OKL-T/3-W5 [MURATA]
Programmable Output 3-Amp iLGA SMT PoLs; 可编程输出3安培ILGA SMT政客
| 型号： | OKL-T/3-W5 |
| 厂家： | 
muRata |
| 描述： | Programmable Output 3-Amp iLGA SMT PoLs |
| 文件： | 总15页 (文件大小：1634K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
OKL-T/3-W5 Series
s
Programmable Output 3-Amp iLGA SMT PoLs
PRODUCT OVERVIEW
The OKL-T/3-W5 series are miniature non-iso-
lated Point-of-Load (PoL) DC/DC power converters
for embedded applications. The tiny form factor is
configured on a Land Grid Array (LGA) assembly
measuring 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 2.4 to 5.5 Volts DC.
The maximum output current is 3 Amps. 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, over-
current and over temperature protections.
An optional sequence/tracking feature allows
power sequencing of PoL’s. These units meet all
standard UL/EN/IEC 60950-1 safety certifications
(2nd Edition) and RoHS-6 hazardous substance
compliance.
Typical unit
FEATURES
■ iLGA inspectable Land Grid Array
■ 2.4-5.5Vdc input voltage range
Contents
Page
■ Programmable output voltage from 0.6-3.63Vdc
■ Drives 200 μF ceramic capacitive loads
■ High power conversion efficiency at 95.3%
■ Outstanding thermal derating performance
■ Over temperature and over current protection
■ On/Off control
Description, Connection Diagram, Photograph
Ordering Guide, Model Numbering, Product Label
1
2
3
4
5
8
15
Mechanical Specifications, Input/Output Pinout
Detailed Electrical Specifications
Output Voltage Adjustment, Application Notes
Performance Data and Oscillograms
Tape and Reel Information
■ Meets UL/EN/IEC 60950-1 safety, 2nd Edition
■ RoHS-6 hazardous substance compliance
■ Sequence/Tracking operation (optional)
Connection Diagram
+Vin
+Vout
Sense
tꢀ4XJUDIJOH
tꢀ'JMUFST
F1
On/Off
Control
Controller
tꢀ$VSSFOUꢀ4FOTF
External
DC
Trim
Power
Source
Reference and
Error Amplifier
Open = On
Closed = Off
(Positive
On/Off)
Common
Common
Sequence/Tracking
(OKL2 Models)
Figure 1. OKL-T/3-W5
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
email: sales@murata-ps.com
12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 1 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
Performance Specifications and Ordering Guide
ORDERING GUIDE
Output
Input
Package - Pinout P83
Efficiency
Model Number
Regulation (max.)
Vin nom. Range Iin, no load Iin, full load
Vout Iout (Amps, Power R/N (mV p-p)
Case C83
(Volts) ➀
max.)
(Watts)
Max. ➃
(Volts) (Volts) (mA) ➃ (Amps) ➁
inches (mm)
Line
Load
Min. Typ.
0.48x0.48x0.244 max
(12.2x12.2x6.2) max
OKL-T/3-W5P-C
OKL-T/3-W5N-C
0.6-3.63
3
9.9
25
0.25% 0.25%
0.25% 0.25%
0.25% 0.25%
0.25% 0.25%
5
5
5
5
2.4-5.5
2.4-5.5
2.4-5.5
2.4-5.5
25
25
25
25
2.08
2.08
2.08
2.08
93.3% 95.3% Pos.
no
0.48x0.48x0.244 max
(12.2x12.2x6.2) max
0.6-3.63
3
3
3
9.9
9.9
9.9
25
25
25
93.3% 95.3% Neg. no
93.3% 95.3% Pos. yes
93.3% 95.3% Neg. yes
0.48x0.48x0.244 max
(12.2x12.2x6.2) max
OKL2-T/3-W5P-C 0.6-3.63
OKL2-T/3-W5N-C 0.6-3.63
0.48x0.48x0.244 max
(12.2x12.2x6.2) max
➀
➁
The output range is limited by Vin. See detailed specs.
➂
Use adequate ground plane and copper thickness adjacent to the converter.
All specifications are at nominal line voltage, Vout=nominal (3.3V) and full load, +25 deg.C.
unless otherwise noted.
