Pololu 9V, 500mA Step-Down Voltage Regulator D24V5F9

he compact (0.4? × 0.5?) D24V5F9 synchronous buck voltage regulator takes an input voltage up to 36 V and efficiently reduces them to 9 V while allowing for a maximum output current of 500 mA. This regulator offers typical efficiencies between 75% and 90%. The pins have a 0.1? spacing, making this board compatible with standard solderless breadboards and perfboards.

Features:

• Input voltage:
• 3 V to 36 V for output voltages of 1.8 V and 2.5 V
• [output voltage + dropout voltage] to 36 V for output voltages of 3.3 V and higher (see below for more information on dropout voltage)
• Fixed 9V output with 4% accuracy
• Maximum output current: 500 mA
• Typical efficiency of 80% to 93%
• 500 kHz switching frequency (when not in power-save mode)
• 200 ?A typical no-load quiescent current
• Integrated over-temperature and over-current shutoff
• Small size: 0.5? × 0.4? × 0.1? (13 mm × 10 mm × 3 mm)