105020073 Seeed Studio

MP2155 High Efficiency Single Inductor Buck-Boost Converter with 2.2A Switches The Future of Analog IC Technology DESCRIPTION FEATURES High Efficiency up to 95%. The MP2155 is a highly efficient, low quiescent Load Disconnect During Shutdown current Buck-Boost converter, which operates Input Voltage Range: 2V to 5.5V from input voltage above, below and equal to Adjustable Output Voltage from 1.5V to 5V the output voltage. The device provides power 3.3V/1A Load Capability from 2.7V-to-5.5V solution for products powered by a one-cell Vin Lithium-Ion or multi-cell alkaline battery 1MHz Switching Frequency applications where the output voltage is within Pulse Skipping Mode at Light Load battery voltage range. Typical 80 A Quiescent Current The MP2155 uses a current mode, fixed Internal Loop Compensation for Fast frequency PWM control for optimal stability and Response transient response. The fixed 1MHz switching Internal Soft Start frequency and integrated low R N-channel DS(ON) OTP, Hiccup SCP and P-channel MOSFETs minimize the solution Available in Small 3x3mm QFN10 Package footprint while maintaining high efficiency. To ensure the longest battery life MP2155 has APPLICATIONS an optional pulse skipping mode that reduces Battery-Powered Products switching frequency under light load conditions. Portable Instruments For other low noise applications where variable Tablet PCs frequency power save mode may cause POS Systems interference, the logic control input MODE pin GSM/GPRS forces fixed frequency PWM operation under all System Controls load conditions. All MPS parts are lead-free and adhere to the RoHS directive. For MPS green The MP2155 operates with input voltage from status, please visit MPS website under Quality Assurance. 2V to 5.5V to provide adjustable output voltage MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. (1.5V to 5V). With an input from 2.7V to 5.5V it can supply a maximum 1A current to load at 3.3V output voltage. The MP2155 is available in small QFN10-3x3mm package. TYPICAL APPLICATION MP2155 Rev. 1.0 www.MonolithicPower.com 1 1/26/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. MP2155 HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 2.2A SWITCHES ORDERING INFORMATION Part Number* Package Top Marking MP2155GQ* QFN10 (3X3) ADR * For Tape & Reel, add suffix Z (e.g. MP2155GQZ) PACKAGE REFERENCE TOP VIEW VOUT 1 FB 10 SW2 9 AGND 2 PGND 3 EP 8 VCC MODE/ SW147 SYNC 5 6 VIN EN (1) (5) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC IN to GND .....................................0.3V to 6.5V 3X3 QFN10............................. 50...... 12... C/W SW1/2 to GND ......0.3V(-2V for <10ns) to 6.5V Notes: All Other Pins...............................0.3V to 6.5 V 1) Exceeding these ratings may damage the device Junction Temperature...............................150C 2) The maximum allowable power dissipation is a function of the maximum junction temperature T (MAX), the junction-to- J Lead Temperature ....................................260C ambient thermal resistance , and the ambient temperature JA (3) Continuous Power Dissipation (T = +25C) T . The maximum allowable continuous power dissipation at A A any ambient temperature is calculated by P (MAX) = (T D J QFN10 3X3mm.......................................... 2.5W (MAX)-T )/ . Exceeding the maximum allowable power A JA Storage Temperature............... -65C to +150 C dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal (4) shutdown circuitry protects the device from permanent Recommended Operating Conditions damage. Supply Voltage V .............................2V to 5.5V IN 3) The device is not guaranteed to function outside of its operating conditions. Output Voltage V ...........................1.5V to 5V OUT 4) Measured on JESD51-7, 4-layer PCB. Operating Junct. Temp. (T ).... 40 C to +125 C J MP2155 Rev. 1.0 www.MonolithicPower.com 2 1/26/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved.