RY7010

The 7010 is a 1A constant current LED driver designed to provide a simple, high efficiency solution for driving high power LEDs. With a 100mV reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for driving various types of LEDs. Supply current with no load is 40μA and drops to < 1μA in shutdown. The 2.5V to 5.5V input voltage range makes the RY7010 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM/PFM mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. Additional features include user accessible CTRL pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by-cycle current limit and overcurrent protection. The RY7010 requires a minimal number of readily available, external components and is available in a space saving SOT23-5 package.

Applications

• LED Drivers
• Industrial Lighting
• LED Flashlights
• Digital Still and Video Cameras

Key features

• 2.5V to 5.5V Input Voltage Range
• 1A Continuous Output Current
• 1.5MHz Switching Frequency
• LED Open Load Protection
• Built-in Over Current Limit
• Input Over Voltage Protection
• PFM Mode for High Efficiency in Light Load
• Internal Soft-Start
• PWM Brightness Control on Enable
• 100mV Low Feedback Voltage
• No Schottky Diode Required
• Over Temperature Protected
• Low Quiescent Current: 40μA
• LED Short Protection
• Available in SOT23-5 package
• -40°C to +85°C Temperature Range