R1810x Series
600
nA I
Q
Low Quiescent Current Boost
DC/DC Converter for Energy Harvester
No.EA-423-231002
1
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
Efficiency[%]
Output Current IOUT [uA]
R1810x is a boost DC/DC converter for electrical power storage devices, especially dedicated for 1 cell
photovoltaic energy harvester since the start-up voltage is Typ.0.35V.
This product can start up with only 9uW, and applicable for charging 1 cell photovoltaic element. A system
which is working under low-illuminance environment can be composed with the R1810x.
● Providing a low quiescent current (I
Q_VOUT
=Typ.600 nA), and high efficiency (66%@ I
OUT
=5 µA)
● Start up with low input energy, 9 µW (low illuminance) is possible.
● Maximum power point control function is built-in.
● Start-up voltage: Typ. 0.35V
Max. 0.50V (0°C ≤ Ta ≤ 65°C),
Max. 0.55V (-40°C ≤ Ta ≤ 85°C)
● Input Voltage Range: 0.2 V to 2.1 V (V
SET
=2.7V)
● Output Voltage Range: 2.3 V to 4.5 V
● Output Voltage Accuracy: ±5.0%
● Low current consumption:
Typ.600 nA ( Ta = 25°C, at no load)
● Start-up power: 9 µW (V
MPSET
= 0.5V / V
SET
= 2.6V)
● Maximum Power Point Control Voltage Setting:
from 0.2V to 2.1V , in 50 mV increments
● Input Power Good Function
● Output Power Good Function
L = 22 µH, C
IN
= 22 µF, C
CP
= 22 nF, C
REG
= 4.7 µF
C
OUT
= 4.7 µF
Product name Package
Quantity per
Reel
R1810Zxxx$-E2-F
WLCSP-15-P1 5,000 pcs
R1810Lxxx$-E2 DFN2735-14 5,000 pcs
xxx: Select the combination Code number of the
set output voltage (V
SET
) and the set
maximum power voltage (V
MPSET
) ex. 001
Refer to the Product-specific Electrical
Characteristics for detail information.
$: Set output power good low (PGL)
(Refer to
selection guide.)
E
WLCSP-15-P1
2.88 x 1.68 x 0.36 (mm)
DFN2735-14
3.5 x 2.7 x 0.6 (mm)
● Energy harvesting modules such as 1 cell photovoltaic element /thermoelectric power generation.
OVERVIEW
KEY SPECIFICATIONS
KEY BENEFITS
EFFICIENCY CURVE
TYPICAL APPLICATION
SELECTION GUIDE
PACKAGES
APPLICATION
VIN=0.5V
、
VSET=2.6V
R1810x
No.EA-423-231002
2
SELECTION GUIDE
The set output voltage, the set maximum power point control voltage, and the output power good setting are
user-selectable options.
Selection Guide
Product Name Package Quantity per Reel Pb Free Halogen Free
R1810Zxxx$-E2-F WLCSP-15-P1 5,000 pcs Yes Yes
R1810Lxxx$-E2 DFN2735-14 5,000 pcs Yes Yes
x
xx: Select the combination of the set output voltage (V
SET
) and the set maximum power point control voltage
(V
MPSET
) by the code number. Ex. 001
Output voltage: from 2.3 V to 4.5 V in 0.1 V increments
Maximum power point control voltage: from 0.2 V to 2.1 V in 0.05 V increments
Refer to the Product-specific Electrical Characteristics for detail information.
* Contact our sales representatives for other codes.
It is recommended to set as V
SET
≥ V
MPSET
+ 1.0 V.
$: Set output power good low (PGL)
(1)
A ; Vset x 80%
B ; Vset x 70%
C ; Vset x 60%
D ; Vset x 50%
The accuracy of the OUTPG detection voltage depends on the output set voltage.
“－“; The OUTPG function cannot be used. please set the OUTPG pin to open.
(1)
OUTPG outputs "Low" when the output is below the threshold of PGL according to the table above.
Output power good low OUTPG detection accuracy
2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4 4.1 4.2 4.3 4.4 4.5
A - - -
B - - - - - - - -
C - - - - - - - - - - - - -
D - - - - - - - - - - - - - - - - - - - -
4.0%
4.0%
Set Output Voltage Vset [V]
$
5.0%
5.0%
4.0%
4.0%