UC3526AN

The UC3526AN is an improved-performance Pulse Width Modulator Circuit, intended for direct replacement of equivalent non-\x93A\x94 versions in all applications. Higher frequency operation has been enhanced by several significant improvements including a more accurate oscillator with less minimum dead time, reduced circuit delays (particularly in current limiting) and an improved output stage with negligible cross-conduction current. Additional improvements include the incorporation of a precision, band-gap reference generator, reduced overall supply current and the addition of thermal shutdown protection. Along with these improvements, the UC1526A series retains the protective features of under-voltage lockout, soft-start, digital current limiting, double pulse suppression logic and adjustable dead-time. For ease of interfacing, all digital control ports are TTL compatible with active low logic.

• Reduced supply current
• Precision band-gap reference
• Dual 200mA source/sink outputs
• Minimum output cross-conduction
• Double-pulse suppression logic
• Under-voltage lockout
• Programmable soft-start
• Thermal shutdown
• TTL/CMOS compatible logic ports
• 5V Operation (VIN = VC = VREF = 5.0V)
• Green product and no Sb/Br

Applications

Power Management