
For Reference Only
Part Number | LM78S40CN |
OEMstron Part # | LM78S40CN |
Manufacturer | Texas Instruments |
Category | Semiconductors › Power Management ICs › Voltage Regulators - DC DC Switching Regulators |
Description | IC REG BUCK BST ADJ 1.5A 16DIP |
Lifecycle | Obsolete |
RoHS | No RoHS Information |
EDA/CAD Models | LM78S40CN PCB Footprint and Symbol |
Warehouses | USA, Europe, China, Hong Kong SAR |
Estimated Delivery | Mar 16 - Mar 21 (Choose Expedited Shipping) |
Warranty | Up to 1 year [Limited-Warranty]* |
Payment | ![]() |
Shipping | ![]() |
LM78S40CN Specifications
Part Number | LM78S40CN | |
Brand | Texas Instruments | |
Lifecycle | Obsolete | |
RoHS | No RoHS Information | |
Product Line | Semiconductors | |
Category | Power Management ICs | |
Subcategory | Voltage Regulators - DC DC Switching Regulators | |
Manufacturer | ||
Series | - | |
Function | Step-Up, Step-Down | |
Output Configuration | Positive or Negative | |
Topology | Buck, Boost | |
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 (Switch) | |
Current - Output | 1.5A (Switch) | |
Frequency - Switching | 100Hz ~ 100kHz | |
Synchronous Rectifier | No | |
Operating Temperature | 0°C ~ 70°C (TA) | |
Mounting Type | Through Hole | |
Package / Case | 16-DIP (0.300", 7.62mm) | |
Supplier Device Package | 16-PDIP |
LM78S40CN Documents

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Global Supply Chains - Reliable and Authorized Distributor Resources
Part Number | Description | Stock |
LM78S40CN/NOPB D# V99:2348_07282876 Texas Instruments |
Conv DC-DC 2.5V to 40V Step Down Single-Out 1.25V to 40V 1.5A 16-Pin PDIP Tube RoHS: Compliant
|
Americas - 248 |
Part Number | Description | Stock |
LM78S40CN/NOPB National Semiconductor Corporation |
52 | |
LM78S40CN National Semiconductor Corporation |
490 |
Part Number | Description | Stock |
LM78S40CN/NOPB Texas Instruments |
IC, DC/DC CONVERTER, 1.5A |
18 |
LM78S40CN Texas Instruments |
Min Qty 4 |
454 |
Part Number | Description | Stock |
LM78S40CN National Semiconductor Corporation |
RoHS: Not Compliant
|
Europe - 50 |
Part Number | Description | Stock |
LM78S40CN D# 2156-LM78S40CN-ND Rochester Electronics LLC |
1.5A, 100KHZ BIPOLAR, PDIP16 |
1329 In Stock |
LM78S40CN/NOPB D# LM78S40CN/NOPB-ND Texas Instruments |
IC REG BUCK BST ADJ 1.5A 16DIP |
874 In Stock |
Part Number | Description | Stock |
LM78S40CN D# LM78S40CN National Semiconductor Corporation |
Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct |
2679 |
Part Number | Description | Stock |
LM78S40CN/NOPB National Semiconductor Corporation |
In stock shipping within 2days |
136 |
LM78S40CN National Semiconductor Corporation |
In stock shipping within 2days |
2000 |
Part Number | Description | Stock |
LM78S40CN/NOPB D# 3007239 Texas Instruments |
IC, DC/DC CONVERTER, 1.5A RoHS: Compliant
Min Qty: 1
Container: Each
|
476 |
Part Number | Description | Stock |
LM78S40CNNOPB TEXAS INSTRUMENTS |
OEM/CM QUOTES ONLY | NO BROKERS |
667 |
LM78S40CN National Semiconductor Corporation |
OEM/CM QUOTES ONLY | NO BROKERS |
5800 |
Part Number | Description | Stock |
LM78S40CN Texas Instruments |
OEM/CM ONLY |
979 |
LM78S40CNNOPB Texas Instruments |
OEM/CM ONLY |
239 |
LM78S40CNPBF Texas Instruments |
OEM/CM ONLY |
140 |
Part Number | Description | Stock |
LM78S40CN National Semiconductor Corporation |
In stock |
191 |
