EVALUATION KIT AVAILABLE MAX17509 4.5V16V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Resistor Programmability General Description Features and Benefits The MAX17509 integrates two 3A internal switch step-down Reduces Number of DC-DC Regulators in Inventory regulators with programmable features. The device can Output Voltage (0.904V to 3.782V and 4.756V to be configured as two single-phase independent, 3A power 5.048V with 20mV Resolution) Configurable Two Independent Outputs (3A/3A) or supplies or as a dual-phase, single-output 6A power supply. The device operates from 4.5V to 16V input and a Dual-Phase Single Output (6A) generates independently adjustable output voltage in the Mitigate Noise Concerns and EMI ranges of 0.904V to 3.782V and 4.756V to 5.048V, with Adjustable Switching Frequency with Selectable 2% system accuracy. 0/180 Phase Shift External Frequency Synchronization This device provides maximum flexibility to the end-user Adjustable Switching Slew Rate by allowing to choose multiple programmable options by Passes EN55022 (CISPR22) Class-B Radiated connecting resistors to the configuration pins. Two key and Conducted EMI Standard highlights of the device are the self-configured compen- Ease of System Design sation for any output voltage and the ability to program All Ceramic Capacitors Solution the slew rate of LX switching nodes to mitigate noise Auto-Configured Internal Compensation concerns. In noise-sensitive applications, such as high- Selectable Hiccup or Brickwall Mode speed multi-gigabit transceivers in FPGAs, RF, and audio Adjustable Soft-Start Rise/Fall Time with Soft Stop benefit from this unique slew rate control. SYNC input is Modes and Prebias Startup provided for synchronized operation of multiple devices -40C to +125C Operation with system clocks. Reliable Operation MAX17509 offers output overvoltage (OV) and Robust Fault Protections (VIN UVLO, UV/OV, UC/ undervoltage (UV) protection, as well as overcurrent OC, OT) (OC) and undercurrent (UC) protection with a selectable Power Good hiccup/latch option. It operates over the -40C to +125C temperature range, with thermal sensing and shutdown Application Circuit provided for overtemperature (OT) protection. The device MAX17509 is available in a 32-pin 5mm x 5mm TQFN package. PGOOD1, 2 EN1, 2 AVCC SYNC Applications CVCC VIN VCC FPGA and DSP Core Power IN1 CAVCC CIN1 Industrial Control Equipment AVCC BST1 CBST1 Multiple Point-of-Load (POL) Power Supplies RCOARSE1 VOUT1 L1 COARSE1 LX1 Base Station Point-of-Load Regulator RFINE1 OUT1 FINE1 COUT1 Ordering Information appears at end of data sheet. PGND1 RSS1 SS1 VIN IN2 RCOARSE2 CIN2 COARSE2 BST2 RFINE2 CBST2 FINE2 L2 VOUT2 LX2 RSS2 SS2 OUT2 COUT2 RMODE PGND2 MODE SGND EP 19-7051 Rev 0 2/15MAX17509 4.516V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Resistor Programmability Absolute Maximum Ratings IN to PGND .........................................................-0.3V to 22V PGND to SGND....................................................-0.3V to 0.3V BST to PGND ......................................................-0.3V to 28V EP to SGND .........................................................-0.3V to +0.3V BST to LX ..............................................................-0.3V to 6V Operating Temperature Range ..........................-40C to +125C BST to VCC ...........................................................-0.3V to 22V Junction Temperature ......................................................+150C LX to PGND ....... -0.3V to the lower of +22V or (VIN + 0.3V) Storage Temperature Range .............................-65C to +160C VCC to SGND ......... -0.3V to the lower of +6V or (VIN1 + 0.3V) Lead Temperature (soldering, 10s) .................................+300C AVCC to SGND ....... -0.3V to the lower of +6V or (VIN1 + 0.3V) Soldering Temperature (reflow) .......................................+260C OUT , EN , PGOOD , SYNC, COARSE , FINE , SS , MODE to SGND ....................................................-0.3V to 6V Package Thermal Characteristics (Note 2) 32 TQFN T3255+4 Junction-to-Ambient Thermal Resistance ( ) JA Continuous Power Dissipation (T = +70C) 32 TQFN ......................................................................29C/W A 32 TQFN (derate 34.5 mW/C above +70C) Junction-to-Case Thermal Resistance ( ) JC (multilayer board) ...................................................2758.6mW 32 TQFN .....................................................................1.7C/W Note 1: 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. 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 (V = 10V, V = 3.3V, CVIN = 1F, CAVCC = 1F, CVCC = 2.2F, CBST = 0.1F, T = T = -40C to +125C, with typical IN OUT A J value at T = 25C, unless otherwise stated) (See Typical Application Circuits) (Note 1). A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT SUPPLY VIN IN1-2 Voltage Range VIN RANGE 4.5 16 V IN1 Standby Current IIN1 STBY EN1-2 = SGND (shutdown) 1 1.9 mA IN2 Standby Current IIN2 STBY EN1-2 = SGND (shutdown) 10 20 A VIN UVLO R Rising 4.0 4.2 4.4 V IN1-2 Undervoltage Lockout VIN UVLO F Falling 3.2 3.4 3.6 V VIN UVLO R Rising 5.8 6.0 6.2 V 5VOUT IN1-2 Undervoltage Lockout for V > 4.75V OUT VIN UVLO F Falling 4.1 4.3 4.5 V 5VOUT ENABLES EN Rising Threshold EN TH R 1242 1262 1287 mV EN Threshold Hysteresis EN TH HYS 250 mV EN Input Leakage Current EN ILEAK V = 5V, T = 25C -100 0 100 nA EN A LDO V Output Voltage Range VCC RANGE 6V < V < 16V 4.5 V CC IN1 V Output Voltage (Dropout) VCC DROP V = 4.5 V, I = 20mA 4.3 V CC IN1 VCC V Current Capability I VCC V = 4.3V, V = 6V 50 mA CC CC IN1 INTERNAL CHIP INPUT SUPPLY AVCC TH R Rising 3.9 V AVCC UVLO AVCC TH F Falling 3.2 V Maxim Integrated 2 www.maximintegrated.com