LTC3405AES6#TRPBF

LTC3405A is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The 2.5V to 5.5V input voltage range makes the device ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. It is specifically designed to work well with ceramic output capacitors, achieving very low output voltage ripple and a small PCB footprint. The internal synchronous switch increases efficiency and eliminates the need for An external schottky diode. Low output voltages are easily supported with the 0.8V feedback reference voltage. It is used in application such as cellular telephones, personal information appliances, wireless and DSL modems, digital still cameras, MP3 players, portable instruments etc.

• Input DC bias current (Burst Mode®) is 20µA typical at (VFB = 0.83V, Mode = 0V, ILOAD = 0A)
• 300mA output current at VIN = 3V
• Input voltage range is 2.5V to 5.5V
• Shutdown mode draws 1µA maximum supply current
• Current mode operation for excellent line and load transient response
• Overtemperature protected
• Regulated feedback voltage is 0.8V typical
• Operating temperature is -40°C to 85°C
• Package style is 6-lead plastic TSOT-23

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