®
LSN2 Series
Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters
Short Circuit Duration
Prebias Startup
(16)
Sequencing
Slew Rate
Startup delay until sequence start
Tracking accuracy, rising input
Tracking accuracy, falling input
Sequence pin input impedance
Remote Sense to V
OUT
Power Good Output
(14)
(“G” suffix)
Power_Good Configuration
Continuous, no damage (output shorted
to ground)
Converter will start up if the external
output voltage is less than V
NOM
2V max. per millisecond
10 milliseconds
V
OUT
= ±100mV of Sequence In
V
OUT
= ±200mV of Sequence In
400kΩ to 1MΩ
0.5V max.
(7)
TRUE (OK) = open drain
FALSE (not OK) = Signal Ground to 0.4V
MOSFET to ground with external user
pullup, 10mA max. sink
Performance/Functional Specifications
(1)
INPUT
Input Voltage Range
Isolation
Start-Up Threshold
W3 Models
12V Models
Undervoltage Shutdown
W3 Models
12V Models
Overvoltage Shutdown
Reflected (Back) Ripple Current
(2)
Internal Input Filter Type
Reverse Polarity Protection
Input Current:
Full Load Conditions
Inrush Transient
Shutdown Mode (Off, UV, OT)
Output Short Circuit
No Load
W3 models
12V models
Low Line (V
IN
= V
MIN
)
LSN2-T/6-W3
LSN2-T/6-D12
LSN2-T/10-W3
LSN2-T/10-D12
LSN2-T/16-W3
LSN2-T/16-D12
Remote On/Off Control:
(5)
Positive Logic (no model suffix)
Negative Logic (“N” model suffix)
Current
See Ordering Guide
Not isolated, input and output commons
are internally connected
2.2 Volts
8 Volts
2.0 Volts
7.5 Volts
None
10-70mAp-p (model dependent)
Capacitive
See fuse information
See Ordering Guide
0.1A
2
sec
5mA
60mA
50mA
100mA
5.54 Amps
3.85 Amps
9.14 Amps
6.31 Amps
14.63 Amps
10.2 Amps
OFF = ground pin to +0.8V max.
ON = open pin or +2.5V min. to +V
IN
max.
ON = open pin to +0.3V max.
OFF = +2.5V min. to +V
IN
max.
1mA max.
See Ordering Guide
No minimum load
±2% of V
NOM
(13)
DYNAMIC CHARACTERISTICS
Dynamic Load Response
25μsec to ±2% of final value
(50-100-50% load step, di/dt = 20A/msec)
Start-Up Time
4-7msec for V
OUT
= nominal
(V
IN
on to V
OUT
regulated or On/Off to V
OUT
)
Switching Frequency
LSN2-T/6 models
LSN2-T/10 and -T/16 models
315kHz
230kHz
TBC Hours
ENVIRONMENTAL
Calculated MTBF
(4)
Operating Temperature Range
(Ambient)
No derating, natural convection
–40 to +63°C, vertical mount, 2.5V
OUT
(9)
With derating
See Derating Curves
Operating PC Board Temperature
Storage Temperature Range
Thermal Protection/Shutdown
Density Altitude
Relative Humidity
–40 to +100°C max.
(12)
–55 to +125°C
+115°C
0 to 10,000 feet
10% to 90%, non-condensing
See Mechanical Specifications
Nylon 46
0.28 ounces (7.8 grams)
FCC part 15, class B, EN55022 (may
need external filter)
UL/cUL 60950 CSA-C22.2 No.234
IEC/EN 60950
UL94V-0
PHYSICAL
Outline Dimensions
Removable Heat Shield
Weight
Electromagnetic Interference
(conducted and radiated)
Safety
Flammability Rating
OUTPUT
Voltage Output Range
Minimum Loading
Accuracy
(50% load)
Voltage Adjustment Range
Temperature Coefficient
Ripple/Noise
(20 MHz bandwidth)
Line/Load Regulation
(See Tech Notes)
Efficiency
Maximum Capacitive Loading:
LSN2-T/6 models:
Cap-ESR = 0.001 to 0.01Ω
Cap-ESR >0.01Ω
LSN2-T/10 and -T/16 models:
Cap-ESR = 0.001 to 0.01Ω
Cap-ESR >0.01Ω
(15)
See Ordering Guide
±0.02% of V
OUT
range per °C
See Ordering Guide and
(8)
See Ordering Guide and
(10)
See Ordering Guide
ABSOLUTE MAXIMUM RATINGS
Input Voltage
(Continuous or transient)
W3 models
12V models
On/Off Control
Input Reverse Polarity Protection
Output Current
(7)
+7 Volts
+15 Volts
–0.3V min. to +V
IN
max.
See Fuse section
Current-limited. Devices can
withstand sustained short circuit
without damage.
Storage Temperature
–55 to +125°C
Lead Temperature
(soldering 10 sec. max.) +280°C
These are stress ratings. Exposure of devices to any of these conditions may adversely affect
long-term reliability. Proper operation under conditions other than those listed in the Perfor-
mance/Functional Specifications Table is not implied.
3000μF
5000μF
5000μF
10,000μF
11-13 Amps (cold startup)
11 Amps (after warm up)
18.75 Amps (cold startup)
16.75 Amps (after warm up)
24 Amps (cold startup)
21 Amps (after warm up)
600mA
Hiccup autorecovery on overload removal
Current Limit Inception:
(98% of V
OUT
)
LSN2-T/6 models
LSN2-T/10 models
LSN2-T/16 models
Short Circuit Mode
(6)
Short Circuit Current Output
Protection Method
(17)
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LSN2 Series
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