LT8609AEMSE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT8609AEMSE#PBF is a synchronous step-down DC-DC regulator with 3V to 42V input range and 2A output current. Switching frequency reaches 2.2 MHz with adjustable output from 800mV to 41.5V. Available in compact MSOP-10 package for industrial and automotive power supplies.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LT8609AEMSE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.3077(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
- Wide 3 V to 42 V input range with 2 A continuous output current in a compact MSOP-10 footprint
- 2.2 MHz switching frequency enabling small external inductors and capacitors to minimize solution size
- Current-mode PWM control with adjustable 800 mV to 41.5 V output covering a broad range of rail voltages
Applications
The LT8609AEMSE#PBF is designed for automotive, industrial, and telecom power supplies that must regulate from high-voltage inputs down to sub-1V logic rails. Its 3V to 42V input range handles 12V, 24V, and 48V bus voltages while delivering up to 2A, making it suitable for distributed power architectures in factory automation and vehicle body electronics. The 2.2 MHz switching frequency reduces EMI filter size and allows use of low-profile inductors in space-constrained PCB designs.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1664 |
| YTEOL | 9 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 42V |
| Input Voltage-Min | 3V |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 3A |
| Output Voltage-Max | 42V |
| Output Voltage-Min | 0.782V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP10,.19,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2075kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| 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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LT8609AEMSE#PBF support, and what output current can it supply?
The LT8609AEMSE#PBF accepts an input voltage from 3 V to 42 V and delivers up to 2 A continuous output current. The adjustable output spans 800 mV to 41.5 V, allowing a single device to serve 1.8 V, 3.3 V, and 5 V rails from a 12 V or 24 V bus in industrial power designs.
Why does the 2.2 MHz switching frequency of the LT8609AEMSE matter for PCB layout?
At 2.2 MHz the required inductance is typically 2.2 µH to 4.7 µH versus 10 µH to 47 µH at lower frequencies, shrinking inductor footprint and height. Smaller passive components reduce total solution area on the PCB and ease thermal management in dense multi-rail power supplies for automotive and IoT modules.
Which control architecture does the LT8609AEMSE use, and how does it affect transient response?
The device uses current-mode pulse-width modulation control, which provides inherent cycle-by-cycle current limiting and fast load transient response. A 1 A load step at a 3.3 V output typically shows recovery within a few microseconds, maintaining tight voltage regulation in dynamic loads such as FPGA core rails and DSP power supplies.
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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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