Integrated Circuits (ICs)

LTC1503CMS8-1.8#PBF

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Analog Devices Inc./Maxim Integrated

HIGH EFFICIENCY INDUCTORLESS STEP-DOWN DC/DC CONVERTER

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Integrated Circuits (ICs)

LTC1503CMS8-1.8#PBF

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Analog Devices Inc./Maxim Integrated

HIGH EFFICIENCY INDUCTORLESS STEP-DOWN DC/DC CONVERTER

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DocumentsDatasheet R402 Reliability Data

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC1503CMS8-1.8#PBF

Current - Output	100 mA
Frequency - Switching	600 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-40 ¯C
Output Configuration	Positive
Package / Case	8-TSSOP, 8-MSOP
Package / Case	0.118 in, 3 mm Width
Supplier Device Package	8-MSOP
Synchronous Rectifier	False
Voltage - Input (Max) [Max]	6 V
Voltage - Input (Min) [Min]	2.4 V
Voltage - Output (Min/Fixed)	1.8 V

LTC1503 Series

High Efficiency Inductorless Step-Down DC/DC Converter

Part	Function	Frequency - Switching	Output Configuration	Number of Outputs	Current - Output	Voltage - Input (Min) [Min]	Package / Case	Package / Case	Package / Case	Voltage - Output (Min/Fixed)	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Voltage - Input (Max) [Max]	Package / Case
Analog Devices Inc./Maxim Integrated LTC1503IS8-2#PBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V	0.154 in	8-SOIC	3.9 mm	2 V	8-SO	85 C	-40 ¯C	Surface Mount	6 V
Analog Devices Inc./Maxim Integrated LTC1503IS8-1.8#PBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V	0.154 in	8-SOIC	3.9 mm	1.8 V	8-SO	85 C	-40 ¯C	Surface Mount	6 V
Analog Devices Inc./Maxim Integrated LTC1503CMS8-2#PBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V		8-MSOP 8-TSSOP		2 V	8-MSOP	85 C	-40 ¯C	Surface Mount	6 V	0.118 in 3 mm Width
Analog Devices Inc./Maxim Integrated LTC1503CMS8-1.8#PBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V		8-MSOP 8-TSSOP		1.8 V	8-MSOP	85 C	-40 ¯C	Surface Mount	6 V	0.118 in 3 mm Width
Analog Devices Inc./Maxim Integrated LTC1503CS8-1.8#TRPBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V	0.154 in	8-SOIC	3.9 mm	1.8 V	8-SO	85 C	-40 ¯C	Surface Mount	6 V
Analog Devices Inc./Maxim Integrated LTC1503IS8-1.8#TRPBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V	0.154 in	8-SOIC	3.9 mm	1.8 V	8-SO	85 C	-40 ¯C	Surface Mount	6 V
Analog Devices Inc./Maxim Integrated LTC1503CS8-2#PBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V	0.154 in	8-SOIC	3.9 mm	2 V	8-SO	85 C	-40 ¯C	Surface Mount	6 V
Analog Devices Inc./Maxim Integrated LTC1503CS8-2#PBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V	0.154 in	8-SOIC	3.9 mm	2 V	8-SO	85 C	-40 ¯C	Surface Mount	6 V
Analog Devices Inc./Maxim Integrated LTC1503IS8-2#TRPBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V	0.154 in	8-SOIC	3.9 mm	2 V	8-SO	85 C	-40 ¯C	Surface Mount	6 V
Analog Devices Inc./Maxim Integrated LTC1503CS8-2#TRPBF	Step-Down	600 kHz	Positive	1	100 mA	2.4 V	0.154 in	8-SOIC	3.9 mm	2 V	8-SO	85 C	-40 ¯C	Surface Mount	6 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	286	$ 8.13	1m+
	Tube	1	$ 8.47	1m+
		10	$ 5.83
		25	$ 5.14
		100	$ 4.38
		250	$ 4.01
		500	$ 3.78
		1000	$ 3.59
		2500	$ 3.46

Description

General part information

LTC1503 Series

The LTC1503-1.8/LTC1503-2 are switched capacitor step-down DC/DC converters that produce a regulated output from a 2.4V to 6V input. The parts use switched capacitor fractional conversion to achieve high efficiency over the entire input range. No inductors are required. Internal circuitry controls the step-down conversion ratio to optimize efficiency as the input voltage and load conditions vary. Typical efficiency is 25% higher than that of a low dropout (LDO) linear regulator.Regulation is achieved by sensing the output voltage and enabling the internal switching network as needed to maintain a fixed output voltage. This method of regulation enables the parts to achieve high efficiency at extremely light loads. Low operating current (25µA with no load, 5µA in shutdown) and low external parts count (two 1µF flying capacitors and two 10µF bypass capacitors) make the LTC1503-1.8/LTC1503-2 ideally suited for space constrained battery-powered applications. The parts are fully short-circuit and over temperature protected.The LTC1503-1.8/LTC1503-2 are available in 8-pin MSOP and SO packages.ApplicationsCellular PhonesHandheld ComputersSmart Card ReadersLow Power DSP SuppliesPortable Electronic EquipmentHandheld Medical Instruments