NOT RECOMMENDED FOR NEW DESIGN CONTACT US Data Sheet Dual 1A, 1.5MHz PWM Step-down DC-DC Converter with OVP AUR9717 Features General Description Dual Channel High Efficiency Buck Power The AUR9717 is a high efficiency step-down DC- Converter DC voltage converter. The chip operation is Low Quiescent Current optimized using constant frequency, peak-current Output Current: 1A mode architecture with built-in synchronous power Adjustable Output Voltage from 1V to 3.3V MOSFET switchers and internal compensators to Wide Operating Voltage Range: 2.5V to 5.5V reduce external part counts. It is automatically Built-in Power Switchers for Synchronous switching between the normal PWM mode and LDO Rectification with High Efficiency mode to offer improved system power efficiency Feedback Voltage: 600mV covering a wide range of loading conditions. 1.5MHz Constant Frequency Operation Automatic PWM/LDO Mode Switching Control The oscillator and timing capacitors are all built-in Thermal Shutdown Protection providing an internal switching frequency of 1.5MHz Low Drop-out Operation at 100% Duty Cycle that allows the use of small surface mount inductors No Schottky Diode Required and capacitors for portable product implementations. Internal Input Over Voltage Protection Additional features including Soft Start (SS), Under For automotive applications requiring specific Voltage Lock Out (UVLO), Input Over Voltage change control (i.e. parts qualified to AEC- Protection (IOVP) and Thermal Shutdown Detection Q100/101/200, PPAP capable, and manufactured in (TSD) are integrated to provide reliable product IATF 16949 certified facilities), please contact us or applications. your local Diodes representative. Data Sheet Dual 1A, 1.5MHz PWM Step-down DC-DC Converter with OVP AUR9717 Pin Configuration D Package (WDFN-33-10) Pin 1 Mark 1 10 EN1 LX1 2 9 FB1 GND 3 8 VIN2 VIN1 4 7 FB2 GND 5 6 LX2 EN2 Figure 2. Pin Configuration of AUR9717 (Top View) Pin Description Pin Number Pin Name Function 1 EN1 Enable signal input of channel 1, active high Feedback voltage of channel 1 2 FB1 Power supply input of channel 2 3 VIN2 This pin is the GND reference for the NMOSFET power stage. It 4, 9 GND must be connected to the system ground 5 LX2 Connection from power MOSFET of channel 2 to inductor 6 EN2 Enable signal input of channel 2, active high Feedback voltage of channel 2 7 FB2 Power supply input of channel 1 8 VIN1 10 LX1 Connection from power MOSFET of channel 1 to inductor AUR9717 April 2020 Document number: DS42569 Rev. 1 - 3 Diodes Incorporated 2