DKB1PH3 Series
7 pin SIP Package, 1 Watt, Isolated, Unregulated
Features
7pin SIP Package with Industry-Standard Footprint
Input / Output Isolation Voltage: 3kVDC
High Efficiency
Lead Free Design, RoHS Compliant
Operating temperature: -40°C to +105°C
Meet Safety Standard / Approval: IEC / EN60950-1
Applications
These converters are well suitable for battery
operated equipment, measurement equipment,
telecom, wireless network, Industry control system,
everywhere where isolated, tightly regulated
voltages and compact size are required.
Technical Specification All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Output
Voltage
(V)
Output Current
(mA) (1)
Full Load
3.3
300
5
200
±3.3
±150
DKB1-03D1PH3
±5
DKB1-05S0PH3
Input Current (mA)
Typ.
No Load Full Load
Eff .(%) (2)
Typ.
Capacitive Load,
max. (3) (uF)
405
74
68
404
75
47
405
74
33/33
±100
404
75
22/22
3.3
300
264
75
68
DKB1-05S1PH3
5
200
260
77
47
DKB1-05SAPH3
9
110
248
80
33
DKB1-05S2PH3
12
83
247
81
22
DKB1-05S3PH3
15
67
247
81
22
24
42
247
81
10
25
40
247
81
10
DKB1-05D0PH3
±3.3
±150
264
75
33/33
DKB1-05D1PH3
±5
±100
260
77
22/22
DKB1-05DAPH3
±9
±55
248
80
10/10
DKB1-05D2PH3
±12
±42
247
81
10/10
DKB1-05D3PH3
±15
±33
247
81
10/10
DKB1-05D5PH3
±24
±21
247
81
4.7/4.7
DKB1-12S0PH3
3.3
300
109
76
68
DKB1-12S1PH3
5
200
107
78
47
DKB1-12SAPH3
9
110
107
78
33
12
83
104
80
22
15
67
104
80
22
DKB1-12S5PH3
24
42
104
80
10
DKB1-12D0PH3
±3.3
±150
109
76
33/33
DKB1-12D1PH3
±5
±100
107
78
22/22
DKB1-12DAPH3
±9
±55
107
78
10/10
Model
Number
Input Voltage
Range(V)
DKB1-03S0PH3
DKB1-03S1PH3
DKB1-03D0PH3
2.97-3.63
Nominal:3.3
DKB1-05S5PH3
DKB1-05SLPH3
4.5-5.5
Nominal:5
DKB1-12S2PH3
DKB1-12S3PH3
10.8-13.2
Nominal:12
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35
28
17
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Page 1 of 7
DKB1-12D2PH3
DKB1-12D3PH3
DKB1-15S0PH3
±12
±15
3.3
Output Current
(mA) (1)
Full Load
±42
±33
300
DKB1-15S1PH3
5
200
85
78
47
DKB1-15SAPH3
9
110
85
78
33
DKB1-15S2PH3
12
83
83
80
22
15
67
83
80
22
24
42
83
80
10
DKB1-15D0PH3
±3.3
±150
87
76
33/33
DKB1-15D1PH3
±5
±100
85
78
22/22
DKB1-15DAPH3
±9
±55
85
78
10/10
DKB1-15D2PH3
±12
±42
83
80
10/10
DKB1-15D3PH3
±15
±33
83
80
10/10
DKB1-24S0PH3
3.3
300
54
77
68
DKB1-24S1PH3
5
200
53
79
47
DKB1-24SAPH3
9
110
52
80
33
DKB1-24S2PH3
12
83
51
81
22
15
67
51
81
22
24
42
51
81
10
DKB1-24D0PH3
±3.3
±150
54
77
33/33
DKB1-24D1PH3
±5
±100
53
79
22/22
DKB1-24DAPH3
±9
±55
52
80
10/10
DKB1-24D2PH3
±12
±42
51
81
10/10
DKB1-24D3PH3
±15
±33
51
81
10/10
Model
Number
Input Voltage
Range(V)
DKB1-15S3PH3
DKB1-15S5PH3
13.5-16.5
Nominal:15
DKB1-24S3PH3
DKB1-24S5PH3
21.6-26.4
Nominal:24
Output
Voltage
(V)
Input Current (mA)
Typ.
No Load Full Load
104
104
87
15
8
Eff .(%) (2)
Typ.
Capacitive Load,
max. (3) (uF)
80
80
76
10/10
10/10
68
Input Specifications
3.3V nominal input
5V nominal input
12V nominal input
15V nominal input
24V nominal input
Input filter
2.97-3.63V
4.5-5.5V
10.8-13.2V
13.5-16.5V
21.6-26.4V
Capacitor
Environmental Specifications
Operating ambient temperature
-40°C to +105°C
Maximum case temperature
+125°C
Storage temperature range
-55°C to +125°C
Relative humidity
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95% RH max.
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Page 2 of 7
Output Specifications
Output power
1Watts max.
Voltage accuracy
Nominal Vin and full load
3.3Vdc
5Vdc
9Vdc
12Vdc
15Vdc
24Vdc
25Vdc
Voltage balance
Dual output
±1% max.
Minimum load
10% load of full load
Line regulation
For Vin charge of 1%
Load regulation
Nominal Vin and 10%-100% load
3.3Vdc
5Vdc
9Vdc
12Vdc
15Vdc
24Vdc
25Vdc
±1.2% Typ.
15% Typ.
13% Typ.
9% Typ.
8% Typ.
7% Typ.
6% Typ.
6% Typ.
50mVp-p Typ.
100mVp-p Max.
