-dump survivability. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering stable rail during battery transients; PG signal synchronizes MCU wake-up after valid VOUT. Use Value: 2.5µA IQ extends battery backup runtime during ignition-off; 42V rating eliminates need for upstream TVS clamping. | Use Scenario: Supplying ultra-low-power wireless sensor nodes (e.g., NB-IoT, LoRaWAN) operating from primary lithium thionyl chloride (LiSOCl₂) cells. IC Role / Device Role / Timing Role: Always-on step-down converter regulating 3.6V nominal cell to 3.3V system rail with minimal self-discharge. Use Value: 3.0µA no-load current enables >15-year operational life from 2.4Ah LiSOCl₂ cell; Burst Mode preserves signal integrity during RF transmission bursts. |
| Medical Portable Diagnostic Device | Automotive ADAS Camera Module |
Use Scenario: Powering CMOS image sensors, ADCs, and ARM Cortex-M microcontrollers in handheld ultrasound or glucose monitors with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise 3.3V supply with spread-spectrum clocking to avoid interference with sensitive analog front-ends. Use Value: Radiated EMI reduced below CISPR 25 Class 5 peak limits without ferrite beads or shielding cans-lowering system cost and weight. | Use Scenario: Providing clean 1.8V and 3.3V rails for image signal processors and MIPI CSI-2 serializers in rear-view or surround-view camera ECUs. IC Role / Device Role / Timing Role: Secondary buck stage following a 12V→5V pre-regulator; TR/SS pin enables synchronized soft-start with main SoC power sequence. Use Value: 35ns min-on-time supports 5V→1.8V conversion at 2MHz, minimizing inductor footprint in space-constrained camera housings. |
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 |
|---|---|---|---|
| LT8609EMSE#TRPBF | Same 10-lead MSOP package, 2A output, higher IQ (3.5µA), identical 35ns min-on-time and Burst Mode architecture | Supports higher current loads (e.g., dual-core MCUs); same PCB footprint enables easy upgrade path | Select when system load exceeds 750mA but board space and thermal constraints prevent larger packages |
| TPS62840DRVR | 2.5V–6V input, 1A output, 100nA IQ in shutdown, 600nA in LP mode-lower IQ but narrower VIN range | Optimized for single-cell Li-ion (3.0–4.2V) portable devices-not suitable for automotive 12V/24V or industrial 24–48V inputs | Choose only for battery-powered consumer electronics where input never exceeds 6V and sub-µA shutdown is mandatory |
Compared with LT8609EMSE#TRPBF and TPS62840DRVR, the LT8607EMSE#TRPBF uniquely balances 42V input capability, 750mA output, and 2.5µA Burst Mode IQ in a compact MSOP-making it the optimal choice for automotive and industrial 12–42V systems requiring long-term reliability and EMI compliance without overdesign.
Availability
LT8607EMSE#TRPBF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, medical portable diagnostics, and ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8607EMSE#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, and automotive markets since 1965.
The LT8607 product line delivers ultralow-quiescent-current synchronous buck regulators optimized for always-on automotive and battery-critical applications-designed to replace discrete solutions with monolithic reliability and AEC-Q100 compliance.
FAQ
What is the guaranteed operating junction temperature range for LT8607EMSE#TRPBF?
The LT8607EMSE#TRPBF is specified for –40°C to 125°C junction temperature and is AEC-Q100 qualified for automotive Grade E applications. Its 10-lead MSOP package with exposed thermal pad achieves θJA = 40°C/W, enabling reliable operation in under-hood environments when properly mounted to a thermal plane. Derating applies above 125°C per Analog Devices' reliability guidelines.
Does LT8607EMSE#TRPBF support fixed 5V output without external feedback resistors?
Yes, the LT8607EMSE#TRPBF is the adjustable version; however, the pin-compatible LT8607-5MSE#TRPBF provides fixed 5V output using an internal 6.6MΩ resistor divider. The LT8607EMSE#TRPBF requires external R1/R2 feedback resistors to set VOUT, with R1 = R2 × (VOUT/0.778V − 1). For 5V output, typical values are R2 = 12.1kΩ and R1 = 64.9kΩ (1% tolerance).
How does the SYNC pin function on LT8607EMSE#TRPBF, and what are its valid states?
The SYNC pin on LT8607EMSE#TRPBF selects operating mode: grounded (≤0.4V) enables low-ripple Burst Mode; left floating (high-impedance) enables pulse-skipping; tied to INTVCC (3.2–5.0V) enables spread-spectrum modulation. Applying an external clock (200kHz–2.2MHz) synchronizes switching. This pin is absent on DFN variants-LT8607EDC#TRPBF defaults to Burst Mode, LT8607BEDC#TRPBF to pulse-skipping.
What is the minimum inductor value recommended for LT8607EMSE#TRPBF at 2MHz switching frequency?
For 2MHz operation, Analog Devices recommends a 2.2µH shielded power inductor (e.g., Coilcraft XFL4020-222ME) with saturation current ≥1.2A. At 12VIN→5VOUT, this yields ~350mA peak inductor current and maintains CCM down to ~150mA load. Smaller inductors increase ripple and risk subharmonic oscillation; larger values improve light-load efficiency but reduce transient response speed.
Can LT8607EMSE#TRPBF be used in designs requiring power-good sequencing with other regulators?
Yes, the open-drain PG pin on LT8607EMSE#TRPBF asserts low when VOUT reaches ±8.5% of target and remains stable, making it ideal for daisy-chained power sequencing. Connect PG to the EN pin of downstream regulators (with pull-up) to ensure proper turn-on order. For reverse sequencing, use PG to drive a logic-level MOSFET that disables earlier-stage supplies. No external timing components are needed-the PG delay is inherent to regulation settling.
LT8607EMSE#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
LT8607EMSE#TRPBF FAQ
1.How can I place an order for LT8607EMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8607EMSE#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 LT8607EMSE#TRPBF reliable?
The price and inventory of LT8607EMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8607EMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8607EMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8607EMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8607EMSE#TRPBF?
LT8607EMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8607EMSE#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 LT8607EMSE#TRPBF?
For technical support, including LT8607EMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8607EMSE#TRPBF requirements.
6.How does Aetrix verify that LT8607EMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8607EMSE#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 LT8607EMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8607EMSE#TRPBF?
All LT8607EMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8607EMSE#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 LT8607EMSE#TRPBF part is unused and in its original packaging.
Return procedure for LT8607EMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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