R1111N/R1121N Series
150mA LDO
The R1111N/R1121N Series are CMOS-based LDO regulators featuring 150mA output. (Under 1.5V
<
V
OUT
<
1.7V conditions, 100mA)
=
=
R1111N/R1121N has a high maximum input voltage rating of 8V, which makes the product ideally suitable for use in power source for
various equipment, including hand-held communication equipment. The polarity of the CE pin can be selected. Two different pin
layout as R1111N and R1121N are available.
FEATURES
•
Supply Current (I
SS
) ························Typ. 35μA (V
IN
=SET V
OUT
+1V)
•
Standby Current (I
standby
) ·················Typ. 0.1μA (Same as above, in standby)
•
Dropout Voltage (V
DIF
) ····················Typ. 0.2V (I
OUT
=100mA, V
OUT
=2.8V)
•
Ripple Rejection (RR)·····················Typ. 70dB (f=1kHz)
•
Input Voltage Range (V
IN
) ···············2.0V to 8.0V
•
Output Voltage Range (V
OUT
)··········1.5V to 5.0V (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
•
Package··········································SOT-23-5
•
Replaceable with LP2980, LP2985. (R1111N)
•
Replaceable with TK111, TK112, or TK113. (R1121N)
BLOCK DIAGRAMS
R1111Nxx1A
R1121Nxx1A
(
CE
pin "L" active)
R1111Nxx1B
R1121Nxx1B
(CE pin "H" active)
V
DD
V
OUT
V
DD
V
OUT
Vref
Current Limit
CE
GND
Vref
Current Limit
CE
GND
SELECTION GUIDE
Package
SOT-23-5
Quantity per Reel
3,000 pcs
Part No.
R1111N.xx.1.
∗
-TR-F
R1121N.xx.1.
∗
-TR-F
.xx.
: Specify the output voltage within the range 1.5V (.15.) to 5.0V (.50.)
in 0.1V steps.
.∗
: Select the polarity of the CE pin from (.A.) "L" active or (.B.) "H" active.
PACKAGE (Top View)
SOT-23-5
5
4
TYPICAL CHARACTERISTIC
R1111N301B
R1121N301B
0.40
0.35
Dropout Voltage V
DIF
(V)
Dropout Voltage vs. Output Current
85°C
25°C
-40°C
0.30
0.25
0.20
0.15
0.10
0.05
0
0
1
2
3
R1111N
1
2
3
4
5
V
DD
GND
CE
or CE
NC
V
OUT
R1121N
1
2
3
4
5
V
OUT
GND
V
DD
CE or CE
NC
50
100
Output Current I
OUT
(mA)
150
APPLICATIONS
•
Power source for hand-held communication equipment, cameras, and VCRs
•
Power source for home appliances
•
Power source for battery-powered equipment
No.EK-073-091101
CMOS LDO Regulator
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
