• 简体中文
• English

LTC1502-3.3 - Single Cell to 3.3V Regulated Charge Pump DC/DC Converter

The LTC®1502-3.3 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 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.

特点 Input Voltage Range: 0.9V 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 典型应用

应用 Pagers Battery Backup Supplies Portable Electronic Equipment Handheld Medical Instruments Glucose Meters 封装信息

演示电路板