REV.: 2/2020
P-1
R-78S3.3-0.1-EVM-1
Evaluation Module
Features
Evaluation
Module
• 3.3V from a single AA battery or from
an external source (boost converter)
• Efficiency 93%, >80% at 10% load
• Input voltage range down to 0.65V
• Input and output power measurement capability
• Micro-USB type B or 0.100” (2.54mm) pin output
BASIC CHARACTERISTICS
Parameter
Condition
Min.
Typ.
Max.
Under Voltage Lockout
DC-DC OFF
0.4VDC
Overload Capability
(3)
peak duty cycle 10%
150%, 10s
Quiescent Current
160µA
Start-up Time
2ms
Rise Time
800µs
Internal Operating Frequency
1200kHz
Minimum Load
0%
Dropout Voltage
150mV
Output Ripple and Noise
100mVp-p
ON/OFF CTRL
DC-DC ON
DC-DC OFF
Open or 0.7V
≤
VCTRL<Vin
Short to GND or VCTRL<0.1V
Input Current of CTRL Pin
5µA
Standby Current
7µA
Description
The R-78S3.3-0.1-EVM-1 Evaluation Module generates 3.3V from a single AA battery or from an external
source. By using the external input source, any voltage source (other types of batteries, energy
harvesters, etc.) in the range from 0.65V to 3.15V can be used. The evaluation module contains
a AA battery holder, power switch, R-78S3.3-0.1 boost converter and a micro-USB connector.
Jumper headers are provided to allow various test measurements to be made. An enable pin puts the
R-78S into sleep mode where it draws only 7uA from the battery.
Selection Guide
Part
Input
Output
Output
Efficiency
(1)
Max. Capacitive
Number
Voltage Range
(3)
Voltage
Current
@ min Vin @ typ. Vin
Load
(2)
[VDC]
[VDC] [mA]
[%] [%]
[µF]
R-78S3.3-0.1
0.65-3.15
3.3 100
92 93
470
Notes:
Note1: Efficiency is tested at full load. Typ. Vin = 1.5V
Note2: Max. capacitive load is tested at nominal input and full resistive load
Note3: For more information, please refer to “Overload Capability Graph” on page P-2
Specifications
(measured @ ta= 25°C, 1.5Vin, full load after warm up unless otherwise stated)
