XC9267 Series

36V Operation 0.6A Synchronous Step-Down DC/DC Converters

The XC9267 series are 36V operation synchronous step-down DC/DC converter ICs with a built-in P-channel MOS driver transistor and N-channel MOS switching transistor.

The XC9267 series has operating voltage range of 3.0V~36.0V and high-efficiency power supply up to an output current of 0.6A. Low ESR capacitors such as ceramic capacitors can be used for the load capacitor (CL).
A 0.75V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.0V to 25.0V using external resistors (RFB1, RFB2). 1.2MHz or 2.2MHz can be selected for the switching frequency.

The soft-start time is internally set to 2.0ms (TYP.), but can be adjusted to set a longer time using an external resistor and capacitor.
With the built-in UVLO function, the driver transistor is forced OFF when input voltage becomes 2.7V or lower.
The output state can be monitored using the power good function.
Internal protection circuits include over current protection, short-circuit protection, and thermal shutdown circuits to enable safe use.

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Jun 14, 2018
Product News
XC9267 Series Step-Down Synchronous DC/DC Converters with 36V Input, 600mA

Typical Application Circuit


Input Voltage 3.0V~36V(Absolute Max 40V)
Output Voltage 1.0V~25V
FB Voltage 0.75V±1.5%
Oscillation Frequency 1.2MHz,2.2MHz
Output Current 0.6A
Control Method PWM cotrol
Soft-start Time Adjustable by RC
Protection Circuits Over Current Protection(Automatic Recovery)
Thermal Shutdown
Short-circuit Protection
Low ESR Ceramic Capacitor Ceramic Capacitor