Click here for production status of specific part numbers. MAX17524 4.5V to 60V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter General Description Benefits and Features The MAX17524 dual 3A, high-efficiency, high-voltage, Reduces External Components and Total Cost synchronous step-down DC-DC converter with integrated No Schottky - Synchronous Operation high-side MOSFETs operates over an input-voltage range Internal Compensation Components All-Ceramic Capacitors, Compact Layout of 4.5V to 60V. The device can deliver up to 3A on each output and generates output voltages from 0.9V up to Reduces Number of DC-DC Regulators to Stock 90% of V . This device features internal compensation. IN Wide 4.5V to 60V Input Adjustable Output Range from 0.9V up to 90% of The MAX17524 uses peak current-mode control, and can be operated in pulse-width modulation (PWM), pulse-fre- V IN Delivers up to 3A on Each Output Over the Tem- quency modulation (PFM), and discontinuous-conduction mode (DCM) to enable high efficiency under light-load perature Range 100kHz to 1.1MHz Adjustable Frequency with conditions. External Clock Synchronization The feedback-voltage regulation accuracy is accurate to Available in a 32-Pin, 5mm x 5mm TQFN Package within 1.4% over -40C to +125C. The device is avail- Independent Input-Voltage Pins for Each Output able in a 32-pin (5mm x 5mm) Thin QFN (TQFN) pack- age. Simulation models are available. Reduces Power Dissipation Peak Efficiency of 94.4% Applications PFM and DCM Modes Enable Enhanced Light- Industrial Control Power Supplies Load Efficiency Auxiliary Bootstrap Supply (EXTVCC) for Improved General-Purpose Point-of-Load Efficiency Distributed Supply Regulation 5.2A Shutdown Current Base Station Power Supplies Operates Reliably in Adverse Industrial Environments Wall Transformer Regulation Hiccup-Mode Overload Protection Independent Adjustable Soft-Start Pin and Pro- High-Voltage Single-Board Systems grammable EN/UVLO Pin for Each Output Monotonic Startup with Prebiased Output Voltage Built-in Independent Output-Voltage Monitoring with RESET for Each Output Ordering Information appears at end of data sheet. Overtemperature Protection High Industrial -40C to +125C Ambient Operating Temperature Range / -40C to +150C Junction Temperature Range 19-100201 Rev 1 8/19MAX17524 4.5V to 60V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter Absolute Maximum Ratings IN to PGND .......................................................-0.3V to +65V DL to PGND ...........................................-0.3V to V +0.3V CC PGND to SGND..................................................-0.3V to +0.3V LX Total RMS Current ........................................................4.8A EXTVCC to SGND ..............................................-0.3V to +26V Continuous Power Dissipation EN/UVLO to SGND .............................................-0.3V to +65V (Multilayer Board) (T = +70C, A FB , V to SGND ..............................................-0.3V to +6V derate 34.5mW/C above +70C.) ..........................2758.6mW CC RESET , SS , MODE/SYNC , CF , RT to SGND ........-0.3V to Output Short-Circuit Duration ....................................Continuous V +0.3V Operating Temperature Range (Note 1) ..............-40C to 125C CC BST to PGND ....................................................-0.3V to +70V Junction Temperature ......................................................+150C BST to LX ............................................................-0.3V to +6V Storage Temperature Range ............................ -65C to +150C BST to V ........................................................-0.3V to +65V Lead Temperature (soldering, 10s) .................................+300C CC LX to PGND ............................................ -0.3V to V + 0.3V Soldering Temperature (reflow) .......................................+260C IN Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information PACKAGE TYPE: 32 TQFN Package Code T3255+4C Outline Number 21-0140 Land Pattern Number 90-0012 THERMAL RESISTANCE, FOUR-LAYER BOARD (Note 2) Junction to Ambient ( ) 23 C/W JA Junction to Case ( ) 1.7C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Note 1: Junction temperature greater than +125C degrades operating lifetimes. Note 2: Package thermal resistances were obtained using the MAX17524 Evaluation Kit (EV kit). 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