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線性與低壓差 (LDO) 穩壓器

LP2989

現行

具電源良好與啟用功能的 500-mA、16-V、低壓降電壓穩壓器

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TPS7A26 現行 具有電源正常指示的 500mA、18V、超低 IQ、高準確度、可調整低壓差電壓穩壓器 This is a 500-mA LDO with power good and lower IQ (2.5 μA).

LP2989

現行
產品規格表 立即訂購

產品詳細資料

Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 16 Vin (min) (V) 2.1 Vout (max) (V) 5 Vout (min) (V) 2.5 Fixed output options (V) 2.5, 2.8, 3, 3.3, 5 Rating Catalog Noise (µVrms) 18 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 0.11 Thermal resistance θJA (°C/W) 35, 114, 156 Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 310 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 16 Vin (min) (V) 2.1 Vout (max) (V) 5 Vout (min) (V) 2.5 Fixed output options (V) 2.5, 2.8, 3, 3.3, 5 Rating Catalog Noise (µVrms) 18 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 0.11 Thermal resistance θJA (°C/W) 35, 114, 156 Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 310 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGN) 8 16 mm² 4 x 4
  • 2.1-V to 16-V Input Voltage Range
  • 2.5-V to 5-V Fixed Output Voltage Options
  • Ultra-Low Dropout Voltage
  • 500-mA Continuous Output Current
  • Very Low Output Noise With External Capacitor
  • < 0.8-µA Quiescent Current When Shutdown
  • Low Ground Pin Current at All Loads
  • 0.75% Output Voltage Accuracy (A Grade)
  • High Peak Current Capability (800-mA typical)
  • Overtemperature and Overcurrent Protection
  • −40°C to 125°C Junction Temperature Range
  • 2.1-V to 16-V Input Voltage Range
  • 2.5-V to 5-V Fixed Output Voltage Options
  • Ultra-Low Dropout Voltage
  • 500-mA Continuous Output Current
  • Very Low Output Noise With External Capacitor
  • < 0.8-µA Quiescent Current When Shutdown
  • Low Ground Pin Current at All Loads
  • 0.75% Output Voltage Accuracy (A Grade)
  • High Peak Current Capability (800-mA typical)
  • Overtemperature and Overcurrent Protection
  • −40°C to 125°C Junction Temperature Range

The LP2989 is a fixed-output 500-mA precision LDO regulator designed for use with ceramic output capacitors.

Output noise can be reduced to 18 µV (typical) by connecting an external 10-nF capacitor to the bypass pin.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2989 delivers superior performance:

  • Dropout Voltage: Typically 310 mV at 500-mA load, and 1 mV at 100-µA load.
  • Ground Pin Current: Typically 3 mA at 500-mA load, and 110 µA at 100-µA load.
  • Sleep Mode: The LP2989 draws less than 0.8-µA quiescent current when SHUTDOWN pin is pulled low.
  • Error Flag: The built-in error flag goes low when the output drops approximately 5% below nominal.
  • Precision Output: Output voltage accuracy is 0.75% (A grade) and 1.25% (standard grade) at room temperature.

For output voltages < 2 V, see LP2989LV (SNVS086) data sheet.

The LP2989 is a fixed-output 500-mA precision LDO regulator designed for use with ceramic output capacitors.

Output noise can be reduced to 18 µV (typical) by connecting an external 10-nF capacitor to the bypass pin.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2989 delivers superior performance:

  • Dropout Voltage: Typically 310 mV at 500-mA load, and 1 mV at 100-µA load.
  • Ground Pin Current: Typically 3 mA at 500-mA load, and 110 µA at 100-µA load.
  • Sleep Mode: The LP2989 draws less than 0.8-µA quiescent current when SHUTDOWN pin is pulled low.
  • Error Flag: The built-in error flag goes low when the output drops approximately 5% below nominal.
  • Precision Output: Output voltage accuracy is 0.75% (A grade) and 1.25% (standard grade) at room temperature.

For output voltages < 2 V, see LP2989LV (SNVS086) data sheet.
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* Data sheet LP2989 Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors datasheet (Rev. O) PDF | HTML 2015年 3月 10日

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