ꢀꢁRipple and Noise (R/N) and no-load input current are shown at Vout=1V. See specs for details.
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.
PART NUMBER STRUCTURE
OK L 2 - T / 3 - W5 N - C
Okami Non-isolated PoL
LGA Surface Mount
RoHS Hazardous
Substance Compliance
C = RoHS-6 (does not claim EU RoHS exemption
7b–lead in solder)
Sequence/tracking
Blank = Not installed
2 = Installed
On/Off Polarity
P = Positive Polarity
N = Negative Polarity
Trimmable Output
Voltage Range
0.6-3.63Vdc
Input Voltage Range
2.4-5.5Vdc
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-W5P-C
OKL-T/3-W5N-C
OKL2-T/3-W5P-C
OKL2-T/3-W5N-C
Product Code
L01003
L00003
L21003
L20003
XXXXXX
Product code
Revision level
Mfg.
date
code
YMDX Rev.
The manufacturing date code is four characters:
Figure 2. Label Artwork Layout
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)
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
Fourth character – Manufacturing information
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 2 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
MECHANICAL SPECIFICATIONS
Top View
INPUT/OUTPUT CONNECTIONS
0.48
(12.19)
Pin
1
2
Function
On/Off Control*
Bottom View
VIN
3
Ground
4
VOUT
5
Sense
6
7
8
Trim
Ground
NC
0.48
(12.19)
9
Sequence/Tracking
10
11
12
NC
NC
NC
Side View
*The Remote On/Off can be provided with
either positive (P suffix) or negative (N
suffix) polarity
0.244
(6.2)
max.
End View
Recommended Footprint
-through the Board-
Bottom View
0.480 (12.19)
0.135
(3.43)
0.180
(4.57)
0.045
(1.14)
0.070 x 0.160 x3
(1.77 x 4.07)
4
3
2
2
3
4
Vin
Gnd
0.420 (10.67)
0.375 (9.53)
Gnd
Vin
0.180 (4.57)
0.180 (4.57)
C
L
0.135 (3.43)
5
On/Off
Sense
NC
5
11
6
1
Sense
On/Off
C
L
0.240 (6.10)
0.150 (3.81)
1
0.090
(2.29)
10
NC
NC
11
6
10
9
Seq
Trim
Gnd
NC
0.060 (1.52)
0
9
Seq NC Gnd NC
Trim
8
7
12
12
7
8
Dimensions are in inches (mm shown for ref. only).
0.090
(2.29)
Third Angle Projection
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 1ꢀ
Components are shown for reference only.
Figure 3. OKL-T/3-W5 Mechanical Outline
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 3 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
6 mSec for Vout=nominal (Remote On/Off)
600 KHz
(Vin on or On/Off to Vout regulated)
Switching Frequency
Performance and Functional Specifications
See Note 1
Input
Environmental
Input Voltage Range
Isolation
See Ordering Guide and Note 7.
Calculated MTBF (hours)
Telecordia method (4a)
OKL Models
10,820,000
OKL2 Models
5,229
Not isolated
2.05 V
,000
Start-Up Voltage
(hours)
Calculated MTBF
MIL-HDBK-217N2 method (4b)
5,999,000
5,176,000
Undervoltage Shutdown (see Note 15)
Overvoltage Shutdown
1.92 V
Operating Temperature Range (Ambient, all output ranges)
None
See derating curves
Storage Temperature Range
Thermal Protection/Shutdown
Relative Humidity
-40 to +85 ꢀC. with derating (Note 9)
Reflected (Back) Ripple Current (Note 2) TBD mA pk-pk
-55 to +125 deg. C.
Internal Input Filter Type
Capacitive
Included in PWM
Recommended External Fuse
Reverse Polarity Protection
TBD
To 85%/+85 ꢀC., non-condensing
None. See fuse information.
Input Current:
Physical
Full Load Conditions
Inrush Transient
Shutdown Mode (Off, UV, OT)
Output in Short Circuit
Low Line (Vin=Vmin)
See Ordering Guide
TBD
1 mA
10 mA
1.48 A.
Outline Dimensions
Weight
See Mechanical Specifications
0.06 ounces (1.6 grams)
A2Sec.
