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www.murata-ps.com
PRODUCT OVERVIEW
OKY-T/10 & T/16-W5 Series
Programmable DOSA-SMT 10/16-Amp DC/DC Converters
Typical unit
FEATURES
Wide 2.4-5.5 VDC input range Non-isolated output adjustable from 0.7525 to 3.63 Volts up to 16 Amps DOSA-compatible SMT package Drives 1000 F ceramic capacitive loads Optional sequence/tracking operation Outstanding thermal performance and derating Short circuit protection On/Off control High efficiency with no heatsink Over temperature protection Designed to meet UL/EN/IEC 60950-1 safety approvals.
The OKY-T/10 and -T/16 series are SMT nonisolated 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, datacom/telecom systems, programmable logic and mixed voltage systems. The wide input range is 2.4 to 5.5 Volts DC. Two maximum output currents are offered, 10 Amps (T/10 models) or 16 Amps (T/16 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. An optional Sequence/Tracking input allows controlled ramp-up and ramp-down outputs. The Sense input provides remote sense. 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 RoHS-6 hazardous substance compliance.
Contents of full data sheet Description, Connection Diagram, Photograph Ordering Guide, Model Numbering Mechanical Specifications, Input/Output Pinout Detailed Electrical Specifications Output Voltage Adjustment, Soldering Guidelines Application Notes Performance Data and Oscillograms - OKY2-T/16-W5 Tape and Reel Information
Page 1 2 3 4 5 6 9 16
Simplified Block Diagram
+Vin F1 +Vout
On/Off Control
Sense Controller
External DC Power Source
Trim Open = On Closed = Off (Positive On/Off) Common Reference and Error Amplifier
Common
Figure 1. OKY-T/10, -T/16
Sequence/Tracking (OKY2 only)
Note: Murata Power Solutions strongly recommends an external input fuse, F1. See specifications.
For full details go to www.murata-ps.com/rohs
www.murata-ps.com
19 Oct 2009
email: sales@murata-ps.com
MDC_OKY_T10T16.W5.A01_short Page 1 of 3
This data sheet contains core information only. Please click here for the full data sheet.
OKY-T/10 & T/16-W5 Series
Programmable DOSA-SMT 10/16-Amp DC/DC Converters
Performance Specifications and Ordering Guide
ORDERING GUIDE On/Off Polarity Sequence/ Tracking Output VOUT (Volts) 0.7525-3.63 0.7525-3.63 Input Package, C83
Model Number OKY-T/10-W5P-C OKY-T/10-W5N-C
R/N (mVp-p) Regulation (Max.) VIN Efficiency c IOUT IIN, IIN, (Amps Power Nom. Range no load full load max) (Watts) Max. f Line Load (Volts) (Volts) (mA) (Amps) Min. Typ. 10 10 10 10 16 16 16 16 33.0 33.0 33.0 33.0 52.8 52.8 52.8 52.8 20 20 20 20 50 50 50 50 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 1% 1% 1% 1% 1% 1% 1% 1% 5 5 5 5 5 5 5 5 2.4-5.5 2.4-5.5 2.4-5.5 2.4-5.5 2.4-5.5 2.4-5.5 2.4-5.5 2.4-5.5 80 80 80 80 80 80 80 80 7.58 7.58 7.58 7.58 11.12 11.12 11.12 11.12 92% 92% 92% 92% 95% 95% 95% 95%
Case 1.3x0.53x0.33 (33x13.5x8.3) 1.3x0.53x0.33 (33x13.5x8.3) 1.3x0.53x0.33 (33x13.5x8.3) 1.3x0.53x0.33 (33x13.5x8.3) 1.3x0.53x0.33 (33x13.5x8.3) 1.3x0.53x0.33 (33x13.5x8.3) 1.3x0.53x0.33 (33x13.5x8.3) 1.3x0.53x0.33 (33x13.5x8.3)
Pinout P66 P66 P66 P66 P66 P66 P66 P66
Pos. Neg. Pos. Neg. Pos. Neg. Pos. Neg.
