LTC1522 Series

Micropower, Regulated 5V Charge Pump DC/DC Converter

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

Micropower, Regulated 5V Charge Pump DC/DC Converter

Part	Operating Temperature [Max]	Function	Voltage - Input (Min) [Min]	Number of Outputs	Package / Case	Package / Case	Package / Case	Voltage - Input (Max) [Max]	Frequency - Switching	Current - Output	Supplier Device Package	Output Configuration	Mounting Type	Voltage - Output (Min/Fixed)	Package / Case
Analog Devices Inc./Maxim Integrated LTC1522CS8#TRPBF	70 °C	Step-Up	2.7 V	1	0.154 in	8-SOIC	3.9 mm	5 V	700 kHz	20 mA	8-SO	Positive	Surface Mount	5 V
Analog Devices Inc./Maxim Integrated LTC1522IS8#PBF	70 °C	Step-Up	2.7 V	1	0.154 in	8-SOIC	3.9 mm	5 V	700 kHz	20 mA	8-SO	Positive	Surface Mount	5 V
Analog Devices Inc./Maxim Integrated LTC1522CS8#PBF	70 °C	Step-Up	2.7 V	1	0.154 in	8-SOIC	3.9 mm	5 V	700 kHz	20 mA	8-SO	Positive	Surface Mount	5 V
Analog Devices Inc./Maxim Integrated LTC1522CMS8#TRPBF	70 °C	Step-Up	2.7 V	1		8-MSOP 8-TSSOP		5 V	700 kHz	20 mA	8-MSOP	Positive	Surface Mount	5 V	0.118 in 3 mm Width
Analog Devices Inc./Maxim Integrated LTC1522IS8#TRPBF	70 °C	Step-Up	2.7 V	1	0.154 in	8-SOIC	3.9 mm	5 V	700 kHz	20 mA	8-SO	Positive	Surface Mount	5 V
Analog Devices Inc./Maxim Integrated LTC1522CMS8#PBF	70 °C	Step-Up	2.7 V	1		8-MSOP 8-TSSOP		5 V	700 kHz	20 mA	8-MSOP	Positive	Surface Mount	5 V	0.118 in 3 mm Width
Analog Devices Inc./Maxim Integrated LTC1522CS8#TRPBF	70 °C	Step-Up	2.7 V	1	0.154 in	8-SOIC	3.9 mm	5 V	700 kHz	20 mA	8-SO	Positive	Surface Mount	5 V

Catalog

Micropower, Regulated 5V Charge Pump DC/DC Converter

Description

The LTC1522 is a micropower charge pump DC/DC converter that produces a regulated 5V output from a 2.7V to 5V input supply. Extremely low supply current (6µA typical with no load, <1µA in shutdown) and low external parts count (one 0.22µF flying capacitor and two 10µF capacitors at VINand VOUT) make the LTC1522 ideally suited for small, light load battery-powered applications. Typical efficiency (VIN= 3V) exceeds 75% with load currents between 50µA and 20mA. Modulating the SHDN pin keeps the typical efficiency above 75% with load currents all the way down to 10µA.The LTC1522 has thermal shutdown and can survive a continuous short from VOUTto GND. In shutdown the load is disconnected from VIN. The part is available in 8-pin MSOP and SO packages. The LTC1522 is pin compatible with the LTC1516 in applications where VIN≥ 2.7V and IOUT≤ 20mA.ApplicationsSIM Interface Supplies for GSM Cellular TelephonesLi-Ion Battery Backup SuppliesLocal 3V to 5V ConversionSmart Card ReadersPCMCIA Local 5V Supplies