General Description
The XC9119D01A series is 1MHz, PWM controlled step-up DC/DC converter, designed to allow the use of ceramic
capacitors. With a built-in 2.0Ω switching transistor, the XC9119D01A series can easily provide a step-up operation by using
only a coil, a diode, a capacitor, and a resistor, connected externally.
Since output voltage up to 19.5V (Maximum Lx operating voltage: 20V) can be derived with reference voltage supply of 1.0V
(±2.0%) and external components, the series can easily supply high voltage for various general-purpose power supplies, LCD
panels and organic EL displays.
With a high switching frequency of 1.0MHz, a low profile and small board area solution can be achieved using a chip coil and
an ultra small ceramic output capacitor.
With the current limit function (400mA (TYP.): VDD=3.6V), a peak current, which flows through built-in driver transistors can be
limited. Soft-start time can be adjusted by external resistors and capacitors. The stand-by function enables the output to
be turned off (CE ’L’), that is, the supply current will be less than 1.0μA.
Features
- Operating Voltage Range : 2.5V ~ 6.0V
- Output Voltage Range : Up to 19.5V externally set-up
- Oscillation Frequency : 1.0MHz±20%
- ON Resistance : 2.0Ω (VDD: 3.6V, VDS: 0.4V)
- Efficiency : 86%
Applications
- Organic electroluminescene display (OELD)
- Power supplies for LCD panels
- Various general-purpose power supplies
Typical Application Circuit
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