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Gestión de la energía
Reguladores lineales y de baja salida (LDO)

LP2952-N

ACTIVO

Regulador de voltaje de 250 mA, 30 V, de baja caída, con señal power good y habilitación

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LP2952-N

ACTIVO
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Detalles del producto

Output options Adjustable Output Iout (max) (A) 0.25 Vin (max) (V) 30 Vin (min) (V) -20 Vout (max) (V) 29 Vout (min) (V) 1.23 Rating Catalog Noise (µVrms) 80 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 0.13 Thermal resistance θJA (°C/W) 77 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Output discharge, Power good Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 470 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 0.25 Vin (max) (V) 30 Vin (min) (V) -20 Vout (max) (V) 29 Vout (min) (V) 1.23 Rating Catalog Noise (µVrms) 80 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 0.13 Thermal resistance θJA (°C/W) 77 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Output discharge, Power good Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 470 Operating temperature range (°C) -40 to 125
SOIC (D) 16 59.4 mm² 9.9 x 6
  • 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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Documentación técnica

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Tipo Título Fecha
* Data sheet LP295x Adjustable Micropower Low-Dropout Voltage Regulators datasheet (Rev. F) PDF | HTML 11 mar 2015
Application note AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 23 abr 2013
More literature Die D/S LP2952I-3.3-MDC MCD6010A Adjustable Micropower Low-Dropout Voltage Regu 24 oct 2012
More literature Die D/S LP2952I-3.3-MDC Adjustable micropower low-dropout voltage regulators 20 sep 2012
Application note Battery Charging 21 mar 2007
Application note Linear and Switching Voltage Regulator Fundamental Part 1 21 mar 2007

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