MIC2205YML-TR Microchip

MIC2205 2 MHz PWM Synchronous Buck Regulator with LDO Standby Mode Feature General Description 2.7 to 5.5V Supply Voltage The MIC2205 is a high efficiency 2 MHz PWM synchronous buck (step-down) regulator that features Light Load LDO Mode an LDO standby mode that draws only 18 A of -1 8 A Quiescent Current quiescent current. The MIC2205 allows an ultra-low - Low Noise, 75 V RMS noise, small size, and high efficiency solution for 2 MHz PWM Mode portable power applications. - Output Current to 600 mA In PWM mode, the MIC2205 operates with a constant - >95% Efficiency frequency 2 MHz PWM control. Under light load - 100% Maximum Duty Cycle conditions, such as in system sleep or standby modes, the PWM switching operation can be disabled to Adjustable Output Voltage Option Down to 1V reduce switching losses. In this light load mode, the - Fixed Output Voltage Options Available LDO maintains the output voltage and draws only Ultra-Fast Transient Response 18 A of quiescent current. The LDO mode of Stable with 1 F Ceramic Output Capacitor operation saves battery life while not introducing Fully Integrated MOSFET Switches spurious noise and high ripple as experienced with Micropower Shutdown pulse skipping or bursting mode regulators. Thermal Shutdown and Current Limit Protection The MIC2205 operates from 2.7V to 5.5V input and Pb-Free 3 mm x 3 mm VDFN Package features internal power MOSFETs that can supply up to 600 mA output current in PWM mode. It can operate 40C to +125C Junction Temperature Range with a maximum duty cycle of 100% for use in low Applications dropout conditions. Cellular Phones The MIC2205 is available in a 3 mm x 3 mm VDFN-10L PDAs package with an operating junction temperature range from 40C to +125C. USB Peripherals Package Type MIC2205 VDFN-10 (ML) 2019 Microchip Technology Inc. DS20006177A-page 1MIC2205 Functional Block Diagram Typical Application MIC2205 2.2H V 8 9 IN VIN SW V OUT 2.7V to 5.5V 4 2 AVIN LDO 6 R1 C3 C1 EN 100k 100pF 1F 7 5 LOWQ FB LowQ C4 3 R2 2.2F BIAS C2 125k 0.1F PGND AGND 10 1 GND GND DS20006177A-page 2 2019 Microchip Technology Inc.