Safety
Meets UL/cUL 60950-1, CSA-
C22.2 No. 60950-1, IEC/EN 60950-1,
2nd Edition
Remote On/Off Control (Note 5)
Negative Logic
Restriction of Hazardous Substances
7b–lead in solder)
RoHS-6 (does not claim EU RoHS exemption
ON = Open pin or -0.2V to Vin -1.6V max.
OFF = Vin -0.8V min. to +Vin
ON = Open pin (internally pulled up) or
+1.2V to +Vin max.
OFF = -0.3V to +0.3V max. or ground
TBD
Positive Logic
Absolute Maximum Ratings
Input Voltage (Continuous or transient)
On/Off Control
0 V. to +6 Volts max.
0 V. min. to +Vin max.
Current
Input Reverse Polarity Protection
Output Current (Note 7)
See Fuse section
Tracking/Sequencing (optional)
Slew Rate
Tracking accuracy, rising input
Tracking accuracy, falling input
Current-limited. Devices can withstand a
sustained short circuit without damage.
The outputs are not intended to accept
appreciable reverse current.
2 Volts per millisecond, max.
Vout = 100 mV of Sequence In
Vout = 100 mV of Sequence In
Output
Storage Temperature
Lead Temperature
-55 to +125 ꢀC.
Output Power
9.9W max.
See soldering specifications
Output Voltage Range
See Ordering Guide
No minimum load
2.5 % of Vnominal
See Ordering Guide
None
Absolute maximums are stress ratings. Exposure of devices to greater than any of
any of these conditions may adversely affect long-term reliability. Proper operation
under conditions other than those listed in the Performance/Functional Specifications
Table is not implied nor recommended.
Minimum Loading
Accuracy (50% load, untrimmed)
Voltage Output Range (Note 13)
Overvoltage Protection (Note 16)
Temperature Coefficient
Ripple/Noise (20 MHz bandwidth)
Line/Load Regulation
Specification Notes:
(1) Specifications are typical at +25 °C, Vin=nominal (+5V), Vout=nominal (+3.3V), full load, external caps and
natural convection unless otherwise indicated. Extended tests at full power must supply substantial forced
airflow.
TBD
See Ordering Guide and note 8
See Ordering Guide and note 10
See Ordering Guide
All models are tested and specified with external 10ꢁF ceramic output capacitors and a 22 ꢁF external
input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate our test
equipment and may not be required to achieve specified performance in your applications. However, Murata
Power Solutions recommends installation of these capacitors. All models are stable and regulate within
spec under no-load conditions.
Efficiency
Maximum Capacitive Loading (Note 14)
Cap-ESR=0.001 to 0.01 Ohms
Cap-ESR >0.01 Ohms
200 ꢁF
TBD
(2) Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=2 x
100 ꢁF ceramic, Cbus=1000 ꢁF electrolytic, Lbus=1 ꢁH.
Current Limit Inception (Note 6)
(3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher
temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if the total
RMS current over time does not exceed the Derating curve.
(98% of Vout setting, after warm up) 8 Amps
Short Circuit Mode
Short Circuit Current Output
Protection Method
10 mA
(4a) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground fixed
conditions, Tpcboard=+25 ꢀC, full output load, natural air convection.
Hiccup autorecovery upon overload
removal. (Note 17)
(4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground benign, +25ºC., full
output load, natural convection.
Short Circuit Duration
Prebias Startup
Continuous, no damage
(output shorted to ground)
Converter will start up if the external
output voltage is less than Vnominal.
(5) The On/Off Control Input should use either a switch or an open collector/open drain transistor referenced
to -Input Common. A logic gate may also be used by applying appropriate external voltages which do not
exceed +Vin.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected
setting.
Dynamic Characteristics
Dynamic Load Response
50ꢁSec max. to within 2% of final value
(50-100% load step, di/dt=1A/ꢁSec) (Note 1)
Peak Deviation
250 mV
Start-Up Time
6 mSec for Vout=nominal (Vin On)
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 4 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
APPLICATION NOTES
Specification Notes, Cont.:
(7) Please observe the voltage input and output specifications in the Voltage Range Graph on page 7.
