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LTC3406-1.2
  • LTC3406-1.2
  • LTC3406-1.2
  • LTC3406-1.2

LTC3406-1.2

PRODUCTION

1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

Analog Devices LTC3406-1.2 Product Info

10 February 2026 7

Features

  • High Efficiency: Up to 90%
  • Very Low Quiescent Current: Only 20µA
  • 600mA Output Current at VIN = 3V
  • 2.5V to 5.5V Input Voltage Range
  • 1.5MHz Constant Frequency Operation
  • No Schottky Diode Required
  • Shutdown Mode Draws < 1µA Supply Current
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Overtemperature Protected
  • Low Profile (1mm) ThinSOT Package

Part details & applications

The LTC3406-1.2 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation with only 20µA drops <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3406-1.2 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. Automatic Burst Mode operation further increases efficiency at light loads.

Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. The LTC3406-1.2 is available in a low profile (1mm) ThinSOT package.

Protected by U.S. Patents including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131.

Vout Fsw Features
LTC3406 Adj. 1.5MHz Burst Mode
LTC3406-1.2