MCP1603/B/L
2.0 MHz, 500 mA Synchronous Buck Regulator
Features General Description Over 90% Typical Efficiency Output Current Up To 500 mA Low PFM Quiescent Current = 45 ВµA, typical
(MCP1603/L) Low Shutdown Current = 0.1 ВµA, typical Adjustable Output Voltage:
-0.8V to 4.5V Fixed Output Voltage:
-1.2V, 1.5V, 1.8V, 2.5V, 3.3V (MCP1603/L)
-1.8V, 3.3V (MCP1603B) 2.0 MHz Fixed-Frequency PWM (Heavy Load) Automatic PWM-to-PFM Mode Transition
(MCP1603/L) PWM Mode Only Option (MCP1603B) 100% Duty Cycle Operation Internally Compensated Undervoltage Lockout (UVLO) Overtemperature Protection Space Saving Packages:
-5-Lead TSOT, Two Pinout Types (MCP1603/L)
-8-Lead 2 x 3 DFN The MCP1603/B/L is a high-efficiency, fully-integrated
500 mA synchronous buck regulator whose 2.7V to
5.5V input voltage range makes it ideally suited for
applications powered from 1-cell Li-Ion or 2-cell/3-cell
NiMH/NiCd batteries. Applications Cellular Telephones
Portable Computers
Organizers / PDAs
USB Powered Devices
Digital Cameras
Portable Equipment
+5V or +3.3V Distributed Systems
Headsets пѓЈ 2007-2012 Microchip Technology Inc. At heavy loads, the MCP1603/B/L operates in the
2.0 MHz fixed frequency pulse-width modulation
(PWM) mode, which provides a low noise, low-output …