LTC1878EMS8#PBF

LTC1878 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The 2.65V to 6V 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. Burst Mode operation is inhibited during synchronization or when the SYNC/MODE pin is pulled low, preventing low frequency ripple from interfering with audio circuitry. 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 widely used in application such as cellular telephones, wireless modems, personal information appliances, portable instruments, distributed power systems, battery-powered equipment etc.

• Feedback current is 4nA typical
• Selectable Burst Mode™ operation or pulse skipping mode
• Current mode control for excellent line and load transient response
• Overcurrent and overtemperature protected
• Input DC bias current (Burst Mode operation) is 10µA typ at (VSYNC/MODE = VIN, IOUT = 0A)
• 600mA output current at VIN = 3.3V, shutdown mode draws 1µA max
• ±2% output voltage accuracy, SYNC capture range is 400KHz to 700KHz
• Oscillator frequency is 550KHz typical at (VFB = 0.8V)
• Operating ambient temperature is -40°C to 85°C
• Package style is 8-lead plastic MSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party