MP28301GG-Z

MP28301 Ultra-Low 500nA IQ, Wide Input 2-5.5V, 700mA Step-Down Regulator Plus 300nAIQ, The Future of Analog IC Technology 2-5.5V Input, 100mA LDO in a 2x2mm QFN DESCRIPTION FEATURES The MP28301 is a monolithic powermanagement unit containing a 700mA, highefficiency, step-down, switching converter and a 100mA LDO regulator. The nA quiescent current provides extremely high efficiency when the load current is in the µA range. With the minimum input voltage as low as 2V, the MP28301 allows the system to operate directly from the battery.  The constant-on-time (COT) control scheme provides fast transient response, high light-load efficiency, and requires minimal capacitance. The regulation is made tight by integrating an error amplifier to correct the output voltage. A 100mA LDO regulator provides easy system configuration with a clean output voltage.  The CTRL pins control the on/off and output voltage selection functions. Fault protection features include under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown. The MP28301 requires a minimal number of readily available, standard, external components and is available in a small QFN-12 (2mmx2mm) package.  700mA Buck Switcher o Ultra-Low IQ: 500nA o Wide 2.0V to 5.5V Operating Input Range o Seven Selectable Output Voltages o Up to 700mA Output Current o 1.5MHz Switching Frequency in Continuous Conduction Mode (CCM) o 100% Duty Cycle in Dropout o 0.25Ω and 0.25Ω Internal Power MOSFET Switches o Cycle-by-Cycle Over-Current Protection (OCP) o Short-Circuit Protection (SCP) with Hiccup Mode 100mA LDO o Ultra-Low IQ: 300nA o 2.0V to 5.5V Operating Input Range o Three Selectable Output Voltages o Over-Temperature Protection (OTP) Available in a QFN-12 (2mmx2mm)Package APPLICATIONS     Wearables IoT Devices Portable Instruments Battery-Powered Devices All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs. Load Current VOUT=1.8V 100 EFFICIENCY (%) 90 80 70 VIN=2V VIN=2.5V VIN=3.0V VIN=3.6V VIN=4.2V VIN=5.0V 60 50 40 30 0.001 0.1 10 1000 IOUT (mA) MP28301 Rev. 1.1 6/12/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 1 MP28301 – ULTRA-LOW IQ, STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* MP28301GG Package QFN-12 (2mmx2mm) Top Marking See Below * For Tape & Reel, add suffix –Z (e.g. MP28301GG–Z) TOP MARKING EG: Product code of MP28301GG Y: Year code LLL: Lot number PACKAGE REFERENCE TOP VIEW QFN-12 (2mmx2mm) MP28301 Rev. 1.1 6/12/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 MP28301 – ULTRA-LOW IQ, STEP-DOWN CONVERTER ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance (4) Supply voltage (VIN1/2) .................................. 6V VSW1 ...................................................................... -0.3V (-5V for