LTC1147CS8-3.3#PBF

$8.93

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

SKU:b069f5e85547 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：0°C ~ 70°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SO

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LTC1147CS8-3.3#PBF

Overview

The LTC1147CS8-3.3#PBF is a high-efficiency step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 3.5V to 12V and provides a fixed 3.3V output with a maximum current capability of 700mA. The device features a switching frequency of 400kHz and ultra-low quiescent current of 20µA. It utilizes Burst Mode operation for improved light-load efficiency. The component is housed in an 8-pin SOIC package and supports shutdown functionality.

Feature Summary

Automatic Burst Mode operation maintains high efficiency at low output currents
Fixed 3.3V output voltage configuration
Ultra-low static current consumption of 20µA
Integrated shutdown control pin

Applications

Battery-powered portable equipment
Low-power embedded systems
Industrial control modules requiring efficient buck conversion

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging. Confirm the CS8 variant meets commercial temperature specifications (0°C to +70°C). Ensure the source document explicitly lists this exact part number as available, as distribution status may vary by region and time.

Selection Notes

Select this component when a fixed 3.3V output is required without external feedback resistors. The integrated controller simplifies design by reducing external component count compared to adjustable regulators. Verify that the 700mA output current meets the load requirements and that the 400kHz frequency aligns with inductor selection constraints.

Part Context

This part belongs to the LTC1147 series of high-efficiency step-down switching regulator controllers. The series includes variants with different output voltages and packages, such as the IS8 industrial grade and CN8 PDIP options. The CS8 designation specifically denotes the commercial temperature range and SOIC-8 surface-mount package.

Replacement Considerations

The LTC1147IS8-3.3#PBF serves as the industrial temperature rated equivalent. The LTC1147CN8-5#PBF offers a different package and fixed 5V output. Direct substitution requires verifying temperature range and output voltage compatibility.

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

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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

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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.