LM2990QML是TI公司的一款单通道LDO产品，LM2990QML是Negative Low Dropout Regulator，本页介绍了LM2990QML的产品说明、应用、特性等，并给出了与LM2990QML相关的TI元器件型号供参考。
LM2990QML - Negative Low Dropout Regulator - 单通道LDO - 线性稳压器(LDO) - TI公司（Texas Instruments，德州仪器）
The LM2990 is a three-terminal, low dropout, 1 ampere negative voltage regulator available with a fixed output voltage of −5V.
The LM2990 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 a 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.
- 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
