LT1933 Series

600mA, 500kHz Step-Down Switching Regulator in SOT-23 and DFN Packages

Catalog

600mA, 500kHz Step-Down Switching Regulator in SOT-23 and DFN Packages

Part	Voltage - Input (Max) [Max]	Mounting Type	Output Configuration	Function	Supplier Device Package	Voltage - Input (Min) [Min]	Package / Case	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Voltage - Output (Max) [Max]	Frequency - Switching	Current - Output	Output Type	Topology
Analog Devices LT1933ES6#TRPBF	36 V	Surface Mount	Positive	Step-Down	TSOT-23-6	3.6 V	SOT-23-6 Thin TSOT-23-6	1.245 V	70 °C	0 °C	1	33.84 V	500 kHz	600 mA	Adjustable	Buck
Analog Devices LT1933IDCB#TRPBF	36 V	Surface Mount	Positive	Step-Down	6-DFN (2x3)	3.6 V	6-WFDFN Exposed Pad	1.245 V	125 °C	-40 °C	1	33.84 V	500 kHz	600 mA	Adjustable	Buck
Analog Devices LT1933HDCB#TRPBF	36 V	Surface Mount	Positive	Step-Down	6-DFN (2x3)	3.6 V	6-WFDFN Exposed Pad	1.245 V	150 °C	-40 °C	1	33.84 V	500 kHz	600 mA	Adjustable	Buck
Analog Devices LT1933HS6#TRPBF	36 V	Surface Mount	Positive	Step-Down	TSOT-23-6	3.6 V	SOT-23-6 Thin TSOT-23-6	1.245 V	150 °C	-40 °C	1	33.84 V	500 kHz	600 mA	Adjustable	Buck
Analog Devices LT1933IS6#TRPBF	36 V	Surface Mount	Positive	Step-Down	TSOT-23-6	3.6 V	SOT-23-6 Thin TSOT-23-6	1.245 V	125 °C	-40 °C	1	33.84 V	500 kHz	600 mA	Adjustable	Buck

Catalog

600mA, 500kHz Step-Down Switching Regulator in SOT-23 and DFN Packages

Key Features

• Wide Input Range: 3.6V to 36V

• 5V at 600mA from 16V to 36V Input

• 3.3V at 600mA from 12V to 36V Input

• 5V at 500mA from 6.3V to 36V Input

• 3.3V at 500mA from 4.5V to 36V Input

• Fixed Frequency 500kHz Operation

• Uses Tiny Capacitors and Inductors

• Soft-Start

• Internally Compensated

• Low Shutdown Current: <2µA

• Output Adjustable Down to 1.25V

• Low Profile (1mm) SOT-23 (ThinSOT™) and (2mm × 3mm × 0.75mm) 6-Pin DFN Packages

Description

The LT1933 is a current mode PWM step-down DC/DC converter with an internal 0.75A power switch, packaged in a tiny 6-lead SOT-23. The wide input range of 3.6V to 36V makes the LT1933 suitable for regulating power from a wide variety of sources, including unregulated wall transformers, 24V industrial supplies and automotive batteries. Its high operating frequency allows the use of tiny, low cost inductors and ceramic capacitors, resulting in low, predictable output ripple.Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start up. The low current (<2µA) shutdown provides output disconnect, enabling easy power management in battery-powered systems.ApplicationsAutomotive Battery RegulationIndustrial Control SuppliesWall Transformer RegulationDistributed Supply RegulationBattery-Powered Equipment