OKL-T1-W12 [MURATA]
Programmable Output 1-Amp iLGA SMT PoLs; 可编程输出1安培ILGA SMT政客
| 型号： | OKL-T1-W12 |
| 厂家： | 
muRata |
| 描述： | Programmable Output 1-Amp iLGA SMT PoLs |
| 文件： | 总16页 (文件大小：1103K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
OKL-T/1-W12 Series
s
Programmable Output 1-Amp iLGA SMT PoLs
PRODUCT OVERVIEW
The OKL-T/1-W12 series are non-isolated Point- of Load (PoL) module features programmable
of-Load (PoL) DC/DC power converters for embed-
ded applications. Featuring inspectable Land Grid
Array (iLGA) format, the OKL-T/1-W12 measures
output voltage and On/Off control. These converters
also include under voltage lock out (UVLO), output
short circuit protection, and over-current protec-
only 0.488 x 0.488 x 0.18 inches max. (12.4 x 12.4 tions.
x 4.57 mm max.).
The wide input range is 2.9 to 14 Volts DC. The
These units are designed to meet all standard UL/
EN/IEC 60950-1 safety certifications (2nd Edition) and
maximum output current is 1 Amp. Based on fixed- RoHS-6 hazardous substance compliance.
frequency synchronous buck converter switching
topology, the high power conversion efficient Point
Typical unit
FEATURES
■ iLGA inspectable Land Grid Array
■ 2.9-14Vdc input voltage range
■ Programmable output voltage from 0.9-5.5Vdc
■ Drives up to 200 μF ceramic capacitive loads
■ High power conversion efficiency at 90%
■ Outstanding thermal derating performance
■ Short circuit and over current protection
■ On/Off control
Contents
Page
Description, Connection Diagram, Photograph
Ordering Guide, Product Label
1
2
3
5
6
9
16
Mechanical Specifications, Input/Output Pinout
Detailed Electrical Specifications
Output Voltage Adjustment, Application Notes
Performance Data and Oscillograms
Tape and Reel Information
■ UL/EN/IEC 60950-1 safety (pending)
■ RoHS-6 hazardous substance compliance
Connection Diagram
+Vin
+Vout
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
Figure 1. OKL-T/1-W12
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See specifications.
For full details go to
www.murata-ps.com/rohs
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 1 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
Performance Specifications and Ordering Guide
ORDERING GUIDE
Output
Input
Package - Pinout P83
Efficiency
On/Off
Polarity
Model Number
Regulation (max.)
Vin nom. Range Iin, no load Iin, full load
Vout
Iout (Amps, Power R/N (mV p-p)
Case C83
inches (mm)
(Volts) ➀
max.)
(Watts)
Max. ➃
(Volts) (Volts)
(mA) ➃ (Amps) ➁
Line
Load
Min. Typ.
0.488x0.488x0.18 max
12.4x12.4x4.57 max
OKL-T/1-W12P-C 0.9-5.5
OKL-T/1-W12N-C 0.9-5.5
1
5
10
0.25% 0.25%
0.25% 0.25%
12
12
2.9-14
2.9-14
10
10
0.46
0.46
88.7% 90%
Pos.
0.488x0.488x0.18 max
12.4x12.4x4.57 max
1
5
10
88.7% 90% Neg.
➀
➁
The output range is limited by Vin. (Vin x 0.8) ≥ Vout.
➂
Use adequate ground plane and copper thickness adjacent to the converter.
All specifications are at nominal line voltage, Vout=nominal (5V for W12 models) 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 - T / 1 -W12 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)
On/Off Polarity
P = Positive Polarity
N = Negative Polarity
Trimmable Output
Voltage Range
0.591–5.5Vdc
Input Voltage Range
2.9–14Vdc
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/1-W12P-C
OKL-T/1-W12N-C
Product Code
L01101
L00101
The manufacturing date code is four characters:
XXXXXX
Product code
Revision level
Mfg.
date
code
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)
YMDX Rev.
