LM22678TJE-5.0/NOPB
ActiveSIMPLE SWITCHER® 4.5V TO 42V, 5A STEP-DOWN VOLTAGE REGULATOR WITH PRECISION ENABLE
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LM22678TJE-5.0/NOPB
ActiveSIMPLE SWITCHER® 4.5V TO 42V, 5A STEP-DOWN VOLTAGE REGULATOR WITH PRECISION ENABLE
Technical Specifications
Parameters and characteristics for this part
| Specification | LM22678TJE-5.0/NOPB |
|---|---|
| Current - Output | 5 A |
| Frequency - Switching | 500 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | 1.81 mOhm |
| Package / Case | TO-263-7 Thin |
| Supplier Device Package | TO-263-7 Thin |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 42 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Min/Fixed) | 5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 6.84 | |
| 10 | $ 6.18 | |||
| 25 | $ 5.89 | |||
| 100 | $ 5.12 | |||
| Digi-Reel® | 1 | $ 6.84 | ||
| 10 | $ 6.18 | |||
| 25 | $ 5.89 | |||
| 100 | $ 5.12 | |||
| Tape & Reel (TR) | 250 | $ 4.89 | ||
| 500 | $ 4.46 | |||
| 1250 | $ 3.88 | |||
| 2500 | $ 3.74 | |||
| Texas Instruments | SMALL T&R | 1 | $ 5.24 | |
| 100 | $ 4.27 | |||
| 250 | $ 3.35 | |||
| 1000 | $ 2.85 | |||
Description
General part information
LM22678-Q1 Series
The LM22678 switching regulator provides all of the functions necessary to implement an efficient high-voltage step-down (buck) regulator using a minimum of external components. This easy-to-use regulator incorporates a 42-V N-channel MOSFET switch that can provide up to 5 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5-V output and adjustable output voltage options are available. A switching frequency of 500 kHz allows for small external components and good transient response. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typical). Built-in soft-start (500 µs, typical) saves external components. The LM22678 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.
The new product,LM61460, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See thedevice comparison tableto compare.Start WEBENCH design with LM61460
The LM22678 device is a member of Texas Instruments’ SIMPLE SWITCHER family. The SIMPLE SWITCHER concept provides for an easy-to-use complete design using a minimum number of external components and the TI WEBENCH design tool. TI’s WEBENCH tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in.
Documents
Technical documentation and resources
