Datasheet LT3032 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Dual 150mA Positive/Negative Low Noise Low Dropout Linear Regulator |
| Páginas / Página | 24 / 1 — FEATURES. DESCRIPTION. Low Noise: 20µVRMS (Positive) and. 30µVRMS … |
| Formato / tamaño de archivo | PDF / 410 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. Low Noise: 20µVRMS (Positive) and. 30µVRMS (Negative). Low Quiescent Current: 30µA/Channel
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Versión de texto del documento
LT3032 Series Dual 150mA Positive/Negative Low Noise Low Dropout Linear Regulator
FEATURES DESCRIPTION
n
Low Noise: 20µVRMS (Positive) and
The LT®3032 is a dual, low noise, positive and negative low
30µVRMS (Negative)
dropout voltage linear regulator. Each regulator delivers n
Low Quiescent Current: 30µA/Channel
up to 150mA with a typical 300mV dropout voltage. Each n
Wide Input Voltage Range: ±2.3V to ±20V
regulator’s quiescent current is low (30µA operating and n
Output Current: ±150mA
<3µA in shutdown) and well-controlled in dropout, making n
Low Shutdown Current: <3µA Total (Typical)
it an excellent choice for battery-powered circuits. n
Low Dropout Voltage: 300mV/Channel
Another key feature of the LT3032 is low output noise. n Fixed Output Voltages: ±3.3V, ±5V, ±12V, ±15V Adding an external 10nF bypass capacitor to each regulator n Adjustable Outputs from ±1.22V to ±20V reduces output noise to 20µV n RMS/30µVRMS over a 10Hz to No Protection Diodes Needed 100kHz bandwidth. The LT3032 is stable with minimum n Stable with 2.2µF Output Capacitors output capacitors of 2.2µF. The regulators do not require n Stable with Ceramic, Tantalum or Aluminum Capacitors the addition of ESR as is common with other regulators. n Starts into Reverse Output Voltage n Current Limit and Thermal Limit The regulators are offered as adjustable output devices with n Low Profile 14-Lead 4mm × 3mm × 0.75mm an output voltage down to the ±1.22V reference voltage or DFN Package in fixed voltages of ±3.3V, ±5V, ±12V and ±15V. Internal protection circuitry includes reverse-output protection, current limiting and thermal limiting.
APPLICATIONS
The LT3032 is available in a unique low profile 14-lead n Battery-Powered Instruments 4mm × 3mm × 0.75mm DFN package with exposed back- n Bipolar Power Supplies side pads for each regulator, allowing optimum thermal n Low Noise Power Supplies performance. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Dual Polarity Low Noise 150mA Power Supply 10Hz to 100kHz Output Noise
5V OUT AT 150mA INP OUTP 20µVRMS NOISE 5.4V TO 10µF LT3032-5 0.01µF OUTP 20V 10µF 20µV 100µV/DIV RMS <0.25V = OFF >2V = ON SHDNP BYPP SHDNN GND BYPN –5.4V TO 10µF 0.01µF 10µF OUTN –20V 30µVRMS –5V OUT AT –150mA 100µV/DIV INN OUTN 30µV 3032 TA01 RMS NOISE 1mS/DIV 3032 TA02a 3032ff For more information www.linear.com/LT3032 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n
Low Noise: 20µVRMS (Positive) and
The LT®3032 is a dual, low noise, positive and negative low
30µVRMS (Negative)
dropout voltage linear regulator. Each regulator delivers n
Low Quiescent Current: 30µA/Channel
up to 150mA with a typical 300mV dropout voltage. Each n
Wide Input Voltage Range: ±2.3V to ±20V
regulator’s quiescent current is low (30µA operating and n
Output Current: ±150mA
<3µA in shutdown) and well-controlled in dropout, making n
Low Shutdown Current: <3µA Total (Typical)
it an excellent choice for battery-powered circuits. n
Low Dropout Voltage: 300mV/Channel
Another key feature of the LT3032 is low output noise. n Fixed Output Voltages: ±3.3V, ±5V, ±12V, ±15V Adding an external 10nF bypass capacitor to each regulator n Adjustable Outputs from ±1.22V to ±20V reduces output noise to 20µV n RMS/30µVRMS over a 10Hz to No Protection Diodes Needed 100kHz bandwidth. The LT3032 is stable with minimum n Stable with 2.2µF Output Capacitors output capacitors of 2.2µF. The regulators do not require n Stable with Ceramic, Tantalum or Aluminum Capacitors the addition of ESR as is common with other regulators. n Starts into Reverse Output Voltage n Current Limit and Thermal Limit The regulators are offered as adjustable output devices with n Low Profile 14-Lead 4mm × 3mm × 0.75mm an output voltage down to the ±1.22V reference voltage or DFN Package in fixed voltages of ±3.3V, ±5V, ±12V and ±15V. Internal protection circuitry includes reverse-output protection, current limiting and thermal limiting.
APPLICATIONS
The LT3032 is available in a unique low profile 14-lead n Battery-Powered Instruments 4mm × 3mm × 0.75mm DFN package with exposed back- n Bipolar Power Supplies side pads for each regulator, allowing optimum thermal n Low Noise Power Supplies performance. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Dual Polarity Low Noise 150mA Power Supply 10Hz to 100kHz Output Noise
5V OUT AT 150mA INP OUTP 20µVRMS NOISE 5.4V TO 10µF LT3032-5 0.01µF OUTP 20V 10µF 20µV 100µV/DIV RMS <0.25V = OFF >2V = ON SHDNP BYPP SHDNN GND BYPN –5.4V TO 10µF 0.01µF 10µF OUTN –20V 30µVRMS –5V OUT AT –150mA 100µV/DIV INN OUTN 30µV 3032 TA01 RMS NOISE 1mS/DIV 3032 TA02a 3032ff For more information www.linear.com/LT3032 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts