Texas Instruments LM2575S-3.3

Buck No 200KHz~2.2MHz Fixed 1 3.3V 3.3V 40V 4V DDPAK-5,TO-263,TO-263-5L 4.83mm

SIMPLE SWITCHE 1A Step-Down Voltage egulator 5-DDPAK/TO-263 -40 to 125

SWITCHING REG 1A 3.3V, SMD, 2575; Primary Input Voltage:12V; No. of Outputs:1; Output Voltage:3.3V; Output Current:1A; Voltage Regulator Case Style:TO-263; No. of Pins:5; Operating Temperature Range:-40°C to +125°C; SVHC:No SVHC (19-Dec-2011); Accuracy %:4%; Base Number:2575; Frequency:52kHz; IC Generic Number:2575; Input Voltage Max:40V; Input Voltage Min:4V; Operating Temperature Max:125°C; Operating Temperature Min:-40°C; Output Current Max:1A; Output Voltage Max:3.3V; Package / Case:TO-263 (D2-Pak); Power Supply IC Type:Step-down switching regulator; Supply Voltage Max:40V; Supply Voltage Min:4V; Switch Output Current Isw Max:1A; Termination Type:SMD; Voltage Regulator Type:Switching, Step Down (Buck), Inverting

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required. A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed +-4% tolerance on output voltage within specified input voltages and output load conditions, and +-10% on the oscillator frequency. External shutdown is included, featuring 50 uA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.