Input Fusing
(8) Output noise may be further reduced by adding an external filter. At zero output current, the output may
contain low frequency components which exceed the ripple specification. The output may be operated
indefinitely with no load.
Certain applications and/or safety agencies may require fuses at the inputs
of power conversion components. Fuses should also be used when there
is the possibility of sustained input voltage reversal which is not current-
limited. For greatest safety, we recommend a fast blow fuse installed in the
ungrounded input supply line.
(9) All models are fully operational and meet published specifications, including “cold start” at –40ꢀ C.
(10) Regulation specifications describe the deviation as the line input voltage or output load current is varied
from a nominal midpoint value to either extreme.
(11) Other input or output voltage ranges will be reviewed under scheduled quantity special order.
(12) Maximum PC board temperature is measured with the sensor in the center of the converter.
(13) Do not exceed maximum power specifications when adjusting the output trim.
The installer must observe all relevant safety standards and regulations.
For safety agency approvals, install the converter in compliance with the
end-user safety standard, i.e. IEC/EN/UL 60950-1.
(14) The maximum output capacitive loads depend on the the Equivalent Series Resistance (ESR) of the external
output capacitor and, to a lesser extent, the distance and series impedance to the load. Larger caps will
reduce output noise but may change the transient response. Newer ceramic caps with very low ESR may
require lower capacitor values to avoid instability. Thoroughly test your capacitors in the application. Please
refer to the Output Capacitive Load Application Note.
Input Under-Voltage Shutdown and Start-Up Threshold
(15) Do not allow the input voltage to degrade lower than the input undervoltage shutdown voltage at all times.
Otherwise, you risk having the converter turn off. The undervoltage shutdown is not latching and will
attempt to recover when the input is brought back into normal operating range.
Under normal start-up conditions, converters will not begin to regulate
properly until the ramping-up input voltage exceeds and remains at the
Start-Up Threshold Voltage (see Specifications). Once operating, convert-
ers will not turn off until the input voltage drops below the Under-Voltage
Shutdown Limit. Subsequent restart will not occur until the input voltage
rises again above the Start-Up Threshold. This built-in hysteresis prevents
any unstable on/off operation at a single input voltage.
(16) The outputs are not intended to sink appreciable reverse current.
(17) “Hiccup” overcurrent operation repeatedly attempts to restart the converter with a brief, full-current output.
If the overcurrent condition still exists, the restart current will be removed and then tried again. This short
current pulse prevents overheating and damaging the converter. Once the fault is removed, the converter
immediately recovers normal operation.
Output Voltage Adustment
The output voltage may be adjusted over a limited range by connecting an
external trim resistor (Rtrim) between the Trim pin and Ground. The Rtrim
resistor must be a 1/10 Watt precision metal film type, 0.5% accuracy or
better with low temperature coefficient, 100 ppm/oC. or better. Mount the
resistor close to the converter with very short leads or use a surface mount
trim resistor.
Users should be aware however of input sources near the Under-Voltage
Shutdown whose voltage decays as input current is consumed (such as
capacitor inputs), the converter shuts off and then restarts as the external
capacitor recharges. Such situations could oscillate. To prevent this, make
sure the operating input voltage is well above the UV Shutdown voltage AT
ALL TIMES.
In the tables below, the calculated resistance is given. Do not exceed the
specified limits of the output voltage or the converter’s maximum power
rating when applying these resistors. Also, avoid high noise at the Trim
input. However, to prevent instability, you should never connect any capaci-
tors to Trim.
Start-Up Time
Assuming that the output current is set at the rated maximum, the Vin to
Vout Start-Up Time (see Specifications) is the time interval between the
point when the ramping input voltage crosses the Start-Up Threshold and
the fully loaded regulated output voltage enters and remains within its
specified accuracy band. Actual measured times will vary with input source
impedance, external input capacitance, input voltage slew rate and final
value of the input voltage as it appears at the converter.
OKL-T/3-W5
Output Voltage
3.3 V.
Calculated Rtrim (KΩ)
0.44
0.63
0.86
1.0
These converters include a soft start circuit to moderate the duty cycle of
its PWM controller at power up, thereby limiting the input inrush current.
