Microchip Technology MIC2177
The MIC2177 is a 200 kHz synchronous buck (step-down) switching regulator designed for high-efficiency, battery-powered applications. The MIC2177 operates from a 4.5V to 16.5V input and features internal power MOSFETs that can supply up to 2.5A output current. It can operate with a maximum duty cycle of 100% for use in low-dropout conditions.| Part No. | MIC2177 |
|---|---|
| Datasheet | MIC2177 Download |
| Manufacturer |  Microchip Technology |
| Description | 2.5A Synchronous Buck Regulator |
| Buy | Stock & Price |
FEATURES
● 4.5V to 16.5V Input Voltage Range● Dual Mode Operation for High Efficiency (up to 96%) - PWM Mode for > 200 mA Load Current - Skip Mode for < 200 mA Load Current
● 100 mΩ Internal Power MOSFETs at 12V Input
● 200 kHz Preset Switching Frequency
● Low Quiescent Current - 1.0 mA in PWM Mode - 500 μA in Skip Mode - < 5 μA in Shutdown Mode
● 100% Duty Cycle for Low Dropout Operation
● Current-Mode Control - Simplified Loop Compensation - Superior Line Regulation
● Current Limit
● Thermal Shutdown
● Undervoltage Lockout
APPLICATIONS
● High-Efficiency, Battery-Powered Supplies● Buck (Step-Down) DC-to-DC Converters
● Cellular Telephones
● Laptop Computers
● Handheld Instruments
● Battery Charger
GENERAL DESCRIPTION
It also features a shutdown mode that reduces quiescent current to less than 5 μA. The MIC2177 achieves high efficiency over a wide output current range by switching between PWM and skip mode. Operating mode is automatically selected according to output conditions. Switching frequency is preset to 200 kHz and can be synchronized to an external clock signal of up to 300 kHz.
