LT1946EMS8E#PBF

LT1946 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, the LT1946 is ideal for large TFT-LCD panel power supplies. The LT1946 switches at 1.2MHz, 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 widely used in application such as TFT-LCD bias supplies, GPS receivers, DSL modems, local power supplies etc.

• Integrated soft-start function
• Output voltage upto 34V
• Low VCESAT switch is typical 300mV at 1.5A
• Feedback voltage is 1.250V typical
• Quiescent current is 3.2mA typical at (VSHDN = 2.5V, not Switching)
• Quiescent current in shutdown is 1µA maximum 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