LT3663EMS8E#TRPBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT3663EMS8E#TRPBF is an automotive-grade synchronous step-down DC-DC converter accepting 7.5V to 36V input, delivering regulated outputs down to 0.8V at 1.2A with constant-frequency current-mode control, in an 8-pin MSOP with exposed pad.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT3663EMS8E#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.6100(MOQ 1)
- Temp Range
- ?°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3663EMS8E#TRPBF?
- Wide 7.5V to 36V input range with 36V absolute maximum covers 12V and 24V automotive supply rails including load dump transients
- 1.2A continuous output current with output voltage adjustable down to 0.8V for powering low-voltage processors and FPGAs
- Constant-frequency current-mode control ensures predictable EMI spectrum and stable loop response across load variations
- Compact 8-pin MSOP with exposed pad provides efficient thermal dissipation in space-constrained automotive PCB layouts
What is LT3663EMS8E#TRPBF used for?
The LT3663EMS8E#TRPBF is designed for automotive point-of-load power supplies in infotainment head units, advanced driver assistance system (ADAS) boards, and body control modules where a regulated sub-1V or 1V to 3.3V rail is needed from the 12V or 24V vehicle battery. Its 36V input tolerance handles automotive load dump transients without external clamping components, reducing system cost. The device is also suitable for industrial 24V panel instruments, ruggedized data acquisition modules, and transportation systems requiring a compact, efficient step-down regulator with wide input margin.
What are the specifications of LT3663EMS8E#TRPBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1662 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | CONSTANT FREQUENCY |
| Input Voltage-Max | 36V |
| Input Voltage-Min | 7.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 2.5A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 3.2mA |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1650kHz |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT3663EMS8E#TRPBF datasheet?
LT3663EMS8E#TRPBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3663EMS8E#TRPBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the LT3663EMS8E#TRPBF handle automotive load dump transients on a 12V vehicle battery rail?
The LT3663EMS8E#TRPBF accepts input voltages up to 36V continuously, which covers the peak transient voltages of 26V to 36V that occur during automotive load dump events on a 12V battery system. This built-in margin eliminates the need for external TVS diodes or clamp circuits on the input rail, simplifying the BOM and improving system reliability in automotive body control and infotainment applications.
What output voltage range can the LT3663EMS8E#TRPBF regulate to, and how is the output voltage set?
The LT3663EMS8E#TRPBF can regulate output voltages down to 0.8V, which is the internal reference voltage. The output is set by an external resistor divider from VOUT to the feedback pin to GND. This allows designers to program any output voltage from 0.8V up to the input range for applications including 1.0V processor core rails, 1.8V memory supplies, and 3.3V I/O rails from a single converter topology.
What switching frequency does the LT3663EMS8E#TRPBF use and how does constant-frequency operation benefit EMI compliance?
The LT3663EMS8E#TRPBF operates at a fixed constant frequency, which concentrates switching harmonics at known, predictable spectral locations. This makes it significantly easier to design EMI filters and pass CISPR 25 automotive electromagnetic compatibility tests compared to variable-frequency converters whose harmonics spread unpredictably. A fixed frequency also simplifies inductor selection and output capacitor sizing for consistent filter performance across the full load range from 0 mA to 1.2 A.
When would the LT3663EMS8E be preferred over a lower-voltage step-down converter for an automotive ADAS sub-board?
An ADAS sub-board typically receives power directly from the 12V vehicle battery, which can exceed 16V during alternator regulation or reach 26V during load dump. The LT3663EMS8E's 36V input rating handles this range without an upstream pre-regulator, reducing converter stages from 2 to 1 and cutting total power losses in the supply chain by eliminating an intermediate 5V or 8V conversion step. This results in a smaller, cooler, and more reliable power supply for the ADAS processing hardware.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.0300 | $5.03 |
| 19+ | $4.7800 | $90.82 |
| 1000+ | $3.6100 | $3610.00 |
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