R1112N261A-TR-F
| Model | R1112N261A-TR-F |
| Description | Fixed Positive LDO Regulator, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN |
| PDF file | Total 2 pages (File size: 183K) |
| Chip Manufacturer | RICOH |
R1112N/R1122N Series
Low Noise 150mA LDO
The R1112N/R1122N Series are CMOS-based LDO regulators featuring 150mA output. High ripple rejection and excellent load
transient response of the series make the product ideally suited for use in power source for hand-held communication equipment.
The polarity of the CE pin can be selected. Two different pin layout as R1112N and R1122N are available. Ceramic capacitors can be
used.
FEATURES
•
Supply Current (I
SS
) ························Typ. 100μA (V
IN
=SET V
OUT
+1V)
•
Standby Current (I
standby
) ·················Typ. 0.1μA (Same as above, in standby)
•
Dropout Voltage (V
DIF
) ····················Typ. 0.19V (I
OUT
=100mA, V
OUT
=2.8V)
•
Ripple Rejection (RR)·····················Typ. 80dB (f=1kHz)
•
Input Voltage Range (V
IN
) ···············2.0V to 6.0V
•
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. 30mA
•
Package··············································· SOT-23-5
•
Replaceable with LP2980 or LP2985. (R1112N)
•
Replaceable with TK111, TK112 or TK113. (R1122N)
•
Ceramic capacitors can be used. ········ 2.2μF or more
BLOCK DIAGRAMS
R1112Nxx1A
R1122Nxx1A
(
CE
pin "L" active)
R1112Nxx1B
R1122Nxx1B
(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.
R1112N.xx.1.
∗
-TR-F
R1122N.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
R1112N301B
R1122N301B
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
Dropout Voltage vs. Output Current
85°C
25°C
-40°C
1
2
3
R1112N
1
2
3
4
5
V
DD
GND
CE
or CE
NC
V
OUT
R1122N
1
2
3
4
5
V
OUT
GND
V
DD
CE or CE
NC
Dropout Voltage V
DIF
(V)
0
50
100
Output Current I
OUT
(mA)
150
APPLICATIONS
•
Power source for hand-held communication equipment, cameras, and VCRs
•
Power source for home appliances
No.EK-060-091101
•
Power source for battery-powered equipment
CMOS LDO Regulator
