Rochester Electronics, LLCTO-220-5 Formed LeadsRoHS
LA5744-HK-E
STEP-DOWN SWITCHING REGULATOR
Category
Subcategory
Pmic Voltage Regulators Dc Dc Switching Regulators
Package
TO-220-5 Formed Leads
Status
Obsolete
$1.26 / unit (market reference)
MOQ: 239 pcs
Submit your quantity via the inquiry form for a competitive quote within 24 hours.
Parameters
| Parameter | Value |
|---|---|
| Brand | Rochester Electronics, LLC |
| Model | LA5744-HK-E |
| Package / Case | TO-220-5 Formed Leads |
| Mounting Type | Through Hole |
| Operating Temperature | -30°C ~ 125°C (TJ) |
| Topology | Buck |
| Voltage - Input (Min) | 4.5V |
| Voltage - Input (Max) | 28V |
| Voltage - Output | 1.23V |
| Current - Output | 3.1A (Switch) |
| Frequency - Switching | 300kHz |
| Number of Outputs | 1 |
| Supplier Device Package | 220-5HK |
| RoHS | RoHS |
| Part Status | Obsolete |
Application & Notes
LA5744-HK-E by Rochester Electronics, LLC is a Buck IC commonly used in power supply designs, battery-powered devices, and DC-DC conversion modules. Input voltage up to 28V, output 1.23V. The TO-220-5 Formed Leads package with surface mount mounting is standard for compact designs. Pay attention to input/output capacitor selection and PCB layout — switching regulators are sensitive to trace inductance.
You may also need
All Technical Specifications
| Function | Step-Down |
| Topology | Buck |
| Output Type | Adjustable |
| Current - Output | 3.1A (Switch) |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Frequency - Switching | 300kHz |
| Synchronous Rectifier | No |
| Voltage - Input (Max) | 28V |
| Voltage - Input (Min) | 4.5V |
| Voltage - Output (Max) | 28V |
| Voltage - Output (Min/Fixed) | 1.23V |
Request a Quote
Submit your quantity and details — we will reply within 24 hours.