Overview
The LMR10515YMFE/NOPB is a high-frequency, PWM step-down DC/DC converter produced by Texas Instruments. This monolithic regulator is designed to provide efficient and reliable local DC/DC conversion in a compact package. It is available in both SOT-23 and WSON packages, making it suitable for space-constrained applications. The LMR10515 supports an input voltage range of 3V to 5.5V and can deliver an output voltage from 0.6V to 4.5V with a maximum output current of 1.5A. Its high switching frequencies of 1.6 MHz and 3 MHz enable the use of small surface mount inductors and chip capacitors, optimizing system cost and size.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3V to 5.5V |
| Output Voltage Range | 0.6V to 4.5V |
| Maximum Output Current | 1.5A |
| Switching Frequency | 1.6 MHz (LMR10515X), 3 MHz (LMR10515Y) |
| Package Type | SOT-23 (5-pin), WSON (6-pin) |
| Operating Temperature Range | -40°C to 125°C |
| Quiescent Current (Switching) | 3.3 mA to 6.5 mA |
| Quiescent Current (Shutdown) | 30 nA |
| Switch On Resistance | 130 mΩ (SOT-23), 150 mΩ (WSON) |
| Thermal Shutdown Temperature | 165°C |
Key Features
- High-frequency PWM operation with switching frequencies of 1.6 MHz and 3 MHz, allowing for small component sizes.
- Internal compensation and current-mode control for high-performance regulation.
- Internal soft-start circuitry to reduce inrush current.
- Pulse-by-pulse current limit and thermal shutdown for protection.
- Output over-voltage protection.
- Ultra-low standby current of 30 nA during shutdown.
- Enable pin for external shutdown control.
- High efficiency up to 93% achievable.
Applications
- Point-of-load conversions from 3.3V and 5V 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 LMR10515?
The input voltage range is from 3V to 5.5V.
- What is the maximum output current of the LMR10515?
The maximum output current is 1.5A.
- What are the switching frequencies of the LMR10515?
The switching frequencies are 1.6 MHz and 3 MHz.
- What are the available package types for the LMR10515?
The available package types are SOT-23 (5-pin) and WSON (6-pin).
- What is the operating temperature range of the LMR10515?
The operating temperature range is from -40°C to 125°C.
- What is the quiescent current during shutdown?
The quiescent current during shutdown is 30 nA.
- Does the LMR10515 have internal protection features?
Yes, it includes pulse-by-pulse current limit, thermal shutdown, and output over-voltage protection.
- Can the LMR10515 be used in space-constrained applications?
Yes, it is designed for space-constrained applications due to its small package size.
- What is the efficiency of the LMR10515?
The LMR10515 can achieve efficiencies up to 93%.
- Is the LMR10515 easy to use?
Yes, it is internally compensated and requires few external components, making it simple to use.
