 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| A_LT-2W & B_LT-2W Series 2W, FIXED INPUT, ISOLATED & UNREGULATED, DUAL/SINGLE OUTPUT, SMD, DC-DC CONVERTER FEATURES High Efficiency up to 85% SMD Package 1KVDC Isolation Temperature Range: -40C to +85C Internal SMD Construction No Heat sink Required No External Component Required Industry Standard Pinout RoHS Compliance multi-country patent protection Output RoHS PRODUCT PROGRAM Input Part Number A0505LT-2W A0509LT-2W A0512LT-2W A0515LT-2W B0505LT-2W B0509LT-2W B0512LT-2W B0515LT-2W A1205LT-2W 5 4.5-5.5 Voltage (VDC) Nominal Range Voltage (VDC) 5 9 12 15 5 9 12 15 5 9 12 12 10.8-13.2 15 5 9 12 15 Current (mA) Max 200 111 83 67 400 222 167 133 200 111 83 67 400 222 167 133 Min 20 11 8 7 40 23 17 14 20 11 8 7 40 23 17 14 82 83 84 82 80 82 84 84 83 84 84 85 82 83 85 85 Efficiency (%, Typ) APPLICATIONS The A_LT-2W & B_LT-2W Series are specially designed for applications where a group of polar power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. These products apply to: 1) Where the voltage of the input power supply is fixed (voltage variation 10%); 2) Where isolation is necessary between input and output (isolation voltage 1000VDC); 3) Where the regulation of the output voltage and the output ripple noise are not demanding. Such as: purely digital circuits, ordinary low frequency analog circuits, and IGBT power device driving circuits. A1209LT-2W A1212LT-2W A1215LT-2W B1205LT-2W B1209LT-2W B1212LT-2W B1215LT-2W OUTPUT SPECIFICATIONS Item Output power Line regulation For Vin change of 1% 10% to 100% load (5V output) Load regulation 10% to 100% load (9V output) 10% to 100% load (12V output) 10% to 100% load (15V output) Output voltage accuracy Temperature drift Ripple & Noise* Switching frequency 100% full load 20MHz Bandwidth Full load, nominal input 75 70 12.8 8.3 6.8 6.3 Test Conditions Min 0.2 Typ Max 2 1.2 15 15 15 15 0.03 150 %/C mVp-p KHz % Units W See tolerance envelope graph MODEL SELECTION A0505LT-2W Rated Power Package Style Output Vol tage Input Voltage Product Series *Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing of Power Converter Section, application notes. COMMON SPECIFICATION Item Storage humidity Operating temperature Storage temperature Lead temperature -40 -55 15 1.5mm from case for 10 seconds Test Conditions Min Typ Max 95 85 125 25 260 Free air convection 1 Plastic(UL94-V0) 3500 2.1 K hours g s C Units % MORNSUN Science& Technology co.,Ltd. Address: 2th floor 6th building, Hangzhou Industrial District, Guangzhou, China Tel: 86-20-38601850 Fax: 86-20-38601272 http://www.mornsun-power.com Temp. rise at full load Cooling Short circuit protection* Case material MTBF Weight *Supply voltage must be discontinued at the end of short circuit duration. Note: 1.All specifications measured at TA=25C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2.See below recommended circuits for more details. MORNSUN reserves the copyright Specifications subject to change without notice. A_LT-2W & B_LT-2W A/1-2008 Page 1 of 2 ISOLATION CHARACTERISTICS Item Isolation voltage Test Conditions Tested for 1 minute and 1mA max Min 1000 1000 Typ Max Units VDC M Overload Protection Under norm al operating conditions, the output circuit of these products has no protection against overload. The simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to the circuit. Isolation resistance Test at 500VDC TYPICAL CHARACTERISTICS Recommended testing and application circuit If you want to further decrease the input/output ripple, an "LC" filtering network may be connected to the input and output ends of the DC/DC converter, see (Figure 1). Dual Out put Vin Cin L L +Vo Cout DC DC Operating Temp.(oC) GND Singl e Output L L Cout L 0V -Vo +Vo RECOMMENDED REFLOW SOLDERING PROFILE 250 Vin Cin Temperature ( C ) 200 150 100 50 0 P eak.Temp 260 C 10 S ec Max 220 C DC DC (Figure 1) Cout GND 0V It should also be noted that the inductance and the 90 S ec M ax ( > 220 C ) frequency of the "LC" filtering network should be staggered with the DC/DC frequency to avoid mutual interference. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too big, a startup problem might arise. For every channel of output, provided the safe and reliable operation is ensured, the recommended capacitance of its filter capacitor sees (Table 1). A 0.2 5 (0.010) Ti me (sec.) OUTLINE DIMENSIONS & PIN CONNECTIONS First Angle Projection 6.00 (0.236) 5.75 (0.226) 2.75 (0.108) EXTERNAL CAPACITOR TABLE (TABLE 1) 1.27 (0.050) 2.54 (0.100) Vin (VDC) 5 12 - Cin (uF) 4.7 2.2 - 17.78(0.700) 12.70(0.500) 14 13 12 10 9 8 RECOMMENDED FOOTPRINT Top view,grid:2.54*2.54mm(0.1*0.1inch) Dual output & Single Output 14 13 12 10 9 8 Single Vout (VDC) 5 9 12 15 Cout (uF) 10 4.7 2.2 1 Dual Vout (VDC) 5 9 12 15 Cout (uF) 4.7 2.2 1 0.47 123 567 2.00 (0.079) It's not recommended to connect any external capacitor in the application field with less than 0.5 watt output. 1 23 567 17.78 (0.700) A 0.5 (0.020) 1.00 (0.039) FOOTPRINT DETAILS Singles Pin Duals 1 GND GND 2 Vin Vin 5 NC -Vo 6 0V 0V 7 +Vo +Vo 10 NC -Vo Others NC NC NC:No Connection Output Voltage Regulation and Over-voltage Protection Circuit The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat protection that is connected to the input or output end in series (Figure 2). Du a l O u tp u t Vin GND S in g l e O u tp u t Vin GND REG REG +Vout REG REG +Vout 0V REG -Vout 5.0 MAX 1.30 0.13 (0.052 0.005) Note: Unit:mm(inch) Pin section:0.60*0.25mm(0.024*0.010inch) Pin tolerances: 0.10mm( 0.004inch) General tolerances: 0.25mm( 0.010inch) DC DC APPLICATION NOTE Requirement on output load To ensure this module can operate efficiently and reliably, During operation, the minimum output load is not less than 10% of the full load, and that this product should never be operated under no load! If the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, or use our company's products with a lower rated output power (A_T -1W/B_T-1W series). DC DC 0V (Figure 2) No parallel connection or plug and play. MORNSUN reserves the copyright Specifications subject to change without notice. A_LT-2W & B_LT-2W A/1-2008 Page 2 of 2 |
Price & Availability of A1215LT-2W
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |