Zilog IXD3264A755MR-G

The IXD3263/64 series are 18V operation synchronous step-down DC/DC converter ICs with a built-in high-side/low-side driver transistor. The IXD3263/64 series has an operating voltage range of 3.0V ~ 18.0V and can support 0.5A as an output current with high-efficiency. It is compatible with low ESR capacitors such as ceramic capacitors for the load capacitor (CL). 0.75V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.0V to 15.0V using external resistors (RFB1, RFB2). 500 kHz or 1.2MHz or 2.2MHz can be selected for the switching frequency. In PWM/PFM automatic switchover control, IC can change the control method between PWM and PFM based on the output current requirement and as a result IC can achieve high efficiency over the full load range.

IXD3263/64 has a fixed internal soft start time which is 1.0ms (TYP.), additionally the time can be extended by using an external resistor and capacitor. With the built-in UVLO function, the driver transistor is forced OFF when input voltage goes down to 2.7V or lower. The output state can be monitored using the power good function. Over current protection, short-circuit protection and thermal shutdown are embedded and they secure a safety operation.

• Input Voltage Range: 3~18V (Absolute Max 20V)
• FB Voltage: 0.75V ±1.5%
• Oscillation Frequency: 500kHz, 1.2MHz, 2.2MHz
• Output Current: 0.5A
• Control Methods: PWM/PFM Auto
• Efficiency: 85% @ 12V→5V, 1mA
• PWM control Adjustable by RC
• Over Current Protection: Automatic Recovery (IXD3263B/IXD3264B), Integral Latch Method (IXD3263A/IXD3264A)
• Thermal Shutdown
• Ceramic Capacitor
• SOT - 25 (no Power good)
• USP - 6C
• EU RoHS Compliant, Pb Free

• Hot water supply system
• Recorders, Camcorders
• Refrigerators, Air - conditioners
• Low Power Systems