APPLICATION MANUAL
SMALL PACKAGE
VOLTAGE REGULATOR
RQ5RW SERIES
NO. EA-048-9803
ELECTRONIC DEVICES DIVISION
NOTICE
1. The products and the product specifications described in this application manual are subject to change or
discontinuation of production without notice for reasons such as improvement. Therefore, before deciding to
use the products, please refer to Ricoh sales representatives for the latest information thereon.
2. This application manual may not be copied or otherwise reproduced in whole or in part without prior written
consent of Ricoh.
3. Please be sure to take any necessary formalities under relevant laws or regulations before exporting or
otherwise taking out of your country the products or the technical information described herein.
4. The technical information described in this application manual shows typical characteristics of and example
application circuits for the products. The release of such information is not to be construed as a warranty of or a
grant of license under Ricoh's or any third party's intellectual property rights or any other rights.
5. The products listed in this document are intended and designed for use as general electronic components in
standard applications (office equipment, computer equipment, measuring instruments, consumer electronic
products, amusement equipment etc.). Those customers intending to use a product in an application requiring
extreme quality and reliability, for example, in a highly specific application where the failure or misoperation of
the product could result in human injury or death (aircraft, spacevehicle, nuclear reactor control system, traffic
control system, automotive and transportation equipment, combustion equipment, safety devices, life support
system etc.) should first contact us.
6. We are making our continuous effort to improve the quality and reliability of our products, but semiconductor
products are likely to fail with certain probability. In order prevent any injury to persons or damages to property
resulting from such failure, customers should be careful enough to incorporate safety measures in their design,
such as redundancy feature, fire-containment feature and fail-safe feature. We do not assume any liability or
responsibility for any loss or damage arising from misuse or inappropriate use of the products.
7. Anti-radiation design is not implemented in the products described in this application manual.
8. Please contact Ricoh sales representatives should you have any questions or comments concerning the
products or the technical information.
June 1995
RQ5RW SERIES
APPLICATION MANUAL
CONTENTS
OUTLINE
......................................................................................................
1
FEATURES
...................................................................................................
1
APPLICATIONS
.............................................................................................
1
BLOCK DIAGRAM
.........................................................................................
2
SELECTION GUIDE
.......................................................................................
2
PIN CONFIGURATION
...................................................................................
3
PIN DESCRIPTION
........................................................................................
3
ABSOLUTE MAXIMUM RATINGS
...................................................................
3
ELECTRICAL CHARACTERISTICS
................................................................
4
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE
.............................
6
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE
(common characteristics)
..........................................................................
7
OPERATION
..................................................................................................
7
TEST CIRCUITS
............................................................................................
8
TYPICAL CHARACTERISTICS
.......................................................................
9
1) Output Voltage vs. Output Current
......................................................................
9
2) Output Voltage vs. Input Voltage
.......................................................................
10
3) Dropout Voltage vs. Output Current
...................................................................
11
4) Output Voltage vs. Temperature
.......................................................................
11
5) Supply Current vs. Input Voltage
......................................................................
12
6) Supply Current vs. Temperature
.......................................................................
13
7) Dropout Voltage vs. Set Output Voltage
..............................................................
13
8) Line Transient Response
...............................................................................
14
9) Load Transient Response
..............................................................................
15
10) Ripple Rejection
.........................................................................................
16
TYPICAL APPLICATION
..............................................................................
17
PACKAGE DIMENSION
................................................................................
17
TAPING SPECIFICATION
.............................................................................
18
1
SMALL PACKAGE VOLTAGE REGULATOR
RQ5RW SERIES
OUTLINE
The RQ5RW Series are voltage regulator ICs with high accuracy output voltage and ultra-low supply current developed by
CMOS process. Each of these ICs consists of a voltage reference unit, an error amplifier, resistors for setting output volt-
age and a current limit circuit.
The output voltage of these ICs is fixed with high accuracy.
Even if V
OUT
is shorted to GND, the included current limit circuit protects the ICs from the destruction.
Furthermore, these ICs have a chip enable function, so that the supply current on standby can be minimized.
Since the package for these ICs are SC-82AB(Super Mini-mold)package, high density mounting of the ICs on boards is pos-
sible.
FEATURES
Ultra-Low Supply Current....................................TYP. 1.5A
Standby Current ...................................................TYP. 0.1A
Dropout Voltage....................................................TYP. 40mV (I
OUT
=1mA, RQ5RW30A/B)
Low Temperature-Drift Coefficient of
Output Voltage......................................................TYP. 100ppm/C
Excellent Line Regulation....................................TYP. 0.05%/V
High Accuracy Output Voltage...........................2.0%
Ultra-Small Package ............................................SC-82AB (Super Mini-mold)
Built-in Current Llimit Circuits
APPLICATIONS
Power source for battery-powered equipment.
Power source for cameras, VCRs, camcorders, hand-held audio instruments and hand-held communication equipment.
Precision voltage references.
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