The LM2990 uses new circuit design techniques toprovide low dropout and low quiescent current. Thedropout voltage at 1A load current is typically 0.6Vand an ensured worst-case maximum of 1V over theentire operating temperature range. The quiescentcurrent is typically 1mA with 1A load current and aninput-output voltage differential greater than 3V. Aunique circuit design of the internal bias supply limitsthe quiescent current to only 9 mA (typical) when theregulator is in the dropout mode (VouT - VIN S 3V).Output voltage accuracy is ensured to 15% over load,and temperature extremes.
The LM2990 is short-circuit proof,and thermalshutdown includes hysteresis to enhance thereliability of the device when overloaded for anextended period of time. The LM2990 is available in a3-lead package and is rated for operation over theautomotive temperature range of -40C to +125C.
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
APPLICATIONS
· Post Switcher Regulator
· Local, On-Card, Regulation
· Battery Operated Equipment
(Picture: Pinout)
