LMR10510 5.5-VIN, 1-A Step-Down Voltage Regulator in SOT-23 and WSON Packages

1 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
• 1.6-MHz (LMR10510X) and 3-MHz (LMR10510Y) Switching Frequencies
• Low Shutdown I_Q, 30 nA Typical
• Internal Soft Start
• Internally Compensated
• Current-Mode PWM Operation
• Thermal Shutdown
• SOT-23 (2.92 × 2.84 × 1 mm) and WSON
  (3 × 3 × 0.8 mm) Packaging
• Tiny Overall Solution Reduces System Cost
• Create a custom design using the LMR10510 with the WEBENCH® Power Designer

2 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

3 Description

The LMR10510 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 5-pin SOT-23 and a 6-pin WSON package. It provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. The LMR10510 is internally compensated, so it is simple to use and requires few external components. The ability to drive 1-A loads with an internal 130-mΩ PMOS switch results in the best power density available. The world-class control circuitry allows on-times as low as 30 ns, thus supporting exceptionally high frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.6 V.

1. For all available packages, see the orderable addendum at the end of the data sheet.

space

space

space