www.murata-ps.com
OKI-T/3-W40 Series
Adjustable Output 3-Amp DOSA-SMT DC/DC Converters
PRODUCT OVERVIEW
The OKI-T/3 series are miniature non-isolated
Point-of-Load (POL) 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, industrial 24V transducers and
POS terminals.
The wide input range is 16 to 40 Volts DC.
The maximum output current is 3 Amps. 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 certifications and RoHS-6
hazardous substance compliance.
PRELIMINARY
Typical unit
FEATURES
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Non-isolated SMT POL DC/DC power module
16-40Vdc input voltage range
Programmable output voltage from 0.7525-5.5Vdc
3 Amp output current models
Drives 1000 μF ceramic capacitive loads
High power conversion efficiency 86% at 5 Vout
Outstanding thermal derating performance
Over temperature and over current protection
On/Off control
UL/EN/IEC 60950-1 safety (pending)
Industry-standard (DOSA) surface-mount package
RoHS-6 hazardous substance compliance
Contents
Description, Connection Diagram, Photograph
Ordering Guide, Model Numbering, Product Labeling
Mechanical Specifications, Input/Output Pinout
Detailed Electrical Specifications
Output Voltage Adjustment, Soldering Guidelines
Application Notes
Performance Data and Oscillograms
Page
1
2
3
4
5
6
9
Connection Diagram
+Vin
F1
+Vout
On/Off
Control
Controller
External
DC
Power
Source
Trim
Open = On
Closed = Off
(Positive
On/Off)
Common
Figure 1. OKI-T/3
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See specifications.
Reference and
Error Amplifier
Common
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
05 Nov 2009
email: sales@murata-ps.com
MDC_OKI-T/3-W40 Series.A01_D8
Page 1 of 12
MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
