Overview
The LMR10510XMFX/NOPB is a high-performance, monolithic, PWM step-down DC/DC converter produced by Texas Instruments. This regulator is available in 5-pin SOT-23 and 6-pin WSON packages, making it ideal for space-constrained applications. It provides all the active functions necessary for local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. The LMR10510 utilizes current-mode control and internal compensation, ensuring high-performance regulation over a wide range of operating conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3 to 5.5 | V |
| Output Voltage Range | 0.6 to 4.5 | V |
| Output Current | Up to 1 | A |
| Switching Frequencies | 1.6 MHz (LMR10510X), 3 MHz (LMR10510Y) | MHz |
| Shutdown IQ | 30 nA (Typical) | nA |
| Package Types | SOT-23 (5-pin), WSON (6-pin) | |
| Operating Temperature Range | -40 to 125 | °C |
| Switch On Resistance | 130 mΩ (SOT-23), 150 mΩ (WSON) | mΩ |
| Thermal Shutdown Temperature | 165°C | °C |
Key Features
- Input Voltage Range of 3 V to 5.5 V
- Output Voltage Range of 0.6 V to 4.5 V
- Output Current up to 1 A
- High switching frequencies: 1.6 MHz (LMR10510X) and 3 MHz (LMR10510Y)
- Low shutdown IQ of 30 nA typical
- Internal soft-start circuitry to reduce inrush current
- Internally compensated for simplicity and minimal external components
- Current-mode PWM operation
- Thermal shutdown and output overvoltage protection
- Pulse-by-pulse current limit
- Tiny overall solution reducing system cost
Applications
- Point-of-Load conversions from 3.3-V and 5-V rails
- Space-constrained applications
- Battery-powered equipment
- Industrial distributed power applications
- Power meters
- Portable hand-held instruments
Q & A
- What is the input voltage range of the LMR10510?
The input voltage range is from 3 V to 5.5 V.
- What are the available switching frequencies for the LMR10510?
The switching frequencies are 1.6 MHz for the LMR10510X and 3 MHz for the LMR10510Y.
- What is the maximum output current of the LMR10510?
The maximum output current is up to 1 A.
- What are the package types available for the LMR10510?
The LMR10510 is available in 5-pin SOT-23 and 6-pin WSON packages.
- What is the typical shutdown IQ of the LMR10510?
The typical shutdown IQ is 30 nA.
- Does the LMR10510 have thermal shutdown protection?
- What is the purpose of the internal soft-start circuitry in the LMR10510?
The internal soft-start circuitry reduces inrush current during startup by forcing the output voltage to increase at a controlled rate.
- What types of protection does the LMR10510 offer?
The LMR10510 offers output overvoltage protection, pulse-by-pulse current limit, and thermal shutdown protection.
- How does the LMR10510 achieve high efficiency?
The LMR10510 achieves high efficiency through its high switching frequencies, internal compensation, and the use of small surface mount capacitors and inductors, allowing efficiencies up to 93%.
- What are some common applications for the LMR10510?
Common applications include point-of-load conversions, space-constrained applications, battery-powered equipment, industrial distributed power applications, power meters, and portable hand-held instruments.
