LMR51420XDDCR
Voltage Regulators - DC DC Switching Regulators
Technical Specifications
| Type | Description |
|---|---|
| Output Type | Adjustable |
| Output Voltage | 17.4 V |
| Output Current | 2 A |
| Function | Step-down type |
| Working Voltage V | 20.25 V |
| Switching Freq Hz | 500 kHz |
| Channels | 1 |
| Type | Description |
|---|---|
| Iq A | 4e-05 |
| Switch tube (built-in/external) | Built-in |
| Operating Temp | -40°C ~ +150°C @(TJ) |
| Features | Cycle-by-cycle current limiting;Hiccup current limiting;Light load efficient mode;Overcurrent Protection |
| Topology | Buck |
| Package / Case | SOT-23-6 |
Product Introduction
The LMR51420 is a wide-V_IN, 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.
Features
- Functional Safety-Capable Documentation available to aid functional safety system design
- Configured for rugged industrial applications
- 4.5-V to 36-V input voltage range
- 2-A continuous output current
- 70-ns minimum switching on time
- 500-kHz and 1.1-MHz fixed switching frequency options
- 40°C to 150°C junction temperature range
- 98% maximum duty cycle
- Start-up with prebiased output
- Internal short circuit protection with hiccup mode
- ±1.5% tolerance voltage reference
- Precision enable
- Small solution size and ease of use
- Integrated synchronous rectification
- Internal compensation for ease of use
- SOT-23 package
- Pin-to-pin compatible with the TPS54202 and TPS54302
- PFM and forced PWM (FPWM) options available
- Create a custom design using the LMR51420 with the WEBENCH Power Designer
Applications
- - Appliances - Building automation - Motor drives - General purpose wide V_IN power supplies
Datasheet
Alternative Parts
Common LMR51420XDDCR alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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