MAX17245ETESB+

MAXIM INTEGRATED PRODUCTS  MAX17245ETESB+  DC/DC CONV, SYNC BUCK, 2.2MHZ, TQFN-16 新

The is a 3.3V, 3.5A, synchronous buck converter in 16 pin TQFN package. This converter with 28µA quiescent current and reduced EMI is high-efficiency, integrated MOSFETs operates over a 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 3.5A and generate fixed output voltage along with the ability to program output voltage between 1V to 10V. It uses current mode control architecture. It can operate in pulse width modulation PWM or pulse frequency modulation 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. It is used in distributed supply regulation, wall transformer regulation and general-purpose point-of-load.

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Eliminates external components & reduces total cost, 5µA typ low shutdown current

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Integrated high & low side switch enables synchronous operation for high efficiency, reduced cost

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All-ceramic capacitor solution allows ultra-compact solution size

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220KHz to 2.2MHz adjustable frequency with external synchronization

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Operating temperature range from -40°C to +85°C & reduces power dissipation, >90% peak efficiency

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180° out-of-phase clock output at SYNCOUT enables cascaded power supplies for increased power output

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Fixed output voltage with ±2% accuracy 3.3V or externally resistor adjustable 1V to 10V

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Automatic LX slew-rate adjustment for optimum efficiency across operating frequency range

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PGOOD output & high-voltage EN simplify power sequencing

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42V I/P voltage transient protection, fixed 8ms internal software start reduces input inrush current