Integrated Power Supply 1A DC-DC Converter - LM2825

LM2825 (ACTIVE)

Integrated Power Supply 1A DC-DC Converter

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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 TPS54340 TPS54360 TPS54560 TPS54540 LM22675 TPS54541 TPS54561 LM22680 LMR24210 LM22677 LM22679 LM22678
1     1     1     1     1     1     1     1     1     1     1     1     1    
4.5     4.5     4.5     4.5     4.5     4.5     4.5     4.5     4.5     4.5     4.5     4.5     4.5    
40     42     60     60     42     42     42     60     42     42     42     42     42    
3.3     0.8     0.8     0.8     0.8     1.285     0.8     0.8     1.285     0.8     1.285     1.285     1.285    
15     41     58.8     58.8     41.1     37     41     59     37     24     37     37     37    
1     3.5     3.5     5     5     1     5     5     2     1     5     5     5    
Buck     Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck    
  2500     2500     2500     2500     500     2500     2500     1000     1000     1000     500     500    
  5.5     5.5     7.5     7.5     1.5     7.5     7.5     2.8     1.8     7.1     7.1     7.1    
  0.146     0.146     0.146     0.146     3.4     0.152     0.152     3.4     0.7     3.4     3.4     3.4    
  98     98     98     98     90     98     98     90     94     90     90     90    
  Fixed     Fixed     Fixed     Fixed     Fixed     Adjustable     Adjustable     Adjustable     Adjustable     Fixed     Adjustable     Fixed    
  External     External     External     External     Internal     External     External     Internal     Not Needed     Internal     Internal     Internal    
  Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Enable     Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
Adjustable UVLO    
Enable     Enable
Synchronous Rectification    
Enable     Enable     Enable    
SIMPLE SWITCHER         SWIFT     SWIFT     SIMPLE SWITCHER         SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER    
  Current Mode     Current Mode     Current Mode       Voltage Mode     Current Mode     Current Mode     Voltage Mode     COT with emulated ripple     Voltage Mode     Voltage Mode     Voltage Mode    
  1     1     1     1     1.5     1     1     1.5     2     1.5     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 85     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
24PDIP     8SO PowerPAD     8SO PowerPAD     8SO PowerPAD     8SO PowerPAD     8SO PowerPAD     10WSON     10WSON     8SO PowerPAD     28DSBGA     7TO-263     7TO-263     7TO-263    
18.90 | 1ku     1.68 | 1ku     2.10 | 1ku     2.30 | 1ku     1.95 | 1ku     1.55 | 1ku     2.30 | 1ku     3.00 | 1ku     1.70 | 1ku     1.50 | 1ku     2.50 | 1ku     2.40 | 1ku     2.45 | 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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