Specification	LT1109ACS8-5#TRPBF

Current - Output	2 A
Frequency - Switching	120 kHz
Function	Step-Up
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Configuration	Positive
Package / Case	0.154 in
Package / Case	8-SOIC
Package / Case	3.9 mm
Supplier Device Package	8-SO
Synchronous Rectifier	False
Topology	Boost
Voltage - Input (Max) [Max]	9 V
Voltage - Input (Min) [Min]	2 V
Voltage - Output (Min/Fixed)	5 V

LT1109A Series

Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V

Part	Output Type	Supplier Device Package	Voltage - Output (Max) [Max]	Number of Outputs	Function	Current - Output	Operating Temperature [Max]	Output Configuration	Voltage - Output (Min/Fixed)	Mounting Type	Topology	Frequency - Switching	Voltage - Input (Max) [Max]	Package / Case	Package / Case	Package / Case	Voltage - Input (Min) [Min]
Analog Devices Inc./Maxim Integrated LT1109ACS8#PBF	Adjustable	8-SO	50 V	1	Step-Up	2 A	70 °C	Positive	1.25 V	Surface Mount	Boost	120 kHz	9 V	0.154 in	8-SOIC	3.9 mm	2 V
Analog Devices Inc./Maxim Integrated LT1109ACS8-5#TRPBF		8-SO		1	Step-Up	2 A	70 °C	Positive	5 V	Surface Mount	Boost	120 kHz	9 V	0.154 in	8-SOIC	3.9 mm	2 V
Analog Devices Inc./Maxim Integrated LT1109ACS8#TRPBF	Adjustable	8-SO	50 V	1	Step-Up	2 A	70 °C	Positive	1.25 V	Surface Mount	Boost	120 kHz	9 V	0.154 in	8-SOIC	3.9 mm	2 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	N/A	0	$ 4.44	1m+

Description

General part information

LT1109A Series

The LT1109A is a simple step-up DC/DC converter. The 8-pin DIP or SOIC devices require only four external components to construct a complete DC/DC converter. Current drain is just 360µA at no load, making the device ideal for cost-sensitive applications where standby current must be kept to a minimum.The LT1109A-12 can deliver 12V at over 150mA from a 5V supply, enough power to program four flash memory chips simultaneously. The LT1109A-5 can deliver 5V at up to 110mA from a 2V input. The devices feature a shutdown pin that turns off the oscillator when taken low. The gatedoscillator design requires no frequency compensation components. High frequency 120kHz operation permits the use of small surface mount inductors and capacitors.ApplicationsFlash Memory VPP Generators5V to 12V Converters3.3V to 12V ConvertersDisk DrivesPC Plug-In CardsPeripheralsBattery-Powered Equipment

Documents

Technical documentation and resources

R177 Reliability Data

Reliability Data

LT1109ACS8-5#TRPBF | Datasheet

Datasheet