SG3526DW Datasheet

PMIC - Voltage Regulators - DC DC Switching Controllers


The SG3526DW 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 steering logic,and two low impedance power drivers. Also included are protective features such as soft-start and undervoltage 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 SG3526DW is characterized for operation over the full military ambient junction temperature range of -55°C to +150°C. The SG3526DW is characterized for operation from -25°C to +150°C, and the SG3526DW is characterized for operation from 0°C to +125°C. SG3526DW Features • 8 to 35 volt operation• 5V reference trimmed to ±1%• 1Hz to 350KHz oscillator range• Dual 100mA source/sink outputs• Digital current limiting• Double pulse suppression• Programmable deadtime• Undervoltage lockout• Single pulse metering• Programmable soft-start• Wide current limit common mode range• TTL/CMOS compatible logic ports• Symmetry correction capability• Guaranteed 6 unit synchronization SG3526DW Applications • Available to MIL-STD-883B and DESC SMD• Radiation data available• LMI level "S"processing available


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Manufacturer information


Littelfuse (NASDAQ: LFUS) - As the worldwide leader in circuit protection, Littelfuse offers POWR-GARD®, Teccor®, Wickmann®, Pudenz®, Hamlin®, PulseGuard® and SIDACtor® branded products, with a wide range of technologies such as Fuses and Accessories, PTCs, GDTs, Varistors, Polymer ESD Suppressors, Surge Protection Modules, TVS Diodes, TVS Diode Arrays (SPA® Diodes), Switching Thyristors, Power Modules, LED Protector, SIDACtor® Protection Thyristor as well as reed switches, relays and Hall Effect sensors. Littelfuse products are backed by more than 88 years of technology innovation, industry leading technical support, design and manufacturing expertise. Littelfuse products are vital components in virtually every product that uses electrical energy, including automobiles, computers, consumer electronics, handheld devices, industrial equipment, and telecom/datacom circuits

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