LT1243IN8#PBF

$7.22

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

SKU:3d5899236cbd Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR BUCK 8DIP
Series：-
Mfr：Analog Devices Inc.
Package：Tube
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：Through Hole
Package / Case：8-DIP (0.300", 7.62mm)
Supplier Device Package：8-PDIP
Grade：-
Qualification：-

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LT1243IN8#PBF

Overview

The LT1243IN8#PBF is a high-speed current mode pulse width modulator manufactured by Analog Devices Inc. It operates as a buck switching controller with a fixed frequency of 500 kHz and supports up to 96% duty cycle. The device accepts an input supply voltage range of 8.2 V to 25 V and delivers a regulated output of 5 V at 1 A. Designed for surface mount installation, it utilizes an SOIC-8 package. The component functions within a temperature range of -40°C to +100°C and consumes a typical operating supply current of 7 mA.

Feature Summary

High-speed current mode control architecture for rapid transient response
Fixed 500 kHz switching frequency enabling compact passive component selection
Wide input voltage range supporting various power supply configurations
Non-isolated buck topology optimized for single-output regulation

Applications

Point-of-load DC-DC conversion modules
Industrial control system power distribution
Telecommunications equipment power supplies
Embedded systems requiring stable 5V rail generation

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm availability status as restricted or limited supply may apply. Ensure the SOIC-8 package matches your PCB footprint requirements. Check RoHS documentation for environmental compliance details before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high-speed current mode control with a fixed 500 kHz frequency. It is suitable for designs needing a 5V output from an 8.2V to 25V input range. Consider the SOIC-8 package size and -40°C to +100°C operating temperature range for thermal management. Ensure the non-isolated buck topology aligns with system safety and isolation requirements.

Part Context

The LT1243 series represents Analog Devices' high-speed current mode PWM controllers. The IN8 variant specifically denotes the industrial temperature grade in an 8-pin DIP package, while the IS8 variant offers the same electrical characteristics in an SOIC-8 surface-mount package. Both belong to the PMIC category focusing on efficient voltage regulation.