See table
Ripple and Noise (20MHz Bandwidth)
Maximum capacitive load
Output short circuit protection
3.135-3.399V
4.75-5.15V
8.73-9.18V
11.64-12.24V
14.55-15.30V
23.52-24.36V
24.50-25.37V
DKB1-03SXP/03DXP/24SXP/ 24DXP
Other models
Temperature coefficient
3S Max.
Continuous, Automatic recovery
±0.03%/°C Typ.
General Specifications
Efficiency
Nominal input and full load
Isolation voltage
Input to output
Isolation resistance
500VDC
See table
3000VDC (60 second)
1000MΩ min.
Isolation capacitance
30pF typ.
150kHz typ.
Switching frequency
300kHz max.
Reliability, calculated MTBF
2×10
6
Hrs
Physical Specifications
Case material
Plastic (UL94 V-0)
Potting material
PU (UL94 V-0)
Dimensions
19.6× 10.1× 6.0 mm
Weight
2g Typ.
Note
1. Io below this value will not damage these converters, however, they may not meet all listed specifications.
2. Typical value, tested at nominal input and full load.
3. For each output.
4. Specifications subject to change without notice.
5. In case of long input lines or hot plug-in requirements, we recommended to use an external low ESR capacitor
(22uF) near to the converter’s input pins.
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Page 3 of 7
Power Derating Curve
Power Derating Curve
Output Power (%)
120
100
80
60
40
20
0
-40
-20
0
20
40
60
85
80
105
100
120
Ambient Temp.TA ()
Mechanical Dimensions
Single output
A_LS-2WR2
DKB1-05S1PH3
DATE CODE
Dual output
B_LS-2WR2
DKB1-05D1PH3
DATE CODE
Pin Assignment
Pin Single
Dual
1
+Vin
2
-Vin
+Vin
-Vin
5
-Vout
-Vout
6
No pin
Common
7
+Vout
+Vout
Unit: mm (inch)
Pin section tolerances:±0.1(±0.004)
General tolerances:±0.5(±0.02)
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Page 4 of 7
Test Configurations
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
A
A
DC
Power Supply
DC/DC
converter
V
V
Load
◎DC Power Supply: It offers a wide voltage and current range precisely.
◎Current meter (A): Accuracy 200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits)
2000mA ~ 20A
2 ranges+(0.3% rdg + 2 digits).
◎Voltage meter (V): Accuracy +(0.03% rdg + 4 digits).
◎Load: At full load.
◎Wires: The resistance of the wires must be small.
1. Input voltage range: Narrow input voltage range(±10%)、wide input voltage range (2:1 and 4:1)。
EX: Narrow input voltage range(±10%)
5V nominal input
4.5~5.5V
12V nominal input
10.8~13.2V
24V nominal input
21.6~26.4V
Wide input voltage range 2:1
5V nominal input
12V nominal input
24V nominal input
48V nominal input
4.5~9V
9~18V
18~36V
36~75V
Wide input voltage range 4:1 (W)
24V nominal input
9~36V
48V nominal input
18~75V
2. Input power :
Pin = Vin x Iin
Vin:Input voltage
Iin:Input current
Pout = Vout x Iout
Vout:Output voltage
Iout:Output current
3. Output power :
4. Efficiency :
Efficiency =
Pout
Pin
x100%
Pout: Output power
Pin: Input power
5. Voltage accuracy:
│Vout-Vout(nominal)│
Vout
x100%
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Vout:Output voltage
Vout(nominal):Nominal output voltage
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Page 5 of 7
6. Line regulation:
Narrow input voltage range(±10%)and unregulated output voltage series.
│
│
Line regulation=
ΔVout
ΔVin
ΔVout = Vout(+10%)-Vout(-10%) x100%
Vout
Vout(+10%):Output voltage at Vin = 1.1xVin(nominal)&full load
Vout(-10%):Output voltage at Vin = 0.9xVin(nominal)&full load
Vout:Output voltage at Vin = Vin(nominal)&full load
ΔVin = Vin(+10%)-Vin(-10%) x100%
Vin(nominal)
Vin(+10%):Input voltage = 1.1xVin(nominal)
Vin(-10%):Input voltage = 0.9xVin(nominal)
Vin(nominal):Nominal Input voltage
7. Load regulation :
│Vout(FL)-Vout(NL)│ x100%
Vout(FL)
Vout(FL): Output voltage at full load
Vout(NL): Output voltage at 25% full load or 10% full load
8. Ripple and Noise: as shown below. The bandwidth is 0-20MHz.
Ripple&Noise
Noise
Ripple
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Output Ripple&Noise measurement test circuit: as shown below.
Copper strip
DC/DC
converter
Co
Load
Oscilloscope
Copper strip
Co: usually 0.47uF.
9. Temperature derating curve: The DC-DC converter will operate over a wider temperature range if less power
Output Power (%)
is drawn from the output and the device is already running. The temperature derating curve shows the operating
power-temperature range. As shown below.
120
100
80
60
40
20
0
-40
-20
0
20
40
60
85
80
105
100
120
Ambient Temp.TA (℃)
10. Switching frequency: The nominal operating frequency of the DC-DC converters.
11. Input to output isolation: The dielectric breakdown strength test between input and output circuits. This is the
isolation voltage the device is capable of withstanding for a specified time, usually 1 second or 1 minute.
12. Input souce impedance: The power module should be connected to low ac-impedance input souce.
Highly inductive souce impedances can affect the stability of the power module. In applications where power is
supplied over long lines and output loading is high , it maybe necessary to use a capacitor at the input to ensure
startup. Capacitor mounted close to the power module helps ensure stability of the unit , it is commended to use
a good quality low Equivalent Series Resistance ( ESR < 0.1Ω at 100KHz ) capacitor of a 22uF for the power
module.
DC
Power Supply
Cin
DC/DC
converter
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Load
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Page 7 of 7
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