Texas Instruments LM2595T-3.3

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator 5-TO-220
Conv DC-DC 4.5V to 40V Inv/Step Down Single-Out 3.3V 1A 5-Pin(5 Tab) TO-220 Rail
LM2595 Tube Tin/Lead (Sn/Pb) Obsolete DC to DC switching regulator 3.3V 1A 150kHz -40C~125C TJ
SWITCHING REG 1A 3.3V, 2595, TO-220; Primary Input Voltage:12V; No. of Outputs:1; Output Voltage:3.3V; Output Current:1A; Voltage Regulator Case Style:TO-220; No. of Pins:5; Operating Temperature Range:-25°C to 125°C; SVHC:No SVHC (19-Dec-2011); Accuracy %:4%; Base Number:2595; Frequency:150kHz; IC Generic Number:2595; Input Voltage Max:40V; Input Voltage Min:4.75V; Operating Temperature Max:125°C; Operating Temperature Min:-25°C; Output Current Max:1A; Output Voltage Max:3.3V; Package / Case:TO-220; Power Supply IC Type:Step-down switching regulator; Supply Voltage Max:40V; Supply Voltage Min:4.5V; Switch Output Current Isw Max:1A; Termination Type:Through Hole; Voltage Regulator Type:Switching, Step Down (Buck), Inverting
The LM2595 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, and an adjust-able 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 LM2595 series operates at a switching frequency of150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regu-lators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263surface mount package. Typically, for output voltages less than 12V, and ambient temperatures less than 50*C, no heat sink is required. A standard series of inductors are available from several dif-ferent manufacturers optimized for use with the LM2595 series. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed -4% tolerance on out-put voltage under specified input voltage and output load conditions, and -15% on the oscillator frequency. External shutdown is included, featuring typically 85 uA stand-by current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault condi-tions.