LT3845AIFE#TRPBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT3845AIFE#TRPBF is a high-voltage synchronous current-mode step-down controller operating from 4 V to 60 V input with adjustable switching frequency and burst mode. It drives external N-channel MOSFETs for efficient DC-DC conversion in demanding power supply designs.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LT3845AIFE#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.6600(MOQ 19)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3845AIFE#TRPBF?
- Wide 4 V to 60 V input range with adjustable operating mode up to 36 V for versatile high-voltage DC-DC designs
- Synchronous current-mode control with burst mode for high efficiency at light loads in battery-powered systems
- Adjustable switching frequency reduces EMI and allows filter optimization across a broad range of output configurations
What is LT3845AIFE#TRPBF used for?
The LT3845AIFE#TRPBF is designed for high-voltage DC-DC step-down converters in industrial power supplies, automotive electronics, and distributed power architectures where input voltages span 4 V to 60 V. Its burst mode operation and synchronous gate drive support high-efficiency designs across the full load range from milliwatts to tens of watts.
What are the specifications of LT3845AIFE#TRPBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1663 (BC) |
| YTEOL | 10 |
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE UP TO 36V |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | BURST MODE |
| Input Voltage-Max | 60V |
| Input Voltage-Min | 4V |
| Input Voltage-Nom | 20V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Max | 36V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| 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 | PUSH-PULL |
| Switching Frequency-Max | 500kHz |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| 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 |
| Country of Origin | Malaysia |
Where can I find the LT3845AIFE#TRPBF datasheet?
LT3845AIFE#TRPBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3845AIFE#TRPBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LT3845AIFE#TRPBF support for step-down conversion?
The LT3845AIFE#TRPBF accepts input voltages from 4 V to 60 V, with an adjustable operating mode that extends functionality up to 36 V in certain configurations. This wide range covers automotive 12 V and 24 V rails as well as industrial 48 V bus voltages in a single controller design.
How does burst mode operation in the LT3845AIFE#TRPBF improve light-load efficiency in battery systems?
Burst mode reduces switching losses by entering a low-frequency pulse burst when output current drops below a threshold, cutting quiescent current to microamp levels. In a 48 V to 5 V converter, this can improve light-load efficiency by over 20 percentage points compared to fixed-frequency operation at loads below 100 mA.
Which external components does the LT3845AIFE#TRPBF require to build a complete synchronous buck converter?
The LT3845AIFE#TRPBF is a controller that drives 2 external N-channel MOSFETs, requiring an output inductor (typically 10 µH to 100 µH), input and output capacitors, and a current-sense resistor or DCR sensing network to complete the synchronous buck converter loop around its current-mode architecture.
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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.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $7.5000 | $142.50 |
| 250+ | $6.1500 | $1537.50 |
| 1000+ | $5.6600 | $5660.00 |
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