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3 Watt

Single and Dual Output
Regulated, 4:1 Wide Input Range


Extra small SMD or DIP package

Our 3 watt 4:1 wide input DSB(H)3 series DC-DC converter features continuous short circuit protection, no minimum load requirement and an extra small SMD or DIP package of 0.52" x 0.36" x 0.40". This series also features available 3000 Vdc input to output isolation and meets UL60950-1, EN60950-1 and IEC60950-1 safety standards.

INPUT

  • Operating input voltage range
    • 12 Vdc nominal input: 4.5 - 18 Vdc
    • 24 Vdc nominal input: 9 - 36 Vdc
    • 48 Vdc nominal input: 18 - 75 Vdc
  • Start up time
    • Constant resistive load
      • Power up: 5 - 10 mS
      • Remote On/Off: 5 - 10 mS
  • Input surge voltage, 1 sec. max.
    • 12 Vdc nominal input: 25 Vdc
    • 24 Vdc nominal input: 50 Vdc
    • 48 Vdc nominal input: 100 Vdc
  • Input filter: Capacitor type
  • Input Reflected Ripple Current
    • 12 Vdc nominal input: 20 mAp-p
    • 24 Vdc nominal input: 20 mAp-p
    • 48 Vdc nominal input: 20 mAp-p
  • Remote On/Off: Control pin applied current via 1kΩ
    • DC-DC ON: Open or high impedance
    • DC-DC OFF: 2 - 4 Vdc
    • Remote off input current: 2.5 Vdc

OUTPUT

  • Voltage accuracy: ±1%
  • Line regulation
    • Low line to high line at full load: ±0.2%
  • Load regulation
    • No load to full load
      • Single: ±1%
      • Dual: ±1%
    • 10% load to 90% load
      • Single: ±0.5%
      • Dual: ±0.8%
  • Cross regulation
    • Asymmetrical load 25%/100%FL, Dual: ±5%
  • Ripple and noise
    • Measured by 20 MHz bandwidth: 50 mVp-p
  • Temperature coefficient: 0.02%/°C
  • Transient response recovery time: 500µs
  • Short circuit protection: continuous automatics recovery

GENERAL

  • Isolation voltage, 1 min.
    • Standard: 1600 Vdc
    • Suffix "H": 3000 Vdc
  • Isolation resistance: 500 Vdc
  • Isolation capacitance
    • Standard: 50 pF
    • Suffix "H": 50 pF
  • Switching frequency: 100 kHz
  • Design meets safety standards: UL60950-1, EN60950-1, IEC60950-1

ENVIRONMENTAL

  • Operating ambient temperature
    • Without derating: -40 to 71°C
    • With derating: 71 to 105°C
  • Storage temperature range: -55 to 125°C
  • Thermal shock: MIL-STD-810F
  • Vibration: MIL-STD-810F
  • Relative humidity: 5 to 95% RH

PHYSICAL

  • Dimensions: 0.52" x 0.36" x 0.40"
  • Case material: Non-conductive, black, plastic
  • Base material: Non-conductive, black, plastic
  • Potting material: Silicone (UL94 V-0)
  • Weight: 2.7 g (0.10 oz)
  • MTBF: 5.672 x 106 hours, MIL-HDBK-217F, full load

EMC CHARACTERISTICS

  • EMI
    • Class A and B: EN55022
  • ESD, EN61004-2, Perf. Criteria A
    • Air: ±8kV
    • Contact: ±6kV
  • Radiated immunity
    • EN61000-4-3: 10V/m, Perf. Criteria A
  • Fast transient
    • EN61000-4-4: ±2kV, Perf. Criteria A
  • Surge
    • EN61000-4-5: ±1kV, Perf. Criteria A
  • Conducted immunity
    • EN61000-4-6: 10Vr.m.s, Perf. Criteria A
Input Voltage
(Vdc)
Output Voltage
(Vdc)
Output Current
at Full Load
(mA)
Input Current
at No Load
(mA)
Efficiency
%
Model Number* Maximum Capacitor
Load µF
Single Output
4.5 - 18 3.3 700 35 76 DSB(H)3-12S33 4700
5 600 40 80 DSB(H)3-12S5 2530
12 250 40 83 DSB(H)3-12S12 1220
15 200 40 84 DSB(H)3-12S15 1000
24 125 40 82 DSB(H)3-12S24 470
9 - 36 3.3 700 20 77 DSB(H)3-24S33 4700
5 600 20 80 DSB(H)3-24S5 2530
12 250 25 83 DSB(H)3-24S12 1220
15 200 25 83 DSB(H)3-24S15 1000
24 125 25 82 DSB(H)3-24S24 470
18 - 75 3.3 700 12 77 DSB(H)3-48S33 4700
5 600 12 80 DSB(H)3-48S5 2530
12 250 13 83 DSB(H)3-48S12 1220
15 200 14 83 DSB(H)3-48S15 1000
24 125 14 82 DSB(H)3-48S24 470
Dual Output
4.5 - 18 ±5 ±300 40 80 DSB(H)3-12-5 ±1470
±12 ±125 40 82 DSB(H)3-12-12 ±680
±15 ±100 40 82 DSB(H)3-12-15 ±470
9 - 36 ±5 ±300 25 80 DSB(H)3-24-5 ±1470
±12 ±125 25 82 DSB(H)3-24-12 ±680
±15 ±100 25 82 DSB(H)3-24-15 ±470
18 - 75 ±5 ±300 14 80 DSB(H)3-48-5 ±1470
±12 ±125 14 82 DSB(H)3-48-12 ±680
±15 ±100 14 82 DSB(H)3-48-15 ±470

* "DSB” prefix=SMD Type. For DIP type, use prefix “DSH” instead of “DSB".