Very Low Dropout/Ultra Low Noise 5 Outputs Voltage Regulator

The MC33765 is an ultra low noise, very low dropout voltage regulator with five independent outputs which is available in TSSOP−16 surface mount package.

The MC33765 is available in 2.8 V. The output voltage is the same for all five outputs but each output is capable of supplying different currents up to 150 mA for output 4. The device features a very low dropout voltage (0.11 V typical for maximum output current), very low quiescent current (5.0 μA maximum in OFF mode, 130 μA typical in ON mode) and one of the output (output 3) exhibits a very low noise level which allows the driving of noise sensitive circuitry. Internal current and thermal limiting protections are provided.

Features

• Five Independent Outputs at 2.8V Typical, Based Upon Voltage Version

• Internal Trimmed Voltage Reference

• VoutTolerance ±3.0 over the Temperature Range −40°C to +85°C

• Enable Input Pin (Logic−Controlled Shutdown) for Each of the Five

Outputs

• Common Enable Pin to Shutdown the Whole Circuit

• Very Low Dropout Voltage (0.11 V Typical for Output 1, 2, 3 and 5;

0.17 V Typical for Output 4 at Maximum Current)

• Very Low Quiescent Current (Maximum 5.0 μA in OFF Mode,

130 μA Typical in ON Mode)

• Ultra Low Noise for VR3 (30 μV RMS Max, 100 Hz < f < 100 kHz)

• Internal Current and Thermal Limit

• 100 nF for VR1, VR2, VR4 and VR5 and 1.0 μF for VR3 for Stability

• Supply Voltage Rejection: 60 dB (Typical) @ f = 1.0 kHz

• These are Pb−Free Devices*