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LT1938 Datasheet Step-down Switching Regulator

Manufacturer: Linear Technology (now Analog Devices)

General Description

The LT®1938 is an adjustable frequency (300kHz to 2.8MHz) monolithic buck switching regulator that accepts input voltages up to 25V.

A high efficiency 0.18Ω switch is included on the die along with a boost Schottky diode and the necessary oscillator, control and logic circuitry.

Current mode topology is used for fast transient response and good loop stability.

Key Features

  • Wide Input Voltage Range: 3.6V to 25V.
  • 2.2A Maximum Output Current.
  • Adjustable Switching Frequency: 300kHz to 2.8MHz.
  • Low Shutdown Current: IQ < 1µA.
  • Integrated Boost Diode.
  • Power Good Flag.
  • Saturating Switch Design: 0.18Ω On-Resistance.
  • 1.265V Feedback Reference Voltage.
  • Output Voltage: 1.265V to 20V.
  • Soft-Start Capability.
  • Small 10-Pin Thermally Enhanced (3mm × 3mm) DFN Package.

More Datasheets from Linear Technology (now Analog Devices)

Part Number Description
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LT1963 Fast Transient Response LDO Regulators
LT1963A Fast Transient Response LDO Regulators
LT1965 Low Dropout Linear Regulator
LT1969 Adjustable Current Operational Amplifier

LT1938 Distributor