High Accuracy LED Driver Without High-Side Current Sensing
• Fast average current control
• Programmable constant off-time switching
• Linear dimming input
• PWM dimming input
• Output short circuit protection with skip mode
• Ambient operating temperature -40OC to +125OC
• Pin-compatible with the HV9910B
Applications:
• DC/DC or AC/DC LED driver applications
• LED backlight driver for LCD displays
• General purpose constant current source
• LED signage and displays
• Architectural and decorative LED lighting
• LED street lighting
The HV9961 provides current accuracy of +/-3% and requires no loop compensation or high-side current sensing because of Supertex’s proprietary averagemode control scheme. The IC features hiccup-mode LED short-circuit protection and both linear and PWM dimming.
Supertex, Inc. is a publicly held mixed signal semiconductor manufacturer, focused in high voltage analog and mixed signal products for use in the medical, LED lighting, imaging, industrial, and telecommunication markets. Supertex product, corporate and financial information is readily available at www.supertex.com.