LTC3251EMSE#TRPBF

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Analog Devices

500MA HIGH EFFICIENCY, LOW NOISE, INDUCTORLESS STEP-DOWN DC/DC CONVERTERS

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LTC3251EMSE#TRPBF

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Analog Devices

500MA HIGH EFFICIENCY, LOW NOISE, INDUCTORLESS STEP-DOWN DC/DC CONVERTERS

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Technical Specifications

Parameters and characteristics for this part

Specification	LTC3251EMSE#TRPBF

Current - Output	500 mA
Frequency - Switching [Max]	1.6 MHz
Frequency - Switching [Min]	1 MHz
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	Adjustable
Package / Case	3 Lead, 0.118 in
Package / Case	Exposed Pad, 10-TFSOP, 10-MSOP
Supplier Device Package	10-MSOP-EP
Synchronous Rectifier	False
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Max) [Max]	1.6 V
Voltage - Output (Min/Fixed)	0.9 V

LTC3251 Series

500mA High Efficiency, Low Noise, Inductorless Step-Down DC/DC Converters

Part	Output Type	Voltage - Input (Max) [Max]	Supplier Device Package	Voltage - Output (Min/Fixed)	Frequency - Switching [Min]	Frequency - Switching [Max]	Synchronous Rectifier	Mounting Type	Output Configuration	Function	Voltage - Input (Min) [Min]	Number of Outputs	Package / Case	Package / Case	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Voltage - Output (Max) [Max]
Analog Devices LTC3251EMSE-1.5#PBF	1.81 mOhm	5.5 V	10-MSOP-EP	1.5 V	1 MHz	1.6 MHz		Surface Mount	Positive	Step-Down	2.7 V	1	0.118 in 3 Lead	10-MSOP 10-TFSOP Exposed Pad	500 mA	85 °C	-40 °C
Analog Devices LTC3251EMSE#TRPBF		5.5 V	10-MSOP-EP	0.9 V	1 MHz	1.6 MHz		Surface Mount	Positive	Step-Down	2.7 V	1	0.118 in 3 Lead	10-MSOP 10-TFSOP Exposed Pad	500 mA	85 °C	-40 °C	Adjustable	1.6 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	2500	$ 3.25

Description

General part information

LTC3251 Series

The LTC3251/LTC3251-1.2/LTC3251-1.5 are 2-phase charge pump step-down DC/DC converters that produce a regulated output from a 2.7V to 5.5V input. The parts use switched capacitor fractional conversion to achieve twice the typical efficiency of a linear regulator. No inductors are required. VOUTis resistor programmable from 0.9V to 1.6V or fixed at 1.2V or 1.5V, with up to 500mA of load current available.A unique 2-phase spread spectrum architecture provides a very low noise regulated output as well as low noise at the input. The parts have four operating modes: Continuous Spread Spectrum, Spread Spectrum with Burst Mode operation, Super Burst™mode operation and shutdown.Low operating current (35µA in Burst Mode operation, 10µA in Super Burst mode operation) and low external parts count make the LTC3251/LTC3251-1.2/LTC3251-1.5 ideally suited for space-constrained battery-powered applications. The parts are short-circuit and over-temperature protected, and are available in a thermally enhanced 10-pin MSOP package.ApplicationsHandheld DevicesCellular PhonesPortable Electronic EquipmentDSP Power Supplies

LTC3251EMSE#TRPBF

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LTC3251EMSE#TRPBF

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Technical Specifications

LTC3251 Series

Pricing

Description

LTC3251 Series

Documents

Datasheet

Tape and Reel Packaging

Spread Spectrum Frequency Modulation Reduces EMI

R415 Reliability Data

LTC3251 Series