Extended Temperature 1A Fixed Output Negative Voltage Regulator / LDO - LM120

LM120 (ACTIVE)

Extended Temperature 1A Fixed Output Negative Voltage Regulator / LDO

 

Description

The LM120 series are three-terminal negative regulators with a fixed output voltage of −5V, −12V, and −15V, and up to 1.5A load current capability. Where other voltages are required, the LM137 and LM137HV series provide an output voltage range of −1.2V to −47V.

The LM120 need only one external component—a compensation capacitor at the output, making them easy to apply. Worst case specifications on output voltage deviation due to any combination of line, load or temperature variation assure satisfactory system operation.

Exceptional effort has been made to make the LM120 Series immune to overload conditions. The regulators have current limiting which is independent of temperature, combined with thermal overload protection. Internal current limiting protects against momentary faults while thermal shutdown prevents junction temperatures from exceeding safe limits during prolonged overloads.

Although primarily intended for fixed output voltage applications, the LM120 Series may be programmed for higher output voltages with a simple resistive divider. The low quiescent drain current of the devices allows this technique to be used with good regulation.

Features

  • Preset Output Voltage Error Less than ±3%
  • Preset Current Limit
  • Internal Thermal Shutdown
  • Operates with Input-Output Voltage Differential down to 1V
  • Excellent Ripple Rejection
  • Low Temperature Drift
  • Easily Adjustable to Higher Output Voltage

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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)
PSRR @ 100KHz (dB)
Additional Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LM120 LM137 LM337-N LM337L
1.5    1.5    1.5    0.1   
Fixed Output
Negative Output   
Adjustable Output
Negative Output   
Adjustable Output
Negative Output   
Adjustable Output
Negative Output   
-25    -40    -40    -40   
-7    -4.2    -4.2    -4.2   
-5
-12
-15   
     
-15    -37    -37    -37   
-5    -1.2    -1.2    -1.2   
1         
3000    3000    2400     
    35     
Overcurrent Protection
Thermal Shutdown   
Overcurrent Protection
Thermal Shutdown   
Overcurrent Protection
Thermal Shutdown   
Overcurrent Protection
Thermal Shutdown   
Catalog    Catalog    Catalog    Catalog   
-55 to 150    -55 to 150    -40 to 125
0 to 125
0 to125   
-25 to 100   
3TO    3TO    3TO
3TO-220
4SOT-223   
3TO-92
8SOIC   
9.46 | 1ku    8.95 | 1ku    0.61 | 1ku    0.26 | 1ku