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LT3032 Series - Dual 150mA Positive/Negative Low Noise Low Dropout Linear Regulator

The LT®3032 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. The regulators do not require the addition of ESR as is common with other regulators.

The regulators are offered as adjustable output devices with an output voltage down to the ±1.22V reference voltage or in fixed voltages of ±3.3V, ±5V, ±12V and ±15V. Internal protection circuitry includes reverse-output protection, current limiting and thermal limiting.

The LT3032 is available in a unique low profile 14-lead 4mm × 3mm × 0.75mm DFN package with exposed backside pads for each regulator, allowing optimum thermal performance.

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 Fixed Output Voltages: ±3.3V, ±5V, ±12V, ±15V Adjustable Outputs from ±1.22V 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 × 3mm × 0.75mm DFN Package Typical Application

Applications Battery-Powered Instruments Bipolar Power Supplies Low Noise Power Supplies Packaging

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