Figure 2. Label Artwork Layout
Fourth character – Manufacturing information
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
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 2 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
MECHANICAL SPECIFICATIONS
Vacuum pickup
nozzle location
12.4
4.6
0.18
MAX
0.49
5.0
0.20
5.0
0.20
12.4
0.49
Nozzle dia.
4.00
.157 typ.
Top View
Side View
Bottom View
SMT (iLGA Surface Mount Package)
Pinouts and Pin Locations
C
L
3.43
0.135
1.14
0.045
1.78
0.070
TYP
INPUT/OUTPUT CONNECTIONS
Solder Pad
Function
On/Off Control *
Vin
3
2
1
2
Gnd
Vin
12.40
0.488
REF
4
4.06
0.160
TYP
3
4
5
6
7
8
9
10
11
12
Ground
Vout1
No Connection
Trim1
4.57
0.180
3.43
0.135
On/Off
NC
C
L
5
11
6
1
C
L
NC
2.29
0.090
Ground
10
4.57
0.180
Gnd
NC
No Connection
No Connection
No Connection
Ground
Gnd
7
NC
9
Trim1
NC
1.02
0.040
TYP
12
8
No Connection
2.29
2.29
0.090
*The Remote On/Off can be provided with
either positive (P suffix) or negative (N suffix)
polarity.
0.090
C
L
Dimensions are in inches (mm shown for ref. only).
Third Angle Projection
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/1-W12 Mechanical Outline
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 3 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
MECHANICAL SPECIFICATIONS, Continued
Recommended Footprint
(Through the Board)
12.7
0.50
4.57
0.180
3.43
0.070-0.080 [1.78-2.03mm]
0.135
1.14
0.045
x
0.160-0.170 [4.06-4.32mm]
3 PLACES
2
4
3
Vin
Gnd
4.57
0.180
3.43
0.135
On/Off
12.7
0.50
1
NC
5
C
L
2.29
0.090
10
NC
Gnd
4.57
11
0.180
6
Trim1
NC
NC
Gnd
NC
9
8
7
12
0.040-0.050 [1.02-1.27mm]
SQUARE PAD (9 PLS)
2.29
0.090
4.57
0.180
2.29
0.090
C
L
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 4 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
Environmental
Performance and Functional Specifications
See Note 1
Calculated MTBF (hours)
Telecordia method (4a)
(hours)
OKL-T/1-W12
TBC
Input
Calculated MTBF
MIL-HDBK-217N2 method (4b)
Input Voltage Range
Isolation
See Ordering Guide and Note 7.
TBC
Not isolated
2.45 V
Operating Temperature Range (Ambient, vertical mount)
Start-Up Voltage
See derating curves
Storage Temperature Range
Thermal Protection/Shutdown
Relative Humidity
-40 to +85 ꢁC. with derating (Note 9)
Undervoltage Shutdown (see Note 15)
Overvoltage Shutdown
2.4 V
-55 to +125 ꢁC.
None
None
Reflected (Back) Ripple Current (Note 2) 49 mA pk-pk
to 85%/+85 C., non-condensing
ꢁ
Internal Input Filter Type
Capacitive
Physical
Recommended External Fuse
Reverse Polarity Protection
2A
Outline Dimensions
Weight
See Mechanical Specifications
0.024 ounces (0.67 grams)
None, install external fuse
Input Current:
Full Load Conditions
Inrush Transient
Shutdown Mode (Off, UV, OT)
Output in Short Circuit
Low Line (Vin=Vmin)
Safety
Designed to meet UL/cUL 60950-1, CSA-
C22.2 No. 60950-1, IEC/EN 60950-1,
2nd Edition
See Ordering Guide
0.16 A2Sec.
1 mA
5 mA
0.78 A.
Restriction of Hazardous Substances
RoHS-6 (does not claim EU RoHS exemption
7b–lead in solder)
Remote On/Off Control (Note 5)
Negative Logic
Absolute Maximum Ratings
ON = Open pin or -0.2V to +0.3V. max.
