LTM8040EV#PBF

LTM8040 is a fixed frequency step-down DC/DC μModule® regulator designed to operate as a constant current source. Internal circuitry monitors the output current to provide accurate current regulation, which is ideal for driving high current LEDs. High output current accuracy is maintained over a wide current range, from 35mA to 1A, allowing a wide dimming range over an output voltage range of 2.5V to 13V. Unique PWM circuitry allows a dimming range of 250:1, avoiding the colour shift normally associated with LED current dimming. This device regulates a broad array of power sources, from 4-cell batteries and 5V logic rails to unregulated wall transformers, lead acid batteries and distributed power supplies. It is widely used in application such as automotive and avionic lighting, architectural detail lighting, display backlighting, constant current sources etc.

• Wide input voltage range is 4V to 36V
• True colour PWM™ delivers constant colour with 250:1 dimming ratio
• Adjustable control of LED current
• High output current accuracy is maintained over a wide range from 35mA to 1A
• Open LED and short-circuit protection
• Grounded LED cathode connection
• LEDA current is 1A typical at (ADJ open)
• Input quiescent current is 2.6mA typical
• Operating temperature is 0°C to 125°C
• Package style is 66-lead LGA

附註

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party