Overview
The LMR10515YMF/NOPB is a high-frequency, PWM step-down DC/DC converter produced by Texas Instruments. This regulator is designed to provide efficient and compact local DC/DC conversion with fast transient response and accurate regulation. It is available in both SOT-23 and WSON packages, making it suitable for space-constrained applications. The device features an internal 130-mΩ PMOS switch, allowing it to drive loads up to 1.5 A, and it operates over an input voltage range of 3 V to 5.5 V, with an output voltage range of 0.6 V to 4.5 V.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 3 | - | 5.5 | V |
| Output Voltage Range | 0.6 | - | 4.5 | V |
| Output Current | - | - | 1.5 | A |
| Switching Frequency (LMR10515X) | 1.2 | 1.6 | 1.95 | MHz |
| Switching Frequency (LMR10515Y) | 2.25 | 3.0 | 3.75 | MHz |
| Shutdown IQ | - | 30 | - | nA |
| RDS(ON) Switch On Resistance (WSON Package) | - | 150 | - | mΩ |
| RDS(ON) Switch On Resistance (SOT-23 Package) | - | 130 | 195 | mΩ |
| Thermal Shutdown Temperature | - | - | 165 | °C |
Key Features
- Internal Soft-Start to reduce inrush current
- Internally Compensated for simplicity and minimal external components
- Current-Mode PWM Operation for high-performance regulation
- Thermal Shutdown and Output Overvoltage Protection for reliability
- Pulse-by-Pulse Current Limit for protection
- Ultra-Low Shutdown IQ of 30 nA
- High Efficiency up to 93%
- Compact SOT-23 and WSON packaging
- Support for small surface mount inductors and chip capacitors
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 LMR10515YMF/NOPB?
The input voltage range is from 3 V to 5.5 V.
- What is the maximum output current of the LMR10515YMF/NOPB?
The maximum output current is up to 1.5 A.
- What are the switching frequencies available for the LMR10515YMF/NOPB?
The switching frequencies are 1.6 MHz for the LMR10515X and 3 MHz for the LMR10515Y.
- What is the typical shutdown current of the LMR10515YMF/NOPB?
The typical shutdown current is 30 nA.
- Does the LMR10515YMF/NOPB have thermal shutdown protection?
- What types of packaging are available for the LMR10515YMF/NOPB?
- What is the efficiency of the LMR10515YMF/NOPB?
- Does the LMR10515YMF/NOPB have internal soft-start circuitry?
- What are some common applications for the LMR10515YMF/NOPB?
- How can I design a custom application using the LMR10515YMF/NOPB?
