Integrated Power Supply 1A DC-DC Converter - LM2825

LM2825 (ACTIVE)

Integrated Power Supply 1A DC-DC Converter

Recommended alternative parts

  • LM25010  -  Thermally Enhanced Package, Higher Efficiency, Higher Operating Frequency & Better Transient Respons
  • LM25010-Q1  -  Thermally Enhanced Package, Higher Efficiency, Higher Operating Frequency & Better Transient Respons
  • LM2595  -  Thermally Enhanced Package, Higher Efficiency
  • LM2598  -  Thermally Enhanced Package, Higher Efficiency
  • LM2675  -  Thermally Enhanced Package, Higher Efficiency And Higher Operating Frequency
  • LM3100  -  Thermally Enhanced Package, Higher Efficiency, Higher Operating Frequency & Better Transient Respons

Description

The LM2825 is a complete 1A DC-DC Buck converter packaged in a 24-lead molded Dual-In-Line integrated circuit package.

Contained within the package are all the active and passive components for a high efficiency step-down (buck) switching regulator. Available in fixed output voltages of 3.3V, 5V and 12V, as well as two adjustable versions, these devices can provide up to 1A of load current with fully ensured electrical specifications.

Self-contained, this converter is also fully protected from output fault conditions, such as excessive load current, short circuits, or excessive temperatures.

Features

  • Minimum Design Time Required
  • 3.3V, 5V and 12V Fixed Output Versions
  • Two Adjustable Versions Allow 1.23V to 15V Outputs
  • Wide Input Voltage Range, up to 40V
  • Low-Power Standby Mode, IQ Typically 65 μA
  • High Efficiency, Typically 80%
  • ±4% Output Voltage Tolerance
  • Excellent Line and Load Regulation
  • TTL Shutdown Capability/Programmable Soft-Start
  • Thermal Shutdown and Current Limit Protection
  • −40°C to +85°C Ambient Temperature Range

Highlights

  • No External Components Required (Fixed Output Voltage Versions)
  • Integrated Circuit Reliability
  • MTBF Over 20 Million Hours
  • Radiated EMI Meets Class B Stipulated by CISPR 22
  • High Power Density, 35 W/in3
  • 24-pin PDIP Package Profile (1.25 x 0.54 x 0.26 Inches)

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Parametrics Compare all products in Step-Down (Buck) Converter

 
Regulated Outputs (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Topology
Switching Frequency (Max) (kHz)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Soft Start
Compensation
Special Features
Brand
Control Mode
Vref Accuracy (Typ) (%)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LM2825 LM2596 LM2575HV LM2575-N LM2576 LM2576HV TPS54340 TPS54360 TPS54260 TPS54240 TPS54560 LM22676 LM2675
1     1     1     1     1     1     1     1     1     1     1     1     1    
4.5     4.5     4     4     4     4     4.5     4.5     3.5     3.5     4.5     4.5     6.5    
40     40     60     40     40     60     42     60     60     42     60     42     40    
3.3     3.3     3.3     3.3     3.3     3.3     0.8     0.8     0.8     0.8     0.8     1.285     1.23    
15     37     37     37     37     37     41     58.8     58     39     58.8     37     37    
1     3     1     1     3     3     3.5     3.5     2.5     2.5     5     2     1    
Buck     Buck     Buck     Buck     Buck     Buck     Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck     Buck    
            2500     2500     2500     2500     2500     500     260    
      3.2         5.5     5.5     3.5     3.5     7.5     4.2     1.55    
      5         0.146     0.146     0.138     0.138     0.146     3.4     2.5    
            98     98     98     98     98     90     95    
            Fixed     Fixed     Adjustable     Adjustable     Fixed     Fixed     Fixed    
  Internal     Internal     Internal     Internal     Internal     External     External     External     External     External     Internal     Internal    
            Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Enable     Enable    
SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER         SWIFT     SWIFT     SWIFT     SIMPLE SWITCHER     SIMPLE SWITCHER    
  Voltage Mode     Voltage Mode     Voltage Mode     Voltage Mode     Voltage Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Voltage Mode     Voltage Mode    
            1     1     1     1     1     1.5     1.5    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
24PDIP     5DDPAK/TO-263
5TO-220    
16PDIP
5DDPAK/TO-263
5TO-220
24SOIC    
16PDIP
24SOIC
5DDPAK/TO-263
5TO-220    
5DDPAK/TO-263
5TO-220    
5DDPAK/TO-263
5TO-220    
8SO PowerPAD     8SO PowerPAD     10MSOP-PowerPAD
10VSON    
10MSOP-PowerPAD
10VSON    
8SO PowerPAD     7TO-263
8SO PowerPAD    
16WSON
8PDIP
8SOIC    
18.90 | 1ku     1.80 | 1ku     1.80 | 1ku     0.93 | 1ku     1.19 | 1ku     2.30 | 1ku     1.68 | 1ku     2.10 | 1ku     1.86 | 1ku     1.49 | 1ku     2.30 | 1ku     1.80 | 1ku     1.60 | 1ku    

Related end equipment

  • Simple High-Efficiency Step-Down (Buck) Regulator
  • On-Card Switching Regulators
  • Efficient Pre-Regulator for Linear Regulators
  • Distributed Power Systems
  • DC/DC Module Replacement

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