LTC1751EMS8#PBF

LTC1751 is a micropower charge pump DC/ DC converter that produce a regulated output voltage at upto 100mA. Extremely low operating current (20µA typical with no load) and low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make them ideally suited for small, battery-powered applications. This device family operate as Burst Mode™ switched capacitor voltage doublers to achieve ultralow quiescent current. They have thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. The FB pin of the adjustable device can be used to program the desired output voltage or current. An optional soft-start capacitor may be used at the SS pin to prevent excessive inrush current during start-up. It is used in application such as Li-Ion battery backup supplies, local 3V and 5V conversion, smart card readers, PCMCIA local 5V supplies, white LED backlighting etc.

• Input supply voltage is 2V to 5.5V
• Short-circuit/thermal protection
• Switching frequency is 800KHz typical
• Shutdown disconnects load from VIN
• Very low shutdown current is 2µA maximum at (VIN ≤ 3.6V, VOUT = 0V, VSHDN = 0V)
• No inductors, FB regulation voltage is 1.205V typical at (2V ≤ VIN ≤ 5.5V, IOUT ≤ 20mA)
• Operating temperature is -40°C to 85°C
• Package style is 8-lead plastic MSOP

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