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R1112N201A-TR-F View Datasheet(PDF) - RICOH Co.,Ltd.

Part Name
Description
View to exact match
R1112N201A-TR-F
Ricoh
RICOH Co.,Ltd. Ricoh
R1112N201A-TR-F Datasheet PDF : 2 Pages
1 2
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 (ISS) ························ Typ. 100μA (VIN=SET VOUT+1V)
Standby Current (Istandby) ················· Typ. 0.1μA (Same as above, in standby)
Dropout Voltage (VDIF) ···················· Typ. 0.19V (IOUT=100mA, VOUT=2.8V)
Ripple Rejection (RR)·····················Typ. 80dB (f=1kHz)
Input Voltage Range (VIN) ···············2.0V to 6.0V
Output Voltage Range (VOUT)··········1.5V to 5.0V (internally fixed)
Output Voltage Accuracy ················± 2%
BLOCK DIAGRAMS
R1112Nxx1A
R1122Nxx1A
( CE pin "L" active)
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
R1112Nxx1B
R1122Nxx1B
(CE pin "H" active)
VDD
VOUT
VDD
VOUT
Vref
Current Limit
CE
GND
CE
Vref
Current Limit
GND
SELECTION GUIDE
Package
SOT-23-5
Quantity per Reel
Part No.
3,000 pcs
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
R1112N
1 VDD
2 GND
3 CE or CE
4 NC
5 VOUT
1
2
3
R1122N
1 VOUT
2 GND
3 VDD
4 CE or CE
5 NC
TYPICAL CHARACTERISTIC
R1112N301B
R1122N301B Dropout Voltage vs. Output Current
0.40
0.35
85°C
25°C
0.30
-40°C
0.25
0.20
0.15
0.10
0.05
0
0
50
100
150
Output Current IOUT(mA)
APPLICATIONS
Power source for hand-held communication equipment, cameras, and VCRs
Power source for home appliances
Power source for battery-powered equipment
No.EK-060-091101
CMOS LDO Regulator
 

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