OFF = +1.2V min. to +Vin max.
ON = Open pin (internally pulled up) or
+1.2V to +Vin max.
OFF = -0.3V to +0.8V. max. or ground
0.250 mA
Input Voltage (Continuous or transient)
On/Off Control
0 V. to +15 Volts max.
0 V. min. to +Vin max.
Positive Logic
Current
Input Reverse Polarity Protection
Output Current (Note 7)
None, install external fuse
Current-limited. Devices can withstand a
sustained short circuit without damage.
The outputs are not intended to accept
appreciable reverse current.
Output
Output Power
5.15W max.
Storage Temperature
Lead Temperature
-55 to +125 ꢀC.
Output Voltage Range
See Ordering Guide
No minimum load
See soldering specifications
Minimum Loading
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.
Accuracy (50% load, untrimmed)
Voltage Output Range (Note 13)
Overvoltage Protection (Note 16)
Temperature Coefficient
Ripple/Noise (20 MHz bandwidth)
Line/Load Regulation
3 % of Vnominal
See Ordering Guide
None
0.02% per ꢁC of Vout range
See Ordering Guide and note 8
See Ordering Guide and note 10
See Ordering Guide
Specification Notes:
(1) Specifications are typical at +25 ꢁC, Vin=nominal (+12V.), Vout=nominal (+5V), full load, external caps and
natural convection unless otherwise indicated. Extended tests at full power must supply substantial forced
airflow.
Efficiency
All models are tested and specified with external 10ꢂF ceramic output capacitors and a 22 ꢂF 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.
Maximum Capacitive Loading (Note 14)
Cap-ESR=0.001 to 0.01 Ohms
Cap-ESR >0.01 Ohms
200 ꢂF
ꢂF
Min. cap = ꢂF
0
1000
Current Limit Inception (Note 6)
(98% of Vout setting, after warm up) 2.4 Amps
(2) Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=2 x
100 ꢂF ceramic, Cbus=1000 ꢂF electrolytic, Lbus=1 ꢂH.
(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.
Short Circuit Mode
Short Circuit Current Output
Protection Method
10 mA
Hiccup autorecovery upon overload
removal. (Note 17)
Continuous, no damage
(output shorted to ground)
Converter will start up if the external
(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.
Short Circuit Duration
Prebias Startup
(4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground benign, +25ºC., full
output load, natural convection.
(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.
output voltage is less than Vnominal.
Dynamic Characteristics
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected
setting.
Dynamic Load Response
200ꢂSec max. to within 2% of final value
(50-100% load step, di/dt=1A/ꢂSec) (Note 1)
Peak Deviation
150 mV
Start-Up Time
3.4 mSec for Vout=nominal (Vin On)
3.5 mSec for Vout=nominal (Remote On/Off)
(Vin on or On/Off to Vout regulated)
Switching Frequency
800 KHz
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 5 of 16
OKL-T/1-W12 Series
Programmable Output 1-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. Due to the minimum duty cycle of the controller, operation below Vout=1.8V. with
Vin at or above 12V. may cause pulse skipping. This results in higher output ripple which may require
additional external output filtering.
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
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.
(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.
(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.
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.
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/ C. or better. Mount the
ꢁ
resistor close to the converter with very short leads or use a surface mount
trim resistor.
Start-Up Time
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.
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.
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.
OKL-T/1-W12
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.
Output Voltage
5.0 V.
Calculated Rtrim (KΩ)
2.18
3.3 V.
3.721
2.5 V.
5.576
1.8 V.
9.889
1.5 V.
14.793
29.394
85.238
∞ (open)
1.2 V.
Recommended Input Filtering
1.0 V.
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.
0.895 V.
Resistor Trim Equation, OKL-T/1-W12 models:
RTRIM (kꢀ) = 10 ÷ ((Vout ÷ 0.895) –1) where Vout = desired output
voltage
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 6 of 16
OKL-T/1-W12 Series
Programmable Output 1-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.
