OKY-T/3,T/5-D12 Series
www.murata-ps.com
Adjustable Output 3 and 5-Amp DOSA-SMT DC/DC Converters
PRODUCT OVERVIEW
The OKY-T/3 and -T/5 series are miniature frequency synchronous buck converter switching
non-isolated Point-of-Load (POL) DC/DC power topology, the high power conversion ef cient Point
converters for embedded applications. The module of Load (POL) module features programmable
is fully compatible with Distributed-power Open output voltage and On/Off control. These converters
Standards Alliance (DOSA) industry-standard also include under voltage lock out (UVLO), output
speci cations (www.dosapower.com). Applications short circuit protection, over-current and over
include powering CPUs, datacom/telecom systems, temperature protections.
programmable logic and mixed voltage systems. These units are designed to meet all standard
The wide input range is 8.3 to 14 Volts DC. Two UL/EN/IEC 60950-1 safety and FCC EMI/RFI
Typical unit
maximum output currents are offered, 3 Amps (T/3 emissions certi cations and RoHS-6 hazardous
models) or 5 Amps (T/5 models). Based on xed- substance compliance.
FEATURES
Non-isolated SMT POL DC/DC power module
8.3-14Vdc input voltage range
Programmable output voltage from 0.7525-5.5Vdc
Contents Page
3 Amp (T/3) or 5 Amp (T/5) output current models
Description, Connection Diagram, Photograph 1
Drives 1000 F ceramic capacitive loads
Ordering Guide, Model Numbering 2
High power conversion ef ciency 93% at 3.3 Vout Mechanical Speci cations, Input/Output Pinout 3
Detailed Electrical Speci cations 4
Outstanding thermal derating performance
Output Voltage Adjustment, Soldering Guidelines 5
Over temperature and over current protection
Technical Notes 6
On/Off control
Product Label 8
UL/EN/IEC 60950-1 safety OKY-T/3-D12 Performance Data and Oscillograms 9
OKY-T/5-D12 Performance Data and Oscillograms 15
Industry-standard (DOSA) surface-mount package
Tape and Reel Information 21
RoHS-6 hazardous substance compliance
Connection Diagram
+Vin +Vout
t4XJUDIJOH
F1
On/Off
Control
t' JMUFST
Controller
t$VSSFOU4FOTF
External
Trim
DC
Power
Reference and
Open = On
Source
Error Amplier
Closed = Off
(Positive
On/Off)
Common 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-D12 Series.B15 Page 1 of 21OKY-T/3,T/5-D12 Series
Adjustable Output 3 and 5-Amp DOSA-SMT DC/DC Converters
Performance Speci cations Summary and Ordering Guide
ORDERING GUIDE
Output Input Package
IOUT R/N (mVp-p) Regulation (Max.) IIN, IIN, Ef ciency
VOUT (Amps Power VIN Nom. Range no load full load
Root Model (Volts) max) (Watts) Max. Line Load (Volts) (Volts) (mA) (Amps) Min. Typ. Case C72 Pinout
0.47 x 0.82 x 0.28
OKY-T/3-D12N-C 0.75-5.5 3 15 25 0.1% 0.2% 12 8.3-14 80 1.34 91.5% 93% P78
(11.9 x 20.8 x 7.0)
0.47 x 0.82 x 0.28
OKY-T/3-D12P-C 0.75-5.5 3 15 25 0.1% 0.2% 12 8.3-14 80 1.34 91.5% 93% P78
(11.9 x 20.8 x 7.0)
0.47 x 0.82 x 0.28
OKY-T/5-D12N-C 0.75-5.5 5 25 25 0.2% 0.5% 12 8.3-14 80 2.24 91.5% 93% P78
(11.9 x 20.8 x 7.0)
0.47 x 0.82 x 0.28
OKY-T/5-D12P-C 0.75-5.5 5 25 25 0.2% 0.5% 12 8.3-14 80 2.24 91.5% 93% P78
(11.9 x 20.8 x 7.0)
Dimensions are in inches (mm). Vin must be 2V or higher than Vout for 3.3 to 5V outputs.
These are partial model numbers. Please refer to the part number structure for complete ordering part numbers.
Ripple and Noise is shown at Vout=1V. See specs for details.
All specifications are at nominal line voltage, Vout=nominal (5V for D12 models) and full load, +25 C. unless
Max. VOUT = 5.1V at IOUT = 5A.
otherwise noted.
Max. VOUT = 5.1V at IOUT = 3A.
Output capacitors are 1 F ceramic and 10 F electrolytic in parallel. Input cap is 22 F. See detailed specifica-
tions.
I/O caps are necessary for our test equipment and may not be needed for your application.
PART NUMBER STRUCTURE
OK Y - T / 5 - D12 N - C
Okami Non-isolated PoL RoHS Hazardous
Substance Compliance
C = RoHS-6 (does not claim EU RoHS exemption
7blead in solder)
Surface Mount
On/Off Polarity
P = Positive Polarity
N = Negative Polarity
Trimmable Output
Voltage Range
0.7525-5.5V
Input Voltage Range
8.3-14V
Maximum Rated Output Note: Some model number combinations
Current in Amps may not be available. Contact Murata
Power Solutions for availability.
Special Customer Con guration part number:
OKY-T/5-D12N-C-CIS
www.murata-ps.com/support
MDC_OKY-T/3,T/5-D12 Series.B15 Page 2 of 21