Part Number : LM2990
Function : Negative Low Dropout Regulator
Package : TO-220 Type
Maker : Texas Instruments
Pinouts : 
Description :
The LM2990 is a three-terminal, low dropout, 1 ampere negative voltage regulator available with fixed output voltages of −5, −5.2, −12, and −15V. The device uses new circuit design techniques to provide low dropout and low quiescent current.
The dropout voltage at 1A load current is typically 0.6V and an ensured worst-case maximum of 1V over the entire operating temperature range. The quiescent current is typically 1 mA with 1A load current and an input-output voltage differential greater than 3V.
A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (Vout− Vin ≤ 3V). Output voltage accuracy is ensured to ±5% over load,and temperature extremes.
The LM2990 is short-circuit proof, and thermal shutdown includes hysteresis to enhance the reliability of the device when overloaded for an extended period of time.
Features
• 5% Output Accuracy over Entire Operating Range
• Output Current in Excess of 1A
• Dropout Voltage Typically 0.6V at 1A Load
• Low Quiescent Current
• Internal Short Circuit Current Limit
• Internal Thermal Shutdown with Hysteresis
• Functional Complement to the LM2940 Series
Datasheet PDF Download : 
Others datasheet of same file :
LM2990S-12, LM2990S-12/NOPB, LM2990S-15,
LM2990S-15/NOPB, LM2990T-15
