RP202x SERIES
Low Power / Fast Mode Alternative 200mA LDO Regulator
NO.EA-279-170710
OUTLINE
The RP202x is voltage regulator IC with high output voltage accuracy, low dropout voltage and low supply
current. This IC performs with the chip enable function and realize a standby mode with low supply current. To
prevent the destruction by over current, the current limit circuit is included. The RP202x has 3-mode. One is
standby mode with CE pin. The other two are the fast response mode (Fast Mode) and the low power mode,
and switch over automatically according to the load current of the LDO. Supply current of IC itself at light load
is automatically reduced. The output voltage is maintained between Fast Mode and ECO Mode.
The RP202x consists of a voltage reference unit, an error amplifier, a resister net for voltage setting, and a
current limit circuit.
Since the packages are SOT-23-5, SC-88A, and DFN(PLP)1010-4, high density mounting of the IC on boards
is possible.
FEATURES
Input Voltage Range ······································· 1.4V to 5.25V
Output Voltage Range ····································· 0.8V to 4.0V (0.1V steps)
Supply Current (I
OUT
=0mA) ······························· Typ. 2.5µA
Supply Current (I
OUT
=10mA) ······························ Typ. 50µA
Supply Current (Standby Mode) ························· Typ. 0.1µA
Dropout Voltage ············································· Typ. 0.20V (I
OUT
=200mA,
V
OUT
=2.8V)
Ripple Rejection ············································· Typ. 70dB (f=1kHz, V
OUT
=2.8V,
I
OUT
=30mA)
Line Regulation ·············································· Typ. 0.02%/V (I
OUT
=10mA)
Packages ····················································· DFN(PLP)1010-4, SC-88A, SOT-23-5
Built-in Foldback Protection Circuit ····················· Typ. 60mA (Current at short mode)
Built-in Constant Slope Circuit (Soft-start Function)
Ceramic capacitors are recommended to be used with this IC 0.47µF 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.
1
RP202x
NO.EA-279-170710
SELECTION GUIDE
The output voltage, auto discharge function
(1)
, and package, for the IC can be selected at the user’s request.
Product Name
RP202Kxx1∗-TR
RP202Qxx2∗-TR-FE
RP202Nxx1∗-TR-FE
Package
DFN(PLP)1010-4
SC-88A
SOT-23-5
Quantity per Reel
10,000pcs
3,000pcs
3,000pcs
Pb Free
Yes
Yes
Yes
Halogen Free
Yes
Yes
Yes
xx : The output voltage can be designated in the range from 0.8V(08) to 4.0V(40) in 0.1V steps.
∗
: The 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
BLOCK DIAGRAMS
RP202xxxxB
RP202xxxxD
V
DD
V
OUT
V
DD
V
OUT
Vref
Current Limit
Vref
Current Limit
CE
GND
CE
GND
(1)
Auto-discharge function quickly lowers the output voltage to 0V, when the chip enable signal is switched from the
active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.
2
RP202x
NO.EA-279-170710
PIN DESCRIPTIONS
DFN(PLP)1010-4
Top View
Bottom View
4
3
3
∗
4
SC-88A
SOT-23-5
5
4
5
4
(mark side)
(mark side)
1
2
2
1
1
2
3
1
2
3
DFN(PLP)1010-4
Pin No
1
2
3
4
leaving it open is also acceptable.
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
SC-88A
Pin No
1
2
(1)
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)
SOT-23-5
Pin No
1
2
3
4
5
(1)
Symbol
V
DD
GND
CE
NC
V
OUT
Input Pin
Ground Pin
Pin Description
Chip Enable Pin ("H" Active)
No Connection
Output Pin
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.
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RP202x
NO.EA-279-170710
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
P
D
Tj
Tstg
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation (DFN(PLP)1010-4, Standard Test Land Pattern)
Power Dissipation (SC-88A, Standard Test Land Pattern)
1
Power Dissipation (SOT-23-5, Standard Test Land Pattern)
1
Junction Temperature Range
Storage Temperature Range
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.
