MIC33153 4 MHz 1.2A Internal Inductor PWM Buck Regulator with HyperLight Load and Power Good Features General Description Internal Inductor The MIC33153 is a high-efficiency 4 MHz 1.2A synchronous buck regulator with an internal inductor, Simplifies Design to Two External Capacitors HyperLight Load mode, Power Good (PG) output Input Voltage: 2.7V to 5.5V indicator, and programmable soft-start. HyperLight Output Voltage: Fixed or Adjustable (0.62V to Load provides very high efficiency at light loads and 3.6V) ultra-fast transient response which makes the Up to 1.2A Output Current MIC33153 perfectly suited for supplying processor Up to 93% Peak Efficiency core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage throughout 85% Typical Efficiency at 1 mA the entire load range with the use of small output Power Good (PG) Output capacitors. Programmable Soft-Start The MIC33153 is designed so that only two external 2 2 A Typical Quiescent Current capacitors as small as 2.2 F are needed for stability. 4 MHz PWM Operation in Continuous Mode This gives the MIC33153 the ease of use of an LDO Ultra-Fast Transient Response with the efficiency of a HyperLight Load DC converter. Low Ripple Output Voltage The MIC33153 achieves efficiency in HyperLight -3 5 mV Ripple in HyperLight Load Mode Load mode as high as 85% at 1 mA, with a very low PP quiescent current of 22 A. At higher loads, the -7 mV Output Voltage Ripple in Full PWM MIC33153 provides a constant switching frequency up Mode to 4 MHz. 0.01 A Shutdown Current The MIC33153 is available in 14-pin 3.0 mm x 3.5 mm Thermal Shutdown and Current Limit Protection TDFN package with an operating junction temperature 14-pin 3.0 x 3.5 x 1.1 mm TDFN Package range from 40C to +125C. 40C to +125C Junction Temperature Range Applications Solid State Drives (SSD) Mobile Handsets Portable Media/MP3 Players Portable Navigation Devices (GPS) WiFi/WiMax/WiBro Modules Wireless LAN Cards Portable Applications 2019 Microchip Technology Inc. 1DS20006223A-page MIC33153 Typical Application Circuits Fixed Output MIC33153 J Adjustable Output MIC33153 J Package Types 14-Pin 3.0 mm x 3.5 mm TDFN 14-Pin 3.0 mm x 3.5 mm TDFN Fixed (Top View) Adjustable (Top View) DS20006223A-page 2 2019 Microchip Technology Inc.