OKY Datasheet, PDF (1/22 Pages) Murata Power Solutions Inc. – Adjustable Output 3 and 5-Amp DOSA-SMT DC/DC Converters

www.murata-ps.com
OKY-T/3,T/5-D12 Series
Adjustable Output 3 and 5-Amp DOSA-SMT DC/DC Converters
Typical unit
PRODUCT OVERVIEW
The OKY-T/3 and -T/5 series are miniature non-
isolated Point-of-Load (POL) switch mode DC/DC
power converters for embedded applications. The
module is fully compatible with Distributed-power
Open Standards Alliance (DOSA) industry-standard
specifications (www.dosapower.com). Applications
include powering CPU’s, datacom/telecom systems,
distributed bus architectures (DBA), programmable
logic and mixed voltage systems.
The wide input range is 8.3 to 14 Volts DC. Two
maximum output currents are offered, 3 Amps (T/3
models) or 5 Amps (T/5 models). Based on fixed-
frequency synchronous buck converter switching
topology, the high power conversion efficient Point
of Load (POL) module features programmable
output voltage and On/Off control. These converters
also include under voltage lock out (UVLO), output
short circuit protection, over-current and over
temperature protections.
These units are designed to meet all standard
UL/EN/IEC 60950-1 safety and FCC EMI/RFI
emissions certifications and RoHS6 hazardous
substance compliance.
FEATURES
■ Non-isolated SMT POL DC/DC power module
■ 8.3-14Vdc input voltage range
■ Programmable output voltage from 0.75-5.5Vdc
■ 3 Amp (T/3) or 5 Amp (T/5) output current models
■ Drives 1000 μF capacitive loads
■ High power conversion efficiency 93% at 3.3 Vout
■ Outstanding thermal derating performance
■ Over temperature and over current protection
■ On/Off control
■ UL/EN/IEC 60950-1 safety
■ Industry-standard (DOSA) surface-mount package
■ RoHS6 hazardous substance compliance
Contents
Page
Description, Connection Diagram, Photograph
1
Ordering Guide, Model Numbering
2
Mechanical Specifications, Input/Output Pinout
3
Detailed Electrical Specifications
4
Output Voltage Adjustment, Soldering Guidelines
5
Application Notes
6
OKY-T/3-D12 Performance Data and Oscillograms
9
OKY-T/5-D12 Performance Data and Oscillograms
15
Tape and Reel Information
21
+Vin
F1
On/Off
Control
External
DC
Power
Source
Open = On
Closed = Off
Connection Diagram
Controller
t
4XJUDIJOH
t
'JMUFST
t
$VSSFOU
4FOTF
Reference and
Error Amplifier
+Vout
Trim
Common
Figure 1. OKY-T/3, -T/5
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See specifications.
Common
Ḥ
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
MDC_MDC_OKY-T/3,T/5-D12 Series.B03 Page 1 of 22