1A Low Dropout Adjustable Regulator - LM2941

LM2941 (ACTIVE)

1A Low Dropout Adjustable Regulator

Description

The LM2941 positive voltage regulator features the ability to source 1A of output current with a typical dropout voltage of 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground pin current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an input-output differential of 5V is therefore only 30mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3V).

Designed also for vehicular applications, the LM2941 and all regulated circuitry are protected from reverse battery installations or two-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. Familiar regulator features such as short circuit and thermal overload protection are also provided.

Features

  • WSON Space Saving Package
  • Output Voltage Adjustable From 5V to 20V
  • Dropout Voltage Typically 0.5V @ IO = 1A
  • Output Current in Excess of 1A
  • Trimmed Reference Voltage
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested
  • TTL, CMOS Compatible ON/OFF Switch

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Parametrics Compare all products in Single Channel LDO

 
Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
PSRR @ 100KHz (dB)
Output Capacitor Type
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LM2941 LP38690 LP38692 LP3878-ADJ
1     1     1     0.8    
Adjustable Output     Fixed Output     Fixed Output     Adjustable Output    
-15     2.7     2.7     2.5    
26     10     10     16    
  1.8
2.5
3.3
5    
1.8
2.5
3.3
5    
 
5     1.8     1.8     1    
20     5     5     5.5    
10     0.055     0.055     5.5    
500     450
650
800
950    
450
650
800
950    
475    
5     5     5     3    
67     50     50     35    
  Ceramic     Ceramic     Ceramic    
Military     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125      
5DDPAK/TO-263
5TO-220
8WSON    
3TO-252
6WSON    
5SOT-223
6WSON    
8SO PowerPAD
8WSON    
  0.53 | 1ku     0.53 | 1ku     0.80 | 1ku    

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