G5108

Global Mixed-mode Technology G5108 Low-Noise Step-up DC-DC Converter Features „ 90% Efficiency „ Adjustable Output from VIN to 20V „ 0.2Ω, 24V Power MOSFET „ Cycle-by-Cycle 2A Current Limit „ 2.5V to 5.5V Input Range „ 600kHz/1.2MHz Switching Frequency „ MSOP-8, TDFN3X3-8 Package Applications „ LCD Displays „ Portable Applications „ Hand-Held Devices General Description The G5108 boost converter in corporate high-performance, current-mode, frequency selectable pulse width modulation (PWM) circuitry with a built-in 0.2Ω n-channel MOSFET to provide a highly efficient regulator. High switching frequency allows easy filtering and faster loop performance. An external compensation pin provides the user flexibility in determining loop dynamics, allowing the use of small, low ESR ceramic output capacitors. The device can produce an output voltage as high as 20V. User programmed soft-start with an external capacitor determines the input current ramp rate. The G5108 is available ...