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3.5 Watt

2:1 Input Range


Miniature DC-DC Converters For Medical Applications

Our MTWA4 series of DC-DC converters packs a range of features into miniature DIP16 (0.95 x 0.57 x 0.41”) and SMD16 (0.95 x 0.57 x 0.40”) packages to better fit your design. Approved for medical applications, units provide 5,000 Vac input to output 2 MOPP isolation and remote ON/OFF. Their voltage input range (4.5–12 Vdc) is also wider than the standard 4.5–9 Vdc—making them suitable for portable devices. Units feature overvoltage, short circuit and undervoltage protection and meet IEC 60601-1 and RoHS standards.

MTWA4

INPUT

  • Voltage range, Vdc
    • 4.5 Min., 5 Typ., 12 Max., 5 Vin (nom)
    • 9 Min., 12 Typ., 18 Max., 12 Vin (nom)
    • 18 Min., 24 Typ., 36 Max., 24 Vin (nom)
    • 36 Min., 48 Typ., 75 Max., 28 Vin (nom)
  • Start Up Voltage, Vdc:
    • 4.5 Max., 5 Vin (nom)
    • 9 Max., 12 Vin (nom)
    • 18 Max., 24 Vin (nom)
    • 36 Max., 28 Vin (nom)
  • Shutdown Voltage, Vdc:
    • 2 Min., 3 Typ., 4 Max., 5 Vin (nom)
    • 6 Min., 7 Typ., 8 Max., 12 Vin (nom)
    • 13 Min., 15 Typ., 17 Max., 24 Vin (nom)
    • 29 Min., 32 Typ., 35 Max., 28 Vin (nom)
  • Start up time, ms
    • 10 Typ., 20 Max., Constant resistive load, Power up, Remote ON/OFF
  • Input Surge Voltage, Vdc
    • 15 Max., 5 Vin (nom)
    • 25 Max., 12 Vin (nom)
    • 50 Max., 24 Vin (nom)
    • 100 Max., 28 Vin (nom)
  • Input Filter: Capacitor type
  • Remote ON/OFF, mA
    • Open or high impedance: Referred to –Vin pin and Ctrl pin, DC-DC ON
    • 2 Min., 3 Typ., 4 Max., Applied current, DC-DC OFF
    • 2.5 Typ., Remote OFF input current

OUTPUT

  • Voltage Accuracy, %: -1 Min., 1 Max.
  • Line Regulation, -0.2 Min., 0.2 Max., Low line to high line at full load
  • Load Regulation, %
    • -1 Min., 1 Max., No load to full load, Single
    • -1 Min., 1 Max., Dual
    • -0.5 Min., 0.5 Max., 10% load to 90% load, Single
    • -0.8 Min., 0.8 Max., Dual
  • Cross regulation, %
    • -5 Min., 5 Max., Asymmetrical load 25%/100% FL, Dual
  • Ripple and noise, mVp-p (Measured by 20MHz bandwidth)
    • 50 Typ., 5Vout
    • 50 Typ., 9Vout
    • 50 Typ., 12Vout
    • 50 Typ., 15Vout
    • 75 Typ., 24Vout
    • 75 Typ., ±12Vout
    • 75 Typ., ±15Vout
  • Temperature coefficient, %/ºC: -0.02 Min., 0.02 Max.
  • Transient response recovery time, μs: 500 Typ., 25% load step change
  • Overvoltage Protection, Vdc
    • 6 Min., 8 Max., 5Vout
    • 10 Min., 14 Max., 9Vout
    • 13 Min., 19 Max., 12Vout
    • 16 Min., 22 Max., 15Vout
    • 25 Min., 35 Max., 24Vout
  • Short Circuit Protection: Continuous, automatic recovery

GENERAL SPECIFICATIONS

  • Isolation Voltage, Vac:
    • 1 minute, reinforced insulation for 250 Vac working voltage, 5000 Min.
  • Isolation capacitance, pF: 16 Typ., 20 Max.
  • Leakage currect, μA: 240 Vac, 60 Hz, 2 Max.
  • Switching frequency, kHz: 100 Min.
  • Clearance/creepage, mm: 8 Min.

