EVALUATION BOARD MANUAL
LDO
Low Iq LDO Regulator - EVK
BD7xxL2EFJ/FP/FP3-CE2
ROHM LDO IC Evaluation Kit
Abstract
This evaluation board manual describes the
usage of ROHM’s LDO IC evaluation kit (EVK)
called BD7xxL2EFJ/FP/FP3-CE2 EVK. This
document provides guidelines to quickly setup
the hardware for IC performance evaluation.
●
●
EVK Key Specifications (Across Model Versions)
Absolute maximum input voltage ……………45V
Output current capability……....................200mA
Output voltage……………………….....3.3V or 5V
Description of Supported ICs
This EVK is an LDO IC evaluation board. The
application of the board is to let a user evaluate
the performance of the BD7xxL2xxx-CE2 LDO.
The function of the board is to linearly regulate a
wide input DC voltage range to a fixed output DC
voltage level. There are two voltage levels (3.3V
and 5V) and 3 types of packages HTSOP-J8,
TO252-3 and SOT223-4F. The LDO IC features
low consumption current of 6uA, integrated
overcurrent and thermal shutdown protection,
low saturation voltage by using PMOS output
transistor and high output voltage accuracy of
±2%.
●
SOT223-4F
EVK Applications
This EVK is
only to be used as device under test for
research and development and the purpose
of IC evaluation.
only to be operated by trained professionals.
not intended to be assembled into other
products.
●
TO252-3
HTSOP-J8
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Evaluation Board Manual
Table of Contents
Cover Page............................................................................................................................................................................................1
●
Abstract ............................................................................................................................................................................. 1
●
Description of Supported ICs ............................................................................................................................................. 1
●
EVK Applications ............................................................................................................................................................... 1
●
EVK Key Specifications (Across Model Versions) ............................................................................................................. 1
1.
Introduction ............................................................................................................................................................................... 3
1.1
Operating instructions ........................................................................................................................................................... 3
1.2
Electrical Parameters / EVK Model Overview ....................................................................................................................... 3
2.
Hardware Description ............................................................................................................................................................... 4
2.1
Schematic ............................................................................................................................................................................. 4
2.1
Bill of Materials ...................................................................................................................................................................... 4
3.
Safety Instructions .................................................................................................................................................................... 5
3.1
Warnings ............................................................................................................................................................................... 5
3.2
Instructions for Safe Use ....................................................................................................................................................... 5
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BD7xxL2EFJ/FP/FP3-CE2 EVK
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1. Introduction
This EVK is an LDO IC evaluation board. The application of the board is to let a user evaluate the performance of the
BD7xxL2EFJ/FP/FP3-CE2 LDO. The purpose of the EVK is to allow the test and evaluation of the LDO IC in professional research
and development environments. This document provides guidelines to quickly setup the hardware for fast and easy LDO IC
performance evaluation. For further details about the LDO ICs and other ROHM products, please also consult the relevant product
datasheets and general information at http://www.rohm.com.
1.1 Operating instructions
A block diagram of the EVK application is depicted in Figure 1. In order to evaluate the board apply input voltage, connect the DC
load and measure the output voltage of the LDO. Note: when connecting laboratory equipment and other peripherals do not use
cables with length more than 3 meters due to EMC compliance.
Figure 1: EVK operating block diagram
1.2 Electrical Parameters / EVK Model Overview
This LDO EVK has 6 different model variants. The main difference between the variants is the package of the LDO and output
voltage level. Table 1 gives an overview of the different IC features and the according naming of the EVK.
Value
Parameter
Symbol
Min
Current
Iin
Voltage
Vin
Input
Current
Iout
Voltage
Vout
Output
LDO IC Package
Typ
Unit
EVK Model
uA
BD7xxL2xxx
Max
6
4.3
45
V
BD733L2xxx
5.8
45
V
BD750L2xxx
0
200
mA
BD7xxL2xxx
3.2
3.3
3.37
V
BD733L2xxx
4.9
5.0
5.1
V
BD750L2xxx
HTSOP-J8
BD7xxL2EFJ
TO252-3
BD7xxL2FP
SOT223-4F
BD7xxL2FP3
Table 1: EVK Model Variants
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2. Hardware Description
The schematic of the EVK is shown in Figure 2 and the Bill-of-Materials (BOM) is summarized Table 2.
Besides the LDO IC the main part of the EVK is the input supply decoupling capacitor and output filtering capacitor.
