FEATURES
s s s s s s s DESCRIPTIO 1.5A, 36V Internal Switch 1.2MHz Switching Frequency Integrated Soft-Start Function Output Voltage Up to 34V Low VCESAT Switch: 300mV at 1.5A (Typ) 8V at 430mA from a 3.3V Input Small 8-Lead MSOP Package U APPLICATIO S s s s s TFT-LCD Bias Supplies GPS Receivers DSL Modems Local Power Supplies The LT®1946 is a fixed frequency step-up DC/DC converter containing an internal 1.5A, 36V switch. Capable of generating 8V at 430mA from a 3.3V input, Loop compensation can be either internal or external, giving the user flexibility in setting loop compensation and allowing optimized transient response with low ESR ceramic output capacitors. Soft-start is controlled with an external capacitor, which determines the input current ramp rate during start-up. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO VIN 3.3V 3 1 L1 4.7µH 6 VIN SHDN LT1946 VC SS CSS 100nF 8 7 FB COMP GND 4 OFF ON C1 2.2µF RC 49.9k CC 470pF 5 SW D1 90 V...
Linear Technology
