XC9515 Series

Dual Channel Synchronous Step-Down DC/DC Converter

Please note that we do not recommend this series for new designs

The XC9515 series is a dual channel synchronous step-down DC/DC converter plus a voltage detector with delay circuit built-in.

The DC/DC converter block incorporates a P-channel 0.35 Ohm (TYP.) driver transistor and a synchronous N-channel 0.35 Ohm (TYP.) switching transistor. By minimizing ON resistance of the built-in transistors, the XC9515 series can deliver
a highly efficient and stable output current up to 800mA per channel and with a high switching frequency of 1MHz, small inductors can be used.

The series has a built-in U.V.L.O. (Under Voltage Lock Out) function, therefore, the internal P-channel driver transistor is forced OFF when input voltage becomes 1.8V or lower. The voltage detector block can be used to set delay time freely
by connecting an external capacitor. With the manual reset function, the series can output a reset signal at any time.

Features:

DC/DC Block

• Input Voltage: 2.5V ~ 5.0V
• Output Voltage:
• Output 1: 1.2V ~ 4.0V
• Output 2: 1.2V ~ 4.0V
• Switching Frequency: 1MHz
• Output Current: 800mA / Channel 
• PWM Switching Control

Detector Block

• Detect Voltage Range: 2.0V ~ 5.5V
• Delay Time: Set Externally
• Output: N-Channel Open Drain
   

Package: QFN-20