LT1946AEMS8E#PBF

LT1946 is a fixed frequency step-up DC/DC converter containing an internal 1.5A, 36V switch. Capable of generating 12V at 430mA from a 5V input, this device is ideal for powering large TFT-LCD panels. This device switches at 2.7MHz, allowing the use of tiny, low profile inductors and low value ceramic capacitors. 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. It is used in application such as TFT-LCD bias supplies, GPS receivers, DSL modems, local power supply etc.

• Integrated soft-start function
• Adjustable output from VIN to 35V
• Low VCESAT switch is 300mV typical at 1.5A
• Quiescent current is 3.6mA typical
• Feedback voltage is 1.25V typical
• Quiescent current in shutdown is 1µA typical at (VSHDN = 0V, VIN = 3V)
• Switch current limit is 2.1A typical
• Operating temperature is -40°C to 85°C
• Package style is 8-lead plastic MSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party