ADI LTC1502CS8-3.3#PBF

The LTC1502 - 3.3 is a quadrupler charge pump DC/DC converter that produces a regulated 3.3V output from a single alkaline cell input. It requires only five small external capacitors—no inductors are required. Low supply current (40μA typical, 5μA in shutdown) and minimal external components make the LTC1502 - 3.3 ideal for space and power conscious single - cell applications. The total printed circuit board area of the circuit shown below is less than 0.125in². Forcing the C1⁻/SHDN pin low through an external resistive pull - down puts the part into shutdown mode. During shutdown, the internal oscillator is stopped and the load is disconnected from VIN. An internal pull - up current on the C1⁻/SHDN pin forces the part back into normal operation once the pull - down resistance is removed. The LTC1502 - 3.3 is short - circuit protected and survives an indefinite VOUT short to ground. The LTC1502 - 3.3 is available in 8 - pin MSOP and SO packages.

• Input Voltage Range: 0.90 to 1.8V
• 0.9V Guaranteed Start - Up Voltage
• Regulated Output Voltage: 3.3V±4%
• Output Current: 10mA (VIN ≥ 1V)
• No Inductors
• Shutdown Disconnects Load from VIN
• Low Operating Current: 40μA
• Low Shutdown Current: 5μA
• Short - Circuit and Overtemperature Protected
• Application Circuit Fits in <0.125in² PCB Area
• Available in 8 - Pin MSOP and SO Packages

• Pagers
• Battery Backup Supplies
• Portable Electronic Equipment
• Handheld Medical Instruments
• Glucose Meters