RP109x SERIES
LOW NOISE 150mA LDO REGULATOR
NO.EA-204-170425
OUTLINE
The RP109x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low
supply current, low ON-resistance, and high ripple rejection. Each of these ICs consists of a voltage reference
unit, an error amplifier, a resistor-net for voltage setting, a current limit circuit and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function which prolong the battery life.
The line transient response and load transient response of the RP109x Series are excellent, thus these ICs are
very suitable for the power supply for hand-held communication equipment. RP109x Series contributes to the
downsizing of the hand-held equipment because it can use the 0.1F ceramic capacitor.
In addition to SOT-23-5, SC-88A and DFN1010-4 packages, a 0.8mm square ultra compact DFN(PLP)0808-4
package is also available.
FEATURES
Supply Current ............................................................. Typ. 50A
Standby Mode .............................................................. Typ. 0.1A
Dropout Voltage............................................................ Typ. 0.25V (I
OUT
½150mA,
V
OUT
½2.5V)
Ripple Rejection ........................................................... Typ. 75dB (f½1kHz, V
OUT
½2.5V)
Temperature-Drift Coefficient of Output Voltage .......... Typ.
100ppm/C
(V
OUT
1.8V)
Typ.
30ppm/C
(V
OUT
≥1.8V)
Line Regulation ............................................................ Typ. 0.02%/V
Output Voltage Accuracy ..............................................
1.0%
Packages...................................................................... DFN(PLP)0808-4, DFN1010-4, SC-88A, SOT-23-5
Input Voltage Range ..................................................... 1.4V to 5.25V
Output Voltage Range .................................................. 0.8V to 3.6V (0.1V steps)
(
For other voltages, please refer to MARK INFORMATIONS.)
Built-in Fold Back Protection Circuit ............................. Typ. 40mA (Current at short mode)
Ceramic capacitors are recommended to be used with this IC .... 0.1F or more
APPLICATIONS
Power source for portable communication equipment.
Power source for electrical appliances such as cameras, VCRs and camcorders.
Power source for battery-powered equipment.
Power source for home appliances.
1
RP109x
NO.EA-204-170425
BLOCK DIAGRAMS
RP109xxxxB
V
DD
V
OUT
RP109xxxxD
V
DD
V
OUT
Vref
Current Limit
Vref
Current Limit
CE
GND
CE
GND
SELECTION GUIDE
The output voltage, auto discharge function, package, and the taping type, etc. for the ICs can be selected at
the user’s request.
Product Name
RP109Kxx1-TR
RP109Lxx1-TR
RP109Qxx2-TR-FE
RP109Nxx1-TR-FE
Package
DFN(PLP)0808-4
DFN1010-4
SC-88A
SOT-23-5
Quantity per Reel
10,000 pcs
10,000 pcs
3,000 pcs
3,000 pcs
Pb Free
Yes
Yes
Yes
Yes
Halogen Free
Yes
Yes
Yes
Yes
xx: Specify the set output voltage (V
SET
) within the range of 0.8V to 3.6 in 0.1V steps.
The second decimal point of V
SET
is described as below.
1.25V: RP109x12x5
1.85V: RP109x18x5
2.85V: RP109x28x5
:
Select the polarity of the CE pin from (B) "H" active without auto-discharge function or (D) "H" active with
auto-discharge function.
2
RP109x
NO.EA-204-170425
PIN CONFIGURATIONS
DFN(PLP)0808-4
Top View
4
3
DFN1010-4
Top View
4
3
SC-88A
5
4
4
SOT-23-5
5
4
Bottom View
3
4
Bottom View
3
(mark side)
(mark side)
1
2
2
1
1
2
2
1
1
2
3
1
2
3
PIN DESCRIPTIONS
DFN(PLP)0808-4 / DFN1010-4
Pin No
1
2
3
4
Symbol
V
OUT
GND
CE
V
DD
Output Pin
Ground Pin
Pin Description
Chip Enable Pin ("H" Active)
Input Pin
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.
