LTC1754 Series

Micropower, Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23

Catalog

Micropower, Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23

Part	Output Configuration	Mounting Type	Voltage - Input (Min) [Min]	Current - Output	Voltage - Input (Max) [Max]	Number of Outputs	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Package / Case	Frequency - Switching	Output Type	Function	Voltage - Output (Min/Fixed)	Synchronous Rectifier
Analog Devices LTC1754ES6-3.3#TRPBF	Positive	Surface Mount	2 V	40 mA	4.4 V	1	85 °C	-40 °C	TSOT-23-6	SOT-23-6	600 kHz	1.81 mOhm	Step-Up/Step-Down	3.3 V

Catalog

Micropower, Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23

Key Features

• Ultralow Power: IIN= 13µA

• Regulated Output Voltage: 3.3V ±4%, 5V ±4%

• 5V Output Current: 50mA (VIN≥ 3.0V)

• 3.3V Output Current: 40mA (VIN≥ 2.5V)

• No Inductors Needed

• Very Low Shutdown Current: <1µA

• Shutdown Disconnects Load from VIN

• Internal Oscillator: 600kHz

• Short-Circuit and Overtemperature Protected

• Ultrasmall Application Circuit: (0.052 Inch²)

• 6-Pin SOT-23 Package

Description

The LTC1754 is a micropower charge pump DC/DC converter that produces a regulated output. The input voltage range is 2V to 4.4V for 3.3V output and 2.7V to 5.5V for 5V output. Extremely low operating current and a low external parts count (one flying capacitor and two small bypass capacitors at VINand VOUT) make the LTC1754 ideally suited for small, battery-powered applications. The total component area of the application circuit shown below is only 0.052 inch².The LTC1754 operates as a Burst Mode™switched capacitor voltage doubler to produce a regulated output. It has thermal shutdown capability and can survive a continuous short circuit from VOUTto GND.The LTC1754 is available in a 6-pin SOT-23 package.ApplicationsSIM Interface Supplies for GSM Cellular TelephonesWhite LED Power SuppliesLi-Ion Battery Backup SuppliesHandheld ComputersSmart Card ReadersPCMCIA Local 5V Supplies