SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator - LM2676

LM2676 (ACTIVE)

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Recommended alternative parts

  • LM22676  -  Wider Input Voltage Range (6 To 42V), Fixed 500kHz
  • LM22676-Q1  -  Wider Input Voltage Range (6 To 42V), Fixed 500kHz
  • LM25576  -  Fast-Transient Response And Higher Switching Frequency (Up To 1MHz)
  • LM25576-Q1  -  Fast-Transient Response And Higher Switching Frequency (Up To 1MHz)
  • LM5576  -  75V Vin 3A Regulator
  • LM5576-Q1  -  75V Vin 3A Regulator

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$)
LM2676 LM2678 LM2596 TPS54340 TPS54360 LM2576 TPS54560 TPS54540 TPS54360-Q1 TPS54541 LM2677 TPS54561 TPS54340-Q1
1     1     1     1     1     1     1     1     1     1     1     1     1    
8     8     4.5     4.5     4.5     4     4.5     4.5     4.5     4.5     8     4.5     4.5    
40     40     40     42     60     40     60     42     60     42     40     60     42    
1.23     1.23     3.3     0.8     0.8     3.3     0.8     0.8     0.8     0.8     1.23     0.8     0.8    
37     37     37     41     58.8     37     58.8     41.1     58.8     41     37     59     41    
3     5     3     3.5     3.5     3     5     5     3.5     5     5     5     3.5    
Buck     Buck     Buck     Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck     Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck     Buck     Buck     Buck
Inverting Buck-Boost    
260     260       2500     2500       2500     2500     2500     2500     400     2500     2500    
4.5     7       5.5     5.5       7.5     7.5     5.5     7.5     7     7.5     5.5    
4.2     4.2       0.146     0.146       0.146     0.146     0.146     0.152     4.2     0.152     0.146    
91     91       98     98       98     98     98     98     91     98     98    
Fixed     Fixed       Fixed     Fixed       Fixed     Fixed     Fixed     Adjustable     Fixed     Adjustable     Fixed    
Internal     Internal     Internal     External     External     Internal     External     External     External     External     Internal     External     External    
Enable     Enable       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
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
Adjustable UVLO    
Enable     Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
Adjustable UVLO    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER         SIMPLE SWITCHER     SWIFT     SWIFT         SIMPLE SWITCHER        
Voltage Mode     Voltage Mode     Voltage Mode     Current Mode     Current Mode     Voltage Mode     Current Mode       Current Mode     Current Mode     Voltage Mode     Current Mode     Current Mode    
2     2       1     1       1     1     1     1     2     1     1    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Automotive     Catalog     Catalog     Catalog     Automotive    
-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 85     -40 to 125     -40 to 125     -40 to 125    
14VSON
7DDPAK/TO-263
7TO-220    
14VSON
7DDPAK/TO-263
7TO-220    
5DDPAK/TO-263
5TO-220    
8SO PowerPAD     8SO PowerPAD     5DDPAK/TO-263
5TO-220    
8SO PowerPAD     8SO PowerPAD     8SO PowerPAD     10WSON     14VSON
7DDPAK/TO-263
7TO-220    
10WSON     8SO PowerPAD    
1.80 | 1ku     2.20 | 1ku     1.80 | 1ku     1.68 | 1ku     2.10 | 1ku     1.19 | 1ku     2.30 | 1ku     1.95 | 1ku     2.75 | 1ku     2.30 | 1ku     2.25 | 1ku     3.00 | 1ku     2.20 | 1ku    
WEBENCH® LM2676
    Min   Max   Range  
  Vin V    8.00 – 40.00V  
  Vout V    1.21 – 40.00V  
  Iout A    ≤ 3A  
  Ambient Temp °C    -40 – 125°C  
Footprint BOM Cost Efficiency
 
   
 
 
'IC Cinx Cb Rfb1 Rfb2 D1 L1 Cout Cin '
 
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