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36V, 2μA IQ, 200mA Low Dropout Voltage Linear Regulator

EVB_RT9069-33GQU

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The RT9069 is a low-dropout (LDO) voltage regulators with enable function offering the benefits of high input voltage, low-dropout voltage, low-power consumption, and miniaturized packaging. The features of low quiescent current as low as 2μA and zero disable current is ideal for powering the battery equipment to a longer service life. The RT9069 is stable with the ceramic output capacitor over its wide input range from 3.5V to 36V and the entire range of output load current (0mA to 200mA).

Purpose

The RT9069 is stable with the ceramic output capacitor over its wide input range from 3.5V to 36V and the entire range of output load current (0mA to 200mA).This document explains the function and use of the RT9069 evaluation board (EVB), and provides information to enable operation, modification of the evaluation board and circuit to suit individual requirements.


Introduction

General Product Information

The RT9069 is a low-dropout (LDO) voltage regulators with enable function offering the benefits of high input voltage, low-dropout voltage, low-power consumption, and miniaturized packaging.

The features of low quiescent current as low as 2μA and zero disable current is ideal for powering the battery equipment to a longer service life. The RT9069 is stable with the ceramic output capacitor over its wide input range from 3.5V to 36V and the entire range of output load current (0mA to 200mA).


Product Feature

  • 2μA Ground Current at no Load
  • ±2% Output Accuracy
  • 200mA Output Current with EN
  • Zero Disable Current
  • Maximum Operating Input Voltage 36V
  • Dropout Voltage : 0.2V at 10mA / VIN 5V
  • Stable with Ceramic or Tantalum Capacitor
  • Current Limit Protection
  • Over-Temperature Protection
  • RoHS Compliant and Halogen Free

 

Key Performance Summary Table

Key Features

Evaluation Board Number : PCB031_V1

Input Voltage Range

3.5V to 36V

Max Output Current

200mA

Default Output Voltage

3.3V

Default Marking & Package Type

RT9069-33GQU, UDFN-6L1.6x1.6



Bench Test Setup Conditions

Headers Description and Placement

Technical Document Image Preview

Please carefully inspect the EVB IC and external components, comparing them to the following Bill of Materials, to ensure that all components are installed and undamaged. If any components are missing or damaged during transportation, please contact the distributor or send e-mail to evb_service@richtek.com


Test Points

The EVB is provided with the test points and pin names listed in the table below.

Test point/

Pin name

Signal

Comment (expected waveforms or voltage levels on test points)

VCC

Input voltage

The RT9069 is a high input voltage linear regulator designed especially for low external component systems. The input voltage range is from 3.5V to 36V.

EN

Enable Control Input.

The RT9069 delivers the output power when it is set to enable state. When it works in disable state, there is no output power and the operation quiescent current is zero.

VOUT

Output of the Regulator.

The RT9069 builds in a P-MOSFET output transistor which provides a low switch-on resistance for low dropout voltage applications.

GND

Ground

Ground.



Power-up & Measurement Procedure

1. Connect input power (3.5V < VIN < 36V) and input ground to VIN and GND test pins respectively.

2. Connect positive end and negative terminals of load to VOUT and GND test pins respectively.

3. There is a 3-pin header “EN” for enable control. To use a jumper at “H” option to tie EN test pin to input power VIN for enabling the device. Inversely, to use a jumper at “L” option to tie EN test pin and ground GND for disabling the device.

4. Verify the output voltage (approximately 1.0V) between VOUT and GND.

5. Connect an external load up to 50mA to the VOUT and GND terminals and verify the output voltage and current.



Schematic, Bill of Materials & Board Layout

EVB Schematic Diagram

Technical Document Image Preview



Bill of Materials

Reference

Qty

Part Number

Description

Package

Manufacture

U1

1

RT9069-33GQU

LDO

UDFN-6L 1.6x1.6

RICHTEK

C1, C2

2

GRM31CR71E106KA12L

1µF/50V/X7R

C-1206

MURATA

R1

1

10k

R-0603



PCB Layout

Technical Document Image Preview

Top View

Technical Document Image Preview

Bottom View

Title Last Update Share Download
Evaluation Board User Guide 2015/10/26
Bill of Materials 2015/10/26
Gerber File 2015/10/26
Schematic 2015/10/26
RT9069

36V, 2μA IQ, Peak 200mA Low Dropout Voltage Linear Regulator

RT9069

The RT9069 is a low-dropout (LDO) voltage regulators with enable function offering the benefits of high input voltage, low-dropout voltage, low-power consumption, and miniaturized packaging.

The features of low quiescent current as low as 2μA and zero disable current is ideal for powering the battery equipment to a longer service life. The RT9069 is stable with the ceramic output capacitor over its wide input range from 3.5V to 36V and the entire range of output load current.

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EVB_RT9069-33GQU Not available Buy from Distributor
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