OKL-T/3-W5N-C Murata Power Solutions Inc, OKL-T/3-W5N-C Datasheet - Page 16

• Manufacturer Part Number: OKL-T/3-W5N-C
• Description: CONV DC/DC 9.9W 3A 5VIN SMD
• Manufacturer: Murata Power Solutions Inc
• Series: Okami™ OKL-T/3-W5r
• Type: Point of Load (POL) Non-Isolatedr

Specifications of OKL-T/3-W5N-C

• Number Of Outputs: 1
• Output: 0.6 ~ 3.63V
• Power (watts): 9.9W
• Mounting Type: Surface Mount
• Voltage - Input: 2.4 ~ 5.5V
• Package / Case: 12-SMD Module
• 1st Output: 0.6 ~ 3.63 VDC @ 3A
• Size / Dimension: 0.48" L x 0.48" W x 0.24" H (12.2mm x 12.2mm x 6.1mm)
• Power (watts) - Rated: 9.9W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 95.3%
• Approvals: CSA, cUL, EN, IEC, UL
• Output Power: 9.9 W
• Input Voltage Range: 2.4 V to 5.5 V
• Input Voltage (nominal): 5 V
• Package / Case Size: 12.2 mm x 12.2 mm x6.2 mm
• Output Voltage: 0.6 V to 3.63 V
• Product: Non-Isolated / POL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 811-2212-2

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.
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 indefi nitely.
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.
Remote On/Off Control
The remote On/Off Control can be ordered with either polarity. Please refer
to the Connection Diagram on page 1 for On/Off connections.
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 Specifi cations)
with respect to –Vin.
brought to within a low voltage (see Specifi cations) with respect to –Vin.
The device is off (disabled) when the On/Off is pulled high with respect to
–Vin (see specifi cations).
signal current when brought low and withstand appropriate voltage when
brought high. Be aware too that there is a fi nite time in milliseconds (see
Specifi cations) 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
rated specifi cations. 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.
The “hiccup” system differs from older latching short circuit systems
Positive polarity models are enabled when the On/Off pin is left open or
Negative polarity devices are on (enabled) when the On/Off is open or
Dynamic control of the On/Off function should be able to sink appropriate
These converters do not require external capacitance added to achieve
www.murata-ps.com
Voltage Range Graph
Please observe the limits below for voltage input and output ranges. These
limits apply at all output currents.
Soldering Guidelines
Murata Power Solutions recommends the specifi cations below when installing these
converters. These specifi cations vary depending on the solder type. Exceeding these
specifi cations may cause damage to the product. Your production environment
may differ therefore please thoroughly review these guidelines with your process
engineers.
Recommended Lead-free Solder Refl ow Profi le
250
200
150
100
50
0
6
5
4
3
2
1
0
0
0.5
Programmable Output 3-Amp iLGA SMT PoLs
Vin=2.4V / Vout=1.8V
For Sn/Ag/Cu based solders:
Preheat Temperature
Time over Liquidus
Maximum Peak Temperature
Cooling Rate
For Sn/Pb based solders:
Preheat Temperature
Time over Liquidus
Maximum Peak Temperature
Cooling Rate
Reflow Solder Operations for surface-mount products (SMT)
30
<1.5° C/sec
1
60
28 Mar 2011 MDC_OKL-T/3-W5 Series.A07 Page 16 of 17
90
1.5
OKL-T/3-W5 Series
Preheating Zone
240 sec max
Soaking Zone
120
Output Voltage (V)
Peak Temp.
120 sec max
235-260° C
Time (sec)
2
Less than 1 ºC. per second
45 to 75 seconds
260 ºC.
Less than 3 ºC. per second
Less than 1 ºC. per second
60 to 75 seconds
235 ºC.
Less than 3 ºC. per second
150
180
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2.5
time above 217° C
Reflow Zone
45-75 sec
210
High trace = normal upper limit
Low trace = normal lower limit
3
Upper Limit
Lower Limit
240
3.5
270
300