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OKR-T/3 Series
Adjustable Output 3-Amp SIP-mount DC/DC Converters
Performance/Functional Speci?cations
All speci?cations are typical unless noted See Note 1.
Input
Dynamic Characteristics
Input Voltage Range
Recommended External Fuse
See Ordering Guide. See note 16.
6 Amps
Dynamic Load Response (50 to 100% load step, no external caps)
di/dt = 1 A/ μ Sec 20 μ Sec to within ±2% of ?nal value
Reverse Polarity Protection (Note 9)
Isolation
Start-Up Voltage
Undervoltage Shutdown
None. Use an external fuse.
Not isolated. The input and output
commons are internally connected.
4.2 Volts
3.4 Volts
Switching Frequency
Calculated MTBF (Note 4)
OKR-T/3-W12-C
OKR-T/3-W12-C
600 KHz
Environmental
12,230,400 hours (4a)
5,273,231 hours (4b)
Re?ected (Back) Ripple Current (Note 2) 20 mA pk-pk
Operating Temperature Range
Internal Input Filter Type
Input Current:
Full Load Conditions
Capacitive
See Ordering Guide
(Ambient temp., Vout=5 V., vertical mount)
Full power, see derating curves -40 to +85 °C.
Operating PC Board Range, no derating -40 to +100 °C.
0.4 A Sec.
InrushTransient
Shutdown Mode (Off, UV, OT)
Output Short Circuit
No Load, 5V out
Low Line (Vin=Vmin, 5Vout)
Remote On/Off Control (Note 5)
Positive Logic
Current
Remote On/Off Control
Positive Logic
2
5 mA
60 mA
80 mA
2.26 Amps
[Standard version]
ON = +2 V. to +Vin max. or open pin
OFF = –0.3 to +0.4 V. max. or ground pin
1 mA
[“E” version]
ON = +2 V. to +Vin max.,
100K Ω pulldown to ground
Storage Temperature Range
Thermal Protection/Shutdown
Relative Humidity
Restriction of Hazardous Substances
Outline Dimensions
Weight
Safety
-55 to +125 °C.
+130 °C.
to 85%/+85 ° C.
RoHS-6 (does not claim EU RoHS exemption
7b–lead in solder)
Physical
See Mechanical Speci?cations
0.07 ounces (2 grams)
Certi?ed to UL/cUL 60950-1
CSA-C22.2 No. 60950-1
IEC/EN 60950-1, 2nd edtion
OFF = open pin or –0.3 to +0.4 V. max.
Current
1 mA max.
Absolute Maximum Ratings
Turn-on Time:
Vin on to Vout regulated
Remote On to Vout regulated
Minimum Loading
Output Current Range
(to rated speci?cations)
Accuracy (50% load, no trim)
Temperature Coef?cient
6 mSec
6 mSec
Output
No minimum load
0 to 3 Amps
±2 % of Vnom
±0.02% per °C. of Vout range
Input Voltage
Continuous or transient
Output Power
On/Off Control
Input Reverse Polarity Protection
Output Current
Storage Temperature
15 Volts max.
15 Watts max.
0 Volts. min. to +Vin. max.
See Fuse section
Current-limited. Devices can withstand
sustained short circuit without damage.
-40 to +125 deg. C.
Ripple/Noise (20 MHz bandwidth)
Line/Load Regulation
Ef?ciency
Maximum Capacitive Loading
Cap-ESR=0.001 to 0.015 Ohms
Cap-ESR >0.015 Ohms
Current Limit Inception
(98% of Vout setting, after warm up)
Short Circuit Mode (Notes 6, 12)
Short Circuit Current Output
Protection Method
removal. (Note 8)
Short Circuit Duration
(output shorted to ground)
Overvoltage protection
See Ordering Guide and note 14
See Ordering Guide and note 10
See Ordering Guide and performance
graphs
200 μ F
1000 μ F
8 Amps
0.6 Amp
Hiccup autorecovery upon overload
Continuous, no damage
None
Absolute maximums are stress ratings. Exposure of devices to greater than any of these
conditions may adversely affect long-term reliability. Proper operation under conditions
other than those listed in the Performance/Functional Speci?cations Table is not implied or
recommended.
CAUTION: This product is not internally fused. To comply with safety agency certi?cations
and to avoid injury to personnel or equipment, the user must supply an external fast-blow
fuse to the input terminals.
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MDC_OKR-T/3-W12.B02 Page 3 of 18
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