ENVIRONMENTAL SPECIFICATIONS

  • Operating ambient temperature, ºC
    • With derating: -40 Min.+105 Max.
  • Maximum case temperature, ºC: +105 Max.
  • Storage temperature range, ºC: -55 Min., +125 Max.
  • Operating altitude, m: 5000 Max.
  • Thermal shock: MIL-STD-810-F
  • Shock: MIL-STD-810-F
  • Vibration: MIL-STD-810-F
  • Relative Humidity: 5% to 95% RH
  • Load-free reflow solder process:
    • SMD type only: IPC J-STD-020E
    • SMD type only: IPC J-STD-033C, Level 2

PHYSICAL SPECIFICATIONS

  • Design Meet Safety Standard: EN/IEC/ANSI/AAMI ES60601-1, UL:E360199, EN/IEC/UL 60950-1, 62368-1, UL:E193009, CB:UL(Demko)
  • Case Material: Non-conductive black plastic
  • Base Material: Non-conductive black plastic
  • Potting Material: Silicone, (UL94 V-0)
  • Weight: 60g (2.11oz)
  • Dimensions:
    • 0.95” × 0.57” × 0.40” (24.3 × 14.4 × 10.2 mm), SMD Type
    • 0.95” × 0.57” × 0.41”(24.3 × 14.4 × 10.5 mm), DIP Type
  • Weight: 7g (0.24oz)
  • MTBF: 5.041 × 106 hrs , MIL-HDBK-217F, Full load

EMC SPECIFICATIONS

  • EMI: EN55011, EN55032 and FCC Part 18, With external components, Class A, Class B
  • ESD: EN61000-4-2, Air ±15KV and Contact ±8KV, Perf. Criteria A
  • 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, 10 Vr.m.s, Perf. Criteria A
  • Power Frequency Magnetic Field: EN61000-4-8, 100 A/m continuous; 1000 A/m 1 second, Perf. Criteria A
Input Range
(Vdc)
Output Voltage
(Vdc)
Output Current at Full Load
(mA)
Input Current at No Load
(mA)
Efficiency
(%)
Max. Capacitor Load
(μF)
Model Number
4.5 - 12 5 700 70 77 1470 MTWA4-5S5
4.5 - 12 9 389 70 78 680 MTWA4-5S9
4.5 - 12 12 292 70 82 470 MTWA4-5S12
4.5 - 12 15 234 90 82 330 MTWA4-5S15
4.5 - 12 24 146 90 82 170 MTWA4-5S24
9 - 18 5 700 40 79 1470 MTWA4-12S5
9 - 18 9 389 40 79 680 MTWA4-12S9
9 - 18 12 292 45 82 470 MTWA4-12S12
9 - 18 15 234 45 82 330 MTWA4-12S15
9 - 18 24 146 50 82 170 MTWA4-12S24
18 - 36 5 700 25 79 1470 MTWA4-24S5
18 - 36 9 389 25 80 680 MTWA4-24S9
18 - 36 12 292 25 83 470 MTWA4-24S12
18 - 36 15 234 25 83 330 MTWA4-24S15
18 - 36 24 146 30 82 170 MTWA4-24S24
36 - 75 5 700 12 79 1470  MTWA4-48S5
36 - 75 9 389 12  80  680  MTWA4-48S9
36 - 75 12 292  13  82 470  MTWA4-48S12
36 - 75 15 234 13  82  330  MTWA4-48S15
36 - 75 24 146 13  82  170  MTWA4-48S24
4.5 - 12 ±12 ±146 90 82 ±220 MTWA4-5-12
4.5 - 12 ±15 ±117 95  81  ±160 MTWA4-5-15
9 - 18 ±12 ±146 50 82 ±220 MTWA4-12-12
9 - 18 ±15 ±117 50 82 ±160 MTWA4-12-15
18 - 36 ±12 ±146 30 82 ±220 MTWA4-24-12
18 - 36 ±15 ±117 30 82 ±160 MTWA4-24-15
36 - 75 ±12 ±146 13 82 ±220 MTWA4-48-12
36 - 75 ±15 ±117 13 82 ±160 MTWA4-48-15