1
Item
Rating
6.0
−0.3
to 6.0
−0.3
to V
IN
+ 0.3
220
400
380
420
−40
to 125
−55
to 125
Unit
V
V
V
mA
mW
°C
°C
RECOMMENDED OPERATING CONDITIONS
Symbol
V
IN
Ta
Input Voltage
Operating Temperature Range
RECOMMENDED OPERATING CONDITIONS
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the recommended
operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And
the semiconductor devices may receive serious damage when they continue to operate over the recommended
operating conditions.
Item
Rating
1.4 to 5.25
−40
to 85
Unit
V
°C
(1)
Refer to
POWER DISSIPATION
for detailed information.
4
RP202x
NO.EA-279-170710
ELECTRICAL CHARACTERISTICS
V
IN
=Set V
OUT
+1V,
I
OUT
=1mA, C
IN
=C
OUT
=0.47µF,
unless otherwise noted.
The specification in
is checked and guaranteed by design engineering at -40°C≤Ta≤85°C.
Symbol
Item
Conditions
I
OUT
=5mA (Fast Mode) V
OUT
> 2.0V
Ta=25°C
V
OUT
≤ 2.0V
I
OUT
=5mA (Fast Mode) V
OUT
> 2.0V
-40°C
≤
Ta
≤
85°C
V
OUT
≤ 2.0V
V
OUT
> 2.0V
V
OUT
≤ 2.0V
Min.
×
0.99
-20mV
×0.965
−70mV
200
1mA ≤ I
OUT
≤
10mA
10mA ≤ I
OUT
≤
200mA
Dropout Voltage
Supply Current
(I
OUT
=0mA)
(1)
Supply Current
(I
OUT
=10mA)
I
OUT
=0mA
I
OUT
=10mA
V
CE
=GND
−1.0
−20
−20
Refer to the "Dropout Voltage"
2.5
50
0.1
1.0
8.0
1.0
2.0
±0.50
±0.02
75
70
65
60
60
0.3
1.0
0.4
V
IN
= 4.0V
V
CE
= 0V
60
0.6
±0.10
%/V
5.0
µA
µA
µA
mA
mA
10
1.0
20
30
Typ.
(Ta＝25°C)
Max.
×1.01
20mV
×1.025
50mV
mA
%
mV
mV
V
Unit
V
OUT
Output Voltage
I
OUT
∆V
OUT
/∆I
OUT
V
DIF
I
SS1
I
SS2
Output Current
Load Regulation
Istandby Standby Current
I
OUTH
I
OUTL
∆V
OUT
/∆V
IN
RR
I
SC
I
CEPD
V
CEH
V
CEL
R
LOW
Fast Mode
I
OUT
= Light load to Heavy load
switch-over current
Low Power Mode
I
OUT
= Heavy load to Light load
switch-over current
I
OUT
=1mA
V
OUT
+0.5V ≤ V
IN
≤ 5V
(Low Power Mode)
Line Regulation
1.4V ≤ V
IN
I
OUT
=10mA
(Fast Mode)
V
OUT
≤
1.8V
f=1kHz
1.8< V
OUT
≤2.8V
Ripple 0.2Vp-p
Ripple Rejection
V
IN
=V
OUT
+1.0V，
2.8< V
OUT
≤3.3V
I
OUT
=30mA
3.3 < V
OUT
Short Current Limit
CE Pull-down
Constant Current
CE Input Voltage “H”
CE Input Voltage “L”
Low Output Nch Tr.
ON Resistance
(of D version)
V
OUT
=0V
dB
mA
µA
V
V
Ω
All of units are tested and specified under load conditions such that Tj≈Ta½25°C except for Ripple Rejection, Output Voltage
Temperature Coefficient.
(1)
The value of supply current is excluding the Pull-down constant current of CE Pin.
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