LMR51420YDDCR
ActiveSIMPLE SWITCHER® POWER CONVERTER 4.5V-TO-36V, 2A, SYNCHRONOUS BUCK WITH 40ΜA IQ
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LMR51420YDDCR
ActiveSIMPLE SWITCHER® POWER CONVERTER 4.5V-TO-36V, 2A, SYNCHRONOUS BUCK WITH 40ΜA IQ
Technical Specifications
Parameters and characteristics for this part
| Specification | LMR51420YDDCR |
|---|---|
| Current - Output | 2 A |
| Frequency - Switching | 1.1 MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | TSOT-23-6, SOT-23-6 Thin |
| Supplier Device Package | SOT-23-THIN |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 36 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Max) [Max] | 34.2 V |
| Voltage - Output (Min/Fixed) | 0.6 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 | $ 1.45 | |
| 10 | $ 1.30 | |||
| 25 | $ 1.23 | |||
| 100 | $ 1.01 | |||
| 250 | $ 0.95 | |||
| 500 | $ 0.84 | |||
| 1000 | $ 0.66 | |||
| Digi-Reel® | 1 | $ 1.45 | ||
| 10 | $ 1.30 | |||
| 25 | $ 1.23 | |||
| 100 | $ 1.01 | |||
| 250 | $ 0.95 | |||
| 500 | $ 0.84 | |||
| 1000 | $ 0.66 | |||
| Tape & Reel (TR) | 3000 | $ 0.62 | ||
| 6000 | $ 0.58 | |||
| 15000 | $ 0.56 | |||
| Texas Instruments | LARGE T&R | 1 | $ 0.99 | |
| 100 | $ 0.76 | |||
| 250 | $ 0.56 | |||
| 1000 | $ 0.40 | |||
Description
General part information
LMR51420 Series
The LMR51420 is a wide-VIN, easy-to-use SIMPLE SWITCHER power converter synchronous buck converter capable of driving up to 2-A load current. With a wide input range of 4.5 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.
The LMR51420 operates at 500-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. The device has a PFM version to realize high efficiency at light load and FPWM version to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.
The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR51420 is available in a 6-pin SOT-23 package.