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 LM25010 LM25010-Q1 LM2595 LM2598 LM2675 LM3100
1     1     1     1     1     1     1    
4.5     6     6     4.5     4.5     6.5     4.5    
40     42     42     40     40     40     36    
3.3     2.5     2.5     3.3     3.3     1.23     0.8    
15     37     37     37     37     37     7    
1     1     1     1     1     1     1.5    
Buck     Buck     Buck     Buck     Buck     Buck     Buck    
  1000     1000         260     1000    
  1.25     1.25         1.55     1.9    
  0.645     0.645         2.5     1    
  99     99         95     94    
  Adjustable     Adjustable         Fixed     Adjustable    
  Not Needed     Not Needed     Internal     Internal     Internal     Not Needed    
  Enable     Enable       Power Good     Enable     Enable
Tracking
Synchronous Rectification    
SIMPLE SWITCHER         SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER    
  Constant on-time (COT)     Constant on-time (COT)     Voltage Mode     Voltage Mode     Voltage Mode     COT with emulated ripple    
  2     2         1.5     1.5    
Catalog     Catalog     Automotive     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125
-40 to 150    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
24PDIP     10WSON
14HTSSOP    
14HTSSOP     5DDPAK/TO-263
5TO-220    
7DDPAK/TO-263
7TO-220    
16WSON
8PDIP
8SOIC    
20HTSSOP    
18.90 | 1ku     0.95 | 1ku     1.10 | 1ku     1.60 | 1ku     1.70 | 1ku     1.60 | 1ku     1.85 | 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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