MP2358 2A, 23V, 370KHz Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP2358 is a monolithic step-down switch 2A Output Current with QFN Package mode converter with a built-in internal power 0.18 Internal Power MOSFET Switch MOSFET. It achieves 2A continuous output Stable with Low ESR Output Ceramic current over a wide input supply range with Capacitors excellent load and line regulation. 93% Efficiency 23 A Shutdown Mode Current mode operation provides fast transient Fixed 370KHz 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 Wide 4.75V to 23V Operating Input Range shutdown mode the regulator draws 23A of Output Adjustable from 0.92V to 16V supply current. Programmable soft-start Programmable Under Voltage Lockout minimizes the inrush supply current and the Available in QFN10 (3mm x 3mm) and SO8 output overshoot at initial startup. Packages The MP2358 requires a minimum number of APPLICATIONS readily available standard external components. Distributed Power Systems EVALUATION BOARD REFERENCE Battery Charger Board Number Dimensions Pre-Regulator for Linear Regulators EV2358DS-00A 2.3 x 1.4 x 0.5 MPS and The Future of Analog IC Technology are Trademarks of Monolithic EV2358DQ-00A 2.0 x 1.3 x 0.4 Power Systems, Inc. TYPICAL APPLICATION Efficiency vs INPUT Output Current 4.75V - 23V 95 C5 10nF 90 5.0V IN BS V OPEN = AUTOMATIC OUT 85 3.3V EN SW STARTUP 3.3V/2A D1 2.5V MP2358 B220A 80 SS FB 75 GND COMP C3 70 C4 3.9nF C6 10nF 65 OPEN 60 0 0.5 1.0 1.5 2.0 2.5 MP2358 TAC S01 OUTPUT CURRENT (A) MP2358 EC01 MP2358 Rev. 1.4 www.MonolithicPower.com 1 2/26/2020 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY (%)MP2358 2A, 23V, 370KHz STEP-DOWN CONVERTER PACKAGE REFERENCE TOP VIEW TOP VIEW NC 1 10 SS BS 1 8 SS BS 2 9 EN IN 2 7 EN NC 3 8 COMP SW 3 6 COMP IN 4 7 FB GND 4 5 FB SW 5 6 GND MP2358 PD02 SOIC8 EXPOSED PAD MP2358 PD01-QFN10 ON BACKSIDE Part Number* Package Temperature Part Number** Package Temperature QFN10 MP2358DQ MP2358DS SOIC8 40 C to +85C 40 C to +85C (3mm x 3mm) For Tape & Reel, add suffix Z (eg. MP2358DQZ) For Tape & Reel, add suffix Z (eg. MP2358DSZ) * ** For Lead Free, add suffix LF (eg. MP2358DQLFZ) For Lead Free, add suffix LF (eg. MP2358DSLFZ) (1) (2) ABSOLUTE MAXIMUM RATINGS Recommended Operating Conditions Supply Voltage (V ) ...................................... 25V Supply Voltage (V ) ....................... 4.75V to 23V IN IN Switch Node Voltage (V ) ........................... 26V SW Operating Temperature ................. 40C to +85 C Bootstrap Voltage (V ) ........................ V + 6V BS SW (3) Thermal Resistance JA JC Feedback Voltage (V ) ................. 0.3V to +6V FB QFN10 (3x3) ........................... 50 ....... 12 ... C/W Enable/UVLO Voltage (V )........... 0.3V to +6V EN Comp Voltage (V ) ................... 0.3V to +6V SOIC8..................................... 105 ...... 50 ... C/W COMP SS Voltage (V ) ............................ 0.3V to +6V SS Notes: Junction Temperature ............................. +150 C 1) Exceeding these ratings may damage the device. 2) The device is not guaranteed to function outside of its Lead Temperature .................................. +260 C operating conditions. Storage Temperature ............... 65C to +150 C 3) Measured on approximately 1 square of 1 oz copper. ELECTRICAL CHARACTERISTICS V = 12V, T = +25 C, unless otherwise noted. IN A Parameter SymbolCondition Min Typ Max Units Feedback Voltage V 0.892 0.920 0.948 V FB 4.75V VIN 23V Upper Switch On Resistance RDS(ON)1 0.18 Lower Switch On Resistance RDS(ON)2 10 Upper Switch Leakage VEN = 0V, VSW = 0V 0 10 A (4) Current Limit 2.8 3.4 A Current Sense Transconductance GCS 1.95 A/V Output Current to Comp Pin Voltage Error Amplifier Voltage Gain A 400 V/V VEA Error Amplifier Transconductance GEA IC = 10A 550 830 1150 A/V Oscillator Frequency fS 370 KHz Short Circuit Frequency VFB = 0V 240 KHz Soft-Start Pin Equivalent 9 k Output Resistance MP2358 Rev. 1.4 www.MonolithicPower.com 2 2/26/2020 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved.