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2-4W Wide AC-DC Input PCB-Mount Power Supplies
Features
90 - 305VAC Input Voltage
Class II (No ground needed)
Wide Temperature Range (-40 to +80°C)
Low off-load Power Draw
High Efciency
Key Market Segments & Applications
KAS Series
Specications
Model
KAS2
KAS4
Input Voltage Range
- 90-305VAC 47-63Hz or 120-430VDC*
90-305VAC 47-440Hz or 120-430VDC*
Inrush Current Limiting (115 / 230VAC) (1) A
30 / 50A
15 / 25A
Input Current (115 / 230VAC)
mA
75 / 55mA
110 / 70mA
Off-load Power Draw
W
<0.3W
Recommended External Fuse
-
3.15 A slow blow type
Temperature Coefcient
-
±0.02%/°C
Voltage Set Accuracy
%
±6%
±2%
Minimum Load
-
None
Overcurrent Protection
-
Hiccup mode, automatic recovery
Overvoltage Protection
%
No
Hold-up Time (115 / 230VAC)
ms
>15ms
Leakage Current (Touch)
mA
<0.25mA at <240VAC
Operating Temperature
- -40°C to +80°C, derate linearly to 40%
-40°C to +70°C, derate linearly to 40%
load from 60°C to 80°C
load from 50°C to 70°C (2)
Storage Temperature
-
-40°C to +85°C
Humidity
%RH
10% to 95% RH (non-condensing)
Cooling
-
Convection
Withstand Voltage
VAC
Input to output: 3kVAC
Immunity
- EN55024 (With external varistor L-N rated at 350Vrms maximum, 920V clamp, 0.6W minimum)
Safety Agency Certication
- UL/CSA/IEC/EN 60950-1, IEC/EN60335-1 (Designed to meet), CE Mark
Conducted and Radiated EMI
-
EN55032 Class B
Weight
g 19.9g
26g
Size (LxWxH)
in 1.12 x 1.02 x 0.67”
1.46 x 1.08 x 0.69”
(mm)
28.5 x 25.8 x 17.0 mm
37.0 x 27.5 x 17.5 mm
Mounting & Case
-
PC board mountable. Resin case (UL 94V-0)
MTBF (MIL-HDBK-217F)
hrs
>450,000 hours
Warranty
yrs
3 years
Notes
(1) Cold start, 25oC ambient. Requires 10Ω 5A external NTC thermistor
(2) Model dependent, see installation manual for details
* Safety certied for AC input, 47-63Hz only
1-800-526-2324 • www.us.tdk-lambda.com/lp/
79 Disclaimer: us.tdk-lambda.com/lp/legal.htm

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KAS Series
Model Selector
Model
Output
Voltage
(V)
Maximum
Current
(A)
KAS2-3P3 V1 3.3V
KAS4-3P3 V1 3.3V
KAS2-5
V1 5V
KAS4-5
V1 5V
KAS4-8
V1 8V
KAS2-9
V1 9V
KAS4-9
V1 9V
KAS2-12 V1 12V
KAS4-12 V1 12V
KAS4-14 V1 14V
KAS2-15 V1 15V
KAS4-15 V1 15V
KAS2-24 V1 24V
KAS4-24 V1 24V
0.6A
1.2A
0.4A
0.8A
0.5A
0.22A
0.444A
0.167A
0.333A
0.286A
0.133A
0.267A
0.083A
0.167A
Notes: (3) KAS2 10-100% load change
Power
(W)
2W
4W
2W
4W
4W
2W
4W
2W
4W
4W
2W
4W
2W
4W
Output Ripple
& Noise
(mV)
300mV
250mV
300mV
250mV
200mV
300mV
200mV
300mV
150mV
150mV
300mV
100mV
300mV
100mV
Line
Regulation
(mV)
±165mV
±16.5mV
±250mV
±25mV
±40mV
±450mV
±45mV
±600mV
±24mV
±28mV
±750mV
±30mV
±1200mV
±48mV
Load
Regulation
(typ) (3)
±198mV
±49.5mV
±300mV
±75mV
±120mV
±540mV
±135mV
±720mV
±60mV
±70mV
±900mV
±75mV
±1440mV
±120mV
Maximum
Efciency Capacitive Load
(%) (μF)
66%
68%
70%
72%
74%
73%
75%
73%
76%
76%
73%
76%
75%
77%
7000
5000
4000
4200
1470
1200
1330
500
680
470
350
330
110
120
KAS2
KAS4
Pinout
PIN #
1
2
3
4
5
6
KAS2
+Vout
-Vout
Neutral
Line
Not connected
-
KAS4
+Vout
-Vout
Not connected
Line
Neutral
Not connected
1-800-526-2324 • www.us.tdk-lambda.com/lp/
For Additional Information, please visit
us.tdk-lambda.com/lp/products/kas-series.htm
80 Revision p1.4: Mar 2017