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LTC3644-2 - 1.25A Parallelable Synchronous StepDown Regulator

Download the LTC3644-2 datasheet PDF. This datasheet also covers the LTC3644 variant, as both devices belong to the same 1.25a parallelable synchronous stepdown regulator family and are provided as variant models within a single manufacturer datasheet.

General Description

The LTC®3644/LTC3644-2 is a quad 1.25A output, high efficiency synchronous monolithic step-down regulator capable of operating from input supplies up to 17V.

The switching frequency is internally fixed to 1MHz or 2.25MHz with a ±50% synchronization range.

Key Features

  • n Quad Step-down Outputs: 1.25A per Channel n Wide VIN Range: 2.7V to 17V n Wide VOUT Range: 0.6V to VIN n 1.25A/2.5A/3.75A/5A IOUT Configurable with One Inductor n Integrated 300mΩ P-Channel/80mΩ N-Channel MOSFETs Provide Up to 93% Efficiency n No-Load Burst Mode Operation IQ < 10µA with All Channels Enabled n Constant Frequency (1MHz/2.25MHz) with ±50% Frequency Synchronization Range n ±1% Output Voltage Accuracy n Current Mode Operation for Excellent Line and Load Transient Response n Full Dr.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LTC3644-AnalogDevices.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Analog Devices

Part Number Description
LTC3644 1.25A Parallelable Synchronous StepDown Regulator
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LTC3644/LTC3644-2 Quad 17V, 1.25A Parallelable Synchronous StepDown Regulator with Ultralow Quiescent Current FEATURES n Quad Step-down Outputs: 1.25A per Channel n Wide VIN Range: 2.7V to 17V n Wide VOUT Range: 0.6V to VIN n 1.25A/2.5A/3.75A/5A IOUT Configurable with One Inductor n Integrated 300mΩ P-Channel/80mΩ N-Channel MOSFETs Provide Up to 93% Efficiency n No-Load Burst Mode Operation IQ < 10µA with All Channels Enabled n Constant Frequency (1MHz/2.25MHz) with ±50% Frequency Synchronization Range n ±1% Output Voltage Accuracy n Current Mode Operation for Excellent Line and Load Transient Response n Full Dropout Operation (100% Duty Cycle) n Phase Shift Programmable with External Clock n 5mm × 5mm × 1.