LT1611CS5#TRMPBF

LT1611 is an industry’s first inverting current mode DC/DC converter. Intended for use in small, low power applications, it operates from an input voltage as low as 1.1V and switches at 1.4MHz, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. Its small size and high switching frequency enable the complete DC/DC converter function to consume less than 0.25 square inches of PC board area. This device replaces nonregulated “charge pump” solutions in many applications. It operates in a dual inductor inverting topology which filters the input side as well as the output side of the DC/DC converter. Fixed frequency switching ensures a clean output free from low frequency noise typically present with charge pump solutions. It is used in application such as MR head bias, digital camera CCD bias, LCD bias, GaAs FET bias, positive-to-negative conversion etc.

• Very low noise: 1mVP–P output ripple
• Better regulation than a charge pump
• Uses tiny capacitors and inductors, internally compensated
• Effective output impedance is 0.14 ohm
• Low shutdown current is 1µA maximum at (VSHDN = 0V, VIN = 5V)
• Low VCESAT switch is 300mV typical at (300mA)
• Quiescent current is 3mA typical
• Switch leakage current is 1µA maximum at (VSW = 5V)
• Operating temperature is 0°C to 70°C (commercial)
• Package style is 5-lead plastic SOT-23

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