LT3483AIDC#TRMPBF

LT3483AIDC#TRMPBF is a micropower inverting DC/DC converter with an integrated Schottky diode and one-resistor feedback. This device features a quiescent current of only 40µA at no load, which further reduces to 0.1µA in shutdown. A current-limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load currents. A precisely trimmed 10µA feedback current enables one-resistor feedback and virtually eliminates feedback loading of the output. The 40V switch enables voltage outputs up to -38V to be generated without the use of costly transformers. Applications include LCD bias, handheld computers, battery backup, digital cameras, and OLED bias.

• Internal 40V Schottky diode, one resistor feedback (other resistor inside)
• Wide input voltage range from 2.5V to 16V, uses small surface mount components
• Output short-circuit protected, generates regulated negative outputs to -38V
• Quiescent current in shutdown is 1µA maximum at (active-low VSHDN = GND, TA = 25°C)
• Quiescent current (not switching) is 40µA typical at (FB = -0.05V, TA = 25°C)
• Switch current limit is 400mA typical at (TA = 25°C)
• Switch VCESAT is 200mV typical at (ISW = 150mA to GND, TA = 25°C)
• Switch leakage current is 1µA maximum at (SW = 40V, TA = 25°C)
• FB output current is -10µA typical at (FB = VFB –5mV)
• Operating ambient temperature range from -40°C to 125°C, 8-lead plastic DFN package

Notes

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