LT1243IS8#TRPBF

$8.23

Description：IC REG CTRLR BUCK 8SOIC
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:c488fded9c56 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：Tape & Reel (TR),Cut Tape (CT)
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive, Isolation Capable
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：8.2V ~ 25V
Frequency - Switching：500kHz
Duty Cycle (Max)：96%
Synchronous Rectifier：No
Clock Sync：No
Serial Interfaces：-
Control Features：Frequency Control
Operating Temperature：-40°C ~ 100°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SO
Grade：-
Qualification：-

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LT1243IS8#TRPBF

Overview

The LT1243IS8#TRPBF is a current mode PWM controller designed for step-down DC-DC converters. It features a low start-up current of less than 250µA and a maximum operating current of 10mA. The device supports switching frequencies up to 500kHz with a 50ns current sense delay. It is housed in an 8-SOIC package and operates within a temperature range of -40°C to 100°C.

Feature Summary

Current mode operation for fast transient response
Low start-up current minimizes battery drain
Isolation-capable positive output design

Applications

Step-down DC-DC converter designs
Battery-powered portable electronics
Industrial power supply modules

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging, distinct from the tube-packaged #PBF variant. Confirm that the component meets RoHS compliance standards as specified by Analog Devices Inc. for this part number. Ensure the ordering documentation explicitly matches the requested packaging format to avoid fulfillment errors.

Selection Notes

Select this component when low quiescent current and high efficiency are critical for battery-operated applications. The 500kHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the input voltage range and load requirements align with the controller's operational specifications before integration.

Part Context

This part belongs to the LT1243 series of switching controllers manufactured by Analog Devices Inc. It is functionally similar to the LT1243IS8#PBF but differs in packaging configuration. The series is characterized by its robust current-mode architecture suitable for various buck converter topologies.

Replacement Considerations

LT1243IS8#PBF serves as a direct functional substitute with identical electrical characteristics, differing only in packaging type (tube versus tape and reel). Cross-reference pinouts and thermal performance to ensure compatibility during replacement.

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

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

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.