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LA6538T データシート(PDF) 3 Page - Sanyo Semicon Device |
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LA6538T データシート(HTML) 3 Page - Sanyo Semicon Device |
3 / 6 page No. 6518-3/6 LA6538T Pin Assignment IN+ 1 2 3 4 HB 8 7 6 5 IN-- OUT1 FG VCC OUT2 GND Top view LA6538T ILA00206 Sample Application Circuit IN+ HB IN-- FG R2 R2 OUT1 OUT2 Di VCC VCC Cr *1 *2 R1 GND ILA00207 ILA00208 H *3 *4 H Notes: 1. When the diode Di is used to prevent device destruction from reverse connection, the capacitor Cr must be inserted to assure a path for regenerative currents. Similarly, if there are no nearby capacitors on the fan power supply line, the capacitor Cr is also required to increase reliability. 2. The Hall element is biased at a constant voltage of approximately 2.1 V from the HB pin. Thus the LA6538T provides a stable Hall output with excellent temperature characteristics. The resistor R1 adjusts the Hall output amplitude. The LA6538T implements linear drive by amplifying the Hall output and applying voltage control to the motor coils. Startup characteristics and efficiency are improved by using a higher Hall device output. However, the motor can be made to operate more quietly by adjusting the Hall device. 3. If the Hall bias is taken from VCC, bias the Hall device at 1/2 VCC as shown in the figure. 4. This pin must be left open if unused. Devices on the printed circuit board Block Diagram 180 k Ω 500 Ω ILA00209 HB FG IN+ IN-- GND OUT1 OUT2 VCC H 180 k Ω 500 Ω 2.1 VRG |
同様の部品番号 - LA6538T |
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同様の説明 - LA6538T |
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