EN5322QI

Features

• Revolutionary Integrated Inductor

• Total Solution Footprint as Small as 50 mm2

• 4 mm x 6 mm x 1.1 mm QFN Package

• 4 MHz Fixed Switching Frequency

• High Efficiency, up to 95 %

• Low Ripple Voltage; 8 mVP-P Typical

• 2% Initial VOUT Accuracy with VID Codes

• 2% Initial 0.6 V Feedback Voltage Accuracy

• 2.4 V to 5.5 V Input Voltage Range

• 2 A Continuous Output Current Capability

• Fast Transient Response

• Low Dropout Operation: 100 % Duty Cycle

• Power OK Signal with 5 mA Sink Capability

• Dynamic Voltage Scaling with VID Codes

• 17 µA Typical Shutdown Current

• Under Voltage Lockout, Over Current, Short Circuit, and Thermal Protection

• RoHS Compliant; MSL 3 260 °C Reflow

Applications

• Point of Load Regulation for Low Power Processors, Network Processors, DSPs' FPGAs and ASICs

• Replacement of LDOs

• Noise Sensitive Applications such as A/V and RF

• Computing, Computer Peripherals, Storage, Networking, and Instrumentation

• DSL, STB, DVR, DTV, and iPC

Description

The EN5322 is a high efficiency synchronous buck converter with integrated inductor, PWM controller, MOSFETS, and compensation providing the smallest possible solution size.

The 4 MHz operation allows for the use of tiny MLCC capacitors. It also enables a very wide control loop bandwidth providing excellent transient performance and reduced output impedance. The internal compensation is designed for unconditional stability across all operating conditions.

Three VID output voltage select pins provide seven pre-programmed output voltages along with an option for external resistor divider. Output voltage can be programmed on-the-fly to provide fast, dynamic voltage scaling with smooth transitions between VID programmed output voltages.

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