The LMR10515 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. With a minimum of external components, the LMR10515 is easy to use. The ability to drive
1.5-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 30ns, 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. The LMR10515 is internally compensated, so it is simple to use and requires few
external components. Switching frequency is internally set to 1.6 MHz, or 3 MHz, allowing the use
of extremely small surface mount inductors and chip capacitors. Even though the operating frequency
is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an
ultra-low stand-by current of 30 nA. The LMR10515 utilizes current-mode control and internal
compensation 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-pulse
current limit, thermal shutdown, and output over-voltage protection.The LMR10515 is internally compensated, so it is simple to use and requires few external
components. Switching frequency is internally set to 1.6 MHz, or 3 MHz, allowing the use of
extremely small surface mount inductors and chip capacitors. Even though the operating frequency is
high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an
ultra-low stand-by current of 30 nA. The LMR10515 utilizes current-mode control and internal
compensation 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-pulse
current limit, thermal shutdown, and output overvoltage protection.
