TECHNICAL SPECIFICATION All specifications are typical at nominal i nput, full load and 25ºC otherwise noted
OUTPUT SPECIFICATIONS
Output power 3 Watts max
Voltage accuracy Full load and nominal Vin ± 2%
Minimum load (Note 1)
Line regulation LL to HL at Full Load
Load regulation
Cross regulation Asymmetr ical load 25% / 100% FL ± 5%
Ripple and noise 20MHz bandwidth 50mVp-p
Temperature coefficient
Transient response recovery time 25% load step change 200uS
Over load protection % of FL at nominal input 180% typ
Short circuit protection Continuous, automatics recovery
INPUT SPECIFICA TIONS
Input voltage range
Input filter Pi type
Input surge voltage
100mS max
Input reflected ripple (Note 3) Nominal Vin and full load 20mAp-p
Start up time Nominal Vin and constant resistor load 350mS typ
Remote ON/OFF (Note 4)
Remote off input current
VKC03-48S05 Derating Curve
UL E193009
TUV R3-50007936
CB JPTUV-003641
CE MARK
25% to 100% FL Single
Dual
24V nominal input (Note 2)
48V nominal input
24V input
48V input
DC-DC ON
DC-DC OFF
Nominal input
Open or 3.5V < Vr < 12V
Short or 0V < Vr < 1.2V
10% of FL
0.02% / ºC, max
9 – 36VDC
18 – 75VDC
100
75
50
25
OUTPUT POWER (%)
0
Nature convection
M! Version
50 60 70 80 90
AMBIENT TEMPERATURE (ºC)
M1 Version
100 -40 -25 0 -10
• 3 WATTS REGULATED OUTPUT POW ER
• 4:1 WIDE I NPUT VOLTAGE RANGE
• INTERNATIONAL SAFETY STA NDARD APPROVAL
• FIVE-SIDED SH IELD
• HIGH EFFICIENCY UP TO 78%
• STANDARD 24 PIN DIP PACKAGE & SMD TYPE PACKAGE
• OVER CURRENT PROTECTION
The VKC03 offers 3 watts of output power from a package in an IC compatible 24pin DIP
configuration without derating to 71ºC ambient temperature. VKC03 series have 4:1 wide
input voltage of 9-36 and 18-75VDC. The VKC03 features 1600VDC of isolation,
short-circuit protection and as well as five sided shielding. A safety designed meet to
EN60950 and UL1950. All models are particularly suited to telecommunications,
industrial, mobile telecom and test equipment applications.
GENERAL SPECIFIC ATIONS
Efficiency See table
± 0.2%
± 0.2%
± 1%
Isolation voltage
Isolation resistance
Isolation capacitance 300pF, ma
Switching frequency 300KHz, typ
Design meet safety standard UL1950, EN60950
Case material Nickel-coated coppe
Base material Non-conductive black plastic
Potting material Epoxy (UL94-V0)
Dimensions
Weight
MTBF (Note 5) 2.941 x 106 hrs
Input to Output
Input(Ouput) to Case DIP
SMD
1.25 X 0.80 X 0.40 Inch
(31.8 X 20.3 X 10.2 mm)
DIP
SMD
1600VDC, min
1600VDC, min
1000VDC, min
109ohms, min
16g (0.55oz)
18g (0.62oz)
ENVIRONMENTA L SPEC IFICATIONS
50VDC
100VDC
2.5mA
Operating temperature
Maximum case temperature 100ºC
Storage temperature range -55ºC ~ +105ºC
Thermal impedance Nature convection 20ºC/Watt
Thermal shock MIL-STD-810D
Vibration 10~55Hz, 2G, 30minutes along X,Y and Z
Relative humidity 5% to 95% RH