2.5 V.
2.0 V.
The On/Off Remote Control interval from On command to Vout regulated
assumes that the converter already has its input voltage stabilized above
the Start-Up Threshold before the On command. The interval is measured
from the On command until the output enters and remains within its
specified accuracy band. The specification assumes that the output is fully
loaded at maximum rated current. Similar conditions apply to the On to Vout
regulated specification such as external load capacitance and soft start
circuitry.
1.8 V.
1.5 V.
1.33
2.0
1.2 V.
1.0 V.
3.0
0.6 V.
∞ (open)
Resistor Trim Equation, OKL-T/3-W5 models:
Recommended Input Filtering
1.2
VOUT – 0.6
_____________
The user must assure that the input source has low AC impedance to
provide dynamic stability and that the input supply has little or no inductive
content, including long distributed wiring to a remote power supply. The
converter will operate with no additional external capacitance if these
conditions are met.
RTRIM (kꢀ) =
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 5 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
For best performance, we recommend installing a low-ESR capacitor
immediately adjacent to the converter’s input terminals. The capacitor
should be a ceramic type such as the Murata GRM32 series or a polymer
type. Initial suggested capacitor values are 10 to 22 μF, rated at twice the
expected maximum input voltage. Make sure that the input terminals do
not go below the undervoltage shutdown voltage at all times. More input
bulk capacitance may be added in parallel (either electrolytic or tantalum)
if needed.
COPPER STRIP
+OUTPUT
RLOAD
SCOPE
C1
C2
Recommended Output Filtering
-OUTPUT
The converter will achieve its rated output ripple and noise with no
additional external capacitor. However, the user may install more exter-
nal output capacitance to reduce the ripple even further or for improved
dynamic response. Again, use low-ESR ceramic (Murata GRM32 series)
or polymer capacitors. Initial values of 10 to 47 μF may be tried, either
single or multiple capacitors in parallel. Mount these close to the converter.
Measure the output ripple under your load conditions.
COPPER STRIP
C1 = 1μF CERAMIC
C2 = 10μF CERAMIC
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 5: Measuring Output Ripple and Noise (PARD)
Use only as much capacitance as required to achieve your ripple and
noise objectives. Excessive capacitance can make step load recovery
sluggish or possibly introduce instability. Do not exceed the maximum rated
output capacitance listed in the specifications.
Thermal Shutdown
To prevent many over temperature problems and damage, these converters
include thermal shutdown circuitry. If environmental conditions cause the
temperature of the DC/DC’s to rise above the Operating Temperature Range
up to the shutdown temperature, an on-board electronic temperature
sensor will power down the unit. When the temperature decreases below
the turn-on threshold, the converter will automatically restart. There is a
small amount of hysteresis to prevent rapid on/off cycling.
Input Ripple Current and Output Noise
All models in this converter series are tested and specified for input
reflected ripple current and output noise using designated external input/
output components, circuits and layout as shown in the figures below. The
Cbus and Lbus components simulate a typical DC voltage bus. Please note
that the values of Cin, Lbus and Cbus will vary according to the specific
converter model.
CAUTION: If you operate too close to the thermal limits, the converter
may shut down suddenly without warning. Be sure to thoroughly test your
application to avoid unplanned thermal shutdown.
TO
Temperature Derating Curves
CURRENT
PROBE
OSCILLOSCOPE
The graphs in the next section illustrate typical operation under a variety of
conditions. The Derating curves show the maximum continuous ambient air
temperature and decreasing maximum output current which is accept-
able under increasing forced airflow measured in Linear Feet per Minute
(“LFM”). Note that these are AVERAGE measurements. The converter will
accept brief increases in current or reduced airflow as long as the average
is not exceeded.
+INPUT
-INPUT
LBUS
+
–
+
–
V
IN
CBUS
CIN
Note that the temperatures are of the ambient airflow, not the converter
itself which is obviously running at higher temperature than the outside
air. Also note that very low flow rates (below about 25 LFM) are similar to
“natural convection”, that is, not using fan-forced airflow.
