LTC3850EUF#PBF

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LTC3850EUF#PBF

IC REG CTRLR BUCK 28QFN

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Specifications

Part Status Active
Output Type Transistor Driver
Function Step-Down
Output Configuration Positive
Topology Buck
Number of Outputs 2
Output Phases 2
Voltage - Supply (Vcc/Vdd) 4V ~ 24V
Frequency - Switching 250kHz ~ 780kHz
Duty Cycle (Max) 97.2%
Synchronous Rectifier Yes
Clock Sync No
Control Features Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package / Case 28-WFQFN Exposed Pad
Supplier Device Package 28-QFN (4x4)
Base Product Number LTC3850

Overview

Description

The LTC3850EUF#PBF is a high-performance dual output synchronous step-down switching regulator controller from Analog Devices. It is designed to provide efficient power conversion, suitable for applications requiring high output current and voltage regulation. The device features a wide input voltage range (4.5V to 60V) and can deliver output currents up to 30A per channel.
Key features include adjustable output voltage, a power good flag, and soft-start capability, which helps to prevent inrush current during startup. The LTC3850 also incorporates advanced control techniques, such as current-mode control, to optimize transient response and efficiency.
It is suitable for various applications, including telecommunications equipment, industrial power supplies, and high-performance computing. The package type is a 28-lead thermally enhanced HTSSOP, allowing for improved thermal management. Overall, the LTC3850EUF#PBF is a robust choice for designers looking to implement efficient and reliable power management solutions.

Features

The LTC3850EUF#PBF is a high-performance, synchronous step-down DC-DC controller designed for power management applications. Key features include:
1. Input Voltage Range: 4.5V to 60V, allowing for a wide range of input sources.
2. Output Voltage Programmability: Adjustable output voltage from 0.8V to 5V, with a precision of ±1%.
3. Dual-Channel Operation: Capable of controlling two outputs with current sharing for higher output power.
4. High Efficiency: Achieves efficiencies greater than 90% under typical loads.
5. Current Mode Control: Offers fast transient response and improved stability.
6. Integrated Gate Drivers: Drives external N-channel MOSFETs, reducing component count.
7. Overvoltage and Overcurrent Protection: Ensures safe operation under fault conditions.
8. Soft-Start Feature: Reduces inrush current during startup.
9. Programmable Switching Frequency: Adjustable from 250kHz to 1MHz for design flexibility.
Overall, the LTC3850EUF#PBF is suitable for various applications, including telecom, industrial, and automotive power supplies.

Package

The LTC3850EUF#PBF is packaged in a 28-lead TSSOP (Thin Shrink Small Outline Package). This type of package is characterized by its compact size and low profile, making it suitable for space-constrained applications.

Pinout

The LTC3850EUF#PBF is a dual-output synchronous step-down (buck) regulator controller from Analog Devices (formerly Linear Technology). It features a pin count of 28 pins.
The primary functions of the LTC3850 include:
1. Voltage Regulation: It regulates output voltage, providing precise control for dual outputs.
2. Current Sharing: It allows for current sharing between multiple parallel controllers.
3. Phase Control: Supports adjustable phase control for multiple devices to minimize input ripple and optimize performance.
4. Power Good Indicator: Provides a power good output to signal whether the output voltages are within regulation.
5. Compensation: Offers external compensation to optimize the performance based on specific application requirements.
6. Soft-Start: Implements a soft-start feature to minimize inrush current during startup.
7. Fault Protection: Offers overvoltage, undervoltage, and overcurrent protection.
The LTC3850 is suitable for applications requiring high efficiency and accurate voltage regulation, such as in telecommunications and industrial equipment.

Manufacturer

The manufacturer of the LTC3850EUF#PBF is Analog Devices, Inc. Analog Devices is a multinational company that specializes in designing and manufacturing high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, the company serves a wide range of industries, including telecommunications, automotive, industrial automation, medical equipment, and consumer electronics. They are known for their innovative solutions in signal processing and power management, contributing significantly to advancements in technology. The LTC3850 is specifically a dual output synchronous step-down DC/DC controller, widely used in power management applications.

Application

The LTC3850EUF#PBF is a dual-output synchronous step-down DC/DC controller, primarily used in applications requiring high efficiency and precise voltage regulation. Key application areas include power supplies for servers, telecommunications equipment, and industrial systems, as well as powering FPGAs, ASICs, and other digital circuits. It's also suitable for battery-powered devices due to its low quiescent current and ability to operate in a wide input voltage range.

Equivalent

The LTC3850EUF#PBF is a synchronous step-down voltage regulator controller. Equivalent products include the LM2675, TL5001, and MAX15022. It's important to verify specifications such as input/output voltage range, current capability, and features like compensation and protection to ensure compatibility for your specific application.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

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