Overview
The LM76003RNPR from Texas Instruments is a high-performance synchronous step-down DC-DC converter. This device is capable of driving up to 3.5 A of load current from an input voltage range of 3.5 V to 60 V (with a maximum of 65 V). It is designed to provide exceptional efficiency and output accuracy in a compact solution size, making it suitable for a wide range of applications. The LM76003RNPR features peak current-mode control and requires few external components, simplifying PCB layout and ensuring best-in-class EMI and thermal performance.
Key Specifications
| Specification | Value |
|---|---|
| Package | WQFN (RNP) 30 pins |
| Operating Temperature Range | -40°C to 125°C |
| Input Voltage | 3.5 V to 60 V (65 V maximum) |
| Output Current | 3.5 A |
| Output Voltage | 1 V to 95% of VIN |
| Quiescent Current in Regulation | 15 µA |
| Switching Frequency Range | 300 kHz to 2.2 MHz |
| Topology | Buck |
| Synchronous Rectifier | Yes |
Key Features
- Integrated synchronous rectification
- Adjustable switching frequency and synchronization to external clock
- Power-good flag, precision enable, and adjustable soft-start (6.3 ms default)
- Voltage tracking capability and pin-selectable FPWM operation
- High-efficiency at light-load architecture (PFM)
- Protection features including cycle-by-cycle current limit, short-circuit protection with hiccup mode, and overtemperature thermal shutdown protection
- Simple PCB layout with best-in-class EMI (CISPR22) and thermal performance
Applications
- Telecommunications infrastructure
- Asset and fleet management systems
- Video surveillance
- Programmable logic controllers
Q & A
- What is the input voltage range of the LM76003RNPR?
The input voltage range is 3.5 V to 60 V, with a maximum of 65 V. - What is the maximum output current of the LM76003RNPR?
The maximum output current is 3.5 A. - What is the output voltage range of the LM76003RNPR?
The output voltage range is 1 V to 95% of the input voltage (VIN). - What is the quiescent current in regulation for the LM76003RNPR?
The quiescent current in regulation is 15 µA. - Does the LM76003RNPR support synchronization to an external clock?
Yes, it supports synchronization to an external clock. - What are the protection features of the LM76003RNPR?
The protection features include cycle-by-cycle current limit, short-circuit protection with hiccup mode, and overtemperature thermal shutdown protection. - What is the switching frequency range of the LM76003RNPR?
The switching frequency range is 300 kHz to 2.2 MHz. - What package type is the LM76003RNPR available in?
The LM76003RNPR is available in a WQFN 30-pin leadless package with wettable flanks. - What are some typical applications of the LM76003RNPR?
Typical applications include telecommunications infrastructure, asset and fleet management systems, video surveillance, and programmable logic controllers. - Does the LM76003RNPR support adjustable soft-start?
Yes, it supports adjustable soft-start with a default time of 6.3 ms.
