The LMR10510XMF regulator is a monolithic, high frequency, PWM step-down DC/DC converter ina 5-pin SOT-23 and a 6-pin WSON package. It provides all the active functions to provide localDC/DC conversion with fast transient response and accurate regulation in the smallest possible PCBarea. The LMR10510XMF is internally compensated, so it is simple to use and requires few externalcomponents. The ability to drive 1-A loads with an internal 130-m PMOS switch results in the bestpower density available. The world-class control circuitry allows on-times as low as 30 ns, thussupporting exceptionally high frequency conversion over the entire 3-V to 5.5-V input operatingrange down to the minimum output voltage of 0.6 V.
The LMR10510XMF is a constant frequency PWM buck regulator IC that delivers a 1-A loadcurrent. The regulator has a preset switching frequency of 1.6 MHz or 3 MHz. This high frequencyallows the LMR10510XMF to operate with small surface mount capacitors and inductors, resulting in aDC/DC converter that requires a minimum amount of board space. Even though the operating frequencyis high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring anultra-low stand-by current of 30 nA. The LMR10510XMF utilizes current-mode control and internalcompensation to provide high-performance regulation over a wide range of operating conditions.Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulsecurrent limit, thermal shutdown, and output overvoltage protection.
Feature
- 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 IQ, 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
