TM MP2354 2A, 23V, 380KHz Step-Down Converter TM The Future of Analog IC Technology DESCRIPTION FEATURES The MP2354 is a monolithic step down switch 0.18 Internal Power MOSFET Switch mode converter with a built in internal power Stable with Low ESR Output Ceramic MOSFET. It achieves 2A continuous output Capacitors current over a wide input supply range with Up to 95% Efficiency excellent load and line regulation. 2A Output Current Wide 4.75V to 23V Operating Input Range Current mode operation provides fast transient Fixed 380KHz Frequency response and eases loop stabilization. Thermal Shutdown Fault condition protection includes cycle-by-cycle Cycle-by-Cycle Over Current Protection current limiting and thermal shutdown. In Programmable Under Voltage Lockout shutdown mode the regulator draws 20A of Frequency Synchronization Input supply current. Operating Temperature: 40 C to +85C EVALUATION BOARD REFERENCE Available in an 8-Pin SO Package Board Number Dimensions APPLICATIONS EV2354DS-00A 2.3X x 1.4Y x 0.5Z Distributed Power Systems Battery Chargers Pre-Regulator for Linear Regulators MPS and The Future of Analog IC Technology are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs INPUT Output Current 4.75V to 23V 95 10nF 32 90 5.0V VIN BST OPEN 8 4 OUTPUT 85 3.3V AUTOMATIC RUN LX 3.3V / 2A STARTUP 2.5V B230A MP2354 80 1 6 OPEN SYNC FB IF NOT USED 75 GND COMP 5 7 70 3.3nF 65 60 0 0.5 1.0 1.5 2.0 2.5 MP2354 TAC S01 OUTPUT CURRENT (A) MP2354 TAC EC01 MP2354 Rev. 1.4 www.MonolithicPower.com 1 1/21/2020 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY (%)TM MP2354 2A, 23V, 380KHz STEP-DOWN CONVERTER (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) ...................................... 25V IN Switch Voltage (V ) ....................... 1V to +26V LX Bootstrap Voltage (V ) ........................ V + 6V BST LX Feedback Voltage (V ) .................... 0.3 to +6V FB Enable/UVLO Voltage (VRUN) ............ 0.3 to +6V TOP VIEW Comp Voltage (V ) ...................... 0.3 to +6V COMP Sync Voltage (V ) ......................... 0.3 to +6V SYNC SYNC 1 8 RUN Junction Temperature ............................... 150C BST 2 7 COMP Lead Temperature .................................... 260 C VIN 3 6 FB Storage Temperature ............... 65 C to +150 C LX 4 5 GND (2) Recommended Operating Conditions MP2354 PD01-SOIC8 Input Voltage (V ) .......................... 4.75V to 23V IN Operating Temperature ............. 40 C to +85 C (3) Thermal Resistance JA JC SOIC8..................................... 105 ...... 50 ... C/W Part Number* Package Temperature Notes: 1) Exceeding these ratings may damage the device. MP2354DS SOIC8 40 C to +85C 2) The device is not guaranteed to function outside of its For Tape & Reel, add suffix Z (eg. MP2354DSZ) operating conditions. * For Lead Free, add suffix LF (eg. MP2354DSLFZ) 3) Measured on approximately 1 square of 1 oz copper. ELECTRICAL CHARACTERISTICS V = 12V, T = +25 C, unless otherwise noted. IN A Parameter Symbol Condition Min Typ Max Units Feedback Voltage VFB 4.75V V 23V 1.198 1.222 1.246 V IN Upper Switch On Resistance RDS(ON)1 0.18 Lower Switch On Resistance R 10 DS(ON)2 Upper Switch Leakage VRUN = 0V, VLX = 0V 0 10 A (4) Current Limit 2.7 3.4 A Current Sense Transconductance GCS 1.95 A/V Output Current to Comp Pin Voltage Error Amplifier Voltage Gain AVEA 400 V/V Error Amplifier GEA I = 10A 500 700 1000 A/V C Transconductance Oscillator Frequency fS 342 380 418 KHz Short Circuit Frequency V = 0V 35 KHz FB Sync Frequency Sync Drive 0V to 2.7V 445 600 KHz Maximum Duty Cycle D V = 1.0V 90 % MAX FB Minimum Duty Cycle DMIN VFB = 1.5V 0 % MP2354 Rev. 1.4 www.MonolithicPower.com 2 1/21/2020 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved.