Low Input Voltage, Step-Up DC-DC - LM2621

LM2621 (ACTIVE)

Low Input Voltage, Step-Up DC-DC

Recommended alternative parts

  • LM2623  -  Operates With Input Voltages As Low As 0.8V
  • LM2698  -  Wider Switch Voltage , Fixed Frequency
  • LM27313  -  Fixed Frequency , Smaller Package
  • LM27313-Q1  -  Fixed Frequency , Smaller Package
  • LM2733  -  1A 40V Switch Boost Regulator In SOT-23
  • LM3224  -  Wider Switch Voltage , Fixed Frequency

Parametrics Compare all products in Step-Up (Boost) Converter

 
Regulated Outputs (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Topology
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Switch Current Limit (Typ) (A)
Brand
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LM2621 LM2623 LM2698 LM27313 LM27313-Q1 LM2733 LM3224
1     1     1     1     1     1     1    
1.2     0.8     2.2     2.7     2.7     2.7     2.7    
14     14     12     14     14     14     7    
1.24     1.24     2.2     4     4     3      
14     14     17     28     28     40     20    
Boost
Flyback    
Boost
Flyback    
Boost     Boost     Boost     Boost     Boost    
2000     2000              
0.08     0.08     1.3     2.1     2.1     2.1     1.3    
2.85     2.2     1.35     1     1     1     2.6    
SIMPLE SWITCHER       SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER      
Enable     Enable              
Catalog     Catalog     Catalog     Catalog     Automotive     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
8VSSOP     14WSON
8VSSOP    
8VSSOP     5SOT-23     5SOT-23     5SOT-23     8VSSOP    
0.65 | 1ku     0.50 | 1ku     1.70 | 1ku     0.60 | 1ku     0.65 | 1ku     0.85 | 1ku     1.05 | 1ku    

Featured tools and software

WEBENCH® LM2621
    Min   Max   Range  
  Vin V    1.20 – 14.00V  
  Vout V    1.24 – 14.00V  
  Iout A    ≤ 2.85A  
  Ambient Temp °C    ≤ 100°C  
Footprint BOM Cost Efficiency
 
 
 
'U1 R1 C3 Rt Rfbb Rfbt D1 L1 Cin Cout Cff '
 
What are WEBENCH® tools?

Companion parts

Part # Name Product Family Comments
LM2704   Micropower Step-up DC/DC Converter with 550mA Peak Current Limit   LED DRIVER - BACKLIGHT    Low Power 500mA Switch Boost In SOT-23  
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