The UC1526 is a high performance monolithic pulse width modulator circuit designed for fixed-frequency switching regulators and other power control applications. Included in an 18-pin dual-in-line package are a temperature compensated voltage reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse metering and setting logic, and two low impedance power drivers. Also included are protective features such as soft-start and under-voltage lockout, digital current limiting, double pulse inhibit, a data latch for single pulse metering, adjustable deadtime, and provision for symmetry correction inputs. For ease of interface, all digital control ports are TTL and B-series CMOS compatible. Active LOW logic design allows wired-OR connections for maximum flexibility. This versatile device can be used to implement single-ended or push-pull switching regulators of either polarity, both transformerless and transformer coupled. The UC1526 is characterized for operation over the full military temperature range of -55°C to +125°C. The UC2526 is characterized for operation from -25°C to +85°C, and the UC3526 is characterized for operation from 0° to +70°C.
|Part number||Order||Topology||Control method||Frequency (Max) (kHz)||UVLO thresholds on/off (V)||Duty cycle (Max) (%)||Gate drive (Typ) (A)||Features||Rating||Operating temperature range (C)||Package Group||Package size: mm2:W x L (PKG)|
Adjustable Switching Frequency
Dead Time Control
|Military||0 to 70||CDIP | 18||18CDIP: 160 mm2: 6.92 x 23.1 (CDIP | 18)|