2.1 Schematic
Figure 2: EVK Schematic
2.1 Bill of Materials
No.
Value
Description
Size
Part number
Manufacturer
BD733L2EFJ-CE2
BD733L2EFJ
BD750L2EFJ-CE2
BD750L2EFJ
BD733L2FP-CE2
IC1
EVK Model
Low Iq LDO
BD733L2FP
ROHM
BD750L2FP-CE2
BD750L2FP
BD733L2FP3-CE2
BD733L2FP3
BD750L2FP3-CE2
BD750L2FP3
CIN
1uF
Capacitor, 50V, X5R
0603
C1608X5R1H105K080AB
TDK
all
COUT
4.7uF
Capacitor, 10V, X5R
0603
CGB3B1X5R1A475M055AC
TDK
all
Table 2: Bill of Materials
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3. Safety Instructions
3.1 Warnings
This product should be operated in a well ventilated environment and, if used inside a case, the case should not be
covered.
This product should be placed on a stable, flat, non-conductive surface in use and should not be contacted by conductive
items.
All peripherals used with the EVK should comply with relevant standards for the country of use and be marked accordingly
to ensure that safety and performance requirements are met.
Where peripherals are connected that do not include the cable or connector, the cable or connector used must offer
adequate insulation and operation in order that the requirements of the relevant performance and safety are met.
The connection of incompatible devices to the EVK may affect compliance or result in damage to the unit and invalidate the
warranty.
3.2 Instructions for Safe Use
Do not expose it to water, moisture or place on a conductive surface whilst in operation.
Do not expose it to temperatures, which are out of the operational range specified for hardware and components populating
the EVK.
Take care whilst handling to avoid mechanical or electrical damage to the printed circuit board and components
Avoid handling the printed circuit board while it is powered. Only handle by the edges to minimize the risk of electrostatic
discharge damage.
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Notes
1.
The information contained herein is subject to change without notice.
2.
Before you use our Products, please contact our sales representative and verify the latest specifications :
3.
Although ROHM is continuously working to improve product reliability and quality, semiconductors can
break down and malfunction due to various factors. Therefore, in order to prevent personal injury or fire
arising from failure, please take safety measures such as complying with the derating characteristics,
implementing redundant and fire prevention designs, and utilizing backups and fail-safe procedures.
ROHM shall have no responsibility for any damages arising out of the use of our Products beyond the
rating specified by ROHM.
4.
Examples of application circuits, circuit constants and any other information contained herein are
provided only to illustrate the standard usage and operations of the Products. The peripheral conditions
must be taken into account when designing circuits for mass production.
5.
The technical information specified herein is intended only to show the typical functions of and examples
of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to
use or exercise intellectual property or other rights held by ROHM or any other parties. ROHM shall have
no responsibility whatsoever for any dispute arising out of the use of such technical information.
6.
The Products are intended for use in general electronic equipment (i.e. AV/OA devices, communication,
consumer systems, gaming/entertainment sets) as well as the applications indicated in this document.
7.
The Products specified in this document are not designed to be radiation tolerant.
8.
For use of our Products in applications requiring a high degree of reliability (as exemplified below), please
contact and consult with a ROHM representative: transportation equipment (i.e. cars, ships, trains),
primary communication equipment, traffic lights, fire/crime prevention, safety equipment, medical
systems, servers, solar cells, and power transmission systems.
9.
Do not use our Products in applications requiring extremely high reliability, such as aerospace equipment,
nuclear power control systems, and submarine repeaters.
10. ROHM shall have no responsibility for any damages or injury arising from non-compliance with the
recommended usage conditions and specifications contained herein.
11. ROHM has used reasonable care to ensure the accuracy of the information contained in this document.
However, ROHM does not warrants that such information is error-free, and ROHM shall have no
responsibility for any damages arising from any inaccuracy or misprint of such information.
12. Please use the Products in accordance with any applicable environmental laws and regulations, such as
the RoHS Directive. For more details, including RoHS compatibility, please contact a ROHM sales office.
ROHM shall have no responsibility for any damages or losses resulting non-compliance with any
applicable laws or regulations.
13. When providing our Products and technologies contained in this document to other countries, you must
abide by the procedures and provisions stipulated in all applicable export laws and regulations, including
without limitation the US Export Administration Regulations and the Foreign Exchange and Foreign Trade
Act.
14. This document, in part or in whole, may not be reprinted or reproduced without prior consent of ROHM.
Thank you for your accessing to ROHM product information.
More detailed product information and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
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