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參數(shù)資料
| 型號： | FSQ0565RQ |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.36 A SWITCHING CONTROLLER, 75.8 kHz SWITCHING FREQ-MAX, ZFM6 |
| 封裝： | ROHS COMPLIANT, TO-220F, 6 PIN |
| 文件頁數(shù)： | 16/23頁 |
| 文件大?。?/td> | 2856K |
| 代理商： | FSQ0565RQ |
General Release Specification
Functional Pin Description
MC68HC805K3 — Rev. 1.0
MOTOROLA
General Description
23
1.7.2.4 3-Pin RC Oscillator
Another low cost, but more accurate, type of RC oscillator is the 3-pin
configuration utilizing the PB1/OSC3 pin. With this option, a resistor
must be connected between the OSC1 and OSC2 pins and a capacitor
must be connected between the OSC1 and PB1/OSC3 pins, as shown
in Figure 1-3(c). This 3-pin RC oscillator is more accurate than the 2-pin
RC oscillator with respect to temperature, supply voltage, and/or device
processing variations. The signal on the OSC2 and PB1/OSC3 pins is a
square wave and the signal on the OSC1 pin approximates a triangular
wave.
Selection of the 3-bit RC oscillator requires programming two bits in the
mask option register located at $0012. Bit 5 ("RC"), when programmed,
enables the RC oscillator. Bit 6 ("Pin 3"), when programmed along with
bit 5, selects the 3-pin oscillator configuration.
The 3-pin RC oscillator is optimized for operation at 500 kHz. This
oscillator can be used at higher or lower frequencies with degraded
accuracy over temperature, supply voltage, and/or device processing
variations. The internal startup resistor of approximately 2 M
is not
connected between OSC1 and OSC2 when the 3-pin RC oscillator mask
option register bit is selected. The typical external components for a 500-
kHz oscillator are a 20-k
resistor and a 25- to 30-pF capacitor.
NOTE:
Capacitors used with the RC oscillators should have minimal leakage.
Electrolytic or tantalum capacitors should not be used because they
degrade the temperature performance of the oscillator due to excessive
variation in their leakage.
1.7.2.5 External Clock
An external clock from another CMOS-compatible device can be
connected to the OSC1 input, with the OSC2 input not connected, as
shown in Figure 1-3(d). This configuration is possible regardless of
whether the oscillator is set up for crystal/ceramic resonator, 2-pin RC,
or 3-pin RC operation. However, if the 3-pin RC oscillator is selected, the
PB1/OSC3 pin also must be left unconnected.
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| FSQ0565RSLDTU | 功能描述:開關變換器、穩(wěn)壓器與控制器 SMPS Power switch (QRC) 5A 650V RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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