MAX17017 19-4121 Rev 2 6/09 Quad-Output Controller for Low-Power Architecture General Description Features Fixed-Frequency, Current-Mode Controllers The MAX17017 is a quad-output controller for ultra- mobile portable computers (UMPCs) that rely on a low- 5.5V to 28V Input Range (Step-Down) or 3V to 5V power architecture. The MAX17017 provides a compact, Input Range (Step-Up) low-cost controller capable of providing four indepen- 1x Step-Up or Step-Down Controller dent regulatorsa main stage, a 3A internal step- P-P 1x Internal 5A Step-Down Regulator P-P down, a 5A internal step-down, and a 2A source/sink P-P linear regulator. 1x Internal 3A Step-Down Regulator P-P 1x 2A Source/Sink Linear Regulator with Dynamic The main regulator can be configured as either a step- REFIN down converter (for 2 to 4 Li+ cell applications) or as a step-up converter (for 1 Li+ cell applications). The inter- Internal BST Diodes nal switching regulators include 5V synchronous Internal 5V, 50mA Linear Regulator MOSFETs that can be powered directly from a single Li+ Fault ProtectionUndervoltage, Overvoltage, cell or from the main 3.3V/5V power stages. Finally, the Thermal, Peak Current Limit linear regulator is capable of sourcing and sinking 2A to Independent Enable Inputs and Power-Good support DDR termination requirements or to generate a Outputs fixed output voltage. Voltage-Controlled Soft-Start The step-down converters use a peak current-mode, fixed-frequency control schemean easy to implement High-Impedance Shutdown architecture that does not sacrifice fast-transient 10A (typ) Shutdown Current response. This architecture also supports peak current- Ordering Information limit protection and pulse-skipping operation to maintain high efficiency under light-load conditions. PART TEMP RANGE PIN-PACKAGE Separate enable inputs and independent open-drain MAX17017GTM+ -40C to +105C 48 TQFN-EP* power-good outputs allow flexible power sequencing. A +Denotes a lead(Pb)-free/RoHS-compliant package. soft-start function gradually ramps up the output volt- *EP = Exposed pad. age to reduce the inrush current. Disabled regulators enter high-impedance states to avoid negative output Pin Configuration voltage created by rapidly discharging the output TOP VIEW through the low-side MOSFET. The MAX17017 also includes output undervoltage, output overvoltage, and thermal-fault protection. 36 35 34 33 32 31 30 29 28 27 26 25 The MAX17017 is available in a 48-pin, 6mm x 6mm ONB 37 24 CSPA thin QFN package. SYNC 38 23 CSNA Applications ONA 39 22 AGND 1-to-4 Li+ Cell Battery-Powered Devices INBC 40 21 REF INBC 41 20 FREQ Low-Power Architecture MAX17017 INBC 42 19 UP/DN Ultra-Mobile PC (UMPC) INBC 43 18 INA Portable Gaming V 44 17 V DD CC Notebook and Subnotebook Computers POKD 45 16 BYP PDAs and Mobile Communicators OND 46 15 LDO5 ONC 47 14 INLDO EXPOSED PAD = GND FBC 48 13 SHDN + 1 2 3 4 5 6 7 8 9 10 11 12 THIN QFN Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE POKC FBB BSTC POKB LXC BSTB LXC LXB LXC LXB LXC LXB OUTD DLA OUTD BSTA IND LXA FBD DHA VTTR POKA REFIND FBAQuad-Output Controller for Low-Power Architecture ABSOLUTE MAXIMUM RATINGS INLDO, SHDN to GND............................................-0.3V to +28V VTTR to GND.............................................-0.3V to (V + 0.3V) BYP LXB, LXC to GND ....................................-1.0V to (V + 0.3V) LDO5, INA, V , V to GND..................................-0.3V to +6V INBC DD CC DHA to LXA .............................................-0.3V to (V + 0.3V) BSTB to GND ....................................(V - 0.3V) to (V + 6V) DD LXB BSTA BSTC to GND....................................(V - 0.3V) to (V + 6V) ONA, ONB, ONC, OND to GND...............................-0.3V to +6V DD LXC BSTA to GND ....................................(V - 0.3V) to (V + 6V) POKA, POKB, POKC, POKD to GND.........-0.3V to (V + 0.3V) DD LXA CC REF, REFIND, FREQ, UP/DN, REF Short-Circuit Current......................................................1mA Continuous Power Dissipation (T = +70C) SYNC to GND ........................................-0.3V to (V + 0.3V) A CC 2 FBA, FBB, FBC, FBD to GND.....................-0.3V to (V + 0.3V) Multilayer PCB: 48-Pin 6mm x 6mm TQFN CC (T4866-2 derated 37mW/C above +70C) ....................2.9W BYP to GND ............................................-0.3V to (V + 0.3V) LDO5 Operating Temperature Range .........................-40C to +105C CSPA, CSNA to GND .................................-0.3V to (V + 0.3V) CC DLA to GND................................................-0.3V to (V + 0.3V) Junction Temperature......................................................+150C DD Storage Temperature Range .............................-65C to +150C INBC, IND to GND....................................................-0.3V to +6V 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. ELECTRICAL CHARACTERISTICS (Circuit of Figure 1 (step-down), V = 12V, V = V = V = V = V = V = V = 5V, V = 1.8V, V = INLDO INA INBC DD CC BYP CSPA CSNA IND SHDN V = V = V = V = 5V, I = I = I = no load, FREQ = GND, UP/DN = V , T = 0C to +85C, unless other- ONA ONB ONC OND REF LDO5 OUTD CC A wise noted. Typical values are at T = +25C.) (Note 1) A T = 0C to +85C A PARAMETER SYMBOL CONDITIONS UNITS MIN TYP MAX UP/DN = GND (step-up), INA 3.0 5.0 Input Voltage Range V UP/DN = LDO5 (step-down), INLDO, 5.5 24 INA = LDO5 UP/DN = GND (step-up), INA = INLDO, 2.5 2.7 2.9 rising edge hysteresis = 100mV INA Undervoltage Threshold V V INA(UVLO) UP/DN = LDO5 (step-down), INA = V , CC 4.0 4.2 4.4 rising edge, hysteresis = 160mV INBC Input Voltage Range 2.3 5.5 V Minimum Step-Up Startup UP/DN = GND (step-up) 2.9 3.0 V Voltage SUPPLY CURRENTS V Shutdown Supply Current I V = 5.5V to 26V, SHDN = GND 10 15 A INLDO IN(SHDN) IN V = 5.5V to 26V, 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 710 A INA GND, UP/DN = V CC ONA = V , ONB = ONC = OND = GND CC V Supply Current CC does not include switching losses, 210 300 A Main Step-Down Only measured from V CC 2 MAX17017