LTC3642EMS8E-3.3#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LTC3642EMS8E-3.3#PBF is a 4.5V to 45V input synchronous step-down DC-DC converter with 3.3V fixed output at 50mA. It features current-mode burst-mode control for high efficiency in automotive applications. Available in compact 8-pin MSOP package with exposed pad for enhanced thermal performance.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LTC3642EMS8E-3.3#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.8578(MOQ 1)
- Temp Range
- ?°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide 4.5V to 45V input voltage range for automotive and industrial supplies
- Fixed 3.3V output with 50mA continuous output current
- Current-mode burst-mode control for high light-load efficiency
- Compact 8-pin MSOP package with exposed pad for thermal management
- Automotive-grade design with AEC-Q100 qualification
Applications
The LTC3642EMS8E-3.3#PBF is designed for automotive systems requiring a regulated 3.3V supply from high-voltage rails up to 45V, such as infotainment and body control modules. Its burst-mode operation makes it ideal for always-on subsystems where quiescent current is critical, including keyless entry and fleet telematics hardware. The device also fits industrial sensor nodes and instrumentation powered from wide-range DC bus rails.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1662 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | BURST MODE |
| Input Voltage-Max | 45V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 10V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.05A |
| Output Voltage-Max | 3.34V |
| Output Voltage-Min | 3.24V |
| 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 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Technology | CMOS |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) |
| 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 is the input voltage range of the LTC3642EMS8E-3.3#PBF and how does it handle automotive load-dump transients?
The LTC3642EMS8E-3.3#PBF accepts inputs from 4.5V to 45V, comfortably covering the 40V automotive load-dump transient specified in ISO 7637. This wide range allows the regulator to operate through cold-crank events near 4.5V and high transient spikes up to 45V without external protection in most automotive designs.
How efficient is the LTC3642EMS8E-3.3#PBF at light loads, and what control technique enables this?
At light loads the LTC3642EMS8E-3.3#PBF uses burst-mode control to achieve high efficiency by reducing switching losses. In burst mode the quiescent current drops significantly, making the device suitable for always-on 3.3V rails that must sustain 50mA peak output while minimising standby power below 1mA.
Which compact PCB designs benefit from the 8-pin MSOP package of the LTC3642EMS8E-3.3#PBF?
The 8-pin MSOP with exposed pad measures roughly 3mm x 5mm, fitting tight automotive ECU and IoT sensor boards. The exposed thermal pad improves heat spreading so the 50mA output current can be sustained across the -40°C to +125°C operating temperature range without additional heatsinking in most designs.
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