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.
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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.
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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
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damage arising from misuse or inappropriate use of the products.
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concerning the products or the technical information.
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