LTC1147IS8-3.3#PBF

$10.22

Description：IC REG CTRLR BUCK 8SOIC
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:c51979a851dd Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR BUCK 8SOIC
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：3.5V ~ 14V
Frequency - Switching：-
Duty Cycle (Max)：100%
Synchronous Rectifier：No
Clock Sync：No
Serial Interfaces：-
Control Features：Current Limit, Enable
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SO

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LTC1147IS8-3.3#PBF

Overview

The LTC1147IS8-3.3#PBF is a high-efficiency step-down switching regulator controller manufactured by Analog Devices Inc. It operates with an input voltage range of 3.5V to 12V and provides a fixed 3.3V output. The device supports up to 700mA output current and features a 400kHz switching frequency. It utilizes automatic Burst Mode operation to maintain efficiency at low load currents. The component is housed in an 8-lead SOIC package and functions within a temperature range of -40°C to +85°C.

Feature Summary

Features automatic Burst Mode operation to maintain high efficiency during low output current conditions
Provides current-mode control with integrated current limit and enable functionality
Supports 100% maximum duty cycle for low dropout performance

Applications

Battery-powered portable equipment requiring extended runtime
Industrial control systems with variable load profiles
Communication infrastructure power supplies

Procurement Notes

Verify the specific suffix #PBF indicates lead-free RoHS compliance when sourcing. Confirm the IS8 variant matches the required industrial temperature range (-40°C to +85°C) compared to commercial grades. Ensure the 8-lead SOIC footprint aligns with the PCB layout specifications before finalizing procurement orders.

Selection Notes

Select this controller for applications requiring fixed 3.3V output from higher input voltages. Consider the 400kHz switching frequency for balancing component size and efficiency. Verify that external MOSFETs can handle the required current and voltage stresses, as this is a controller rather than a complete converter.

Part Context

This component belongs to the LTC1147 series of step-down switching regulator controllers. It shares functional similarities with other members like the LTC1147CS8-3.3#PBF but differs in operating temperature range and packaging. The series is designed for efficient DC-DC conversion in space-constrained designs.

Replacement Considerations

The LTC1147CS8-3.3#PBF serves as a commercial grade alternative with similar electrical characteristics but a limited 0°C to +70°C operating range. Verify thermal requirements before substituting.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.