LT3663IMS8E-3.3#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT3663IMS8E-3.3#PBF is a fixed 3.3 V output, 1.2 A step-down DC-DC converter accepting 7.5 V to 36 V input, housed in an 8-pin MSOP EP package with automotive qualification. It uses constant-frequency current-mode control for stable, low-noise regulation suitable for 12 V and 24 V automotive rails. Available in tube packaging from global authorized distributors for prototype and production builds.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT3663IMS8E-3.3#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.2200(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 7.5 V to 36 V input range covers 12 V and 24 V automotive bus voltages in a single fixed 3.3 V solution
- 1.2 A continuous output current in compact 8-pin MSOP EP enables space-efficient automotive ECU power rails
- Constant-frequency current-mode control provides fast load transient response and stable loop compensation
Applications
LT3663IMS8E-3.3#PBF is designed for automotive ECU, body control module, and ADAS sensor power supplies requiring a regulated 3.3 V rail from 12 V or 24 V vehicle battery inputs. Its wide 7.5 V to 36 V input range accommodates load dump transients and cold-crank voltage dips common in automotive electrical systems. The MSOP EP package enables dense PCB layouts in space-constrained automotive modules while providing adequate thermal dissipation through the exposed pad.
Specifications
| 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 |
| Output Voltage-Max | 3.366V |
| Output Voltage-Min | 3.234V |
| Output Voltage-Nom | 3.3V |
| 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 | 1100kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does LT3663IMS8E-3.3#PBF support for automotive 12 V and 24 V systems?
LT3663IMS8E-3.3#PBF accepts input voltages from 7.5 V to 36 V, covering standard 12 V automotive batteries with load dump spikes up to 36 V and cold-crank dips as low as 7.5 V. This wide range also accommodates 24 V commercial vehicle bus systems, making the part suitable across both passenger car and light-commercial vehicle ECU power supply designs.
How does the current-mode control architecture of LT3663IMS8E-3.3#PBF benefit automotive power supply designs?
LT3663IMS8E-3.3#PBF uses constant-frequency current-mode control, which provides inherent cycle-by-cycle current limiting for short-circuit protection and fast load transient response. The current-mode loop simplifies output inductor selection and allows the 3.3 V / 1.2 A output to recover within a few microseconds from load steps, keeping sensitive microcontroller supply voltages stable during sudden current demand changes in automotive ECUs.
What thermal management does the 8-pin MSOP EP package of LT3663IMS8E-3.3#PBF offer for 1.2 A output operation?
The 8-pin MSOP EP (exposed pad) package of LT3663IMS8E-3.3#PBF provides a bottom-side thermal pad that conducts heat directly to the PCB ground plane through multiple thermal vias. At 1.2 A output and 3.3 V output from a 12 V input, power dissipation in the IC is approximately 160 mW to 300 mW depending on efficiency, which the exposed pad can handle without a heatsink in typical automotive PCB layouts with adequate copper pour.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
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.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.9200 | $5.92 |
| 19+ | $5.5900 | $106.21 |
| 100+ | $5.0126 | $501.26 |
| 1000+ | $4.2200 | $4220.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”