LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator | TI.com

LM2575HV (ACTIVE) SIMPLE SWITCHER 1A Step-Down Voltage Regulator

 

Recommended alternative parts

  • LM46001  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Synchronous 60V, 1A Regulator - Higher efficiency, Low Quiescent Current, Smaller Solution Size

Description

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 specified ±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 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Features

  • 3.3V, 5V, 12V, 15V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range,
    •  1.23V to 37V (57V for HV Version) ±4% Max Over
    •  Line and Load Conditions
  • Specified 1A Output Current
  • Wide Input Voltage Range, 40V up to 60V for HV Version
  • Requires Only 4 External Components
  • 52 kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability, Low Power Standby Mode
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current Limit Protection
  • P+ Product Enhancement Tested

All trademarks are the property of their respective owners.

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LM2575HV

  Min   Max Range
Vin  V 4.5 to 60.0V
Vout  V 1.23 to 57V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LM2575HV Order now 4     60     3.3     57     1     1     42     63     10     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog     DDPAK/TO-263 | 5
PDIP | 16
SOIC | 24
TO-220 | 5
TO-220 | 5    
Converter     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
16PDIP: 189 mm2: 8.69 x 21.7551 (PDIP | 16)
24SOIC: 160 mm2: 10.3 x 15.5 (SOIC | 24)
5TO-220: 86 mm2: 8.47 x 10.16 (TO-220 | 5)
5TO-220: 86 mm2: 8.51 x 10.16 (TO-220 | 5)    
LM2574 Order now 4     40     3.3     37     0.5     1     52     52     5     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog     PDIP | 8
SOIC | 14    
Converter     8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
14SOIC: 93 mm2: 10.325 x 8.9915 (SOIC | 14)    
LM2574HV Order now 4     60     3.3     37     0.5     1     52     52     5     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog     PDIP | 8
SOIC | 14    
Converter     8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
14SOIC: 93 mm2: 10.325 x 8.9915 (SOIC | 14)    
LM2575 Samples not available 4.75     40     1.23     37     1     1     47     58     5     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog     PDIP | 16     Converter     16PDIP: 181 mm2: 9.4 x 19.3 (PDIP | 16)    
LM2575-N Order now 4     40     3.3     37     1     1     42     63     10     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog