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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LD24-XX-XXX Datenblatt(PDF) 2 Page - MicroPower Direct, LLC |
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LD24-XX-XXX Datenblatt(HTML) 2 Page - MicroPower Direct, LLC |
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2 / 4 page  Model Selection Guide 292 Page Street Ste D Stoughton, MA 02072 • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: sales@micropowerdirect.com www.micropowerdirect.com Typical Connection: DC/DC Input Model Number Input Output Maximum Power (W) Ripple & Noise (mV P-P, Max) Efficiency (%, Max) Package Voltage (VDC) Voltage (VDC) Current Range Range Max (mA) Accuracy (%) LD24-04-150 7.0 - 30.0 2.0 - 28.0 150 ±10 4.2 200 95 14 -Pin DIP LD24-07-250 7.0 - 30.0 2.0 - 28.0 250 ±8 7 200 95 14 -Pin DIP LD24-08-300 7.0 - 30.0 2.0 - 28.0 300 ±6 8 200 95 14 -Pin DIP LD24-08-350 7.0 - 30.0 2.0 - 28.0 350 ±5 8 200 95 14 -Pin DIP LD24-14-500 7.0 - 30.0 2.0 - 28.0 500 ±6 14 250 95 16 -Pin DIP LD24-17-600 7.0 - 30.0 2.0 - 28.0 600 ±7 17 250 95 16 -Pin DIP LD24-20-700 7.0 - 30.0 2.0 - 28.0 700 ±7 20 250 95 16 -Pin DIP LD24-24-1000 7.0 - 30.0 2.0 - 28.0 1,000 ±7 24 300 95 16 -Pin DIP Notes: 1. A reversed power source could damage the unit. 4. The VADJ input should be left open if not used. Grounding VADJ will shut the unit down. Connecting VADJ to VIN may damage the unit. 2. No connection should be made between input ground and the output. 3. These are step-down devices, the maximum output open voltage is equal to the input voltage. 5. Exceeding the specified maximum output power could cause damage to the unit. Typical Connection: AC/DC Input Connection Notes: To comply with EN61000-4-5, a TVS should be installed before the input filter components. A 3.0SMCJ24A or SMCJ24A is recommended. The TVS max clamping voltage (@max peak pulse current VC) must be 40V. Exceeding the maximum input rating could damage the driver. The filter shown (C1, C2 and L1) will help to meet conducted emission requirements. With the addition of the filter, the unit should meet the levels of EN 55015. Connection Notes: This is a distributed (or two-stage) AC connection. In this configuration, the AC line in (90 to 264 VAC) is connected to the MPM-30D-15IS, a compact 30W AC/DC power supply. The MPM-30D-15IS is connected across its ±15 VDC outputs to provide a tightly regulated 30 VDC output at 1A. The 30 VDC output powers the LED driver. The two stage approach can simplify the safety approval process (most AC/DC power supplies on the market are approved to EN 60950) and may increase design flex- ibility. Besides the output power, other specifications to consider when selecting the input AC/DC supply would include input range, safety approvals, PFC rating (which may be needed for various system energy ratings) and operating temperature range. Note: The output current adjustment circuit shown in both connection diagrams is discussed on page 4. |
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