Texas Instruments UCC3807D-1 Low-Power BiCMOS Current-Mode PWM Controller

The UCC3807D-1 from Texas Instruments is a versatile and efficient low-power pulse-width modulation (PWM) controller that operates in a current-mode control scheme. Designed with advanced BiCMOS technology, this device offers an optimal solution for power supply applications where power efficiency, reliability, and compactness are critical.

With its wide input voltage range and low startup current, the UCC3807D-1 is particularly suitable for off-line power supplies, DC-DC converters, and battery-powered systems. The controller integrates a range of features that enhance system performance, including programmable soft start, under-voltage lockout with hysteresis, and automatic feed-forward compensation.

The UCC3807D-1 is designed to minimize power consumption both in operation and standby mode, which helps in achieving higher power efficiency and meeting energy-saving standards. Its current-mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation. The device's high current drive capability and fast slew rates ensure robust and efficient operation even in demanding applications.

Key features of the UCC3807D-1 include:

• Low startup and operating currents, typically 0.5 mA and 1.1 mA respectively
• Trimmed oscillator discharge current for precise duty cycle control
• High current totem-pole output capable of driving a power MOSFET
• Soft start and maximum duty cycle clamping
• Under-voltage lockout with hysteresis
• Frequency operation up to 1 MHz

The device is offered in an 8-pin SOIC package, making it compact and easy to integrate into various designs. Its operating temperature range from -40°C to +85°C ensures reliable performance across a wide range of environmental conditions. Whether you're designing a power supply for consumer electronics, industrial systems, or portable devices, the UCC3807D-1 provides a high-performance solution with Texas Instruments' renowned quality and reliability.