LT1533CS#PBF

LT1533 is a new class of switching regulator designed to reduce conducted and radiated electromagnetic interference (EMI). Ultralow noise and EMI are achieved by providing user control of the output switch slew rates. Voltage and current slew rates can be independently programmed to optimize switcher harmonic content versus efficiency. It utilizes a dual output switch current mode architecture optimized for low noise topologies. The IC includes two 1A power switches along with all necessary oscillator, control and protection circuitry. Unique error amp circuitry can regulate both positive and negative voltages. The internal oscillator may be synchronized to an external clock for more accurate placement of switching harmonics. It is used in application such as precision instrumentation systems, isolated supplies for industrial automation, medical instruments, wireless communications, single board data acquisition systems etc.

• Low switching harmonic content
• Independent control of switch voltage and current slew rates
• Regulates positive and negative voltages
• Maximum switch frequency is 250KHz typical
• Synchronization frequency range is 375KHz maximum at (fOSC = 250KHz)
• Easily synchronized to external clock
• Wide input voltage range is 2.7V to 23V
• Low shutdown current is 12µA typical
• Outputs can be forced to 50% duty cycle for unregulated applications
• Operating junction temperature is 0°C to 100°C, package style is 16-lead NSOIC

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