LM78S40J

$8.39

Description：IC REG BUCK BST ADJ 1.5A 16CDIP
Series：LM78S40
Mfr：National Semiconductor
Package：Bulk

SKU:ab7cbf1c677d Category: Voltage Regulators - DC DC Switching Regulators Brand: National Semiconductor

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Product introduction

LM78S40J is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists National Semiconductor. Its product description is IC REG BUCK BST ADJ 1.5A 16CDIP. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM78S40J

Description：IC REG BUCK BST ADJ 1.5A 16CDIP
Series：LM78S40
Mfr：National Semiconductor
Package：Bulk
Function：Step-Up, Step-Down
Output Configuration：Positive or Negative
Topology：Boost, Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：2.5V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：1.25V
Voltage - Output (Max)：40V
Current - Output：1.5A (Switch)
Frequency - Switching：100Hz ~ 100kHz
Synchronous Rectifier：No
Operating Temperature：-55°C ~ 125°C
Mounting Type：Through Hole
Package / Case：16-CDIP (0.300", 7.62mm)
Supplier Device Package：16-CDIP
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM78S40J

LM78S40J

Voltage Regulators - DC DC Switching Regulators Overview

The LM78S40J is a universal switching regulator subsystem manufactured by National Semiconductor. It integrates a current-mode controller, power switch, and protection circuits into a single package. The device supports peak current mode control for fast transient response. It operates with a maximum switching frequency of 100 kHz. The component is housed in a bipolar PDIP-16 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrates current-mode control architecture with internal power switch
Provides comprehensive protection against overcurrent and thermal overload
Supports versatile topologies including buck, boost, and flyback configurations

Voltage Regulators - DC DC Switching Regulators Applications

Universal input AC/DC power supplies
Battery charger circuits
Isolated DC/DC converter designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix J indicates the military or extended temperature grade variant compared to commercial grades. Confirm the PDIP-16 package integrity upon receipt. Ensure compatibility with existing board layouts designed for this footprint. Check for lead-free compliance if required by project specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a monolithic solution for high-power switching is required. It simplifies design by eliminating external driver stages. Consider its thermal performance in high-duty cycle applications. Evaluate the need for its specific protection thresholds against system requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM78S40 family of universal switching regulators. It was originally developed by National Semiconductor before the company's acquisition by Texas Instruments. The series is known for robust performance in offline power conversion applications.