LM2595 Series

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator

Catalog

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator

Part	Output Configuration	Topology	Function	Number of Outputs	Mounting Type	Supplier Device Package	Voltage - Input (Min) [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Current - Output	Voltage - Output (Min/Fixed)	Package / Case	Output Type	Voltage - Output (Max)	Output Type
Texas Instruments LM2595S-12	Positive	Buck	Step-Down	1	Surface Mount	TO-263 (DDPAK-5)	4.5 V	-40 °C	125 ¯C	1 A	12 V	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm
Texas Instruments LM2595SX-5.0	Positive	Buck	Step-Down	1	Surface Mount	TO-263 (DDPAK-5)	4.5 V	-40 °C	125 ¯C	1 A	5 V	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm
Texas Instruments LM2595SX-12/NOPB	Positive	Buck	Step-Down	1	Surface Mount	TO-263 (DDPAK-5)	4.5 V	-40 °C	125 ¯C	1 A	12 V	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm
Texas Instruments LM2595T-3.3/NOPB	Positive	Buck	Step-Down	1	Through Hole	TO-220-5	4.5 V	-40 °C	125 ¯C	1 A	3.3 V	TO-220-5 Formed Leads	1.81 mOhm
Texas Instruments LM2595T-ADJ	Positive	Buck	Step-Down	1	Through Hole	TO-220-5	4.5 V	-40 °C	125 ¯C	1 A	1.2 V	TO-220-5 Formed Leads		37 V	Adjustable
Texas Instruments LM2595SX-ADJ	Positive	Buck	Step-Down	1	Surface Mount	TO-263 (DDPAK-5)	4.5 V	-40 °C	125 ¯C	1 A	1.2 V	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA		37 V	Adjustable
Texas Instruments LM2595T-ADJ/LF02	Positive	Buck	Step-Down	1	Through Hole	TO-220-5	4.5 V	-40 °C	125 ¯C	1 A	1.2 V	TO-220-5 Formed Leads		37 V	Adjustable
Texas Instruments LM2595SX-3.3/NOPB	Positive	Buck	Step-Down	1	Surface Mount	TO-263 (DDPAK-5)	4.5 V	-40 °C	125 ¯C	1 A	3.3 V	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm
Texas Instruments LM2595T-5.0/NOPB	Positive	Buck	Step-Down	1	Through Hole	TO-220-5	4.5 V	-40 °C	125 ¯C	1 A	5 V	TO-220-5 Formed Leads	1.81 mOhm
Texas Instruments LM2595T-3.3	Positive	Buck	Step-Down	1	Through Hole	TO-220-5	4.5 V	-40 °C	125 ¯C	1 A	3.3 V	TO-220-5 Formed Leads	1.81 mOhm

Catalog

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator

Key Features

• 3.3-V, 5-V, 12-V, and Adjustable Output VersionsAdjustable Version Output Voltage Range, 1.2 Vto 37 V ±4% Maximum Over Line and LoadConditionsAvailable in TO-220 and TO-263 Surface-MountPackagesEnsured 1-A Output Load CurrentInput Voltage Range Up to 40 VRequires Only 4 External ComponentsExcellent Line and Load Regulation Specifications150-kHz Fixed-Frequency Internal OscillatorTTL Shutdown CapabilityLow Power Standby Mode, IQ, Typically 85 µAHigh EfficiencyUses Readily Available Standard InductorsThermal Shutdown and Current-Limit Protection3.3-V, 5-V, 12-V, and Adjustable Output VersionsAdjustable Version Output Voltage Range, 1.2 Vto 37 V ±4% Maximum Over Line and LoadConditionsAvailable in TO-220 and TO-263 Surface-MountPackagesEnsured 1-A Output Load CurrentInput Voltage Range Up to 40 VRequires Only 4 External ComponentsExcellent Line and Load Regulation Specifications150-kHz Fixed-Frequency Internal OscillatorTTL Shutdown CapabilityLow Power Standby Mode, IQ, Typically 85 µAHigh EfficiencyUses Readily Available Standard InductorsThermal Shutdown and Current-Limit Protection

Description

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 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 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 LM2595 series operates at a switching frequency of 150 kHz, thus allowing smaller-sized filter components than what would be needed with lower-frequency switching regulators. Available in a standard 5-pin TO-220 package with several different lead bend options, and a 5-pin TO-263 surface-mount package. Typically, for output voltages less than12 V, and ambient temperatures less than 50°C, no heat sink is required. A standard series of inductors are available from several different manufacturers optimized for use with the LM2595 series. This feature greatly simplifies the design of switch-mode power supplies. Other features include a ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 85-µA stand-by current. Self protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions. 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 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 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 LM2595 series operates at a switching frequency of 150 kHz, thus allowing smaller-sized filter components than what would be needed with lower-frequency switching regulators. Available in a standard 5-pin TO-220 package with several different lead bend options, and a 5-pin TO-263 surface-mount package. Typically, for output voltages less than12 V, and ambient temperatures less than 50°C, no heat sink is required. A standard series of inductors are available from several different manufacturers optimized for use with the LM2595 series. This feature greatly simplifies the design of switch-mode power supplies. Other features include a ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 85-µA stand-by current. Self protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.