EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX17019 High-Input-Voltage Quad-Output Controller General Description Benefits and Features The MAX17019 is a high-input-voltage quad-output con- Fixed-Frequency, Current-Mode Controllers troller (up to 38V). The MAX17019 provides a compact, 5.5V to 38V Input Range (Step-Down) low-cost controller capable of providing four independent 1x Step-Down Controller regulatorsa main stage, a 3A internal stepdown, a P-P 5A internal step-down, and a 2A source/sink linear 1x Internal 5A Step-Down Regulator P-P P-P regulator. The input voltage is up to 38V. 1x Internal 3A Step-Down Regulator P-P The internal switching regulators include 5V synchronous 1x 2A Source/Sink Linear Regulator with Dynamic MOSFETs that can be powered directly from a single Li+ REFIN cell or from the main 3.3V/5V power stages. Finally, the Internal BST Diodes linear regulator is capable of sourcing and sinking 2A to Internal 5V 50mA Linear Regulator support DDR termination requirements or to generate a fixed output voltage. Fault ProtectionUndervoltage, Overvoltage, Thermal, Peak Current Limit The step-down converters use a peak current-mode, fixed-frequency control schemean easy to imple- Independent Enable Inputs and Power-Good Outputs ment architecture that does not sacrifice fast-transient Voltage-Controlled Soft-Start response. This architecture also supports peak current- High-Impedance Shutdown limit protection and pulse-skipping operation to maintain high efficiency under light-load conditions. 10A (typ) Shutdown Current Separate enable inputs and independent open-drain power-good outputs allow flexible power sequencing. A soft-start function gradually ramps up the output voltage to reduce the inrush current. Disabled regulators enter high- Ordering Information appears at end of data sheet. impedance states to avoid negative output voltage created by rapidly discharging the output through the low-side MOSFET. The MAX17019 also includes output undervolt- age, output overvoltage, and thermal-fault protection. The MAX17019 is available in a 48-pin, 6mm x 6mm thin QFN package. Applications Embedded Control Systems Set-Top Boxes 19-4225 Rev 2 5/18MAX17019 High-Input-Voltage Quad-Output Controller Absolute Maximum Ratings INLDO, SHDN to GND............................................-0.3V to +43V VTTR to GND...........................................-0.3V to (V + 0.3V) BYP LDO5, INA, V , V to GND.................................-0.3V to +6V LXB, LXC to GND....................................-1.0V to (V + 0.3V) DD CC INBC DHA to LXA.............................................-0.3V to (V + 0.3V) BSTB to GND...................................(V - 0.3V) to (V + 6V) BSTA DD LXB ONA, ONB, ONC, OND to GND...............................-0.3V to +6V BSTC to GND..................................(V - 0.3V) to (V + 6V) DD LXC POKA, POKB, POKC, POKD to GND.........-0.3V to (V + 0.3V) BSTA to GND...................................(V - 0.3V) to (V + 6V) CC DD LXA REF, REFIND, FREQ, UP/DN, REF Short-Circuit Current......................................................1mA SYNC to GND.......................................-0.3V to (V + 0.3V) Continuous Power Dissipation (T = +70C) CC A FBA, FBB, FBC, FBD to GND.....................-0.3V to (V + 0.3V) TQFN (derate 37mW/C above +70C) ...........................2.9W CC BYP to GND...........................................-0.3V to (V + 0.3V) (Multilayer Board) LDO5 CSPA, CSNA to GND .................................-0.3V to (V + 0.3V) Operating Temperature Range ..........................-40C to +105C CC DLA to GND................................................-0.3V to (V + 0.3V) Junction Temperature.......................................................+150C DD INBC, IND to GND....................................................-0.3V to +6V Storage Temperature Range ..............................-65C to +150C OUTD to GND...........................................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s)...................................+300C IND 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: 48-PIN TQFN Package Code T4866+2 Outline Number 21-0141 Land Pattern Number 90-0007 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. Electrical Characteristics (T = 0C to +85C) A (Standard Application Circuit, V = 12V, V = V = V = V = V = V = V = 5V, V = 1.8V, V = V INLDO INA INBC DD CC BYP CSPA CSNA IND SHDN ONA = V = V = V = 5V, I = I = I = no load, FREQ = GND, UP/DN = V , T = 0C to +85C, unless otherwise ONB ONC OND REF LDO5 OUTD CC A noted. Typical values are at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage Range UP/DN = LDO5, INLDO, INA = LDO5 5.5 38 V UP/DN = LDO5, INA = V , rising edge, CC INA Undervoltage Threshold V 4.0 4.2 4.4 V INA(UVLO) hysteresis = 160mV INBC Input Voltage Range 2.3 5.5 V SUPPLY CURRENTS V Shutdown Supply Current I V = 5.5V to 38V, SHDN = GND 10 15 A INLDO IN(SHDN) INLDO V = 5.5V to 38V, ON = GND, INLDO V Suspend Supply Current I 50 80 A INLDO IN(SUS) SHDN = INLDO SHDN = ONA = ONB = ONC = OND = V Shutdown Supply Current 0.1 1 A CC GND, T = +25C A SHDN = ONA = ONB = ONC = OND = V Shutdown Supply Current 0.1 1 A DD GND, T = +25C A SHDN = ONA = ONB = ONC = OND = INA Shutdown Current I 7 10 A INA GND, UP/DN = V CC Maxim Integrated 2 www.maximintegrated.com