Datasheet

ManualsBrandsRecom ManualsBoard Mounted DC / DC ConvertersDC/DC Converter 650mV ... 3.3V 3.3V 100mA

www.recom-power.com

REV.: 5/2018 I-1

Features

Switching

Regulator

• Boost converter

• Efﬁciency 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

• IEC/EN62368-1 certiﬁed, CB report

R-78S

Description

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

input voltage range of 0.65V-3.3V means that alkaline, NiCd, NiMH, zinc-carbon or lithium

chemistry cells can be used to generate a stable 1.8V, 3.3V or 3.6V 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.

DC/DC Converter

0.1 Amp

SIP4

Single Output

Speciﬁcations (measured @ Ta= 25°C,1.5Vin, full load and after warm-up unless otherwise stated)

BASIC CHARACTERISTICS

Parameter Condition Min. Typ. Max.

Input Voltage

R-78S1.8-0.1

R-78S3.3-0.1

R-78S3.6-0.1

nom. Vin=

1.2VDC

1.5VDC

0.65VDC

1.2VDC

1.5VDC

1.3VDC

3.15VDC

3.3VDC

Under Voltage Lockout DC-DC OFF 0.4VDC

Overload Capability

(4)

peak duty cycle 10% 150%, 10s

Quiescent Current

Vout=1.8VDC 100µA

Vout=3.3VDC 160µA

Vout=3.6VDC 180µA

Start-up time

Vout=1.8VDC, use E-cap 330µF 4ms

Vout=3.3VDC and 3.6VDC

2ms

Rise time

Vout=1.8VDC, use E-cap 330µF 3.5ms

Vout=3.3VDC and 3.6VDC

800µs

Internal Operating Frequency

1200kHz

continued on next page

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-78S1.8-0.1 0.65-1.3 1.8 100 92 93 470

R-78S3.3-0.1 0.65-3.15 3.3 100 92 93 470

R-78S3.6-0.1 0.65-3.3 3.6 100 92 93 470

Notes:

Note1: Efﬁciency is tested at nom. input voltage and full load. (refer to Basic characterisitc below)

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

Note3: For more information, please refer to “Line Derating” on page I-2

Notes:

Note4: For more information, please refer to “Overload Capability Graph” on page I-2

IEC/EN62368-1 certiﬁed

CB report, EAC

EN55032 compliant

Model Numbering

Output Voltage

R-78S-__-0.1

Output Current

www.recom-power.com/eval-ref-boards

Summary of content (5 pages)

PAGE 1
• • • • • • • Features Switching Regulator Boost converter Efficiency 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 IEC/EN62368-1 certified, CB report DC/DC Converter R-78S Description The R-78S is a DC/DC boost converter designed to run from single cell batteries. The input voltage range of 0.65V-3.3V means that alkaline, NiCd, NiMH, zinc-carbon or lithium chemistry cells can be used to generate a stable 1.
PAGE 2
R-78S DC/DC Converter Series Specifications (measured @ Ta= 25°C,1.5Vin, full load and after warm-up unless otherwise stated) Parameter Condition Min. Typ. Minimum Load 0% Dropout Voltage Output Ripple and Noise Vout= 1.8VDC 500mV Vout= 3.3VDC 150mV Vout= 3.6VDC 300mV 20MHz BW, 10%-100% load 100mVp-p Open or 0.7V ≤ VCTRL
PAGE 3
R-78S DC/DC Converter Series Specifications (measured @ Ta= 25°C,1.5Vin, full load and after warm-up unless otherwise stated) REGULATIONS Parameter Condition Value Output Accuracy ±3.0% typ. Line Regulation low line to high line, full load ±0.3% typ. Load Regulation 10% to 100% load ±1.0% typ.
PAGE 4
R-78S DC/DC Converter Series Specifications (measured @ Ta= 25°C,1.
PAGE 5
R-78S DC/DC Converter Series Specifications (measured @ Ta= 25°C,1.5Vin, full load and after warm-up unless otherwise stated) INSTALLATION AND APPLICATION Standard Application Circuits +Vin R-78S3.3-0.1 Vout CTRL Vin GND Single Cell Battery N.C. Vin R-78S N.C. 0V 3.3V Application +Vout Vout CTRL GND Vin R-78S Vout CTRL GND C1 0V Max. Capacitive Load ±470µF C2 N.C. -Vout Power-Save Application Vcc R-78S3.3-0.1 GND 1.5V Vcc CTRL 3.3V R1 5µA WAKE C SLEEP µP 2.