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PRODUCT OVERVIEW
The OKL-T/3 series are miniature non-isolated Point-of-Load (PoL) DC/DC power converters for embedded applications. Featuring iLGA inspectable Land Grid Array (LGA) format, the OKL measures only 0.48 x 0.48 x 0.25 inches (12.2 x 12.2 x 6.35 mm). The wide input range is 4.5 to 14 Volts DC. The maximum output current is 3 Amps (T/3 models). Based on fixed-frequency synchronous buck converter switching topology, the high power conver-
OKL-T/3-W12 Series
Programmable Output 3-Amp iLGA SMT PoLs
Typical unit
sion 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. An optional sequence/tracking feature on OKL2 models allows power sequencing of PoL's. These units are designed to meet all standard UL/EN/IEC 60950-1 safety certifications and RoHS-6 hazardous substance compliance.
FEATURES

iLGA inspectable Land Grid Array 4.5-14Vdc input voltage range Programmable output voltage from 0.591-5.5Vdc Drives up to 200 F ceramic capacitive loads High power conversion efficiency at 93% Outstanding thermal derating performance Over temperature and over current protection On/Off control and Power Good signal Optional Sequence/Tracking operation (OKL2 models) Designed to meet UL/EN/IEC 60950-1 safety (pending) RoHS-6 hazardous substance compliance Contents of full data sheet Description, Connection Diagram, Photograph Ordering Guide, Model Numbering, Product Label Mechanical Specifications, Input/Output Pinout Detailed Electrical Specifications Output Voltage Adjustment, Application Notes Soldering Guidelines Performance Data and Oscillograms Tape and Reel Information Page 1 2 3 4 5 7 8 15
Connection 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 Power Good out Figure 1. OKL-T/3 Note: Murata Power Solutions strongly recommends an external input fuse, F1. See specifications.
Sequence/Tracking (OKL2 Models)
For full details go to www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MDC_MDC_OKL-T/3-W12 Series.A05 Page 1 of 4
This data sheet contains core information only. Please click here for the full data sheet.
OKL-T/3-W12 Series
Programmable Output 3-Amp iLGA SMT PoLs
Performance Specifications and Ordering Guide
ORDERING GUIDE Input Package - Pinout P83 Efficiency On/Off Seq/ Regulation (max.) Vin nom. Range Iin, no load Iin, full load Vout Iout (Amps, Power R/N (mV p-p) Case C83 Polarity Track (Volts) max.) (Watts) Max. (Volts) (Volts) (mA) (Amps) Min. Typ. inches (mm) Line Load 0.591-5.5 3 3 3 3 15.0 15.0 15.0 Please contact Murata Power Solutions for further information. OKL2-T/3-W12N-C 0.591-5.5

Output
Model Number
OKL-T/3-W12P-C
37 37
0.25% 0.25% 0.25% 0.25%
12 12
4.5-14 4.5-14
20 20
1.34 1.34
91% 93% 91% 93%
Pos. Neg. Pos. Neg.
no no yes yes
0.48x0.48x0.25 12.2x12.2x6.35 0.48x0.48x0.25 12.2x12.2x6.35 0.48x0.48x0.25 12.2x12.2x6.35 0.48x0.48x0.25 12.2x12.2x6.35
OKL-T/3-W12N-C 0.591-5.5 OKL2-T/3-W12P-C 0.591-5.5
15.0
The output range is limited by Vin. See detailed specs. All specifications are at nominal line voltage, Vout=nominal (5V for W12 models) and full load, +25 deg.C. unless otherwise noted. Output capacitors are 10 F ceramic. 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) and no-load input current are shown at Vout=1V. See specs for details.
PART NUMBER STRUCTURE
OK L 2 - T / 3 - W12 N - C
Okami Non-isolated PoL LGA Surface Mount Sequence/tracking Blank = Not installed 2 = Installed Trimmable Output Voltage Range 0.591-5.5Vdc 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 4.5-14Vdc Maximum Rated Output Current in Amps
Product Label Because of the small size of these products, the product label contains a character-reduced code to indicate the model number and manufacturing date code. Not all items on the label are always used. Please note that the label differs from the product photograph. Here is the layout of the label:
Model Number OKL-T/3-W12N-C OKL-T/3-W12P-C OKL2-T/3-W12N-C OKL2-T/3-W12P-C
Mfg. date code XXXXXX YMDX Rev. Product code Revision level
Product Code L00103 L01103 L20103 L21103
The manufacturing date code is four characters: First character - Last digit of manufacturing year, example 2009 Second character - Month code (1 through 9 and O through D) Third character - Day code (1 through 9 = 1 to 9, 10=O and 11 through 31 = A through Z) Fourth character - Manufacturing information
Figure 2. Label Artwork Layout
The label contains three rows of information: First row - Murata Power Solutions logo Second row - Model number product code (see table) Third row - Manufacturing date code and revision level
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MDC_MDC_OKL-T/3-W12 Series.A05 Page 2 of 4
This data sheet contains core information only. Please click here for the full data sheet.
OKL-T/3-W12 Series
Programmable Output 3-Amp iLGA SMT PoLs
MECHANICAL SPECIFICATIONS
Top View
0.48 (12.19) 0.043 (1.09) NOM. PCB THK
INPUT/OUTPUT CONNECTIONS Pin 1 2 3 4 5 6 7 8 9 10 11 12 Function On/Off Control* VIN Ground VOUT Sense Trim Ground NC Sequence/Tracking Power Good out NC NC
Bottom View
0.48 (12.19)
Side View
NOTE: In case of solder-wicking, this terminal is connected to Vout.
*The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) polarity
OKL2 Models
0.25 (6.35)
End View Recommended Footprint -through the Board0.480 (12.19) 0.135 0.180 (3.43) (4.57) 0.045 (1.14) 2 Vin Vout 0.480 REF (12.19) Gnd Vin On/Off PGood NC Gnd NC Seq 9 12 0.150 (3.81) 7 0.240 (6.10) 8 0.420 (10.67) 0.330 (8.38) 9 Seq NC Gnd 8 7 NC 12
Dimensions are in inches (mm shown for ref. only).
Third Angle Projection
Bottom View
0.060 (1.52) 0.195 (4.95) 0.375 (9.53)
0.070 x 0.160 x3 (1.77 x 4.07) 4
0
4 0.420 (10.67) 0.375 (9.53) 5 11 0.150 (3.81) 6 0.060 (1.52) 0 Trim
3
2
3 Gnd Vout Sense NC C L
0.240 (6.10)
Sense NC
1 10
C L
1 On/Off 0.090 (2.29) 10 PG
0.180 (4.57) 0.135 (3.43) 5 11 6
0.180 (4.57)
Trim
0.090 (2.29) 0.180 0.090 (4.57) (2.29) 0.040 x 0.040 x9 (1.01 x 1.01)
Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 1
Figure 3. OKL-T/3 Mechanical Outline
Components are shown for reference only.
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MDC_MDC_OKL-T/3-W12 Series.A05 Page 3 of 4
This data sheet contains core information only. Please click here for the full data sheet.
OKL-T/3-W12 Series
Programmable Output 3-Amp iLGA SMT PoLs
USA: Canada: UK: France: Germany: Japan: China: Singapore:
Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Munchen, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com Tokyo, Tel: 81-3-3779-1031, email: japan@murata-ps.com Kyoto, Tel: 81-75-955-7269, email: japan@murata-ps.com Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 and 14001 REGISTERED
07/31/09
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
MDC_MDC_OKL-T/3-W12 Series.A05 Page 4 of 4

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