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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UC2526AM |
|
Boost
Buck Flyback Forward Full-Bridge Half-Bridge Push-Pull |
Voltage | 600 | 7/6.8 | 50 | 0.2 |
Adjustable Switching Frequency
Dead Time Control Error Amplifier Multi-topology Soft Start Synchronization Pin |
Military | -25 to 85 | CDIP | 18 | 18CDIP: 160 mm2: 6.92 x 23.1 (CDIP | 18) |
