TPS73601DBVR datasheet(16/48 Pages) TI2

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6 Detailed Description

6.1 Overview

The TPS736 low-dropout linear regulator operates down to an input voltage of 1.7V and supports output

voltages down to 1.2V while sourcing up to 400mA of load current. This linear regulator uses an NMOS pass

transistor with an integrated 4MHz charge pump to provide a dropout voltage of less than 200mV at full load

current. This unique architecture also permits stable regulation over a wide range of output capacitors. In fact,

the TPS736 device does not require any output capacitor for stability. The increased insensitivity to the output

capacitor value and type makes this linear regulator a good choice when powering a load where the effective

capacitance is unknown.

The TPS736 also features a noise reduction (NR) pin that allows for additional reduction of the output noise.

With a noise reduction capacitor of 0.01µF connected from the NR pin to GND, the TPS73615 output noise

can be as low as 12.75µVRMS. The low noise output featured by the TPS736 makes the device well-suited for

powering VCOs or any other noise sensitive load.

6.2 Functional Block Diagrams

Servo

Error

Amp

Ref

27 kΩ

8 kΩ

Current

Limit

Thermal

Protection

Bandgap

OUT

GND

4 MHz

Charge Pump

R + R = 80 kΩ

Figure 6-1. Fixed-Voltage Version

TPS736

SBVS038X – SEPTEMBER 2003 – REVISED MAY 2025

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TPS73601DBVR Datasheet(PDF) 16 Page - Texas Instruments