1.2MHZ，26V Step-up DC/DC Converter GENERAL DESCRIPTION The XR3403 is a high frequency, high efficiency DC to DC converter with an integrated 3A, 0.1Ω power switch capable of providing an output voltage up to 26V. The fixed 1.2MHz allows the use of small external inductions and capacitors and provides fast transient response. It integrates Soft start, Comp,. only need few components outside. It can be adjusted SW current limit by one resistor. FEATURES z 2.3V to 6V input voltage Rangel z Efficiency up to 96% z 26V Boost converter with adjusted switch current z 1.2Mhz fixed Switching Frequency z Integrated soft-start z Thermal Shutdown z Under voltage Lockout z SOT23-6 Package APPLICATIONS • Handheld Devices • GPS Receiver • Digital Still Camera • Portable Applications • DSL Modem • PCMCIA Card • TFT LCD Bias Supply XySemi Inc Figure 1. Typical Application Circuit - 1 - www.xysemi.com REV 0.5