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| AK5340-VS资料 | |
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AK5340-VS PDF Download |
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File Size : 116 KB
Manufacturer:AKM Description:SS/TRACK (Pin 9) - Soft-start and tracking pin. This pin is internally connected to the non-inverting input of the error amplifier during soft-start, and in fact any time the SS/ TRACK pin voltage happens to be below the internal refer- ence voltage. For the basic soft-start function, a capacitor of minimum value 1nF is connected from this pin to ground. To track the rising ramp of another power supplys output, con- nect a resistor divider from the output of that supply to this pin as described in Application Information. FB (Pin 10) - Feedback pin. This is the inverting input of the error amplifier, which is used for sensing the output voltage and compensating the control loop. FREQ (Pin 11) - Frequency adjust pin. The switching fre- quency is set by connecting a resistor of suitable value between this pin and ground. The equation for calculating the exact value is provided in Application Information, but some typical values (rounded up to the nearest standard values) are 324 kΩ for 100 kHz, 97.6 kΩ for 300 kHz, 56.2 kΩ for 500 kHz, 24.9 kΩ for 1 MHz. SD (Pin 12) - IC shutdown pin. Pull this pin to VCC to ensure the IC is enabled. Connect to ground to disable the IC. Under shutdown, both high-side and low-side drives are off. This pin also features a precision threshold for power supply sequencing purposes, as well as a low threshold to ensure minimal quiescent current. VREF (Pin 13) - External reference. This goes to the non- inverting input of the error amplifier. Any desired reference voltage between 0.5V to 1.5V can be connected to this pin (with appropriate filtering if necessary). HG (Pin 14) - High-gate drive pin. This is the gate drive for the high-side N-channel MOSFET. This signal is interlocked with LG (Pin 2) to avoid shoot-through. |
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| 1PCS | 100PCS | 1K | 10K | ||
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型 号：AK5340-VS 厂 家：AKM 封 装：SOP 批 号：07+ 数 量：1135 说 明：100%真实库存，原装，部分现货 |
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运 费： 所在地：深圳 新旧程度： |
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