MCP1601 Series

750kHz 500mA Synchronous PFM/PWM Buck Regulator w/Frequency Synchronization

Catalog

750kHz 500mA Synchronous PFM/PWM Buck Regulator w/Frequency Synchronization

Part	Mounting Type	Supplier Device Package	Voltage - Input (Min) [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Output (Min/Fixed)	Output Type	Current - Output	Output Configuration	Voltage - Input (Max) [Max]	Synchronous Rectifier	Number of Outputs	Package / Case	Package / Case [custom]	Package / Case	Function	Topology	Frequency - Switching	Voltage - Output (Max) [Max]
Microchip Technology MCP1601-I/MS	Surface Mount	8-MSOP	2.7 V	-40 °C	125 ¯C	0.9 V	Adjustable	500 mA	Positive	5.5 V		1	8-MSOP 8-TSSOP	0.118 in	3 mm	Step-Down	Buck	750 kHz	5.5 V
Microchip Technology MCP1601T-I/MS	Surface Mount	8-MSOP	2.7 V	-40 °C	125 ¯C	0.9 V	Adjustable	500 mA	Positive	5.5 V		1	8-MSOP 8-TSSOP	0.118 in	3 mm	Step-Down	Buck	750 kHz	5.5 V

Catalog

750kHz 500mA Synchronous PFM/PWM Buck Regulator w/Frequency Synchronization

Key Features

• * 3 operating modes (PWM, PFM, LDO) with automatic switching between modes

• * Shutdown mode to minimize current drain during stand-bye conditions

• * Oscillator Synchronization to 1.0MHz PWM mode

• * Integrated Buck and Synchronous switches

• * Complete ceramic capacitor solution

• * Integrated UVLO, Soft-start, and Over temperature protection

• * Short circuit protection

• * -40°C to +85°C operation

Description

The MCP1601 is a synchronous Buck (step-down) switching regulator that can continuously supply 500mA of load current. This DC/DC converter can provide output voltages of 0.9V to Vin with an operating efficiency that can exceed 92%. Although ideally suited for a single Li-Ion, or 2 to 3 cell NiCd, NiMH, or alkaline battery operation, the input range of 2.7V to 5.5V is also useful for converting bus voltages to standard system requirements.