LTC1261LCS8#PBF

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Analog Devices

SWITCHED CAPACITOR REGULATED VOLTAGE INVERTER

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LTC1261LCS8#PBF

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Analog Devices

SWITCHED CAPACITOR REGULATED VOLTAGE INVERTER

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DocumentsDatasheet R320 Reliability Data

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC1261LCS8#PBF

Frequency - Switching	650 kHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Configuration	Negative
Output Type	Adjustable
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SO
Synchronous Rectifier	False
Voltage - Input (Max) [Max]	5.25 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Max) [Max]	-5 V
Voltage - Output (Min/Fixed)	-1.23 V

LTC1261L Series

Switched Capacitor Regulated Voltage Inverter

Part	Voltage - Output (Min/Fixed)	Number of Outputs	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Input (Max) [Max]	Mounting Type	Voltage - Output (Max) [Max]	Frequency - Switching	Current - Output	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Function	Voltage - Input (Min) [Min]	Output Configuration	Output Type	Package / Case [custom]	Package / Case
Analog Devices LTC1261IS8#PBF	-1.25 V	1	8-SOIC	3.9 mm	0.154 in	8 V	Surface Mount	-8 V	550 kHz	12 mA	Adjustable	85 °C	-40 °C	8-SO	Step-Up/Step-Down	3 V	Negative
Analog Devices LTC1261IS8#TRPBF	-1.25 V	1	8-SOIC	3.9 mm	0.154 in	8 V	Surface Mount	-8 V	550 kHz	12 mA	Adjustable	85 °C	-40 °C	8-SO	Step-Up/Step-Down	3 V	Negative
Analog Devices LTC1261LIS8#TRPBF	-1.23 V	1	8-SOIC	3.9 mm	0.154 in	5.25 V	Surface Mount	-5 V	650 kHz		Adjustable	85 °C	-40 °C	8-SO	Step-Up/Step-Down	2.7 V	Negative
Analog Devices LTC1261LCS8#PBF	-1.23 V	1	8-SOIC	3.9 mm	0.154 in	5.25 V	Surface Mount	-5 V	650 kHz		Adjustable	70 °C	0 °C	8-SO	Step-Up/Step-Down	2.7 V	Negative
Analog Devices LTC1261LIS8#PBF	-1.23 V	1	8-SOIC	3.9 mm	0.154 in	5.25 V	Surface Mount	-5 V	650 kHz		Adjustable	85 °C	-40 °C	8-SO	Step-Up/Step-Down	2.7 V	Negative
Analog Devices LTC1261CS8#PBF	-1.25 V	1	8-SOIC	3.9 mm	0.154 in	8 V	Surface Mount	-8 V	550 kHz	12 mA	Adjustable	70 °C	0 °C	8-SO	Step-Up/Step-Down	3 V	Negative
Analog Devices LTC1261LIS8-4.5#TRPBF	-4.5 V	1	8-SOIC	3.9 mm	0.154 in	5.25 V	Surface Mount		650 kHz			85 °C	-40 °C	8-SO	Step-Up/Step-Down	4.5 V	Negative	1.81 mOhm
Analog Devices LTC1261LIMS8#TRPBF	-1.23 V	1	8-MSOP 8-TSSOP			5.25 V	Surface Mount	-5 V	650 kHz		Adjustable	85 °C	-40 °C	8-MSOP	Step-Up/Step-Down	2.7 V	Negative		0.118 in	3 mm
Analog Devices LTC1261LCMS8#TRPBF	-1.23 V	1	8-MSOP 8-TSSOP			5.25 V	Surface Mount	-5 V	650 kHz		Adjustable	70 °C	0 °C	8-MSOP	Step-Up/Step-Down	2.7 V	Negative		0.118 in	3 mm
Analog Devices LTC1261CS8-4#TRPBF	-4 V	1	8-SOIC	3.9 mm	0.154 in	8 V	Surface Mount		550 kHz	12 mA		70 °C	0 °C	8-SO	Step-Up/Step-Down	3 V	Negative	1.81 mOhm

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 7.49
		10	$ 5.00
		25	$ 4.35
		100	$ 3.61
		300	$ 3.19
		500	$ 3.10

Description

General part information

LTC1261L Series

The LTC1261L is a switched-capacitor voltage inverter designed to provide a regulated negative voltage from a single positive supply. The LTC1261L operates from a single 2.7V to 5.25V supply and provides an adjustable output voltage from -1.23V to ±5V. The LTC1261L-4/LTC1261L-4.5 needs a single 4.5V to 5.25V supply and provides a fixed output voltage of -4V to -4.5V respectively. Three external capacitors are required: a 0.1µF flying capacitor and an input and output bypass capacitors. An optional compensation capacitor at ADJ (COMP) can be used to reduce the output voltage ripple.Each version of the LTC1261L will supply up to 20mA output current with guaranteed output regulation of ±3.5%. The LTC1261L includes an open-drain REG output that pulls low when the output is within 5% of the set value. Quiescent current is typically 650µA when operating and 5µA in shutdown.The LTC1261L is available in 8-pin MSOP and SO packages.ApplicationsGaAs FET Bias GeneratorsNegative Supply GeneratorsBattery-Powered SystemsSingle Supply Applications