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線性與低壓差 (LDO) 穩壓器

LP38841-ADJ

現行

具啟用功能的 800-mA、低 VIN (0.635-V) 可調式超低壓降電壓穩壓器

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產品規格表

LP38841-ADJ

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.635 Iout (max) (A) 0.8 Output options Adjustable Output Vout (max) (V) 1.5 Vout (min) (V) 0.56 Noise (µVrms) 90 PSRR at 100 KHz (dB) 29 Iq (typ) (mA) 32 Features Enable Thermal resistance θJA (°C/W) 43 Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.635 Iout (max) (A) 0.8 Output options Adjustable Output Vout (max) (V) 1.5 Vout (min) (V) 0.56 Noise (µVrms) 90 PSRR at 100 KHz (dB) 29 Iq (typ) (mA) 32 Features Enable Thermal resistance θJA (°C/W) 43 Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • Ideal for Conversion from 1.8V or 1.5V Inputs
  • Designed for Use with Low ESR Ceramic Capacitors
  • Ultra Low Dropout Voltage (75mV @ 0.8A Typ)
  • 0.56V to 1.5V Adjustable Output Range
  • Load Regulation of 0.1%/A (Typ)
  • 30nA Quiescent Current in Shutdown (Typ)
  • Low Ground Pin Current at all Loads
  • Over Temperature/Over Current Protection
  • Available in 8 Lead SO
  • −40°C to +125°C Junction Temperature Range
  • UVLO Disables Output when VBIAS < 3.8V

All trademarks are the property of their respective owners.

  • Ideal for Conversion from 1.8V or 1.5V Inputs
  • Designed for Use with Low ESR Ceramic Capacitors
  • Ultra Low Dropout Voltage (75mV @ 0.8A Typ)
  • 0.56V to 1.5V Adjustable Output Range
  • Load Regulation of 0.1%/A (Typ)
  • 30nA Quiescent Current in Shutdown (Typ)
  • Low Ground Pin Current at all Loads
  • Over Temperature/Over Current Protection
  • Available in 8 Lead SO
  • −40°C to +125°C Junction Temperature Range
  • UVLO Disables Output when VBIAS < 3.8V

All trademarks are the property of their respective owners.

The LP38841-ADJ is a high current, fast response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low Vin voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in the SO package.

Dropout Voltage: 75 mV (typ) @ 0.8A load current.

Quiescent Current: 30 mA (typ) at full load.

Shutdown Current: 30 nA (typ) when S/D pin is low.

Precision Reference Voltage: 1.5% room temperature accuracy.

The LP38841-ADJ is a high current, fast response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low Vin voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in the SO package.

Dropout Voltage: 75 mV (typ) @ 0.8A load current.

Quiescent Current: 30 mA (typ) at full load.

Shutdown Current: 30 nA (typ) when S/D pin is low.

Precision Reference Voltage: 1.5% room temperature accuracy.
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* Data sheet LP38841-ADJ 0.8A Ultra Low Drpout Adj Lnr Reg Stable w/Ceramic Output Caps datasheet (Rev. C) 2013年 4月 2日

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