SC-88A
Pin No
1
2
3
4
5
Symbol
CE
NC
GND
V
OUT
V
DD
No Connection
Ground Pin
Output Pin
Input Pin
Pin Description
Chip Enable Pin ("H" Active)
Pin No. 2 is connected to the bottom of the IC. It is recommended that the pin be connected to the ground plane on the
board, or otherwise be left floating so that there is no contact with other potentials.
SOT-23-5
Pin No
1
2
3
4
5
Symbol
V
DD
GND
CE
NC
V
OUT
Input Pin
Ground Pin
Chip Enable Pin ("H" Active)
No Connection
Output Pin
Pin Description
3
RP109x
NO.EA-204-170425
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation
(DFN(PLP)0808-4)
P
D
Power Dissipation
(DFN1010-4)
Power Dissipation
Item
Rating
6.0
0.3
to 6.0
0.3
to V
IN
0.3
180
286
400
380
420
40
to 85
55
to 125
Unit
V
V
V
mA
(SC-88A)
mW
Power Dissipation
(SOT-23-5)
T
a
T
stg
Operating Temperature Range
Storage Temperature Range
C
C
)
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.
4
RP109x
NO.EA-204-170425
ELECTRICAL CHARACTERISTICS
RP109xxxxB/D
are guaranteed by Design Engineering at -40ºC ≤ Ta ≤ 85 ºC.
(Ta=25C)
V
IN
=V
SET
+1.0V (V
OUT
>1.5), V
IN
=2.5V(V
OUT
≤1.5V), I
OUT
=1mA, C
IN
=C
OUT
=0.1μF, unless otherwise noted.
The specifications surrounded by
RP109x Series
Symbol
Item
Ta= 25C
V
OUT
Output Voltage
-40C ≤ Ta ≤ 85C
I
OUT
V
OUT
/I
OUT
V
DIF
I
SS
Istandby
V
OUT
/V
IN
RR
V
IN
V
OUT
/Ta
I
SC
I
PD
V
CEH
V
CEL
en
Output Current
Load Regulation
Dropout Voltage
Supply Current
Supply Current
(Standby Mode)
Line Regulation
I
OUT
= 0mA
V
CE
= 0V
V
SET
0.5V
≤ V
IN
≤ 5.25V
V
IN
≥ 1.4V
f = 1kHz
Ripple 0.2Vp-p
V
IN
= V
SET
+1.0V
I
OUT
= 30mA
1.4
-40C ≤ Ta ≤ 85C
V
OUT
½0V
1.0
0.4
BW = 10Hz to
100kHz
V
IN
= 4.0V
V
CE
= 0V
V
SET
≥ 1.8V
V
SET
< 1.8V
20
x V
SET
40
x V
SET
60
V
SET
≥ 1.8V
V
SET
< 1.8V
30
100
40
0.3
0.6
1mA ≤ I
OUT
≤ 150mA
Conditions
V
SET
≥ 1.8V
V
SET
< 1.8V
V
SET
≥ 1.8V
V
SET
< 1.8V
Min.
x 0.99
-18
x 0.985
-50
150
5
30
Typ.
Max.
x 1.01
+18
x 1.015
+50
Unit
V
mV
V
mV
mA
mV
Please see
Dropout Voltage
on the next page.
50
0.1
0.02
70
1.0
0.10
μA
μA
%/V
Ripple Rejection
Input Voltage
*1
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-down Current
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
Nch On Resistance
for Auto-discharge
(D Version Only)
75
5.25
dB
V
ppm
/C
mA
μA
V
V
μVrms
R
LOW
Ω
All test items listed under
Electrical Characteristics
are done under the pulse load condition (Tj≈Ta=25ºC) except
Output Noise, Ripple Rejection, and Output Voltage Temperature Coefficient.
*1
Maximum input voltage is 5.25V. If, for any reason the input voltage exceeds 5.25V, it has to be no more than
5.5V, and total operating time should be within 500 hours.
5
PCB Design
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