C
IN = 2 x 100μF, ESR < 700mΩ @ 100kHz
BUS = 1000μF, ESR < 100mΩ @ 100kHz
C
LBUS = 1μH
Figure 4: Measuring Input Ripple Current
Murata Power Solutions makes Characterization measurements in a
closed cycle wind tunnel with calibrated airflow. We use both thermocou-
ples and an infrared camera system to observe thermal performance.
In figure 5, the two copper strips simulate real-world printed circuit
impedances between the power supply and its load. In order to minimize
circuit errors and standardize tests between units, scope measurements
should be made using BNC connectors or the probe ground should not
exceed one half inch and soldered directly to the test circuit.
Minimum Output Loading Requirements
All models regulate within specification and are stable under no load to full
load conditions. Operation under no load might however slightly increase
output ripple and noise.
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 6 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
Output Current Limiting
Voltage Range Graph
Current limiting inception is defined as the point at which full power falls
below the rated tolerance. See the Performance/Functional Specifica-
tions. Note particularly that the output current may briefly rise above its
rated value in normal operation as long as the average output power is
not exceeded. This enhances reliability and continued operation of your
application. If the output current is too high, the converter will enter the
short circuit condition.
Please observe the limits below for voltage input and output ranges. These
limits apply at all output currents.
6
5
4
Vin=2.4V / Vout=1.8V
3
Output Short Circuit Condition
When a converter is in current-limit mode, the output voltage will drop
as the output current demand increases. If the output voltage drops too
low (approximately 98% of nominal output voltage for most models), the
magnetically coupled voltage used to develop primary side voltages will
also drop, thereby shutting down the PWM controller. Following a time-out
period, the PWM will restart, causing the output voltage to begin ramping
up to its appropriate value. If the short-circuit condition persists, another
shutdown cycle will initiate. This rapid on/off cycling is called “hiccup
mode”. The hiccup cycling reduces the average output current, thereby
preventing excessive internal temperatures and/or component damage. A
short circuit can be tolerated indefinitely.
2
1
0
Upper Limit
Lower Limit
0.5
1
1.5
2
2.5
3
3.5
Output Voltage (V)
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these
converters. These specifications vary depending on the solder type. Exceeding these
specifications may cause damage to the product. Your production environment
may differ therefore please thoroughly review these guidelines with your process
The “hiccup” system differs from older latching short circuit systems
because you do not have to power down the converter to make it restart.
The system will automatically restore operation as soon as the short circuit
condition is removed.
engineers.
Reflow Solder Operations for surface-mount products (SMT)
For Sn/Ag/Cu based solders:
Remote On/Off Control
Preheat Temperature
Time over Liquidus
Less than 1 ºC. per second
45 to 75 seconds
The remote On/Off Control can be ordered with either polarity. Please refer
to the Connection Diagram on page 1 for On/Off connections.
Maximum Peak Temperature
Cooling Rate
260 ºC.
Positive polarity models are enabled when the On/Off pin is left open or
is pulled high to +Vin with respect to –Vin. An internal bias current causes
the open pin to rise to +Vin. Positive-polarity devices are disabled when the
On/Off is grounded or brought to within a low voltage (see Specifications)
with respect to –Vin.
Less than 3 ºC. per second
For Sn/Pb based solders:
Preheat Temperature
Time over Liquidus
Less than 1 ºC. per second
60 to 75 seconds
Negative polarity devices are on (enabled) when the On/Off is open or
brought to within a low voltage (see Specifications) with respect to –Vin.
The device is off (disabled) when the On/Off is pulled high with respect to
–Vin (see specifications).
Maximum Peak Temperature
Cooling Rate
235 ºC.
Less than 3 ºC. per second
Recommended Lead-free Solder Reflow Profile
Dynamic control of the On/Off function should be able to sink appropriate
signal current when brought low and withstand appropriate voltage when
brought high. Be aware too that there is a finite time in milliseconds (see
Specifications) between the time of On/Off Control activation and stable,
regulated output. This time will vary slightly with output load type and cur-
rent and input conditions.
Peak Temp.
