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PRODUCT OVERVIEW
OKY T/3, T/5-W5 Series
Adjustable Output 3 and 5-Amp DOSA-SMT PoLs
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
speci?cations (www.dosapower.com). Applications
include powering CPU’s, datacom/telecom systems,
programmable logic and mixed voltage systems.
frequency synchronous buck converter switching
topology, the high power conversion ef?cient 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
Typical unit
FEATURES
Non-isolated SMT POL DC/DC power module
■
2.4-5.5Vdc input voltage range
■
Programmable output voltage from 0.7525-3.63Vdc
■
The wide input range is 2.4 to 5.5 Volts DC. Two
maximum output currents are offered, 3 Amps (T/3
models) or 5 Amps (T/5 models). Based on ?xed-
UL/EN/IEC 60950-1 safety and FCC EMI/RFI
emissions certi?cations and RoHS-6 hazardous
substance compliance.
■
■
■
■
■
■
■
■
■
3 Amp (T/3) or 5 Amp (T/5) output current models
Drives 1000 μF ceramic capacitive loads
High power conversion ef?ciency at 96%
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
RoHS-6 hazardous substance compliance
Contents
Description, Connection Diagram, Photograph
Ordering Guide, Model Numbering, Product Label
Mechanical Speci?cations, Input/Output Pinout
Detailed Electrical Speci?cations
Output Voltage Adjustment, Soldering Guidelines
Technical Notes
OKY-T/3-W5 Performance Data and Oscillograms
OKY-T/5-W5 Performance Data and Oscillograms
Tape and Reel Information
Page
1
2
3
4
5
6
9
13
19
Connection Diagram
+Vin
+Vout
F1
On/Off
External
DC
Control
Controller
Trim
Power
Source
Open = On
Closed = Off
(Positive
On/Off)
Common
Reference and
Error Ampli ?er
Common
Figure 1. OKY-T/3, -T/5
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
　
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKY-T/3,T/5-W5 Series.A12 Page 1 of 19
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