LM2990SX-5.0/NOPB Part Information

Details for LM2990SX-5.0/NOPB by Texas Instruments

Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators

Part Description

The LM2990 is a three-terminal, low-dropout, 1-A negative voltage regulator available with fixed output voltages of −5 V, −5.2 V, −12 V, and −15 V. The LM2990 uses circuit design techniques to provide low-dropout and low-quiescent current. The dropout voltage at 1-A load current is typically 0.6 V and an ensured worst-case maximum of 1 V over the entire operating temperature range. The quiescent current is typically 1 mA with 1-A load current and an input-output voltage differential greater than 3 V. 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 ≤ 3 V). Output voltage accuracy is ensured to ±5% over load and temperature extremes. The LM2990 also implements short-circuit proof, and thermal shutdown includes hysteresis to enhance the reliability of the device when overloaded for an extended period of time. All these features make the LM2990 an ideal negative power supply suited for dual supply systems. The device may also be used as fixed or adjustable current sink load. The LM2990 is available in two 3-pin packages and is rated for operation over the junction temperature range of −40°C to 125°C.

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Part Features

  • 5% Output Accuracy over Entire Operating Range
  • Dropout Voltage Typically 0.6 V at 1-A Load
  • Fixed Output Voltages: u22125 V, u22125.2 V, u221212 V, and u221215 V
  • Functional Complement to the LM2940 Series
  • Input Voltage: u201326 V to u20136 V
  • Internal Short-Circuit Current Limit
  • Internal Thermal Shutdown with Hysteresis
  • Low Quiescent Current
  • Output Current in Excess of 1 A

Part Specifications

Output Type Fixed
Input Voltage Min -26V
Input Voltage Max 300mV
Fixed Output Voltage Nom. -5V
Adjustable Output Voltage Min -
Adjustable Output Voltage Max -
Output Current 1A
RoHS Compliant

Alternative Part Descriptions

  • LDO VOLTAGE REGULATOR, -5V, 1A, TO-263; Output Type:Fixed; Input Voltage Min:-26V; Input Voltage Max:300mV; Fixed Output Voltage Nom.:-5V; Adjustable Output Voltage Min:-; Adjustable Output Voltage Max:-; Output Current:1A RoHS Compliant: Yes | Newark Electronics
  • 1-A, negative low-dropout voltage regulator | Texas Instruments

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