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Linear- und Low-Dropout-Regler (LDO)

LP2953

AKTIV

Low-Dropout-Spannungsregler, 250 mA, 30 V, mit Power-Good- und Aktivierungsfunktion

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Datenblatt

LP2953

AKTIV
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Produktdetails

Rating Catalog Vin (max) (V) 30 Vin (min) (V) -20 Iout (max) (A) 0.25 Output options Adjustable Output Vout (max) (V) 29 Vout (min) (V) 1.23 Noise (µVrms) 80 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 0.13 Features Enable, Output discharge, Power good Thermal resistance θJA (°C/W) 42 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 470 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 30 Vin (min) (V) -20 Iout (max) (A) 0.25 Output options Adjustable Output Vout (max) (V) 29 Vout (min) (V) 1.23 Noise (µVrms) 80 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 0.13 Features Enable, Output discharge, Power good Thermal resistance θJA (°C/W) 42 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 470 Operating temperature range (°C) -40 to 125
SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm)
  • 2.3-V to 30-V Input Voltage Range
  • Output Voltage Adjusts from 1.23 V to 29 V
  • 250-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Reverse Battery-Input Protection
  • 50-mA (Typical) Automatic Output Discharge
  • LP2953 Versions Only
    • Auxiliary Comparator Included With CMOS-
      and TTL-Compatible Output Levels. Can Be
      Used for Fault Detection, Low-Input Line
      Detection, and so on.
  • 2.3-V to 30-V Input Voltage Range
  • Output Voltage Adjusts from 1.23 V to 29 V
  • 250-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Reverse Battery-Input Protection
  • 50-mA (Typical) Automatic Output Discharge
  • LP2953 Versions Only
    • Auxiliary Comparator Included With CMOS-
      and TTL-Compatible Output Levels. Can Be
      Used for Fault Detection, Low-Input Line
      Detection, and so on.

The LP2952 and LP2953 are micropower voltage regulators with very low quiescent current (130 µA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light load and 470 mV at 250-mA load current). They are ideally suited for battery-powered systems. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life.

The LP2952 and LP2953 retain all the desirable characteristics of the LP2951, but offer increased output current, additional features, and an improved shutdown function.

The automatic output discharge pulls the output down quickly when the shutdown is activated.

The error flag goes low if the output voltage drops out of regulation.

Reverse battery-input protection is provided.

The internal voltage reference is made available for external use, providing a low temperature coefficient (20 ppm/°C) reference with very good line (0.03%) and load (0.04%) regulation.

The LP2952 and LP2953 are micropower voltage regulators with very low quiescent current (130 µA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light load and 470 mV at 250-mA load current). They are ideally suited for battery-powered systems. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life.

The LP2952 and LP2953 retain all the desirable characteristics of the LP2951, but offer increased output current, additional features, and an improved shutdown function.

The automatic output discharge pulls the output down quickly when the shutdown is activated.

The error flag goes low if the output voltage drops out of regulation.

Reverse battery-input protection is provided.

The internal voltage reference is made available for external use, providing a low temperature coefficient (20 ppm/°C) reference with very good line (0.03%) and load (0.04%) regulation.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt LP295x Adjustable Micropower Low-Dropout Voltage Regulators datasheet (Rev. F) PDF | HTML 11.03.2015
Anwendungshinweis AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 23.04.2013
Anwendungshinweis Linear and Switching Voltage Regulator Fundamental Part 1 21.03.2007

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