The MAX17244ETESB+ is a synchronous buck converter with reduced EMI in 16 pin TQFN package. This high efficiency converter with integrated MOSFETs operates over 3.5V to 36V input voltage range with 42V input transient protection. It can operate in dropout condition by running at 98% duty cycle. The converter delivers up to 2.5A and generates 3.3V fixed output voltage along with ability to program output voltage from 1V to 10V. It uses current mode control architecture. The device can operate in PWM or PFM control schemes. PWM operation provides constant frequency operation at all loads and is useful in applications sensitive to switching frequency. PFM operation disables negative inductor current and additionally skips pulses at light loads for high efficiency. Under light load applications, the external sync pin FSYNC logic input allows device to either operate in PFM mode for reduced current consumption or fixed frequency FPWM mode to eliminate frequency variation to minimize EMI.
Integrated high & low side switch enables synchronous operation for high efficiency & reduced cost
All ceramic capacitor solution allows ultra compact solution size
Cycle by cycle current limit, thermal shutdown with automatic recovery
Low 28µA quiescent current, eliminates external components and reduces total cost
220KHz to 2.2MHz adjustable frequency with external synchronization & low 5µA shutdown current
PGOOD output and high voltage EN input simplify power sequencing
Increases design flexibility and reduced EMI emission with spread spectrum control
180° out of phase clock output at SYNCOUT enables cascaded power supplies for increased power output
Reduces power dissipation and greater than 90% peak efficiency
