Datasheet

www.recom-power.com
REV.: 5/2018 I-5
DC/DC Converter
Specifications (measured @ Ta= 25°C,1.5Vin, full load and after warm-up unless otherwise stated)
R-78S
Series
INSTALLATION AND APPLICATION
PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH) tube 520.0 x 11.2 x 18.2mm
Packaging Quantity 42pcs
Storage Temperature Range -55°C to +125°C
Storage Humidity non-condensing 5% to 95% RH
GND
Vin
Vout
CTRL
3.3V
Application
R-78S3.3-0.1
Single
Cell
Battery
N.C.
GND
Vin
Vout
0V
0V
-Vout
+Vout
+Vin
CTRL
R-78S
N.C.
GND
C1 C2
Vin
Vout
CTRL
R-78S
N.C.
Max. Capacitive
Load ±470µF
SLEEP
WAKE
1.5V
µP
WLAN
GND CTRL
Vcc
C
R
1
R
2
R-78S3.3-0.1
5µA
+
-
+
-
Vin
Vout
3.3V
GND
R-78S3.6-0.1
Solar
or
TEG
Rechargeable
3.3V Cell
1.5V
1.8V - 3.3V
Air Quality
Sensor
BME680
Environmental
Sensor
ICL 7673
Autoswitch
1.8V - 3.3V
Microcontroller +
NVRAM
USB
USB
V
DD
Barometric
Pressure
Temperature
Humidity
Gas (VOC, CO)
V
DD
V
DDIO
R-78S1.8-0.1
SPI
+
-
3.3V
UART
GND
3.3V
2.9V
System
Power
Vcc
Active
(600µW)
Sleep Mode
(20µW)
Active
(600µW)
watchdog
wake-up
Standard Application Circuits
Power-Save Application
Energy Harverster (non-interruptable)
Air Quality Data Logger
The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The
products are not authorized for use in safety-critical applications without 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.
Air quality sensor and microcontroller operate at 1.8V
(50% power consumption compared to 3.3V). When
external USB is plugged in, supply voltage is switched
to 3.3V for fast data download.