OKLT3W12NCS PoLs Datasheet 

Part Number  OKLT3W12NCS 
Description  Programmable Output 3Amp iLGA SMT PoLs 
Manufacture  Murata 
Total Page  17 Pages 
Datasheet 
www.murataps.com
OKLT/3W12 Series
Programmable Output 3Amp iLGA SMT PoLs
Typical unit
FEATURES
iLGA inspectable Land Grid Array
4.514Vdc input voltage range
Programmable output voltage from 0.5915.5Vdc
Drives up to 200 μF ceramic capacitive loads
High power conversion efﬁciency at 93%
Outstanding thermal derating performance
Short circuit and over current protection
On/Off control and Power Good signal
Optional Sequence/Tracking operation
(OKL2T/3W12 models)
Certiﬁed to UL/EN/IEC 609501 safety, 2nd Edition
RoHS6 hazardous substance compliance
PRODUCT OVERVIEW
The OKLT/3W12 series are miniature
nonisolated PointofLoad (PoL) DC/DC power
converters for embedded applications. Featuring
inspectable Land Grid Array (iLGA) format, the
OKLT/3W12 measures only 0.48 x 0.48 x 0.244
inches max. (12.2 x 12.2 x 6.2 mm max.).
The wide input range is 4.5 to 14 Volts DC.
The maximum output current is 3 Amps. Based
on ﬁxedfrequency 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, and
overcurrent protections.
An optional sequence/tracking feature on
OKL2T/3W12 models allows power sequencing of
PoL’s. These units are certiﬁed to all standard UL/EN/
IEC 609501 safety certiﬁcations (2nd Edition) and
RoHS6 hazardous substance compliance.
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
Sequence/Tracking
(OKL2 Models)
Power Good
Figure 1. OKLT/3W12
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speciﬁcations.
+Vout
Sense
Trim
Common
For full details go to
www.murataps.com/rohs
www.murataps.com/support
MDC_OKLT/3W12 Series.C01 Page 1 of 17

OKLT/3W12 Series
Programmable Output 3Amp iLGA SMT PoLs
Performance Speciﬁcations and Ordering Guide
ORDERING GUIDE
Model Number
Output
Input Package  Pinout P83
Vout
Iout (Amps, Power
R/N (mV pp) Regulation (max.) Vin nom. Range Iin, no load Iin, full load
Efﬁciency
On/Off Seq/
Logic Track
Case C83
(Volts) ➀ max.) (Watts) Max. ➃ Line Load (Volts) (Volts) (mA) ➃ (Amps) ➁ Min. Typ.
inches (mm)
OKLT/3W12PC 0.5915.5 3 15.0 37 ±0.25% ±0.25% 12 4.514 20
1.34
91% 93% Pos.
no
0.48x0.48x0.244 max
12.2x12.2x6.2 max
OKLT/3W12PC/S 0.5915.5 3 15.0 37 ±0.25% ±0.25% 12 4.514 20
1.34
91% 93% Pos.
no
0.48x0.48x0.244 max
12.2x12.2x6.2 max
OKLT/3W12NC 0.5915.5 3 15.0 37 ±0.25% ±0.25% 12 4.514 20
1.34
91% 93% Neg.
no
0.48x0.48x0.244 max
12.2x12.2x6.2 max
OKLT/3W12NC/S 0.5915.5 3 15.0 37 ±0.25% ±0.25% 12 4.514 20
1.34
91% 93% Neg.
no
0.48x0.48x0.244 max
12.2x12.2x6.2 max
OKL2T/3W12PC 0.5915.5 3 15.0 37 ±0.25% ±0.25% 12 4.514 20
1.34
91% 93% Pos.
yes
0.48x0.48x0.244 max
12.2x12.2x6.2 max
OKL2T/3W12NC 0.5915.5 3 15.0 37 ±0.25% ±0.25% 12 4.514 20
1.34
91% 93% Neg.
yes
0.48x0.48x0.244 max
12.2x12.2x6.2 max
➀ The output range is limited by Vin. See detailed specs.
➁ 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 μF ceramic. Input cap is 22 μF. See detailed speciﬁcations.
I/O caps are necessary for our test equipment and may not be needed for your application.
➂ Use adequate ground plane and copper thickness adjacent to the converter.
Ripple and Noise (R/N) and noload input current are shown at Vout=1V. See specs for details.
PART NUMBER STRUCTURE
OK L 2  T / 3  W12 N  C / S
Nonisolated PoL
LGA Surface Mount
Sequence/tracking
Blank = Not installed
2 = Installed
Trimmable Output
Voltage Range
0.5915.5Vdc
Maximum Rated Output
Current in Amps
Packaging
Blank = standard (400 units per reel)
S = small (100 units per reel)
RoHS Hazardous
Substance Compliance
C = RoHS6 (does not claim EU RoHS exemption
7b–lead in solder)
On/Off Logic
P = Positive Logic
N = Negative Logic
Input Voltage Range
4.514Vdc
Product Label
Because of the small size of these products, the product label contains a
characterreduced 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:
The label contains three rows of information:
Model Number
OKLT/3W12PC
OKLT/3W12PC/S
OKLT/3W12NC
OKLT/3W12NC/S
OKL2T/3W12PC
OKL2T/3W12NC
Product Code
L01103
L00103
L21103
L20103
Mfg.
XXXXXX
Product code
date YMDX Rev. Revision level
code
Figure 2. Label Artwork Layout
First row – Murata Power Solutions logo
Second row – Model number product code (see table)
Third row – Manufacturing date code and revision level
www.murataps.com/support
The manufacturing date code is four characters:
First character – Last digit of manufacturing year, example 2009
Second character – Month code (1 through 9 = JanSep;
O, N, D = Oct, Nov, Dec)
Third character – Day code (1 through 9 = 1 to 9, 10 = 0 and
11 through 31 = A through Z)
Fourth character – Manufacturing information
MDC_OKLT/3W12 Series.C01 Page 2 of 17

Features  www.murataps.com OKLT/3W12 Series Pr ogrammable Output 3Amp iLGA SMT PoLs Typical unit FEATURES iLGA inspe ctable Land Grid Array 4.514Vdc input voltage range Programmable output voltage from 0.5915.5Vdc Drives up to 200 μF ceramic capacitive loads High power conversion ef ciency at 93% Outstanding therma l derating performance Short circ uit and over current protection O n/Off control and Power Good signal Optional Sequence/Tracking operation (OKL2T/3W12 models) Certiﬁed to UL/EN/IEC 609501 safety, 2nd Editi on RoHS6 hazardous substance com pliance PRODUCT OVERVIEW The OKLT/3W 12 series are miniature nonisolated Po intofLoad (PoL) DC/DC power converter s for embedded applications. Featuring inspectable Land Grid Array (iLGA) form at, the OKLT/3W12 measures only 0.48 x 0.48 x 0.244 inches max. (12.2 x 12.2 x 6.2 mm max.). The wide input range i s 4.5 to 14 Volts DC. The maximum output current is 3 Amps. Based on ﬁxedfrequency synchronous buck converter s. 
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