LMR51430XDDCR
ActiveSIMPLE SWITCHER® 4.5-V TO 36-V, 3-A SYNCHRONOUS BUCK CONVERTER WITH 40-ΜA IQ
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LMR51430XDDCR
ActiveSIMPLE SWITCHER® 4.5-V TO 36-V, 3-A SYNCHRONOUS BUCK CONVERTER WITH 40-ΜA IQ
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LMR51430XDDCR |
|---|---|
| Current - Output | 3 A |
| Frequency - Switching | 500 kHz |
| 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 |
LMR51430 Series
SIMPLE SWITCHER® 4.5-V to 36-V, 3-A synchronous buck converter with 40-µA IQ
| Part | Package / Case | Current - Output | Voltage - Input (Min) [Min] | Voltage - Input (Max) [Max] | Frequency - Switching | Operating Temperature [Max] | Operating Temperature [Min] | Output Configuration | Function | Topology | Synchronous Rectifier | Output Type | Voltage - Output (Max) [Max] | Supplier Device Package | Voltage - Output (Min/Fixed) | Mounting Type | Number of Outputs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | SOT-23-6 Thin TSOT-23-6 | 3 A | 4.5 V | 36 V | 500 kHz | 150 °C | -40 °C | Positive | Step-Down | Buck | Adjustable | 34.2 V | SOT-23-THIN | 0.6 V | Surface Mount | 1 | |
Texas Instruments | SOT-23-6 Thin TSOT-23-6 | 3 A | 4.5 V | 36 V | 1.1 MHz | 150 °C | -40 °C | Positive | Step-Down | Buck | Adjustable | 34.2 V | SOT-23-THIN | 0.6 V | Surface Mount | 1 | |
Texas Instruments | SOT-23-6 Thin TSOT-23-6 | 3 A | 4.5 V | 36 V | 1.1 MHz | 150 °C | -40 °C | Positive | Step-Down | Buck | Adjustable | 34.2 V | SOT-23-THIN | 0.6 V | Surface Mount | 1 | |
Texas Instruments | SOT-23-6 Thin TSOT-23-6 | 3 A | 4.5 V | 36 V | 500 kHz | 150 °C | -40 °C | Positive | Step-Down | Buck | Adjustable | 34.2 V | SOT-23-THIN | 0.6 V | Surface Mount | 1 |
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 | $ 2.19 | |
| 10 | $ 1.40 | |||
| 25 | $ 1.19 | |||
| 100 | $ 0.96 | |||
| 250 | $ 0.85 | |||
| 500 | $ 0.78 | |||
| 1000 | $ 0.72 | |||
| Digi-Reel® | 1 | $ 2.19 | ||
| 10 | $ 1.40 | |||
| 25 | $ 1.19 | |||
| 100 | $ 0.96 | |||
| 250 | $ 0.85 | |||
| 500 | $ 0.78 | |||
| 1000 | $ 0.72 | |||
| Tape & Reel (TR) | 3000 | $ 0.65 | ||
| 6000 | $ 0.61 | |||
| 9000 | $ 0.59 | |||
| 15000 | $ 0.57 | |||
| Texas Instruments | LARGE T&R | 1 | $ 1.11 | |
| 100 | $ 0.85 | |||
| 250 | $ 0.63 | |||
| 1000 | $ 0.45 | |||
Description
General part information
LMR51430 Series
The LMR51430 is a wide-VIN, easy-to-use SIMPLE SWITCHER power converter synchronous buck converter capable of driving up to 3-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 LMR51430 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 LMR51430 is available in a 6-pin SOT-23 package.