R1515x Series
50mA 36V Input Low Supply Current VR
The R1515x Series are CMOS-based voltage regulators featuring 50mA output current and 36V input voltage. In addition to a
fold-back protection circuit built into conventional regulators, R1515x 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 36V, the R1515x series are very
suitable for power source of car accessories
∗
.
∗)
These products are suitable for automotive applications too. Please refer to our "Car Electronics Products Catalog" or contact us.
FEATURES
•
Supply Current (I
SS
)·························Typ. 9μA (V
IN
=V
SET
+3.0V)
•
Standby Current (I
standby
) ···················Typ. 0.1μA (V
IN
=36.0V, CE="L")
•
Dropout Voltage (V
DIF
)·····················Typ. 0.2V (I
OUT
=20mA, V
SET
=5.0V)
•
Input Voltage Range (V
IN
) ··············4.0V to 36.0V (Absolute maximum rating: 50.0V)
•
Output Voltage Range (V
OUT
)··········2.0V to 12.0V (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. 50mA
•
Thermal Shutdown Circuit ··············Stops at 150°C
•
Packages ······································ SOT-89-5, HSOP-6J
•
Ceramic capacitors can be used. ···0.1μF to 10μF
BLOCK DIAGRAM
R1515xxxxB
Thermal Shutdown
Circuit
V
DD
Internal
VR
V
OUT
Vref
Short
Current Limit
Protection
CE
GND
SELECTION GUIDES
Halogen Free
Package
SOT-89-5
HSOP-6J
Q'ty per Reel
Part No.
1,000 pcs R1515H.xxx B-T1-FE
1,000 pcs R1515S.xxx B-E2-FE
.xxx
: Specify the output voltage within the range of
2.0V (.020.) to 12.0V (.120.) in 0.1V steps
PACKAGES (Top View)
SOT-89-5
5
4
TYPICAL CHARACTERISTIC
HSOP-6J
6
5
4
R1515x090B
10
Output Voltage V
OUT
(V)
Output Voltage vs. Output Current
8
6
4
2
0
1
2
3
1
2
3
1
2
3
4
5
V
OUT
GND
∗
CE
GND
∗
V
DD
1
2
3
4
5
6
V
OUT
GND
∗
CE
GND
∗
GND
∗
V
DD
V
IN
=10.5V
V
IN
=11.0V
V
IN
=11.5V
V
IN
=12.0V
0
∗
) The GND pin must be wired together when it is mounted on board.
50
100
150
Output Current I
OUT
(mA)
200
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, projectors, etc
•
Power source for the backup circuit for keyless entry systems, etc
No.EK-153-121001
CMOS Voltage Regulator
R1515x Series
50mA 36V Input Low Supply Current VR
CMOS Voltage Regulator
MAXIMUM INPUT VOLTAGE 36V
The CMOS type regulator has been introduced into the
high input voltage area where only bipolar type could
serve previously operate.
The R1515x Series have achieved the absolute maximum
rating as high as 50V (peak input voltage: 60V<200ms).
CMOS type high input voltage area
Absolute Maximum Rating 50V
(Peak Input Voltage 60V)
Maximum input voltage (V)
LOW SUPPLY CURRING DURING
OPERATIOPERATION: 9μA
Supply current is only one-tenth to one-fortieth of that of
the bipolar type.
This value represents the world’s lowest supply current of
regulators with an input voltage of 36V.
A battery friendly system can be built, because supply
current is low in both operating mode as well as in
standby mode.
RP171x R1191x
RP170x
RP173x
10
CMOS area
RP132x
R1171S
CMOS type large current range
MAXIMUM OPERATING AMBIENT
TEMPERATURE 105°C
Unlike Ricoh’s conventional regulators, the operating
ambient temperature range of the R1515x Series is rated
from -40°C to 105°C that make it suitable for use in
automotive and industrial applications involving higher
temperature.
Output current (mA)
Thermal Shutdown Circuit
The thermal shutdown circuit shown in the block diagram detects an increase in temperature, stops operation, and protects the regulator from being
damaged by a short circuit in the output pin (V
OUT
) and ground pin (GND).
For example, the Thermal Shutdown Circuit stops regulator operation if the junction temperature of the R1515x Series becomes higher than 150°C.
Additionally, if the junction temperature after the regulator being stopped decreases to a level below 125°C, it restarts regulator operation.
(The temperature is different according to the product.)
As a result the operation of the Thermal Shutdown Circuit causes the regulator repeatedly to turn OFF and ON till the causes of overheating are
removed. As a consequence a pulse shaped output voltage occurs. Please prevent this situation.
In the datasheet it is shown as a thermal shutdown detection temperature (T
TSD
) and a thermal shutdown release temperature (T
TSR
).
Products with the Thermal Shutdown Circuit
R1150H
R1501x
RP132x
R1154x
R1510S
RP170x
R1155x
∗
R1511x
RP171x
R1170x
R1514x
R1171x
R1515x
R1172x
R1516x
R1173x
RP108J
R1190x
RP111x
∗)
Under development
R1191x
RP115x
R1500x
RP131x
The currently available information as of October 2012 is provided in this New Product News.
EK-153-121001
PCB Design
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