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LT3032 Voltage Linear Regulator


Linear Technology's linear regulators for battery-powered instruments, bipolar or low-noise supplies


LT3032-Voltage Linear Regulator Linear Technology's LT3032 is a dual, low-noise, positive and negative low-dropout voltage linear regulator. Each regulator delivers up to 150mA with a typical 300mV dropout voltage. Each regulator’s quiescent current is low (30µA operating and <3µA in shutdown) and well controlled in dropout, making it an excellent choice for battery-powered circuits.

Another key feature of the LT3032 is low output noise. Adding an external 10nF bypass capacitor to each regulator reduces output noise to 20µVRMS/30µVRMS over a 10Hz to 100kHz bandwidth. The LT3032 is stable with minimum output capacitors of 2.2µF. These regulators do not require the addition of ESR, which is common with other regulators.

Internal protection circuitry includes reverse output protection, current limiting, and thermal limiting. Each regulator is offered as an adjustable output device with an output voltage down to the ±1.22V reference voltages. Datasheet

Features
  • Low noise: 20µVRMS (positive) and 30µVRMS (negative)
  • Low quiescent current: 30µA/channel
  • Wide input voltage range: ±2.3V to ±20V
  • Output current: ±150mA
  • Low shutdown current: <3µA total (typical)
  • Low dropout voltage: 300mV/channel
  • Adjustable outputs from ±1.22 to ±20V
  • No protection diodes needed
  • Stable with 2.2µF output capacitors
  • Stable with ceramic, tantalum, or aluminum capacitors
  • Starts into reverse output voltage
  • Current limit and thermal limit
  • Low profile 14-lead 4mm x 3mm x 0.75mm DFN package
Product Training Module (PTM): LT3032 - 150mA Dual Positive/Negative Low Noise LDO Product Training Module (PTM):
LT3032 - 150mA Dual Positive/Negative Low Noise LDO

Digi-Key P/N Manufacturers P/N Description Package
LT3032EDE#PBF-ND LT3032EDE#PBF IC REG LDO ADJ .15A DUAL 14DFN 14-DFN
LT3032IDE#PBF-ND LT3032IDE#PBF IC REG LDO ADJ .15A DUAL 14DFN 14-DFN