LT3845AIFE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LT3845AIFE#PBF is a high-voltage synchronous current-mode step-down controller supporting 4 V to 60 V input. Features adjustable operating frequency, burst mode for light-load efficiency, and drives external N-channel MOSFETs. Designed for telecom, industrial, and automotive DC-DC conversion applications.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LT3845AIFE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.6600(MOQ 1)
- 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#PBF?
- Wide 4 V to 60 V input voltage range with adjustable mode up to 36 V
- Current-mode control with adjustable operating frequency
- Burst mode operation for high light-load efficiency
- Drives external N-channel synchronous MOSFETs
- Programmable soft-start and overcurrent protection
- Compact SSOP-16 package for dense power supply designs
What is LT3845AIFE#PBF used for?
The LT3845AIFE#PBF is ideal for high-voltage DC-DC step-down power supplies in telecom equipment, industrial automation, and distributed power architectures where input rails range from 4 V to 60 V. Its current-mode control with burst mode delivers high efficiency across load conditions, making it suitable for always-on systems with variable load profiles. The device is also used in automotive and railway power systems that demand robust operation over wide input voltage swings.
What are the specifications of LT3845AIFE#PBF?
| 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#PBF datasheet?
LT3845AIFE#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3845AIFE#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LT3845AIFE#PBF support and how does it handle high-voltage industrial rails?
The LT3845AIFE#PBF accepts input voltages from 4 V to 60 V, covering standard 12 V, 24 V, and 48 V industrial rails without external pre-regulation. In adjustable mode it can operate up to 36 V output, giving designers flexibility for multi-rail power architectures in telecom and factory automation equipment.
How does burst mode operation in the LT3845AIFE#PBF improve efficiency at light loads in standby power supplies?
Burst mode reduces switching losses by skipping unnecessary cycles when the load current drops below a threshold, maintaining output regulation while consuming far less than 1 mA of quiescent current. This makes the controller well suited for always-on standby supplies where the load can vary from a few milliamps to several amperes during active operation.
For a 48 V telecom bus converter design, what external MOSFETs are compatible with the LT3845AIFE#PBF gate driver?
The LT3845AIFE#PBF drives external N-channel MOSFETs rated above 60 V, typically 80 V or 100 V devices, to provide adequate derating on a 48 V input bus. Gate drive voltage levels are compatible with standard logic-level and standard-threshold MOSFETs, enabling designers to optimize switch resistance (RDS(on)) and switching speed for target output power levels up to tens of amperes.
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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+ | $12.4600 | $12.46 |
| 10+ | $8.5810 | $85.81 |
| 19+ | $7.5000 | $142.50 |
| 1000+ | $5.6600 | $5660.00 |
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