Part Number | Description | Stock |
LM78S40CN National Semiconductor Corporation |
OEM/CM Immediate delivery |
1325 |
LM78S40CN/NOPB National Semiconductor Corporation |
OEM/CM Immediate delivery |
196 |
Part Number | Description | Stock |
LM78S40CN/NOPB D# 926-LM78S40CN/NOPB Texas Instruments |
Switching Voltage Regulators Uni Switching Reg Subsystem RoHS: Compliant
|
681 |
Part Number | Description | Stock |
LM78S40CN/NOPB D# 29AH6415 Texas Instruments |
IC, DC/DC CONVERTER, 1.5A, Topology:Buck, Boost, Inverting, Input Voltage Min:2.5V, Input Voltage Max:40V, No. of Outputs:1Outputs, DC / DC Converter IC Case:DIP, No. of Pins:16Pins, Output Current:1.5A, Output Voltage Min:2.5V, RoHS Compliant: Yes RoHS: Compliant
Min Qty: 1
Container: Bulk
|
475 |
Part Number | Description | Stock |
LM78S40CN/NOPB D# NS-LM78S40CN/NOPB Texas Instruments |
OEM/CM ONLY |
1223 |
LM78S40CN D# NS-LM78S40CN Texas Instruments |
OEM/CM ONLY |
4564 |
Part Number | Description | Stock |
LM78S40CN National Semiconductor Corporation |
Swithed-Mode Power Supply Controller, Voltage Mode Type, Bi-Polar, 16 Pin, Plastic, DIP |
7 |
LM78S40CN/NOPB National Semiconductor Corporation |
IC,SMPS CONTROLLER,VOLTAGE-MODE,BIPOLAR,DIP,16PIN,PLASTIC |
28 |
Part Number | Description | Stock |
LM78S40CN D# LM78S40CN National Semiconductor Corporation |
Semiconductor |
42 |
Part Number | Description | Stock |
LM78S40CN/NOPB D# 0460960P Texas Instruments |
Texas Instruments LM78S40CN/NOPB, PWM Voltage Mode Controller, 100 kHz 16-Pin, MDIP, TU of 5 Min Qty: 5
Container: Tube
|
0 |
Part Number | Description | Stock |
LM78S40CN National Semiconductor Corporation |
Switching Regulator, Current-mode, 1.5A, 100kHz Switching Freq-Max, BIPolar, PDIP16 RoHS: Not Compliant
|
1329 |
LM78S40CN/NOPB National Semiconductor Corporation |
LM78 Microprocessor System Hardware Monitor RoHS: Compliant
|
46 |
Part Number | Description | Stock |
LM78S40CN/NOPB National Semiconductor Corporation |
OEM/CM ONLY |
172 |
LM78S40CN National Semiconductor Corporation |
OEM/CM ONLY |
10115 |
Part Number | Description | Stock |
LM78S40CN/NOPB National Semiconductor Corporation |
IN stock Immediate delivery |
191 |
LM78S40CN National Semiconductor Corporation |
IN stock Immediate delivery |
1340 |
Part Number | Description | Stock |
LM78S40CN D# 2028026031 National Semiconductor Corporation |
LM78S40CN NSC ic |
50 |
Part Number | Description | Stock |
LM78S40CN/NOPB Texas Instruments |
Microprocessor System Hardware Monitor |
9,857 |
Part Number | Description | Stock |
LM78S40CN/NOPB National Semiconductor Corporation |
shipping today |
11 |
LM78S40CN National Semiconductor Corporation |
shipping today |
6396 |
Part Number | Description | Stock |
LM78S40CN/NOPB D# 53288119 Texas Instruments |
Conv DC-DC 2.5V to 40V Step Down Single-Out 1.25V to 40V 1.5A 16-Pin PDIP Tube RoHS: Compliant
|
Americas - 248 |
Part Number | Description | Stock |
LM78S40CN National Semiconductor Corporation |
RFQ |
5604 |
LM78S40CN/NOPB Texas Instruments |
RFQ |
10049 |
Part Number | Description | Stock |
LM78S40CN Texas Instruments |
Universal Switching Regulator Subsystem | IC REG BUCK BST ADJ 1.5A 16DIP |
870 |
Part Number | Description | Stock |
LM78S40CN/NOPB D# 3007239 Texas Instruments |
IC, DC/DC CONVERTER, 1.5A RoHS: Compliant
Min Qty: 1
Container: Each
|
487 |
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