R420-1.8 Datasheet, PDF (1/5 Pages) Recom International Power – Designed For 4-20mA Loop Operation And Energy

Features
Switching
Regulator
• Designed For 4-20mA Loop Operation And Energy
Scavenging Applications
• Open Frame SMD Design
• -40°C to +105°C Operating Temperature @ Full Load
• Continuous Short Circuit Protection
• No Minimum Load Required
• 5000m Operating Altitude
DC/DC Converter
R420-1.8/PL
Description
The R420 has been designed for auxiliary power from 4-20mA loops and other low power budget
applications that require a maximum input current <3.6mA. This low profile SMD converter delivers
a regulated, short-circuit protected output that can be adjusted between 1.8V and 5V with a single
external resistor and delivers three times the output current of equivalent linear regulators to power
microprocessors, data-loggers and HART digital modems without affecting the analog 4-20mA signal.
The R420 will also find many applications in energy scavenging and indoor solar powered circuits.
Low
Current
Regulator
3^{3 YEAR}
warranty
Selection Guide
Part
Number
R420-1.8/PL
Input
Voltage Range
(VDC)
10-36
Adjustable Output
Voltage Range
(VDC)
1.8-5.0
Output
Current
(mA)
10
Efficiency
typ. ⁽¹⁾
(%)
76
Max. Capacitive
Load ⁽²⁾
(µF)
1000
Notes:
Note1: Efficiency is tested at 10-36VDC, full load and +25°C ambient.
Note2: Max cap load is tested at nominal input and full resistive load.
Model Numbering
R420-1.8/PL__
Packaging ⁽³⁾
Notes:
Note3: add suffix “-R” for Tape and Reel Packaging
Ordering Examples:
R420-1.8/PL, Standard Tray Packaging (40pcs/Tray)
R420-1.8/PL-R, Tape and Reel Packaging (400pcs/T&R)
Specifications (measured @ ta= 25°C, full load, nominal input voltage and after warm-up)
BASIC CHARACTERISTICS
Parameter
Internal Input Filter
Input Voltage Range
Quiescent Current
Under Voltage Lockout
Output Voltage Trimming
Minimum Load
ON/OFF CTRL
Internal Operating Frequency
Output Ripple and Noise
Condition
nom. Vin= 24V
DC-DC ON
DC-DC OFF
with 3.75kW
DC-DC ON
DC-DC OFF
20MHz BW, 0-100% load
Min. Typ. Max.
1µF Capacitor
10VDC 24VDC 36VDC
0.5mA 1mA
6VDC
5VDC
5VDC
0%
Open or 2V<Vr<5V
Short or 0V<Vr<0.2Vr
45kHz 50kHz 52kHz
30mVp-p
continued on next page
www.recom-power.com
REV.: 1/2017
EN60950-1 Certified
EN55022 Certified
I-1