поискавой системы для электроныых деталей |
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SI-8000GL датащи(PDF) 2 Page - Sanken electric |
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SI-8000GL датащи(HTML) 2 Page - Sanken electric |
2 / 2 page 39 ICs SI-8000GL Series ■External Dimensions (DIP8) (Unit: mm) ■Block Diagram CE/SS UVLO OCP P.REG OSC PWM LOGIC CE/SS TSD Reg Comp GND 1V Boot REG DRIVE BS SWOUT VREF VIN + - + - Amp Pin Assignment 1. GND 2. CE/SS 3. Reg 4. SWOUT 5. VIN 6. B.S 7. Comp 8. VREF Plastic Mold Package Type Flammability: UL 94V-0 Product Mass: Approx. 0.49 g SI-8010GL 7 8 2 1 5 4 6 3 9.4±0.3 0.5±0.1 0° to 15° 1.0 +0.3 -0.05 1.5 +0.3 -0.05 0.25+0.1 -0.05 2.54 7.6 0.25 M 0.89 TYP 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 –25 0 25 50 75 100 125 Ambient Temperature Ta (°C) j-a:100°C/W θ ■Ta-PD Characteristics Note 1: The efficiency depends on the input volt- age and the output current. Therefore, ob- tain the value from the efficiency graph and substitute the percentage in the formula above. Note 2: Thermal design for D1 must be considered separately. VO : Output voltage VIN : Input voltage IO : Output current ηχ : Efficiency VF : Diode D1 forward voltage RK16···0.4V(IO=1A) ■Typical Connection Diagram C1: 220µF/63V C2: 470µF/25V C3: 0.1µF C4: 1000pF C5: 0.1µF C6: 0.047µF C7: 0.1µF Diode D1 • Be sure to use a Schottky-barrier diode as D1. If other diodes like fast recovery diodes are used, IC may be destroyed because of the reverse voltage generated by the recovery voltage or ON voltage. Choke coil L1 • If the winding resistance of the choke coil is too high, the efficiency may drop below the rated value. • As the overcurrent protection starting current is approx. 2.5 A, take care concerning heat radiation from the choke coil caused by magnetic saturation due to overload or short-circuited load. Capacitor C1, C2 •As large ripple currents flow through C1 and C2, use high-frequency and low-impedance capacitors aiming for switching-mode-power-supply use. Especially when the impedance of C2 is high, the switching waveform may become abnormal at low temperatures. For C2, do not use a capacitor with an extremely low equivalent series resistance (ESR) such as an OS capacitor or a tantalum capacitor, which may cause an abnormal oscillation. Resistors R2, R3 • R2 and R3 are the resistors to set the output voltage. Set their values so that IREF becomes approx. 2 mA. Obtain R2 and R3 values by the following formula above. * To create the optimum operating conditions, place the components as close as possible to each other. SI-8010GL Reg CE/SS 3 2 VIN SWOUT VREF VIN GND V0 GND 5 C5 Comp 7 6 C6 C3 D1 L1 R2 R3 IREF GND B.S SI-8010GL 1 8 4 R1 C4 C1 C7 + C2 C8 + C8: 0.1µF R1: 47Ω L1: 47µH D1: RK16 (Sanken) PD=VO • IO 100 –1 –VF • IO 1– VO ηχ VIN R2= (VOUT–VREF) = (VOUT–1) (Ω), R3 = VREF = 1 500(Ω) IREF 2×10–3 IREF 2×10–3 = . . |
Аналогичный номер детали - SI-8000GL_11 |
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Аналогичное описание - SI-8000GL_11 |
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