235-260° C
250
200
Reflow Zone
150
100
50
Soaking Zone
120 sec max
time above 217° C
45-75 sec
Output Capacitive Load
These converters do not require external capacitance added to achieve
rated specifications. Users should only consider adding capacitance to
reduce switching noise and/or to handle spike current load steps. Install
only enough capacitance to achieve noise objectives. Excess external
capacitance may cause regulation problems, degraded transient response
and possible oscillation or instability.
<1.5° C/sec
Preheating Zone
240 sec max
0
0
30
60
90
120
150
Time (sec)
180
210
240
270
300
High trace = normal upper limit
Low trace - normal lower limit
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 7 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
PERFORMANCE DATA AND OSCILLOGRAMS
Efficiency vs. Line Voltage and Load Current @ +25ꢀC. (Vout = 3.3V)
Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=3.3V)
100
3.25
3
65 LFM
2.75
95
2.5
2.25
2
VIN = 4V
VIN = 5V
VIN = 5.5V
90
1.75
1.5
1.25
1
85
0.5
1.0
1.5
2.0
2.5
3.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Load Current (Amps)
Ambient Temperature (ºC)
Output Ripple and Noise (Vin=5V, Vout=3.3V, Iout=3A, Cload=0, ScopeBW=20MHz)
On/Off Enable Delay (Vin=5V, Vout=3.3V, Iout=3A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Step Load Transient Response (Vin=5V, Vout=3.3V, Cload=0, Iout=1.5A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
Step Load Transient Response (Vin=5V, Vout=3.3V, Cload=0, Iout=3A to 1.5A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 8 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
PERFORMANCE DATA AND OSCILLOGRAMS
Efficiency vs. Line Voltage and Load Current @ +25ꢀC. (Vout = 2.5V)
Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=2.5V)
100
3.25
3
65 LFM
2.75
95
2.5
2.25
2
VIN = 4V
VIN = 5V
90
85
VIN = 5.5V
1.75
1.5
1.25
1
0.5
1.0
1.5
2.0
2.5
3.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Load Current (Amps)
Ambient Temperature (ºC)
Output Ripple and Noise (Vin=5V, Vout=2.5V, Iout=3A, Cload=0, ScopeBW=20MHz)
On/Off Enable Delay (Vin=5V, Vout=2.5V, Iout=3A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Step Load Transient Response (Vin=5V, Vout=2.5V, Cload=0, Iout=1.5A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
Step Load Transient Response (Vin=5V, Vout=2.5V, Cload=0, Iout=3A to 1.5A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 9 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
PERFORMANCE DATA AND OSCILLOGRAMS
Efficiency vs. Line Voltage and Load Current @ +25ꢀC. (Vout = 1.8V)
Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=1.8V)
100
3.25
3
65 LFM
2.75
95
2.5
2.25
2
90
VIN = 4V
VIN = 5V
VIN = 5.5V
1.75
1.5
1.25
1
85
80
0.5
1.0
1.5
2.0
2.5
3.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Load Current (Amps)
Ambient Temperature (ºC)
Output Ripple and Noise (Vin=5V, Vout=1.8V, Iout=3A, Cload=0, ScopeBW=20MHz)
On/Off Enable Delay (Vin=5V, Vout=1.8V, Iout=6A, Cload=0)
Trace 4=Enable, Trace2=Vout
Step Load Transient Response (Vin=5V, Vout=1.8V, Cload=0, Iout=1.5A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
Step Load Transient Response (Vin=5V, Vout=1.8V, Cload=0, Iout=3A to 1.5A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 10 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
PERFORMANCE DATA AND OSCILLOGRAMS
Efficiency vs. Line Voltage and Load Current @ +25ꢀC. (Vout = 1.5V)
Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=1.5V)
100
3.25
3
65 LFM
2.75
95
2.5
2.25
2
90
VIN = 4V
VIN = 5V
1.75
1.5
1.25
1
VIN = 5.5V
85
80
0.5
1.0
1.5
2.0
2.5
3.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Load Current (Amps)
Ambient Temperature (ºC)
Output Ripple and Noise (Vin=5V, Vout=1.5V, Iout=3A, Cload=0, ScopeBW=20MHz)
