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
电源管理
(EN)
