LTC1503CMS8-1.8#PBF

Active

Analog Devices Inc./Maxim Integrated

HIGH EFFICIENCY INDUCTORLESS STEP-DOWN DC/DC CONVERTER

Find alt

Alpha

LTC1503CMS8-1.8#PBF

Active

Analog Devices Inc./Maxim Integrated

HIGH EFFICIENCY INDUCTORLESS STEP-DOWN DC/DC CONVERTER

Find alt

Alpha

Description Specifications Series Pricing CAD Documents

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

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
Output Type	Fixed
Package Length	0.118 in
Package Name	8-TSSOP, 8-MSOP, 8-MSOP
Package Width	3 mm
Synchronous Rectifier	No
Topology	Charge Pump
Voltage - Input (Max)	6 V
Voltage - Input (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	Output Type	Current - Output	Voltage - Input (Min)	Package Length	Package Name	Package Width	Topology	Voltage - Output (Min/Fixed)	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Synchronous Rectifier	Voltage - Input (Max)
Analog Devices Inc./Maxim Integrated LTC1503IS8-2#PBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.154 in	8-SO 8-SOIC	3.9 mm	Charge Pump	2 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503IS8-1.8#PBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.154 in	8-SO 8-SOIC	3.9 mm	Charge Pump	1.8 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503CMS8-2#PBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.118 in	8-MSOP 8-TSSOP 8-MSOP	3 mm	Charge Pump	2 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503CMS8-1.8#PBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.118 in	8-MSOP 8-TSSOP 8-MSOP	3 mm	Charge Pump	1.8 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503CS8-1.8#TRPBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.154 in	8-SO 8-SOIC	3.9 mm	Charge Pump	1.8 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503IS8-1.8#TRPBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.154 in	8-SO 8-SOIC	3.9 mm	Charge Pump	1.8 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503CS8-2#PBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.154 in	8-SO 8-SOIC	3.9 mm	Charge Pump	2 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503CS8-2#PBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.154 in	8-SO 8-SOIC	3.9 mm	Charge Pump	2 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503IS8-2#TRPBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.154 in	8-SO 8-SOIC	3.9 mm	Charge Pump	2 V	85 °C	-40 °C	Surface Mount	No	6 V
Analog Devices Inc./Maxim Integrated LTC1503CS8-2#TRPBF	Step-Down	600 kHz	Positive	1	Fixed	100 mA	2.4 V	0.154 in	8-SO 8-SOIC	3.9 mm	Charge Pump	2 V	85 °C	-40 °C	Surface Mount	No	6 V

Pricing

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

Create a free account to access distributor pricing data.

CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC1503CMS8-1.8#PBF | Datasheet

R402 Reliability Data