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.
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.
Temperature Derating Curves
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.
TO
CURRENT
PROBE
OSCILLOSCOPE
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.
+INPUT
-INPUT
LBUS
+
–
+
–
VIN
CBUS
CIN
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.
C
IN = 2 x 100μF, ESR < 700mΩ @ 100kHz
BUS = 1000μF, ESR < 100mΩ @ 100kHz
CAUTION: These graphs are all collected at slightly above Sea Level
altitude. Be sure to reduce the derating for higher density altitude.
C
LBUS = 1μH
Figure 4: Measuring Input Ripple Current
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.
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 7 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
Output Current Limiting
Soldering Guidelines
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.
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
engineers.
Reflow Solder Operations for surface-mount products (SMT)
For Sn/Ag/Cu based solders:
Output Short Circuit Condition
Preheat Temperature
Time over Liquidus
Less than 1 ºC. per second
45 to 75 seconds
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.
Maximum Peak Temperature
Cooling Rate
260 ºC.
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
Maximum Peak Temperature
Cooling Rate
235 ºC.
Less than 3 ºC. per second
Recommended Lead-free Solder Reflow Profile
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.
Peak Temp.
235-260° C
250
200
Remote On/Off Control
Reflow Zone
The remote On/Off Control can be ordered with either polarity. Please refer
to the Connection Diagram on page 1 for On/Off connections.
150
100
50
Soaking Zone
120 sec max
time above 217° C
45-75 sec
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.
<1.5° C/sec
Preheating Zone
240 sec max
0
0
30
60
90
120
150
Time (sec)
180
210
240
270
300
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).
High trace = normal upper limit
Low trace - normal lower limit
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.
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.
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 8 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
OKL-T/1-W12 PERFORMANCE DATA AND OSCILLOGRAMS
Efficiency vs. Line Voltage and Load Current @Ta = +25 ꢁC
(Vout = 5V)
Maximum Current Temperature Derating at Sea Level
(Vin = 6V, Vout = 5V, airflow is from pad 10 to pad 1)
120
1.20
1.10
100
1.00
65 LFM
0.90
80
0.80
VIN = 6.5V
VIN = 12V
VIN = 14V
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
60
40
20
0
0
0.2
0.4
0.6
Load Current (Amps)
0.8
1
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (ºC)
Efficiency vs. Line Voltage and Load Current @Ta = +25 ꢁC
(Vout = 3.3V)
Maximum Current Temperature Derating at Sea Level
(Vin = 6.5V to 16V, airflow is from pad 10 to pad 1)
100
90
80
70
60
50
40
30
20
10
0
1.20
1.10
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
VIN = 3.9V
VIN = 12V
VIN = 14V
65 LFM
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (ºC)
Load Current (Amps)
Output Ripple and Noise (Vin=4.5V, Vout=3.3V, Iout=1A, Cload=0, Ta=+25ꢁC.,
ScopeBW=100MHz)
Output Ripple and Noise (Vin=12V, Vout=3.3V, Iout=1A, Cload=0, Ta=+25ꢁC.,
ScopeBW=100MHz)
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 9 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
OKL-T/1-W12 PERFORMANCE DATA AND OSCILLOGRAMS
Output Ripple and Noise (Vin=14V, Vout=3.3V, Iout=1A, Cload=0, Ta=+25ꢁC.,
ScopeBW=100MHz)
Step Load Transient Response (Vin=4.5V, Vout=3.3V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.)Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=4.5V, Vout=3.3V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=12V, Vout=3.3V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=12V, Vout=3.3V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 10 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