No No Yes Yes No No Yes Yes
OKY2-T/10-W5P-C 0.7525-3.63 OKY2-T/10-W5N-C 0.7525-3.63 OKY-T/16-W5P-C OKY-T/16-W5N-C 0.7525-3.63 0.7525-3.63
92.5% 95% 92.5% 95% 92.5% 95% 92.5% 95%
OKY2-T/16-W5P-C 0.7525-3.63 OKY2-T/16-W5N-C 0.7525-3.63

Efficiency is shown at Vout=1V..
All specifications are at nominal line voltage, Vout=nominal (3.3V) and full load, +25 deg.C. unless otherwise noted. Output capacitors are 1 F ceramic and 10 F electrolytic in parallel. Input cap is 22 F. See detailed specifications. I/O caps are necessary for our test equipment and may not be needed for your application.
Use adequate ground plane and copper thickness adjacent to the converter. f Ripple and Noise (R/N) is shown at Vout=1V. See specs for details. g Dimensions are in inches (mm).
PART NUMBER STRUCTURE
OK Y 2 - T / 16 - W5 P - C
Okami Non-isolated PoL Surface Mount Sequence/tracking Blank=Not installed, delete seq/track contact 2=Installed, add seq/track contact Trimmable Output Voltage Range W5 Models = 0.7525-3.63V RoHS Hazardous Substance Compliance C = RoHS-6 (does not claim EU RoHS exemption 7b-lead in solder) On/Off Polarity P = Positive Polarity N = Negative Polarity
Input Voltage Range W5 = 2.4-5.5V
Maximum Rated Output Current in Amps
www.murata-ps.com
19 Oct 2009
email: sales@murata-ps.com
MDC_OKY_T10T16.W5.A01_short Page 2 of 3
This data sheet contains core information only. Please click here for the full data sheet.
OKY-T/10 & T/16-W5 Series
Programmable DOSA-SMT 10/16-Amp DC/DC Converters
MECHANICAL SPECIFICATIONS
PIN #1 THIS CORNER (FARSIDE)
TOP VIEW
[13.5] 0.53 REF
ISOMETRIC VIEW
[6.9] 0.27 [12.7] 0.50 [8.4] 0.33
NOZZLE PICKUP POINT
END VIEW
PIN #1 [1.60] 0.063
SIDE VIEW MTG PLANE
[3.05] 0.120 [33.0] 1.30 [19.3] 0.760 REF 4x [4.83] 0.190
3 BOTTOM VIEW 2
[0.64] 0.025
4
5
6
7
[10.29] 0.405 [13.5] 0.53
1
[29.9] 1.177 [1.22] 0.048
[1.91] 0.075 [33.0] 1.30 REF [29.9] 1.177 [26.85] 1.057 [22.02] 0.867
[.064] 0.025
[3.05] 0.120 MIN [3.43] 0.135 MAX [1.91] 0.075
[13.5] 0.53 REF [2.41] 0.095 MIN [2.79] 0.110 MAX
2 3 4 56 7
1
[10.29] 0.405
DIMENSIONS ARE IN INCHES [mm] TOLERANCES: x.xxx .02 in. x.xx .010 in. ANGLES: 1
[7.54] 0.297 [12.37] 0.487 [17.20] 0.677
[1.22] 0.048
RECOMMENDED PAD LAYOUT
COMPONENTS SHOWN ARE FOR REFERENCE ONLY MATERIAL: SMT PINS: COPPER ALLOY
THIRD ANGLE PROJECTION
Case C83
I/O CONNECTIONS Pin Function P66 1 On/Off Control * 2 +Vin 3 Vtrack Seq** 4 Gnd (Common) 5 +Vout 6 Trim 7 Sense * The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) polarity. ** Vtrack Seq applies only to OKY2 models. No connection for OKY models.
FINISH: (ALL PINS) GOLD (5u"MIN) OVER NICKEL (50u" MIN)
Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. (c) 2009 Murata Power Solutions, Inc.
www.murata-ps.com/locations
19 Oct 2009
email: sales@murata-ps.com
MDC_OKY_T10T16.W5.A01_short Page 3 of 3

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