RP154x Series
Small Dual 300mA LDO
The RP154x Series are CMOS-based dual output LDO regulators featuring 300mA output. Various basic performances of the RP
Series have been improved by adopting a new manufacturing process. RP154x features a supply current from 50μA per output, a
minimum input voltage from 1.4V and the output voltage can be set from 0.8V to 3.6V (in 0.1V steps). RP154x is available in SOT-23-6
and DFN1216-8 packages. Due to the low minimum input voltage RP154L is able to extend battery life, additionally the LDO has less
power dissipation by the low dropout voltage between input and output.
FEATURES
•
Supply Current (I
SS
) ······················ Typ. 50μA
×
2 (V
IN
=SET V
OUT
+1V)
•
Standby Current (I
standby
) ················· Typ. 0.1μA
×
2 (Same as above, CE1/CE2="L")
•
Dropout Voltage (V
DIF
) ···················· Typ. 0.25V (I
OUT
=300mA, V
OUT
=2.8V)
•
Ripple Rejection (RR)····················· Typ. 70dB (f=1kHz)
•
Input Voltage Range (V
IN
) ··············· 1.4V to 5.25V
•
Output Voltage Range (V
OUT
)·········· 0.8V to 3.6V
∗
(internally fixed)
•
Output Voltage Accuracy ················± 1%
•
Temp. coeff. of Output Voltage ·······Typ.
±
80ppm/°C
•
Line Regulation·······························Typ. 0.02%/V
•
Fold-back Protection Circuit ···········Current limit Typ. 60mA
•
Auto-Discharge function ·················B Version
•
Packages ········································DFN1216-8, SOT-23-6
•
Ceramic Capacitor can be used. ····1μF or more
∗
) For information about combination of output voltage, visit our website to check.
(The above shows specification at Topt=25
°
C. Design assurance value at -40
°
C
<
Topt
<
85
°
C is also available. For details, please refer to the datasheet.)
=
=
BLOCK DIAGRAMS
RP154NxxxB
(Single Input type)
CE1
V
OUT1
V
DD1
RP154LxxxB
(Dual Input type)
V
OUT1
Error Amp.
Vref
Current Limit
R1_1
Error Amp.
Vref
R1_1
R2_1
Current Limit
R2_1
V
DD
GND
R1_2
Error Amp.
Vref
Current Limit
CE1
V
DD2
R1_2
Error Amp.
Vref
Current Limit
GND
R2_2
R2_2
CE2
V
OUT2
CE2
V
OUT2
∗
) xxxA Version does not exist above blue line.
SELECTION GUIDES
Package
DFN1216-8
SOT-23-6
Quantity per Reel
5,000 pcs
3,000 pcs
Part No.
RP154L.xxx∗ -E2
RP154N.xxx∗ -TR-FE
.xxx.
: Specify a combination of output voltage for each output using serial
numbers.
.∗
: Select from (.A.) without auto-discharge function or
(.B.) with auto-discharge function.
PACKAGES
DFN1216-8
Top View
8
7
6
5
5
TYPICAL CHARACTERISTIC
SOT-23-6
6
8
Bottom View
6
7
5
4
RP154x (VR1/VR2)
Dropout Voltage vs. Output Current
300
V
OUT
=2.5V
85°C
25°C
- 40°C
Dropout Voltage V
DIF
(mV)
∗
250
200
150
100
50
0
0
1
2
3
4
4
3
2
1
1
2
3
1
2
3
4
GND
∗
1
V
OUT1
V
OUT2
GND
∗
1
5
6
7
8
CE2
V
DD2
V
DD1
CE1
1
2
3
4
5
6
CE1
V
DD
CE2
V
OUT2
GND
V
OUT1
50
100 150 200 250
Output Current I
OUT
(mA)
300
∗
) The tab is substrate level (GND).
∗
1) The GND pin must be wired together when it is mounted on board.
APPLICATIONS
•
Power source for hand-held communication equipment, cameras, and VCRs
•
Power source for home appliances
No.EK-202-100223
•
Power source for battery-powered equipment
CMOS LDO 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.
2. The materials in this document 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 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.
Ricoh continually strives to promote customer satisfaction, and shares the achievements
of its management quality improvement program with people and society.
■Ricoh
awarded ISO 14001 certification.
The Ricoh Group was awarded ISO 14001 certification, which is an international standard for
environmental management systems, at both its domestic and overseas production facilities.
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http://www.ricoh.com/LSI/
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Electronic Devices Company
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