LT3579EUFD#PBF

LT3579 is a boost/inverting DC/DC converter with fault protection. The part consists of a 42V primary switch, and a 42V secondary switch that can be tied together for a total current limit of 6A. It is ideal for many local power supply designs. In addition, the device’s secondary switch allows the part to be configured in high voltage, high power charge pump topologies that are very efficient and require fewer components than traditional circuits. This device’s switching frequency range can be set between 200KHz and 2.5MHz. The part may be clocked internally at a frequency set by the resistor from the RT pin to ground, or it may be synchronized to an external clock. It is widely used in application such as local power supply, vacuum fluorescent display (VFD) bias supplies, TFT-LCD bias supplies, automotive engine control unit (ECU) power etc.

• Output short circuit protection
• Wide input voltage range is 2.5V to 16V
• SW1 current limit is 4.2A typical
• User configurable undervoltage lockout
• Easily configurable as a boost, SEPIC, inverting, or flyback converter
• Switch VCESAT is 250mV typical
• Can be synchronized to external clock, can synchronize other switching regulators
• High gain SHDN pin accepts slowly varying input signals
• Operating temperature is -40°C to 125°C
• Packaging style is 20-lead plastic QFN

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