LTC1517-3.3 Series

Micropower, Regulated 3.3V Charge Pump in a 5-Pin SOT-23 Package

Catalog

Micropower, Regulated 3.3V Charge Pump in a 5-Pin SOT-23 Package

Part	Voltage - Output (Min/Fixed)	Voltage - Input (Max) [Max]	Output Configuration	Package / Case	Frequency - Switching	Supplier Device Package	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Function	Number of Outputs	Voltage - Input (Min) [Min]	Mounting Type	Current - Output	Synchronous Rectifier
Analog Devices LTC1517ES5-3.3#TRMPBF	3.3 V	4.4 V	Positive	SC-74A SOT-753	700 kHz	SOT-23-5	1.81 mOhm	85 °C	-40 °C	Step-Up	1	2 V	Surface Mount	15 mA
Analog Devices LTC1517CS5-3.3#TRMPBF	3.3 V	4.4 V	Positive	SC-74A SOT-753	700 kHz	SOT-23-5	1.81 mOhm	70 °C	0 °C	Step-Up	1	2 V	Surface Mount	15 mA

Catalog

Micropower, Regulated 3.3V Charge Pump in a 5-Pin SOT-23 Package

Key Features

• Ultralow Power: Icc= 6µA Typ

• Short-Circuit/Thermal Protected

• 3.3V ±4% Regulated Output

• VINRange: 2V to 4.4V

• Output Current:8mA (VIN ≥ 2V)15mA (VIN ≥ 2.5V)

• 8mA (VIN ≥ 2V)

• 15mA (VIN ≥ 2.5V)

• No Inductors

• Ultrasmall Application Circuit (0.045in2)

• 700kHz Switching Frequency

• Available in 5-Pin SOT-23

Description

The LTC1517-3.3 is a micropower charge pump DC/DC converter that produces a regulated 3.3V output. The input voltage range is 2V to 4.4V, allowing a single cell lithium battery to produce a regulated 3.3V output over the entire life of the battery. Extremely low operating current (typically 6µA with no load) and low external parts count (one 0.1µF flying capacitor and two small bypass capacitors at VINand VOUT) make the part ideally suited for small, light load battery-powered applications. The total printed circuit board area of the application circuit shown below is only 0.045in2.The part operates as a Burst Mode™switched-capacitor voltage doubler to produce a regulated output. The part has thermal shutdown capability and can survive a continuous short circuit from VOUTto GND. The device is available in a 5-pin SOT-23 package.ApplicationsCellular TelephonesBattery-Operated EquipmentLocal Power SuppliesHandheld InstrumentsPCMCIA Supplies