參數(shù)資料
型號: LTC6992IDCB6-3#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, PDSO6
封裝: 2 X 3 MM, LEAD FREE, PLASTIC, MO-229TBD, DFN-6
文件頁數(shù): 14/32頁
文件大小: 322K
代理商: LTC6992IDCB6-3#PBF
LTC6992-1/LTC6992-2/
LTC6992-3/LTC6992-4
21
69921234p
APPLICATIONS INFORMATION
At the other extreme, it is not recommended to operate
the master oscillator beyond 2MHz because the accuracy
of the DIV pin ADC will suffer.
Pulse Width Modulation Bandwidth and Settling Time
The LTC6992 will respond to changes in VMOD up to a –3dB
bandwidth of TBD (see Figure 10). This makes it easy to
stabilize a feedback loop around the LTC6992, since it
does not introduce a low frequency pole.
Duty cycle settling time depends on the master oscillator
frequency. Following a ±100mV step change in VMOD, the
duty cycle takes approximately TBD master clock cycles
(TBD tMASTER) to settle to within 1% of the final value.
An example is shown in Figure 11.
Frequency Modulation and Settling Time
In addition to pulse-width modulation, the LTC6992 can
be frequency modulated by varying ISET. The LTC6992
will respond to changes in ISET up to a –3dB bandwidth
of TBD fOUT (see Figure 12).
Following a 2x or 0.5x step change in ISET, the output
frequency takes approximately TBD master clock cycles
(TBD tMASTER) to settle to within 1% of the final value.
An example is shown in Figure 13.
Figure 13. Frequency Change Settling Time
PLACEHOLDER
Figure 10. PWM Frequency Response
Figure 11. PWM Settling Time
Figure 12. Frequency Modulation Bandwidth
PLACEHOLDER
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