Features: ` Single-Phase Synchronous Drivers
` Up to 24V (max) Input Voltage
` 0.1A (typ) Quiescent Current in Shutdown Over Temperature
` 0.5/1.0/0.7/1.3 ROUT Drivers
` 12ns (typ) Propagation Delay
` 11ns (typ) Rise/Fall Times with 3000pF Load
` Adaptive Dead Time and User-Programmable Delay Mode
` Up to 1.2MHz Operation with MAX Package
` Enable Function
` TTL- and CMOS-Compatible Logic Inputs
` Available in a Space-Saving Thin DFN PackageApplication·Multiphase Buck Converters
·Voltage Regulator Modules (VRMs)
·Processor-Core Voltage Regulators
·Desktops, Notebooks, and Servers
·Switching Power SuppliesPinout
SpecificationsVCC to GND..............................................................-0.3V to +7V
PWM, EN, DL, DLY to GND..........................-0.3V to (VCC + 0.3V)
BST to PGND..........................................................-0.3V to +35V
LX to PGND ..............................................................-1V to +28V
DH to PGND..............................................-0.3V to (VBST + 0.3V)
DH, BST to LX..........................................................-0.3V to +7V
DH and DL Continuous Current.....................................±200mA
Continuous Power Dissipation (TA = +70°C)
10-Pin MAX (derate 5.6mW/°C above +70°C) ......444.4mW
10-Pin TDFN (derate 24.4mW/°C above +70°C) ......1951mW
Operating Temperature Range .........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range ..........................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
DescriptionThe MAX8552 highly integrated monolithic MOSFET driver is capable of driving a pair of power MOSFETs in single or multiphase synchronous buck-converter applications that provide up to 30A output current per phase. The MAX8552 simplifies PC board layout in multiphase systems, particularly three phases and higher. High input voltages up to 24V allow the MAX8552 to be used in desktop, notebook, and server applications. Each MOSFET driver is capable of driving 3000pF capacitive loads with only 12ns propagation delay and 11ns (typ) rise and fall times, making the MAX8552 ideal for high-frequency applications.
User-programmable break-before-make circuitry prevents shoot-through currents, maximizing converter efficiency. An enable input allows total driver shutdown (<1A typ) for power-sensitive portable applications. The PWM control input is compatible with TTL and CMOS logic levels. The MAX8552, along with the MAX8524 or the MAX8525 multiphase controllers, provides flexible 2-, 3-, 4-, 6-, or 8-phase CPU core-voltage supplies.
The MAX8552 is available in space-saving 10-pin TDFN and MAX packages and is specified for -40°C to +85°C operation.
MAX8552 Data Sheet