Standard
M1 (Note 6)
-25ºC ~ +85ºC (with derating)
-40ºC ~ +85ºC (non-derating)
EMC CHARACT ER I STICS
Conducted emissions EN55022 Level A
Radiated emissions EN55022 Level A
ESD EN61000-4-2 Perf. Criteria2
Radiated immunity EN61000-4-3 Perf. Criteria2
Fast transient EN61000-4-4 Perf. Criteria2
Surge EN61000-4-5 Perf. Criteria2
Conducted immunity EN61000-4-6 Perf. Criteria2
Model
Number
VKC03-24S05 9 – 36 VDC 5 VDC 500mA 147mA 75 1000uF
VKC03-24S12 9 – 36 VDC 12 VDC 250mA 169mA 78 170uF
VKC03-24S15 9 – 36 VDC 15 VDC 200mA 169mA 78 110uF
VKC03-24D05 9 – 36 VDC ± 5 VDC ± 250mA 149mA 74 ± 550uF
VKC03-24D12 9 – 36 VDC ± 12 VDC ± 125mA 172mA 77 ± 96uF
VKC03-24D15 9 – 36 VDC ± 15 VDC ± 100mA 172mA 77 ± 47uF
VKC03-48S05 18 – 75 VDC 5 VDC 500mA 74mA 75 1000uF
VKC03-48S12 18 – 75 VDC 12 VDC 250mA 85mA 78 170uF
VKC03-48S15 18 – 75 VDC 15 VDC 200mA 86mA 77 110uF
VKC03-48D05 18 – 75 VDC ± 5 VDC ± 250mA 75mA 74 ± 550uF
VKC03-48D12 18 – 75 VDC ± 12 VDC ± 125mA 86mA 77 ± 96uF
VKC03-48D15 18 – 75 VDC ± 15 VDC ± 100mA 85mA 78 ± 47uF
Note
1. The VKC03 series required a minimum 10% loading on the output to maintain specified regulation. Operation under no-load condition will not damage
these devices, however they may not meet all listed specification.
2. Simulated source impedance of 12uH. 12uH inductor on series with +Vin.
3. Start up voltage10 Vdc
4. The ON/OFF control pin voltage is referenced to negative input.
5. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at 40ºC. (Ground fixed and controlled environment)
6. M1 version is more efficient, therefore, it can be operated in a more extensive temperature range than standard.
7. Maximum value at nominal input voltage and full load of standard type.
8. Typical value at nominal input voltage and full load
9. Test by minimum Vin and constant resistor load.
Input
Range
Output
Voltage
Output
Current
Input
Current
0.18(4.6)
24
1
23
20
BOTTOM
VIEW
15
10
11
13
12
0.60(15.2)
0.80(20.3)
2
1.25 (31.8)
Pin size is 0.02(0.5) Dia or
0.01 x 0.02
0.70 (17.8)
0.20 (5.1)
0.15
(3.8)
0.40
(10.2)
0.25 x 0.50)Rectangular Pin
Pin Area
0.04 x 0.02
(1.0 x 0.5)
1. All dimensions in Inches (mm)
2. Pin pitch tolerance 0.014(0.35)
1.00(25.4)
0.92(23.4)
24
0.02(0.5)
20
BOTTOM
VIEW
16
13
0.80(20.3)
1
5
9
12
Eff
(7)
(%)
Suffix-SMD
0.10 (2.54)
0.15 (3.81) 0.25 (6.35)
Capacitor
Load max
0.44(11.2)
0.43(10.9)
1.26 (32.0)
DIP PIN CONNECTION
PIN SINGLE DUAL
1 + INPUT + INPUT
2 + INPUT + INPUT
10 NC
11 NC COMMON
12 - OUTPUT NC 13 + OUTPUT - OUTPUT
COMMON
PIN SINGLE DUAL
24 - INP U T - INPUT
23 - INP U T - INPUT
20 CTRL
15 NC + OUTPUT
CTRL
PIN SINGLE DUAL
1 + INPUT + INPUT
2 + INPUT + INPUT
10 NC
11 NC COMMON
12 - OUTPUT NC 13 + OUTPUT - OUTPUT
Others NC NC Others NC NC
SMD PIN CONNECTI ON
PIN SINGLE DUAL
24 - INP U T - INPUT
23 - INP U T - INPUT
COMMON
20 CTRL
15 NC + OUTPUT
CTRL