OKYT5D12NC Converters Datasheet 

Part Number  OKYT5D12NC 
Description  Adjustable Output 3 and 5Amp DOSASMT DC/DC Converters 
Manufacture  Murata 
Total Page  21 Pages 
Datasheet 
www.murataps.com
OKYT/3,T/5D12 Series
Adjustable Output 3 and 5Amp DOSASMT DC/DC Converters
Typical unit
PRODUCT OVERVIEW
The OKYT/3 and T/5 series are miniature
nonisolated PointofLoad (POL) DC/DC power
converters for embedded applications. The module
is fully compatible with Distributedpower Open
Standards Alliance (DOSA) industrystandard
speciﬁcations (www.dosapower.com). Applications
include powering CPU’s, datacom/telecom systems,
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, overcurrent and over
temperature protections.
These units are designed to meet all standard
UL/EN/IEC 609501 safety and FCC EMI/RFI
emissions certiﬁcations and RoHS6 hazardous
substance compliance.
FEATURES
■ Nonisolated SMT POL DC/DC power module
■ 8.314Vdc input voltage range
■ Programmable output voltage from 0.75255.5Vdc
■ 3 Amp (T/3) or 5 Amp (T/5) output current models
■ Drives 1000 μF ceramic 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 609501 safety
■ Industrystandard (DOSA) surfacemount package
■ RoHS6 hazardous substance compliance
Contents
Description, Connection Diagram, Photograph
Ordering Guide, Model Numbering
Mechanical Speciﬁcations, Input/Output Pinout
Detailed Electrical Speciﬁcations
Output Voltage Adjustment, Soldering Guidelines
Technical Notes
Product Label
OKYT/3D12 Performance Data and Oscillograms
OKYT/5D12 Performance Data and Oscillograms
Tape and Reel Information
Page
1
2
3
4
5
6
8
9
15
21
Connection Diagram
+Vin
F1
On/Off
Control
External
DC
Power
Source
Open = On
Closed = Off
(Positive
On/Off)
Controller
t4XJUDIJOH
t'JMUFST
t$VSSFOU4FOTF
Reference and
Error Ampliﬁer
Common
Figure 1. OKYT/3, T/5
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speciﬁcations.
+Vout
Trim
Common
For full details go to
www.murataps.com/rohs
www.murataps.com/support
MDC_OKYT/3,T/5D12 Series.B15 Page 1 of 21

OKYT/3,T/5D12 Series
Adjustable Output 3 and 5Amp DOSASMT DC/DC Converters
Performance Speciﬁcations Summary and Ordering Guide
ORDERING GUIDE
Output
Input
Package
Root Model ➁
VOUT
(Volts)
IOUT R/N (mVpp)➄ Regulation (Max.)➂
(Amps Power
VIN Nom. Range
max) (Watts)
Max.
Line Load (Volts) (Volts)
OKYT/3D12NC 0.755.5 ➆ 3
15
25 ±0.1% ±0.2% 12 8.314
OKYT/3D12PC 0.755.5 ➆ 3
15
25 ±0.1% ±0.2% 12 8.314
OKYT/5D12NC 0.755.5 ➅ 5
25
25 ±0.2% ±0.5% 12 8.314
OKYT/5D12PC 0.755.5 ➅ 5
25
25 ±0.2% ±0.5% 12 8.314
IIN, IIN, Efﬁciency
no load full load
(mA) (Amps) Min. Typ.
80 1.34 91.5% 93%
80 1.34 91.5% 93%
80 2.24 91.5% 93%
80 2.24 91.5% 93%
Case C72 ➀
0.47 x 0.82 x 0.28
(11.9 x 20.8 x 7.0)
0.47 x 0.82 x 0.28
(11.9 x 20.8 x 7.0)
0.47 x 0.82 x 0.28
(11.9 x 20.8 x 7.0)
0.47 x 0.82 x 0.28
(11.9 x 20.8 x 7.0)
Pinout
P78
P78
P78
P78
➀ Dimensions are in inches (mm).
➁ These are partial model numbers. Please refer to the part number structure for complete ordering part numbers.
➂ All specifications are at nominal line voltage, Vout=nominal (5V for D12 models) and full load, +25 ˚C. unless
otherwise noted.
Output capacitors are 1 μF ceramic and 10 μF electrolytic in parallel. Input cap is 22 μF. See detailed specifica
tions.
I/O caps are necessary for our test equipment and may not be needed for your application.
Vin must be 2V or higher than Vout for 3.3 to 5V outputs.
Ripple and Noise is shown at Vout=1V. See specs for details.
➅Max. VOUT = 5.1V at IOUT = 5A.
➆Max. VOUT = 5.1V at IOUT = 3A.
PART NUMBER STRUCTURE
OK Y  T / 5  D12 N  C
Okami Nonisolated PoL
Surface Mount
Trimmable Output
Voltage Range
0.75255.5V
Special Customer Conﬁguration part number:
OKYT/5D12NCCIS
Maximum Rated Output
Current in Amps
RoHS Hazardous
Substance Compliance
C = RoHS6 (does not claim EU RoHS exemption
7b–lead in solder)
On/Off Polarity
P = Positive Polarity
N = Negative Polarity
Input Voltage Range
8.314V
Note: Some model number combinations
may not be available. Contact Murata
Power Solutions for availability.
www.murataps.com/support
MDC_OKYT/3,T/5D12 Series.B15 Page 2 of 21

Features  www.murataps.com OKYT/3,T/5D12 Serie s Adjustable Output 3 and 5Amp DOSASM T DC/DC Converters Typical unit PRODU CT OVERVIEW The OKYT/3 and T/5 series are miniature nonisolated PointofLo ad (POL) DC/DC power converters for emb edded applications. The module is fully compatible with Distributedpower Open Standards Alliance (DOSA) industrysta ndard speciﬁcations (www.dosapower.co m). Applications include powering CPU s, datacom/telecom systems, programmab le logic and mixed voltage systems. The wide input range is 8.3 to 14 Volts DC . Two maximum output currents are offer ed, 3 Amps (T/3 models) or 5 Amps (T/5 models). Based on ﬁxed frequency sy nchronous buck converter switching topo logy, the high power conversion efﬁci ent 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, overcurrent and over temperature protections. These units are designed to meet all . 
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