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LTC1438 - Dual High Efficiency/ Low Noise/ Synchronous Step-Down Switching Regulators

Download the LTC1438 datasheet PDF. This datasheet also covers the LTC variant, as both devices belong to the same dual high efficiency/ low noise/ synchronous step-down switching regulators family and are provided as variant models within a single manufacturer datasheet.

General Description

The LTC ®1438/LTC1439 are dual, synchronous stepdown switching regulator controllers which drive external N-channel power MOSFETs in a phase-lockable fixed frequency architecture.

Key Features

  • s s s s s s s.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LTC-1438.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Linear Technology (now Analog Devices)

Part Number Description
LTC1430 High Power Step-Down Switching Regulator Controller
LTC1430A High Power Step-Down Switching Regulator Controller
LTC1433 450mA/ Low Noise Current Mode Step-Down DC/DC Converters
LTC1434 450mA/ Low Noise Current Mode Step-Down DC/DC Converters
LTC1435 High Efficiency Low Noise Synchronous Step-Down Switching Regulator

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
LTC1438/LTC1439 Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators FEATURES s s s s s s s DESCRIPTION The LTC ®1438/LTC1439 are dual, synchronous stepdown switching regulator controllers which drive external N-channel power MOSFETs in a phase-lockable fixed frequency architecture. The Adaptive PowerTM output stage selectively drives two N-channel MOSFETs at frequencies up to 400kHz while reducing switching losses to maintain high efficiencies at low output currents. An auxiliary 0.5A linear regulator using an external PNP pass device provides a low noise, low dropout voltage source. A secondary winding feedback control pin (SFB1) guarantees regulation regardless of load on the main output by forcing continuous operation.