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Features
Evaluation
Module
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
Number
Voltage Range
[VDC]
R-78S3.3-0.1
0.65-3.15
Specifications
(measured @ ta= 25°C, 1.5Vin, full load after warm up unless otherwise stated)
BASIC CHARACTERISTICS
Parameter
Under Voltage Lockout
Overload Capability
(3)
Quiescent Current
Start-up Time
Rise Time
Internal Operating Frequency
Minimum Load
Dropout Voltage
Output Ripple and Noise
ON/OFF CTRL
Input Current of CTRL Pin
Standby Current
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
www.recom-power.com
• 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
Output
Output
Voltage
Current
@ min Vin
(3)
[VDC]
[mA]
[%]
3.3
100
Condition
DC-DC OFF
peak duty cycle 10%
DC-DC ON
DC-DC OFF
Efficiency
Max. Capacitive
(1)
@ typ. Vin
Load
(2)
[%]
[µF]
92
93
470
Min.
Typ.
Max.
0.4VDC
150%, 10s
160µA
2ms
800µs
1200kHz
0%
150mV
100mVp-p
Open or 0.7V ≤ VCTRL<Vin
Short to GND or VCTRL<0.1V
5µA
7µA
REV.: 2/2020
Evaluation Module
R-78S3.3-0.1-EVM-1
P-1
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Related Manuals for Recom R-78S Series
Summary of Contents for Recom R-78S Series
- Page 1 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 www.recom-power.com REV.: 2/2020...
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Page 2: Component Placement
• To set the R-78S into sleep mode, apply the provided jumper on both pins of J6 (CTRL to GND). Component Placement R-78SXX-0.1-EVM-1 FOR EVALUATION ONLY BAT1 VEXT VBAT VEXT VBAT CON1 I_OUT I_IN VOUT GND GND CTRL www.recom-power.com REV.: 2/2020... -
Page 3: Component List
DO NOT PLACE A JUMPER ON J2. DOING SO WILL CAUSE THE BATTERY TO SHORT CIRCUIT AND CREATE THE RISK OF FIRE. Schematic 0022032021 R-78S3.3-0.1 CON1 R-78S 0022032021 0022032021 Vout 22-03-2031 GND CTRL MHSI22 0022032021 BAT1 0022032021 0022032021 002032021 2460 ZX62D-B-5P8 www.recom-power.com REV.: 2/2020... - Page 4 Conn Header 3POS .100 Vert Tin 22-03-2031 Molex MHS122 Switch Slide SPDT 300mA 30V MHS122 APEM Inc R-78S3.3-0.1 DC DC Converter 3.3V R-78S3.3-0.1 RECOM ZX62D-B-5P8 Conn RCPT USB Micro B SMD ZX62D-B-5P8 Hirose Electric Co Ltd CON1 www.recom-power.com REV.: 2/2020...
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Page 5: Packaging Information
RECOM’s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications.