DC to DC Power Supplies (Converters)
Synchronous Step-Down DC/DC Converters feature manual reset.
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Press Release Summary:
Series XC9515 consists of 2 channel synchronous step-down DC/DC converters and voltage detector with delay circuit built-in. DC/DC converter block incorporates P-channel 0.35 W driver transistor and synchronous N-channel 0.35 W switching transistor. By minimizing ON resistance of transistors, XC9515 series delivers stable output current up to 800 mA. Voltage detector block offers manual reset function, so units can output reset signal at any time.
Original Press Release:
2 Channel Synchronous Step-Down DC/DC Converter with Manual Reset
The XC9515 series consists of 2 channel synchronous step-down DC/DC converters and a voltage detector with delay circuit built-in.
The DC/DC converter block incorporates a P-channel 0.35 W (TYP.) driver transistor and a synchronous N-channel 0.35 W (TYP.) switching transistor. By minimizing ON resistance of the built-in transistors, the XC9515 series can deliver highly efficient and a stable output current up to 800 mA.
With high switching frequencies of 1MHz, a choice of small inductor is possible.
The series has a built-in UVLO (under-voltage lock-out) function, therefore, the internal P-channel driver transistor is forced OFF when input voltage becomes 1.8 V or lower (for XC9515A, 2.7 V or lower).
The voltage detector block can be set delay time freely by connecting an external capacitor. With the manual reset function, the series can output a reset signal at any time.
DC/DC Block
Input Voltage Range: 2.5-5.5 V
Output Voltage: VOUT1=1.2-4.0 V/VOUT2=1.2-4.0 V(Accuracy ±2%)
Oscillation Frequency: 1 MHz(Accuracy ±15%)
High Efficiency: 95% (VIN=5 V,VOUT=3.3 V)
Output Current: 800 mA
Control: PWM control
Protection Circuits: Thermal Shutdown / Integral Latch (Over Current Limit)/ Short Protection Circuit
Output Capacitor: Ceramic Capacitor Compatible
Package: QFN-20
Voltage Detector (VD) Block
Detect Voltage Range: 2.0-5.5 V(Accuracy ±2%)
Delay Time: 173ms (When Cd=0.1 µF is connected)
Output Configuration: N-channel open drain
