EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX20416 2.2MHz Dual-Output, Low-Voltage Step-Down Converters General Description Benefits and Features The MAX20416 is a high-efficiency, dual-output, low- Multiple Functions for Small Size voltage DC-DC converter. The synchronous step-down Dual Synchronous Buck Converters Up to 3A converters operate from a 3.0V to 5.5V input voltage - Fixed Output Voltage from 0.8V to 3.8V range and provide a 0.8V to 3.8V output voltage range at - Resistor-Adjustable Output Voltage up to 3A. The buck converters achieve 1.5% output error 3.0V to 5.5V Operating Supply Voltage over load, line, and temperature range. 2.2MHz Operation 93% 3% Undervoltage Threshold The IC features a 2.2MHz fixed-frequency pulse-width 107% 3% Overvoltage Threshold modulation (PWM) mode for better noise immunity and Individual EN Inputs and RESET Outputs load-transient response, and a pulse-frequency modula- tion mode (skip) for increased efficiency during light-load High Precision operation. The 2.2MHz frequency operation allows for 1.5% Output-Voltage Accuracy use of all-ceramic capacitors, minimizing the external Good Load-Transient Performance for component footprint. Programmable spread-spectrum- Buck Converters frequency modulation minimizes radiated electromag- Robust for the Automotive Environment netic emissions. Integrated low R switches improve DS(ON) Current-Mode, Forced-PWM, and Skip Operation efficiency at heavy loads and make the layout a much Overtemperature and Short-Circuit Protection simpler task with respect to discrete solutions. 4mm x 4mm 24-Pin TQFN The IC is offered with factory-preset or resistor-adjustable -40C to +125C Automotive Temperature Range output voltages. Additional features include soft-start ramp- ing, overcurrent limiting, and overtemperature protection. The MAX20416 is available in a lead(Pb)-free, 24-pin TQFN package (see the Ordering Information/Selector Ordering Information/Selector Guide appears at end of data Guide for available options). sheet. Typical Operating Circuit EN1 EN2 0.47H SYNC LX1 OUT1 47F 3.3V 10 PGND1 PV 1F GND MAX20416 0.47H LX2 47F OUT2 RESET1, /2 RESET2 PGND2 3.3V PV1, PV2 2x4.7F 19-100005 Rev 2 6/18MAX20416 2.2MHz Dual-Output, Low-Voltage Step-Down Converters Absolute Maximum Ratings PV1, PV2 to PGND ...............................................-0.3V to +6V LX1, LX2 Continuous RMS Current ........................................3A PV to GND...............................................................-0.3V to +6V Output Short-Circuit Duration ....................................Continuous GND to PGND ....................................................-0.3V to +0.3V Continuous Power Dissipation (T = +70C) A EN1, EN2, SYNC to GND ...........................-0.3V to V + 0.3V 24-pin TQFN-EP (derate 30.3mW/C > +70C) ........2222mW PV RESET1, RESET2 to GND .....................................-0.3V to +6V Operating Temperature Range ......................... -40C to +125C OUT1 to PGND1 ....................................... -0.3V to V + 0.3V Storage Temperature Range ............................ -65C to +150C PV1 OUT2 to PGND2 ....................................... -0.3V to V + 0.3V Junction Temperature ......................................................+150C PV2 LX1 to PGND1........................................... -0.3V to V + 0.3V Lead Temperature (soldering, 10s) .................................+300C PV1 LX2 to PGND2........................................... -0.3V to V + 0.3V PV2 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: 24-PIN TQFN Package Code T2444+4C Outline Number 21-0139 Land Pattern Number 90-0022 THERMAL RESISTANCE, SINGLE-LAYER BOARD: Junction-to-Ambient Thermal Resistance ( ) 48C/W JA Junction-to-Case Thermal Resistance ( ) 3C/W JC THERMAL RESISTANCE, FOUR-LAYER BOARD: Junction-to-Ambient Thermal Resistance ( ) 36C/W JA Junction-to-Case Thermal Resistance ( ) 3C/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. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V V = V = 3.3V, V = V = 3.3V. T = T = -40C to +125C, unless otherwise noted. Typical values are at PV = PV1 PV2 EN1 EN2 A J T = +25C under normal conditions, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V Fully operational 3.0 5.5 V IN V Rising 2.7 2.9 UVLOR Undervoltage Lockout (UVLO) V V Falling 2.4 2.6 UVLOF Shutdown Supply Current I EN1, EN2 = low 1 2.2 5 A IN SHDN1 EN1 = high, I = 0mA, skip, OUT1 I 40 80 160 IN1 V 2% above regulation point OUT1 Supply Current A EN2 = high, I = 0mA, skip, OUT2 I 40 80 160 IN2 V 2% above regulation point OUT2 PWM Switching Frequency f Internally generated 2.0 2.2 2.4 MHz SW Spread Spectrum SS Factory option enabled 3 % Maxim Integrated 2 www.maximintegrated.com