R1501x Series
1A 24V Input VR
The R1501x Series are CMOS-based voltage regulators featuring 1A output current and 24V input voltage. The R1501x series
provides high input voltage operation and low on-resistance (at V
OUT
= 10V, below 0.6Ω) because of using CMOS transistor. In addition
to a fold-back protection circuit built into conventional regulators, R1501x contains a thermal shutdown circuit. Besides the low
supply current by CMOS, the operating temperature is -40°C to 105°C and the maximum input voltage is 24V, the R1501x series are
very suitable for power source of car accessories.
FEATURES
•
Supply Current (I
SS
) ························Typ. 70μA (V
IN
=24V)
•
Standby Current (I
standby
) ·················Typ. 0.1μA (V
IN
=24V, CE="L")
•
Dropout Voltage (V
DIF
) ····················Typ. 0.575V (I
OUT
=1A, V
OUT
=5V)
•
Input Voltage Range (V
IN
) ···············3V to 24V (Absolute maximum rating: 36V)
•
Ripple Rejection(RR) ····················Typ. 60dB (f=1kHz, V
OUT
<
6V)
=
•
•
Typ. 50dB (f=1kHz, V
OUT
>6V)
Output Voltage Range (V
OUT
)··········3.0V to 18.0V (internally fixed)
Output Voltage Accuracy ················± 2%
•
Temp. coeff of Output Voltage ··················· Typ.
±
100ppm/°C
•
Line Regulation········································ Typ. 0.05%/V
•
Fold-back Protection Circuit····················· Current limit Typ. 65mA
•
Thermal Shutdown Circuit ······················· Stops at Typ. 160°C.
•
Packages ···················································· HSOP-6J, TO-252-5-P2
•
Ceramic capacitors can be used. ············ 10μF or more
(The above shows specification at Topt=25
°
C. Design assurance value at -40
°
C
<
Topt
<
105
°
C is also available. For details, please refer to the datasheet.)
=
=
BLOCK DIAGRAM
R1501xxxxB
Thermal Shutdown
Circuit
V
DD
V
OUT
Vref
Short
Current Limit
Protection
CE
GND
SELECTION GUIDES
Package
HSOP-6J
TO-252-5-P2
Quantity per Reel
Part No.
1,000 pcs
R1501S.xxx B-E2-F
3,000 pcs
R1501J.xxx B-T1-F
.xxx
: Specify the output voltage within the range 3.0V (.030.) to 12.0V (.120.)
in 0.1V steps and 12.5V (.125.) to 18.0V (.180.) in 0.5V steps.
PACKAGES (Top View)
HSOP-6J
6
5
4
TYPICAL CHARACTERISTIC
TO-252-5-P2
R1501x180B
20.0
Output Voltage vs. Output Current
Output Voltage V
OUT
(V)
16.0
12.0
8.0
4.0
0
1
2
3
V
IN
=18.5V
V
IN
=19.0V
V
IN
=20.0V
1
2
3
4
5
1
2
3
4
5
6
V
DD
GND
∗
GND
∗
CE
GND
∗
V
OUT
1
2
3
4
5
V
DD
GND
∗
GND
∗
CE
V
OUT
0
0.5
1.0
1.5
Output Current I
OUT
(A)
2.0
∗
) The GND pin must be wired together when it is mounted on board.
APPLICATIONS
•
Power source for home appliances such as refrigerators, rice cookers, electric water warmers, etc
•
Power source for car audio equipment, car navigation systems, ETC systems, etc
•
Power source for laptop personal computers, digital TVs, cordless phones, and private LAN systems for home, etc
•
Power source for office equipment machines such as copiers, printers, facsimiles, scanners, etc
No.EK-184-091101
CMOS Voltage Regulator
1. The products and the product specifications described in this document 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.
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without prior written consent of Ricoh.
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exporting or otherwise taking out of your country the products or the technical information
described herein.
4. The technical information described in this document 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, telecommunication 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 to 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, firecontainment
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 document.
8. Please contact Ricoh sales representatives should you have any questions or comments
concerning the products or the technical information.
RICOH COMPANY., LTD.
Electronic Devices Company
■Ricoh
presented with the Japan Management Quality Award for 1999.
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