OKL-T/1-W12 PERFORMANCE DATA AND OSCILLOGRAMS
Step Load Transient Response (Vin=14V, Vout=3.3V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=14V, Vout=3.3V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Efficiency vs. Line Voltage and Load Current @Ta = +25 ꢁC
(Vout = 2.5V)
Maximum Current Temperature Derating at Sea Level
(Vin = 4V, Vout = 2.5V)
100
90
1.20
1.10
1.00
80
70
60
50
40
30
20
10
0
VIN = 3.5V
VIN = 12V
VIN = 14V
65 LFM
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0
0.2
0.4
0.6
0.8
1
1.2
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (ºC)
Load Current (Amps)
Output Ripple and Noise (Vin=3.5V, Vout=2.5V, Iout=1A, Cload=0, Ta=+25ꢁC.,
ScopeBW=100MHz)
Output Ripple and Noise (Vin=12V, Vout=2.5V, Iout=1A, Cload=0, Ta=+25ꢁC.,
ScopeBW=100MHz)
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 11 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
OKL-T/1-W12 PERFORMANCE DATA AND OSCILLOGRAMS
Output Ripple and Noise (Vin=14V, Vout=2.5V, Iout=1A, Cload=0, Ta=+25ꢁC.,
ScopeBW=100MHz)
Step Load Transient Response (Vin=3.5V, Vout=2.5V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=3.5V, Vout=2.5V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=12V, Vout=2.5V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=12V, Vout=2.5V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 12 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
OKL-T/1-W12 PERFORMANCE DATA AND OSCILLOGRAMS
Step Load Transient Response (Vin=14V, Vout=2.5V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=14V, Vout=2.5V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Efficiency vs. Line Voltage and Load Current @Ta = +25 ꢁC
(Vout = 1.8V)
Maximum Current Temperature Derating at Sea Level
(Vin = 4V, Vout = 1.8V)
100
90
1.20
1.10
1.00
80
70
60
50
40
30
20
10
0
65 LFM
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
VIN = 2.9V
VIN = 12V
VIN = 14V
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (ºC)
Load Current (Amps)
Efficiency vs. Line Voltage and Load Current @Ta = +25 ꢁC
(Vout = 1.5V)
100
90
80
70
60
50
40
30
20
10
VIN = 2.9V
VIN = 12V
VIN = 14V
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Load Current (Amps)
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 13 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
OKL-T/1-W12 PERFORMANCE DATA AND OSCILLOGRAMS
Output Ripple and Noise (Vin=2.6V, Vout=0.9V, Iout=1A, Cload=0, Ta=+25ꢁC.,
ScopeBW=100MHz)
Output Ripple and Noise (Vin=12V, Vout=0.9V, Iout=1A, Cload=0,
Ta=+25ꢁC., ScopeBW=100MHz)
Output Ripple and Noise (Vin=14V, Vout=0.9V, Iout=1A, Cload=0,
Ta=+25ꢁC., ScopeBW=100MHz)
Step Load Transient Response (Vin=2.6V, Vout=0.9V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=2.6V, Vout=0.9V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 14 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
OKL-T/1-W12 PERFORMANCE DATA AND OSCILLOGRAMS
Step Load Transient Response (Vin=12V, Vout=0.9V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=12V, Vout=0.9V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=14V, Vout=0.9V, Cload=0, Iout=0.5A to 1A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
Step Load Transient Response (Vin=14V, Vout=0.9V, Cload=0, Iout=1A to 0.5A,
Ta=+25ꢁC.) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 0.5A/div.
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 15 of 16
OKL-T/1-W12 Series
Programmable Output 1-Amp iLGA SMT PoLs
TAPE AND REEL INFORMATION
330.20
13.000
FEED (UNWIND)
DIRECTION
1.50
0.059 TYP
5.00
0.197
REF
10.44
0.411
4.00
0.157
2.00
1.75
0.069
5.00
0.197
REF
0.77
0.030
0.079
13.41
0.528
24.00
0.945
NOZZLE DIA.
4.00
0.157 TYP.
Contents: 800 units per reel
16.00
0.63 PITCH
TOP COVER TAPE
5.00
0.197
Dimensions in inches [mm]
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04 Mar 2011 MDC_OKL-T/1-W12 Series.A02 Page 16 of 16
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