On/Off Enable Delay (Vin=5V, Vout=1.5V, Iout=3A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Step Load Transient Response (Vin=5V, Vout=1.5V, Cload=0, Iout=1.5A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
Step Load Transient Response (Vin=5V, Vout=1.5V, Cload=0, Iout=3A to 1.5A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 11 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
PERFORMANCE DATA AND OSCILLOGRAMS
Efficiency vs. Line Voltage and Load Current @ +25ꢀC. (Vout = 1.2V)
Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=1.2V)
100
3.25
3
65 LFM
2.75
95
2.5
2.25
2
90
VIN = 4V
1.75
1.5
1.25
1
VIN = 5V
VIN = 5.5V
85
80
0.5
1.0
1.5
2.0
2.5
3.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Load Current (Amps)
Ambient Temperature (ºC)
Output Ripple and Noise (Vin=5V, Vout=1.2V, Iout=3A, Cload=0, ScopeBW=20MHz)
On/Off Enable Delay (Vin=5V, Vout=1.2V, Iout=3A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Step Load Transient Response (Vin=5V, Vout=1.2V, Cload=0, Iout=1.5A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
Step Load Transient Response (Vin=5V, Vout=1.2V, Cload=0, Iout=3A to 1.5A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 12 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
PERFORMANCE DATA AND OSCILLOGRAMS
Efficiency vs. Line Voltage and Load Current @ +25ꢀC. (Vout = 1.0V)
Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=1.0V)
100
3.25
3
65 LFM
95
90
85
2.75
2.5
2.25
2
V
V
V
IN = 4V
IN = 5V
IN = 5.5V
1.75
1.5
1.25
1
80
75
0.5
1.0
1.5
2.0
2.5
3.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Load Current (Amps)
Ambient Temperature (ºC)
Output Ripple and Noise (Vin=5V, Vout=1.0V, Iout=3A, Cload=0, ScopeBW=20MHz)
On/Off Enable Delay (Vin=5V, Vout=1.0V, Iout=3A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Step Load Transient Response (Vin=5V, Vout=1.0V, Cload=0, Iout=1.5A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
Step Load Transient Response (Vin=5V, Vout=1.0V, Cload=0, Iout=3A to 1.5A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 13 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
PERFORMANCE DATA AND OSCILLOGRAMS
Efficiency vs. Line Voltage and Load Current @ +25ꢀC. (Vout = 0.6V)
Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=0.6V)
100
3.25
3
95
90
85
65 LFM
2.75
2.5
2.25
2
80
VIN = 4V
1.75
1.5
1.25
1
VIN = 5V
VIN = 5.5V
75
70
65
0.5
1.0
1.5
2.0
2.5
3.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Load Current (Amps)
Ambient Temperature (ºC)
Output Ripple and Noise (Vin=5V, Vout=0.6V, Iout=3A, Cload=0, ScopeBW=20MHz)
On/Off Enable Delay (Vin=5V, Vout=0.6V, Iout=3A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Step Load Transient Response (Vin=5V, Vout=0.6V, Cload=0, Iout=1.5A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
Step Load Transient Response (Vin=5V, Vout=0.6V, Cload=0, Iout=3A to 1.5A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div.
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 14 of 15
OKL-T/3-W5 Series
Programmable Output 3-Amp iLGA SMT PoLs
TAPE AND REEL INFORMATION
Tape Detail
7.40 0.1
Round
Sprocket
Holes
2.00 0.1
4.00 0.1
0.40 0.05
+0.1
ø1.50
-0
16.00 0.1
B’
B
A
Vacuum Pickup
Point in Center
A’
Pulling direction
12.60 0.1
(7.0º)
Notes
1) The radius (R) is 0.3mm max.
2) Cumulative tolerance of 10 pitches of the sprocket hole is 0.2mm.
A-A’ SECTION
Reel Detail
Reel diameter 330.2
Start of
pocket tape
A
End of modules
C
B
Start of
Start of
modules
cover tape
in pockets
Hub diameter 13.00
Inner diameter 101.6
All dimensions are in millimeters.
Reel Information (400 units per reel)
Key
A
Description
Length (mm)
800 40
Tape trailer (no modules)
B
Pocket tape length before modules
Cover tape length before pocket tape
200 min.
C
240 40
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12 May 2010 MDC_OKL-T/3-W5 Series.A03 Page 15 of 15
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