RP200x Series
Automatic Mode Shift 300mA LDO
The RP200x Series are CMOS-based automatic mode shift LDO regulators featuring 300mA output.
In auto switching mode, the operation can switch automatically to fast response mode or low power mode of the ECO function
according to output current. (Automatic switching to fast response mode under I
OUT
>8mA conditions or to low power mode under
I
OUT
<1mA conditions.)
In lower power mode, supply current is as low as 1μA. In fast response mode, ripple rejection is 70dB and noise is low. By inputting
control signal into the AE pin, the mode of the regulator can be fixed with fast response mode.
In addition to SOT-23-5 and SC-88A packages, a 0.69mm square WLCSP-4-P5 package and a 1.2mm square DFN(PLP)1212-6 are also
available.
FEATURES
•
Supply Current (I
SS2
) ······················· Typ. 55μA (Fast mode, V
IN
=SET V
OUT
+1V)
•
Temp. coeff. of Output Voltage ······· Typ.
±
50ppm/°C
•
Supply Current (I
SS1
) ······················· Typ. 1.5μA (Low power mode, same as above)
•
Line Regulation ······························ Typ. 0.02%/V (Fast mode)
•
Standby Current (I
standby
) ················· Typ. 0.1μA (Same as above, CE="L")
•
Fold-back Protection Circuit ··········· Current limit Typ. 50mA
•
Dropout Voltage (V
DIF
) ···················· Typ. 0.23V (I
OUT
=300mA, V
OUT
=2.8V)
•
Auto-Discharge function················· D Version
•
Ripple Rejection (RR)····················· Typ. 70dB (Fast mode, f=1kHz)
•
Packages ······································· WLCSP-4-P5, DFN(PLP)1212-6,
•
Input Voltage Range (V
IN
) ··············· 1.4V to 5.25V
SC-88A, SOT-23-5
•
Output Voltage Range (V
OUT
)·········· 0.8V to 4.0V (internally fixed)
•
Ceramic capacitor can be used.····· 1μF or more
•
Output Voltage Accuracy ················± 1%
(The above shows specification at Topt=25
°
C. Design assurance value at -40
°
C
<
Topt
<
85
°
C is also available.)
=
=
BLOCK DIAGRAMS
RP200xxxxB
(Without Auto-Discharge function)
AE
RP200xxxxD
(With Auto-Discharge function)
AE
V
DD
V
OUT
V
DD
V
OUT
Vref
Current Limit
Vref
Current Limit
CE
GND
CE
GND
WLCSP-4-P5 type does not have
.
WLCSP-4-P5 type does not have
.
SELECTION GUIDES
Package
WLCSP-4-P5
DFN(PLP)1212-6
SC-88A
SOT-23-5
Quantity per Reel
5,000 pcs
5,000 pcs
3,000 pcs
3,000 pcs
Part No.
RP200Z.xx.1.
∗
-TR-F
RP200K.xx.1.
∗
-TR
RP200Q.xx.2.
∗
-TR-F
RP200N.xx.1.
∗
-TR-F
.xx.
: Specify the output voltage within the range 0.8V (.08.) to 4.0V (.40.)
in 0.1V steps
.∗
: Select from (.B.) without auto-discharge function or
(.D.) with auto-discharge function
PACKAGES (Top View)
WLCSP-4-P5 DFN(PLP)1212-6
4
3
6
5
4
TYPICAL CHARACTERISTIC
SOT-23-5
5
4
SC-88A
5
4
RP200x26xx
350
300
250
200
150
100
50
0
0
Dropout Voltage vs. Output Current
85°C
25°C
- 40°C
1
2
1
2
3
1
1
2
3
2
3
1
2
3
4
V
DD
CE
GND
V
OUT
1
2
3
4
5
6
AE
GND
CE
V
DD
NC
V
OUT
1
2
3
4
5
AE
GND
V
OUT
V
DD
CE
1
2
3
4
5
V
DD
GND
CE
AE
V
OUT
Dropout Voltage V
DIF
(mV)
100
200
Output Current I
OUT
(mA)
300
∗)
WLCSP-4-P5 does not have AE pin.
APPLICATIONS
•
Power source for hand-held communication equipment, camera and VCRs
•
Power source for home appliances and digital home appliances
No.EK-182-100119
•
Power source for battery-powered equipment
300mA CMOS LDO Regulator
RP200x Series
Automatic Mode Shift 300mA LDO
300mA CMOS LDO Regulator
WHAT IS ECO Function
An increasing number of devices such as mobile phones do not have only talk mode (active mode) and off mode status, but also standby mode
(sleep mode) etc.
However during the active mode and sleep mode the regulator must satisfy very different requirement. The regulators are required to have fast
response and high ripple rejection in the active mode, but consume low supply current in the sleep mode. To satisfy these conflicting requirements,
Ricoh’s regulators include an ECO function that allows switching between fast mode and low power mode.
There are some types of switching between fast mode and low power mode. As RP200x Series are automatic mode shift types, they can switch the
modes automatically depending on system load.
By inputting control signal into the AE pin, the mode of the regulator can be fixed with fast response mode.
Automatic Mode Shift
The regulator automatically switches mode depending on system load.
1μA supply current in low power mode
(Reference value)
80
RP101x
70
60
50
40
30
RP200x
(Low Power Mode)
Ripple Rejection RR(dB)
RP102x
RP200x
(Fast Response Mode)
Supply Current I
SS(μA)
(Schematic view)
55
Fast Response Mode
R1161x
(Fast Response Mode)
R1131x
R1161x
(Low Power Mode)
1
0
Low Power Mode
1
8
Output Current I
OUT
(mA)
∗
To select “H” in AE pin is fixed in fast mode.
∗
To select “L” in AE pin is maintained in Automatic Mode Shift.
20
0
10
20
30
40
50
60
Supply Current I
SS
(μA)
300mA LDO Regulator Comparison
RP200x
Input voltage Range
1.4V to 5.25V
Output voltage Range
0.8V to 4.0V
Output Voltage Accuracy
±1%
Output Current
300mA
55μA (Fast mode)
Supply Current
1.5μA
(Low power mode)
Standby Current
0.1μA
70dB (Fast mode)
Ripple Rejection
Output Capacitor
1μF
Dropout Voltage (Typ.) 0.23V (300mA/2.8V)
Line Regulation
0.02%/V
Load regulation
35mV (300mA)
WLCSP-4-P5
DFN(PLP)1212-6
Package
SC-88A
SOT-23-5
etc.
Automatic Mode Shift
R1161x
1.4V to 6.0V
0.8V to 3.3V
±2%
300mA
60μA (Fast mode)
4.5μA (Low power mode)
0.1μA
65dB (Fast mode)
1μF
0.23V (300mA/2.8V)
0.01%/V
40mV (300mA)
SOT-23-5
SON-6
HSON-6
Manual Mode Shift
RP101x
1.7V to 5.25V
1.2V to 3.3V
±0.6%
300mA
18μA
0.1μA
75dB
1μF
0.13V (150mA/2.8V)
0.02%/V
20mV (150mA)
DFN(PLP)1612-4
DFN(PLP)1612-4B
SOT-23-5
No ECO Mode
RP102x
1.7V to 5.25V
1.2V to 3.3V
±0.8%
300mA
50μA
0.1μA
80dB
1μF
0.12V (300mA/2.8V)
0.02%/V
20mV (300mA)
WLCSP-4-P2
DFN(PLP)1820-6
SOT-23-5
No ECO Mode
The currently available information as of January 2010 is provided in this New Product News.
EK-182-100119
PCB设计
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