General Description
The MAX16903 is a small, synchronous buck converter with integrated high-side and low-side switches. The device is designed to deliver 1A with input voltages from +3.5V to +28V while using only 25μA quiescent current at no load. Voltage quality can be monitored by observing the PGOOD signal. The MAX16903 can operate in dropout by running at 97% duty cycle, making it ideal for automotive and industrial applications.

FEATUREs
♦ Wide +3.5V to +28V Input Voltage Range
♦ Tolerates Input Voltage Transients to +42V
♦ 1A Minimum Output Current with Overcurrent Protection
♦ Fixed Output Voltages (see the Selector Guide and contact the factory for all available trimmed output voltage options)
♦ 2.1MHz Switching Frequency with 3 Modes of Operation
    25µA Ultra-Low Quiescent Current Skip Mode
    Forced Fixed-Frequency Operation
    External Frequency Synchronization
♦ Optional Spread-Spectrum Frequency Modulation
♦ Power-Good Output
♦ Enable-Pin Compatible from +3.3V Logic Level to +42V
♦ Thermal Shutdown Protection
♦ -40°C to +125°C Automotive Temperature Range
♦ 10-Pin TDFN-EP or 16-Pin TSSOP-EP Packages
♦ AEC-Q100 Qualified

APPLICATIONs
    Automotive
    Industrial
    Military
    High-Voltage Input-Power DC-DC Applications