PMIC - Voltage Regulators - DC DC Switching Regulators SWITCHING REGULATOR 14-VDFN Exposed Pad 0.8mm SWITCHING REGLTR, VOLTAGE-MODE
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Nov 1, 2021
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PMIC - Voltage Regulators - DC DC Switching Regulators SWITCHING REGULATOR 14-VDFN Exposed Pad 0.8mm SWITCHING REGLTR, VOLTAGE-MODE
LM2678 is a high-efficiency 5-A step-down voltage regulator. This article is going to explain pinout, datasheet, circuit, features, and other details about the LM2678 voltage regulator. Furthermore, there
LM2678LD-12
The LM2678 series of regulators are monolithic integrated circuits that perform all of the tasks of a buck switching regulator while driving up to 5A loads. The IC has high efficiency of over 90% and excellent load and line regulation. The LM2678 has three fixed output voltages (3.3V, 5V, and 12V) as well as an adjustable output version. Thermal shutdown, current limiting, and ON/OFF control are only a few of the functions included in the IC.
LM2678 Pinout
| Pin No | Pin Name | Description |
| 1 | SWITCH OUT | Switch Output Pin |
| 2 | IN | Input Pin |
| 3 | C BOOST | C Boost Pin |
| 4 | GND | Ground Pin |
| 5 | NC | No Connection |
| 6 | FEEDBACK | Feedback Pin |
| 7 | ON/OFF | On/Complement Off Pin |
LM2678 Symbol
LM2678 Footprint
LM2678 3D Model
Rochester Electronics, LLC LM2678LD-12 technical specifications, attributes, parameters and parts with similar specifications to Rochester Electronics, LLC LM2678LD-12.
| Product Attribute | Attribute Value | |
|---|---|---|
| Mounting Type | Surface Mount | |
| Package / Case | 14-VDFN Exposed Pad | |
| Surface Mount | YES | |
| Operating Temperature (Max.) | 125°C | |
| Operating Temperature (Min.) | -40°C | |
| Packaging | Tape & Reel (TR) | |
| JESD-609 Code | e0 | |
| Pbfree Code | yes | |
| Part Status | Obsolete | |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | |
| Number of Terminations | 14Terminations |
| Product Attribute | Attribute Value | |
|---|---|---|
| Terminal Finish | TIN LEAD | |
| Terminal Position | DUAL | |
| Terminal Form | NO LEAD | |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED | |
| Number of Functions | 1Function | |
| Terminal Pitch | 0.8mm | |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | |
| Pin Count | 14 | |
| JESD-30 Code | R-XDSO-N14 | |
| Input Voltage-Nom | 24V | |
| Temperature Grade | AUTOMOTIVE |
| Product Attribute | Attribute Value | |
|---|---|---|
| Analog IC - Other Type | SWITCHING REGULATOR | |
| Input Voltage (Min) | 15V | |
| Output Current-Max | 8.75A | |
| Input Voltage (Max) | 40V | |
| Control Technique | PULSE WIDTH MODULATION | |
| Switcher Configuration | BUCK | |
| Switching Frequency-Max | 280kHz | |
| Length | 6mm | |
| Height Seated (Max) | 1mm | |
| Width | 5mm | |
| RoHS Status | Non-RoHS Compliant |
LM2678 Block Diagram
Step Down Regulator Capable of Delivering 5A
Wide Input Range up to 40V
2% Output Tolerance
260 kHz Fixed Frequency Oscillator
Efficiency up to 92%
Simple-to-Design, High Efficiency (>90%) Step-down Switching Regulators
Efficient System Preregulator for Linear Voltage Regulators
Battery Chargers
LM2678 Application Circuit
The regulator's input voltage is sent into pin 2 of the IC. Input bye-pass capacitors C1 to C4 are used. When the IC's control switch is turned on first, they also provide current to it. Capacitor C5 enhances the internal MOSFET's gate drive and turns it fully ON. This reduces switching losses and aids in the attainment of high efficiency. Pin7 is the ON/OFF pin, and if this pin is connected to the ground, the regulator will shut down. During shutdown mode, the current drain will be less than 50uA. As a freewheeling diode, the Schottky diode D1 is employed. The current from inductor L1 travels through this diode when the control switch (internal MOSFET) is turned off. C6 and C7 capacitors, as well as output filter capacitors.
LM2678 Package Dimensions
Rochester Electronics ranks as a global leading semiconductor provider. Due to their products' characteristics of high quality and durability, these products are suitable for long-term production and maintenance in the fields of industry, transportation, and high-reliability markets. Their large inventory includes more than 100,000 products and 15 billion units, making them exceed other companies in terms of selection, capabilities, or solutions.
Download datasheets and manufacturer documentation for LM2678LD-12
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