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.

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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.

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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

BQ76942PFBR Battery Monitor Selection and Procurement Guide

SEP0640Q38CB Surge Protection Board Validation Guide

BQ76942PFBR Battery Monitor Board Validation Guide

ECA1JHG220 Power-Rail Filter Design and Validation

Why Buy from FindMyChip

About Texas Instruments

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