LT3570IUF#PBF

$7.35

Description：IC REG TRIPLE BUCK/BST/LNR 24QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:00acb4099c73 Category: Voltage Regulators - Linear + Switching Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG TRIPLE BUCK/BST/LNR 24QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Topology：Step-Down (Buck) (1), Step-Up (Boost) (1), Linear (LDO) (1)
Number of Outputs：3
Frequency - Switching：500kHz ~ 2.1MHz
Voltage/Current - Output 1：Adj to 0.8V, 1.5A
Voltage/Current - Output 2：Adj to 0.8V, 1.5A
Voltage/Current - Output 3：Controller
w/LED Driver：No
w/Supervisor：No
w/Sequencer：No
Voltage - Supply：2.5V ~ 36V
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：24-WFQFN Exposed Pad
Supplier Device Package：24-QFN (4x4)
Grade：-
Qualification：-

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LT3570IUF#PBF

Overview

The LT3570IUF#PBF is a power management IC from Analog Devices featuring three independent regulators in a single package. It integrates a 1.5A synchronous buck converter, a 1.5A boost converter, and a low-dropout linear regulator (LDO). The device operates with an input voltage range of 2.7V to 5.5V. The buck and boost sections support switching frequencies up to 2MHz, while the LDO provides a fixed output voltage. The component is housed in a 24-lead QFN package rated for operation between -40°C and +125°C.

Feature Summary

Integrates three distinct regulation topologies: synchronous buck, boost, and LDO within a single compact footprint.
Provides high current capability with 1.5A continuous output for both the step-down and step-up converters.
Supports flexible switching frequency adjustment to optimize efficiency and external component size.
Includes comprehensive protection features such as thermal shutdown and current limiting for robust operation.

Applications

Portable devices requiring multiple voltage rails from a single lithium-ion cell
Industrial control systems needing isolated or non-isolated DC-DC conversion
Battery-powered equipment utilizing efficient step-up and step-down power management

Procurement Notes

Verify the specific suffix and tape/reel versus tube packaging requirements against your assembly line specifications. Confirm that the operating temperature range meets your environmental design constraints. Ensure compatibility with the intended input voltage source before finalizing procurement decisions.

Selection Notes

Select this component when space-constrained designs require simultaneous buck, boost, and linear regulation capabilities. Evaluate the total current demands of your load against the 1.5A limits of the switching regulators. Consider the thermal performance of the QFN-24 package relative to your PCB copper area and airflow conditions.

Part Context

This part belongs to the LT3570 family of triple-output power management solutions. It is designed to simplify bill-of-materials by replacing discrete components with a single integrated circuit. The series targets applications where board real estate is limited but multiple regulated voltages are necessary for system functionality.