LM78S40CN/NOPB Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

Name: LM78S40CN/NOPB
Brand: Texas Instruments
SKU: LM78S40CN/NOPB
Availability: InStock

Texas Instruments LM78S40CN/NOPB is a PWM voltage-mode switching regulator controller operating up to 100 kHz with 2.5 V–40 V input range in a 16-Pin DIP package. From $1.21, in stock with worldwide shipping.

ACTIVEIntegrated CircuitVerified May 2026

Package / Visual Reference

LM78S40CN/NOPBDual-In-Line Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Dual-In-Line Packages
Pin Count: 16
Lifecycle: ACTIVE
Datasheet: LM78S40CN/NOPB Datasheet PDF
Category: Integrated Circuit
Price: From $1.2100(MOQ 1)
Temp Range: -55.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LM78S40CN/NOPB?

PWM voltage-mode control with up to 100 kHz switching frequency for efficient power conversion
Wide input voltage range of 2.5 V to 40 V supports diverse power supply designs
Current-mode control technique enables precise regulation and fast transient response
16-Pin MDIP package simplifies board layout and through-hole assembly
Single-function design optimized for dedicated switching regulator applications

What is LM78S40CN/NOPB used for?

The LM78S40CN/NOPB is widely used in DC-DC buck, boost, and flyback switching power supply designs for industrial and telecommunications equipment. Its wide input range and PWM current-mode control make it suitable for battery-powered systems, embedded power modules, and voltage regulation circuits requiring stable output under varying load conditions.

What are the specifications of LM78S40CN/NOPB?

YTEOL	15
Analog IC - Other Type	SWITCHING REGULATOR
Control Mode	CURRENT-MODE
Control Technique	PULSE WIDTH MODULATION
Input Voltage-Max	40V
Input Voltage-Min	2.5V
Input Voltage-Nom	5V
JESD-30 Code	R-PDIP-T16
JESD-609 Code	e3
Number of Functions	1
Number of Outputs	1
Output Current-Max	1.5A
Output Voltage-Max	40V
Output Voltage-Min	1.245V
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	DIP16,.3
Package Shape	RECTANGULAR
Package Style	IN-LINE
Qualification Status	Not Qualified
Supply Current-Max (Isup)	2mA
Supply Voltage-Nom (Vsup)	5V
Surface Mount	NO
Switcher Configuration	BUCK-BOOST
Switching Frequency-Max	100kHz
Technology	BIPOLAR
Temperature Grade	MILITARY
Terminal Finish	Matte Tin (Sn)
Terminal Form	THROUGH-HOLE
Terminal Pitch	2.54mm
Terminal Position	DUAL
## LM78S40CN/NOPB Alternates Showing results	Image
Package	Dual-In-Line Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.90

Where can I find the LM78S40CN/NOPB datasheet?

LM78S40CN/NOPB Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for LM78S40CN/NOPB?

Compatible alternatives and drop-in replacements for LM78S40CN/NOPB:

REF3030AIDBZT

suggested

View Part →

LM78S40CNTexas Instruments

Switching Regulator, Current-mode, 1.5A, 100kHz Switching Freq-Max, BIPolar, PDIP16

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What is the input voltage range of the LM78S40CN/NOPB?

The LM78S40CN/NOPB operates over an input voltage range of 2.5 V minimum to 40 V maximum, with a nominal input of 5 V, making it suitable for a wide variety of power supply topologies.

What switching frequency does the LM78S40CN/NOPB support?

The LM78S40CN/NOPB supports a maximum switching frequency of 100 kHz using pulse width modulation (PWM) in current-mode control, enabling compact transformer and inductor designs.

What package does the LM78S40CN/NOPB come in?

The LM78S40CN/NOPB is available in a 16-Pin MDIP (Dual-In-Line Package), a standard through-hole form factor that simplifies prototyping and production assembly.

What are typical applications for the LM78S40CN/NOPB?

Typical applications include DC-DC switching regulators (buck, boost, flyback), industrial power supplies, telecom power modules, and embedded systems requiring regulated voltage rails with efficient PWM control.

Related Guides

STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply

Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.

Aug 1, 2026

STM32H725IGT3 High-Performance MCU Design Guide

Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.

Jul 31, 2026

150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing

Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.

Jul 31, 2026

STEF05SGR 5 V eFuse Protection Design Guide

Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.

Jul 30, 2026

Why Buy from FindMyChip

Authorized Source

Verified supply chain with full traceability & inspection

Competitive Pricing

Factory-direct from China distributors, low MOQ

Fast Shipping

DHL Express 3–5 days · FedEx/UPS 5–7 days worldwide

Quality Guaranteed

30-day replacement for defective parts, no questions asked

About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

View all Texas Instruments parts →

More from Texas Instruments

SN74HC138PWT

Small Outline Packages

Integrated Circuit

MCP6292IDGKT

Small Outline Packages

Integrated Circuit

CD4511BMN

Dual-In-Line Packages

Integrated Circuit

UCC2803DG4

Small Outline Packages

Integrated Circuit

MC33078DRE4

Small Outline Packages

Integrated Circuit

TLV6710DDCT

SOT23 (6-Pin)

Integrated Circuit

AvailabilityIn Stock

Reference Price (USD)

From $1.2100

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$2.6000	$2.60
3+	$1.9500	$5.85
10+	$1.7400	$17.40
12+	$1.4625	$17.55
36+	$1.2188	$43.88
2500+	$1.2100	$3025.00

pcs

Unit price: $2.6000 · Total: $2.60

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”

Rajesh Patel

Procurement Manager, VoltEdge Energy, India

LM78S40CN/NOPB Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

What are the key features of LM78S40CN/NOPB?

What is LM78S40CN/NOPB used for?

What are the specifications of LM78S40CN/NOPB?

Compliance & Regulatory

Where can I find the LM78S40CN/NOPB datasheet?

What are equivalent replacements for LM78S40CN/NOPB?

Frequently Asked Questions

What is the input voltage range of the LM78S40CN/NOPB?

What switching frequency does the LM78S40CN/NOPB support?

What package does the LM78S40CN/NOPB come in?

What are typical applications for the LM78S40CN/NOPB?

Related Guides

STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply

STM32H725IGT3 High-Performance MCU Design Guide

150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing

STEF05SGR 5 V eFuse Protection Design Guide

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

You May Also Like