EVB RT9069-33GQU-00 EN

RT9069-33GQU
Evaluation Board
your power partner.
36V, 2μA IQ, 200mA Low Dropout Voltage Linear Regulator
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.
Table of Contents
Purpose ................................................................................................................................................................. 1
Introduction............................................................................................................................................................ 2
Key Performance Summary Table .......................................................................................................................... 2
Bench Test Setup Conditions ................................................................................................................................. 3
Schematic, Bill of Materials & Board Layout ........................................................................................................... 4
More Information.................................................................................................................................................... 6
Important Notice for Richtek Evaluation Board ....................................................................................................... 6
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RT9069-33GQU
Evaluation Board
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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
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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
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Bench Test Setup Conditions
Headers Description and Placement
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
[email protected]
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.
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Schematic, Bill of Materials & Board Layout
EVB Schematic Diagram
GP2
GP1
VOUT
1
1
VIN
VOUT
R1
10K
VIN
U1
J1
VCC
GND
6
1
2
3
1
2
1
C1
1uF
2
NC
GND
NC
1
2
3
5
ON
OFF
C2
1uF
EN
VOUT
VOUT
EN
4
EN
1
EN
7
3
GND
TP2
RT9069
GP3
GP4
1
1
GND
GND
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
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PCB Layout
Top View
Bottom View
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More Information
For more information, please find the related datasheet or application notes from Richtek website
http://www.richtek.com.
Important Notice for Richtek Evaluation Board
THIS DOCUMENT IS FOR REFERENCE ONLY, NOTHING CONTAINED IN THIS DOCUMENT SHALL BE CONSTRUED AS RICHTEK’S WARRANTY, EXPRESS
OR IMPLIED, UNDER CONTRACT, TORT OR STATUTORY, WITH RESPECT TO THE PRESENTATION HEREIN. IN NO EVENT SHALL RICHTEK BE LIABLE TO
BUYER OR USER FOR ANY AND ALL DAMAGES INCLUDING WITHOUT LIMITATION TO DIRECT, INDIRECT, SPECIAL, PUNITIVE OR CONSEQUENTIAL
DAMAGES.
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