EVALUATION KIT AVAILABLE MAX15492 Single-Phase Synchronous MOSFET Driver with Ultra-Low-Power Mode General Description Benefits and Features The MAX15492 is a synchronous half-bridge driver with Extends Battery Life ultra-low-power mode. The device is intended to work Ultra-Low-Power Mode with 4A Supply Current with controller ICs such as the MAX15411, MAX15566/ 2V to 24V Input Voltage Range Selectable Pulse-Skipping Mode MAX15567, or MAX15576/MAX15577 in multiphase CPU core regulators. To provide the best light-load efficiency, 7ns Minimum Guaranteed Dead-Time the controller can place the device into an ultra-low power Allows Operation Up to 3MHz per Phase mode where the supply current is only 4A. 0.7 Low-Side On-Resistance The low-side driver is optimized to drive 3nF capacitive 1.5 High-Side On-Resistance 12ns Propagation Delay loads with 3ns/7ns typical fall/rise times, and the high- side driver with 7ns/14ns typical fall/rise times. Adaptive 4.2V to 5.5V Bias Supply Range (MAX15492) 3V to 5.5V Bias Supply Range (MAX15492B) dead-time control prevents shoot-through currents and maximizes converter efficiency. Integrated Boost Switch Saves Space and Cost The MAX15492 is available in a small, 8-pin (2mm x 2mm) TDFN package with an exposed pad. Applications Intel Ultrabook/Notebook Computers Tablet Computers Ordering Information appears at end of data sheet. Multiphase DC-DC Converters Typical Operating Circuit INPUT (V ) MAX15492 IN C IN PWM PWM DH N H BST C BST L SKIP LX SKIP C OUT DL N L +5V BIAS V GND DD SUPPLY EP Intel is a registered trademark and Ultrabook is a trademark of Intel Corporation. 19-6473 Rev 6 4/20MAX15492 Single-Phase Synchronous MOSFET Driver with Ultra-Low-Power Mode Absolute Maximum Ratings V to GND ............................................................-0.3V to +6V Continuous Power Dissipation DD SKIP to GND ............................................ -0.3V to (V + 0.3V) 8-Pin, 2mm x 2mm TDFN (T822) DD (derate 11.9mW/C above +70C) ...............................953mW PWM to GND ............................................ -0.3V to (V + 0.3V) DD Operating Temperature Range ......................... -40C to +105C DL to GND (Note 1) .................................. -0.3V to (V + 0.3V) DD Junction Temperature ......................................................+150C BST to GND (Note 1) ............................................-0.3V to +30V Storage Temperature Range ............................ -65C to +150C DH to LX (Note 1)....................................-0.3V to (V + 0.3V) BST Lead Temperature (soldering, 10s) .................................+300C BST to V ...........................................................-0.3V to +24V DD Soldering Temperature (reflow) .......................................+260C BST to LX (Note 1) ..................................................-0.3V to +6V 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 = V = 5.0V, T = -40C to +105C, unless otherwise noted. Typical values are at T = +25C.) (Note 2) DD SKIP A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX15492 4.2 5.5 V Input Voltage Range V V DD DD MAX15492B 3 5.5 MAX15492 3.7 4.1 Rising edge, PWM disabled below this level MAX15492B 2.8 2.95 V Undervoltage-Lockout DD V V UVLO Threshold MAX15492 3.2 3.5 3.75 Falling edge, PWM disabled below this level MAX15492B 2.5 2.65 2.78 SKIP = high-Z, after t delay 4 10 SULP-DLY SKIP = V , PWM = high-Z after the DD 80 200 shutdown hold time has expired Quiescent Supply Current (V ) I A DD DD SKIP = GND, PWM = GND, LX = GND 150 300 (after zero crossing) SKIP = GND or V , PWM = V , DD DD 350 700 V = 5V BST DRIVERS t Minimum on-time (Note 3) 30 ON(MIN) Minimum off-time. Required to allow the PWM Pulse Width ns t zero-crossing comparator time to settle to 220 OFF(MIN) the proper state. DL Propagation Delay t PWM high to DL low 12 ns PWM-DL DH Propagation Delay t PWM low to DH low 12 ns PWM-DH T = 0C to +85C 8 12 DL falling to DH A DL-to-DH Dead Time t ns DL-DH rising T = -40C to +105C 7 A T = 0C to +85C 8 12 DH falling to DL A DH-to-DL Dead Time t ns DH-DL rising T = -40C to +105C 7 A Falling, 3nF load 3 DL Transition Time t ns F-DL Rising, 3nF load 7 Maxim Integrated 2 www.maximintegrated.com