I-1

REV.: 0/2017

www.recom-power.com

DC/DC Converter

3 YEAR

warranty

3

BASIC CHARACTERISTICS

Parameter

Condition

Min.

Typ.

Max.

Minimum Start-up Voltage

0.8VDC

Input Voltage Range

40mA (continuous)

100mA

0.65VDC

1.5VDC

3.15VDC

No Load Power Consumption

240µW

Under Voltage Lockout

DC-DC OFF

0.4VDC

Quiescent Current

160µA

Start-up time

2ms

Rise Time

800µs

Internal Operating Frequency

1200kHz

Minimum Load

0%

Dropout Voltage

150mV

Output Ripple and Noise

20MHz BW

100mVp-p

ON/OFF CTRL

DC-DC ON

DC-DC OFF

Open or 0.7V

Standby Current

7µA

continued on next page

Description

The R-78S is a DC/DC boost converter designed to run from single cell batteries. The input voltage

range of 0.65V-3.15V means that alkaline, NiCd, NiMH, zinc-carbon or lithium chemistry cells can be

used to generate a stable 3.3V output to power microprocessors, WLAN/Bluetooth modules and IoT

systems. The very high efficiency and low standby consumption can be used to extend battery lifetimes

until the „last gasp“ to get the maximum available energy out of the cell. The wide operating temperature

of -40°C to +100°C, short circuit protection, OTP, Class A EMC and 3-year warranty round off this high

performance converter.

Features

Switching

Regulator

• Boost Converter

• Efficency 93% , >80% With 10% Load

• Input Range Down To 0.65V

• Continuous Short Circuit Protection

• 7µA Input Current In Standby

• -40°C To +100°C Operation

• EN62368-1 + AM2 (pending)

0.1 Amp

SIP4

Single Output

R-78S

Selection Guide

Part

Input

Output

Max. Output

Max. Capacitive

Number

Voltage Range Voltage

Current

@ min Vin

@ max. Vin

[VDC]

[VDC]

[mA]

[%]

[%]

[µF]

R-78S3.3-0.1

0.65-3.15

3.3

100

92

93

100

EN62368-1 (pending)

EN55022 compliant

Notes:

Note1: Efficiency is tested by 1.5V input voltage and full load.

Note2: Max. Cap Load is tested by nominal input and full resisitive load.