Ricoh EK-182-40930 Thermostat User Manual


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RP200x Series
Manual/Automatic Mode Shift Low Voltage 300mA LDO
No.EK-182-40930 300mA CMOS LDO Regulator
The RP200x Series are CMOS-based manual/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 IOUT<1mA conditions.) In low
power mode, supply current is as low as 1.5μA. 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 package, a 0.69mm
square WLCSP-4-P5 package and a 1.2mm square DFN(PLP)1212-6 are also available.
FEATURES
• Supply Current (ISS2) ··················· Typ. 55μA (Fast mode, VIN=VSET+1.0V)
• Supply Current (ISS1) ··················· Typ. 1.5μA
(Low power mode, same as above)
• Standby Current (Istandby) ·············· Typ. 0.1μA (Same as above, CE="L")
• Dropout Voltage (VDIF) ················ Typ. 0.23V (IOUT=300mA, VSET=2.8V)
• Ripple Rejection (RR) ················· Typ. 70dB (f=1kHz, Fast mode)
• Input Voltage Range (VIN) ············ 1.4V to 5.25V
(Absolute maximum rating : 6.0V)
• Output Voltage Range (VOUT) ······· 0.8V to 4.0V (Internally fixed)
• Output Voltage Accuracy ············· ± 1%
•
Temp. coeff. of Output Voltage ······ Typ. ± 50ppm/°C
• Line Regulation ························· Typ. 0.02%/V (Fast mode)
• Fold-back Protection Circuit ········· Current limit Typ. 50mA
• Auto-discharge Function ·············· D Version
• Packages ·································
WLCSP-4-P5, DFN(PLP)1212-6,
SOT-23-5
• Ceramic capacitor can be used. ···· 1μF or more
(The above shows specification at Topt=25
°
C. Design assurance value at -40
°
C ≤ Topt ≤ 85
°
C is also available. For details, please refer to the datasheet.)
BLOCK DIAGRAMS
RP200xxx1B RP200xxx1D
(Without Auto-discharge function) (With Auto-discharge function)
V
DD
GND
V
OUT
CE
Vref
Current Limit
V
DD
GND
V
OUT
CE
Vref
Current Limit
SELECTION GUIDES
Halogen Free
Package
Q'ty per Reel
Part No.
.
xx
.
: Specify the output voltage within the range of 0.8V (
.
08
.
) to 4.0V (
.
40
.
)
in 0.1V steps
.
∗
: Select from (
.
B
.
) without auto-discharge function or
(
.
D
.
) with auto-discharge function
WLCSP-4-P5 5,000 pcs
RP200Z
.
xx
.
1
.
∗
-TR-F
DFN(PLP)1212-6
5,000 pcs
RP200K
.
xx
.
1
.
∗
-TR
SOT-23-5 3,000 pcs
RP200N
.
xx
.
1
.
∗
-TR-FE
PACKAGES (Top View) TYPICAL CHARACTERISTIC
WLCSP-4-P5
DFN
(
PLP
)
1212-6
SOT-23-5
RP200x261x Dropout Voltage vs. Output Current
85
°
C
25
°
C
-40
°
C
0
350
200
300
100
150
250
50
0200100 300
Output Current I
OUT
(mA
)
Dropout Voltage V
DIF
(mV)
2 1
3 4
3
4
2
5
1
6
1 3
5 4
2
1 VDD
2 CE
3 GND
4 VOUT
1 AE
2 GND
3 CE
4 VDD
5 NC
6 VOUT
1 VDD
2 GND
3 CE
4 AE
5 VOUT
∗) WLCSP-4-P5 does not exist AE pin.
APPLICATIONS
• Power source for hand-held communication equipment, camera and VCRs
• Power source for home appliances and digital home appliances
•
Power source for battery-powered equipment
AE
AE