R1161N281B-TR-F
| Model | R1161N281B-TR-F |
| Description | Fixed Positive LDO Regulator, 2.8V, CMOS, PDSO5, HALOGEN FREE AND ROHS COMPLIANT, SOT-23, SC-74A, 5 PIN |
| PDF file | Total 2 pages (File size: 140K) |
| Chip Manufacturer | RICOH |
R1161x Series
Low Voltage 300mA LDO with ECO pin
The R1161x Series are CMOS-based LDO regulators with ECO pin featuring 300mA output. By inputting control signals from the ECO
pin, the mode of the regulator can be switched to low power mode or fast response mode, thus making both active and sleep modes
available for the system. The CE pin can switch the regulator into standby mode.
FEATURES
•
Supply Current (I
SS1
)
∗
·················Typ. 60μA (Fast mode, V
IN
=SET V
OUT
+1V)
•
Supply Current (I
SS2
)
∗
·················Typ. 4.5μA (Low power mode, same as above)
•
Standby Current (I
standby
) ············Typ. 0.1μA (Same as above, in standby)
•
Dropout Voltage (V
DIF
)
∗
··············Typ. 0.23V (Fast mode, I
OUT
=300mA)
•
•
•
Typ. 0.24V (Low power mode, I
OUT
=300mA)
Ripple Rejection (RR)················Typ. 65dB (Fast mode, f=1kHz)
Input Voltage Range (V
IN
) ··········1.4V to 6.0V
Output Voltage Range (V
OUT
)·····0.8V to 3.3V (internally fixed)
•
Output Voltage Accuracy ················± 2% (Fast mode)
•
•
•
•
•
•
±
3% (Low power mode)
Temp. coeff. of Output Voltage ·······Typ.
±
100ppm/°C
Line Regulation·······························Typ. 0.01%/V (Fast mode)
Fold-back Protection Circuit············Current limit Typ. 50mA
Auto-Discharge function ·················D Version
Packages ········································SON-6, SOT-23-5, HSON-6
Ceramic capacitors can be used. ···1μF or more (V
OUT
>
1.0V)
=
∗)
at V
OUT
=2.8V
BLOCK DIAGRAMS
R1161xxxxA
(
CE
pin "L" active)
ECO
V
DD
V
OUT
V
DD
R1161xxxxB
(CE pin "H" active)
ECO
V
OUT
V
DD
R1161xxxxD
(With Auto-Discharge function)
ECO
V
OUT
Vref
Current
Limit
Vref
Current
Limit
Vref
Current
Limit
CE
GND
CE
GND
CE
GND
SELECTION GUIDES
Package
SON-6
SOT-23-5
HSON-6
Quantity per Reel
Part No.
3,000 pcs
R1161D.xx.1.
∗
-TR-F
3,000 pcs
R1161N.xx.1.
∗
-TR-F
3,000 pcs
R1161D.xx.2.
∗
-TR-F
.xx.
: Specify the output voltage within the range 0.8V (.08.) to 3.3V (.33.)
in 0.1V steps.
.∗
: Select the polarity of the CE pin from (.A.) "L" active, (.B.) "H" active
or (.D.) "H" active with auto-discharge function.
PACKAGES (Top View)
SON-6
6
5
4
TYPICAL CHARACTERISTIC
HSON-6
6
5
4
SOT-23-5
5
4
R1161x26xx
Dropout Voltage vs. Output Current
(Fast Response Mode)
ECO=H
85°C
25°C
-40°C
∗
∗
0.40
Dropout Voltage V
DIF
(V)
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
0
50
1
2
3
1
2
3
1
2
3
1
2
3
4
5
6
V
DD
NC
V
OUT
ECO
GND
CE
or CE
1
2
3
4
5
V
DD
GND
CE
or CE
ECO
V
OUT
1
2
3
4
5
6
V
DD
NC
V
OUT
ECO
GND
CE
or CE
100
150 200 250
Output Current I
OUT
(mA)
300
∗)
The tab and tab suspension leads on back side are substrate level (GND).
APPLICATIONS
•
Power source for hand-held communication equipment, cameras, and VCRs
•
Very stable voltage reference
•
Power source for battery-powered equipment
No.EK-111-091101
CMOS LDO Regulator
