RP111x SERIES
Good Transient Response Low Voltage 500mA LDO
NO.EA-241-131010
OUTLINE
The RP111x Series are CMOS-based LDO regulators featuring 500mA output current. The input voltage is as
low as 1.4V and the output voltage can be set from 0.7V. Due to a built-in 0.46Ω (at V
OUT
=2.8V) on-resistor,
RP111x can provide a low dropout voltage. RP111x also features an excellent line transient response, ripple
rejection at 75dB, and low noise. The output voltage accuracy is as high as ±0.8% and the temperature drift
coefficient of output voltage is low at ±30ppm/℃. The accuracy of the output voltage of RP111x includes the
temperature characteristics and the load transient response has been improved. The typ. and max value of
under/overshoot for various output current are shown in the typical characteristics in the datasheet, therefore the
accuracy of the output voltage estimation will be easy on the actual operating cases.
In addition to a fold-back protection circuit built into conventional regulators, RP111x contains a thermal
shutdown circuit and an inrush current limit circuit. SOT-23-5 and SOT-89-5 packages, a 1.2mm square
DFN1212-6 package are available.
FEATURES
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Supply Current ...................................................... Typ. 80μA
Standby Current .................................................... Typ. 0.1μA
Dropout Voltage .................................................... Typ. 0.23V (I
OUT
=500mA,
V
OUT
=2.5V)
Ripple Rejection .................................................... Typ. 75dB (f=1kHz)
Typ. 70dB (f=10kHz)
Output Voltage Accuracy.......................................
±0.8%
(V
OUT
≥1.8V)
Output Voltage Temperature Coefficient ............... Typ.
±30ppm/°C
(V
OUT
≥1.8V)
Line Regulation ..................................................... Typ. 0.02%/V
Packages .............................................................. DFN1212-6, SOT-23-5, SOT-89-5,
Input Voltage Range ............................................. 1.4V to 5.25V
Output Voltage Range ........................................... 0.7V to 3.6V (0.1V steps)
(
For other voltages, please refer to MARK INFORMATIONS.)
Built-in Foldback Protection Circuit ....................... Typ. 50mA (Current at short mode)
Thermal Shutdown Temperature........................... 165°C
Inrush Current Limit .............................................. Typ.400mA (for 180μs after start-up)
Ceramic capacitors are recommended to be used with this IC ..... 1.0μF or more
APPLICATIONS
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Power source for portable communication equipment.
Power source for electrical appliances such as cameras, VCRs and camcorders.
Power source for battery-powered equipments.
Power source for electrical home appliances.
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RP111x
NO.EA-241-131010
BLOCK DIAGRAMS
RP111xxx1B
V
DD
V
OUT
V
FB
V
DD
RP111xxx1D
V
OUT
V
FB
Vref
Current Limit
Thermal Shutdown
Vref
Current Limit
Thermal Shutdown
CE
GND
CE
GND
SELECTION GUIDE
The output voltage, auto discharge function, package for the ICs can be selected at the user’s request.
Product Name
RP111Lxx1∗-TR
RP111Nxx1∗-TR-FE
RP111Hxx1∗-T1-FE
Package
DFN1212-6
SOT-23-5
SOT-89-5
Quantity per Reel
5,000 pcs
3,000 pcs
1,000 pcs
Pb Free
Yes
Yes
Yes
Halogen Free
Yes
Yes
Yes
xx x: The output voltage can be designated in the range of 0.7V（07）to 3.6V（36）in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
∗
: Auto discharge function at off state are options as follows.
(B) without auto discharge function at off state
(D) with auto discharge function at off state
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RP111x
NO.EA-241-131010
PIN CONFIGURATIONS
DFN1212-6
Top View
6
5
4
SOT-23-5
5
4
5
6
SOT-89-5
5
4
Bottom View
4
∗
(mark side)
1
2
3
3
2
1
1
2
3
1
2
3
PIN DESCRIPTIONS
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DFN1212-6
Pin No.
1
2
3
4
5
6
Symbol
V
OUT
V
FB
GND
CE
NC
V
DD
Output Pin
Feed Back Pin
Ground Pin
Chip Enable Pin ("H" Active)
No connection
Input Pin
Description
∗)
Tab is GND level. (They are connected to the reverse side of this IC.)
The tab is better to be connected to the GND, but leaving it open is also acceptable.
•
SOT-23-5
Pin No
1
2
3
4
5
Symbol
V
DD
GND
CE
V
FB
V
OUT
Input Pin
Ground Pin
Chip Enable Pin ("H" Active)
Feed Back Pin
Output Pin
Pin Description
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SOT-89-5
Pin No
1
2
3
4
5
Symbol
V
FB
GND
CE
V
DD
V
OUT
Feed Back Pin
Ground Pin
Chip Enable Pin ("H" Active)
Input Pin
Output Pin
Pin Description
Under normal conditions, please connect the V
OUT
pin to the V
FB
pin. However, in the case of using the
Adjustable Output Voltage Type, please follow the " Notes on the Adjustable Output Voltage Type Settings".
3
RP111x
NO.EA-241-131010
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
P
D
T
opt
T
stg
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation (DFN1212-6)
∗
Power Dissipation (SOT-23-5)
∗
Power Dissipation (SOT-89-5)
∗
Operating Temperature Range
Storage Temperature Range
Item
Rating
6.0
-0.3½6.0
−0.3
to V
IN
+0.3
510
600
420
900
−40
to 85
−55
to 125
°C
°C
mW
Unit
V
V
V
mA
∗)
For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field. The functional operation at or over these absolute maximum ratings is not assured.
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PCB Design
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