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参数资料
| 型号： | LTC6992HS6-4#TRMPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.02 A SWITCHING CONTROLLER, PDSO6 |
| 封装： | 1 MM HEIGHT, LEAD FREE, PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件页数： | 14/34页 |
| 文件大小： | 2577K |
| 代理商： | LTC6992HS6-4#TRMPBF |
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LTC6992-1/LTC6992-2/
LTC6992-3/LTC6992-4
21
69921234fb
APPLICATIONS INFORMATION
ISET Extremes (Master Oscillator Frequency Extremes)
When operating with ISET outside of the recommended
1.25μA to 20μA range, the master oscillator operates
outside of the 62.5kHz to 1MHz range in which it is most
accurate.
The oscillator will still function with reduced accuracy for
ISET<1.25μA.Atapproximately500nA,theoscillatoroutput
will be frozen in its current state. The output could halt in
a high or low state. This avoids introducing short pulses
while frequency modulating a very low frequency output.
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 has a wide PWM bandwith, making it suitable
for a variety of feedback applications. Figure 10 shows that
the frequency response is flat for modulation frequencies
up to nearly 1/10 of the output frequency. Beyond that
point, some peaking may occur (depending on NDIV and
average duty cycle setting).
Duty cycle settling time depends on the master oscillator
frequency. Following a ±80mV step change in VMOD, the
duty cycle takes approximately eight master clock cycles
(8 tMASTER) to settle to within 1% of the final value.
Examples are shown in Figures 11a and 11b.
Figure 10. PWM Frequency Response
Figure 11a. PWM Settling Time, 25% Duty Cycle
Figure 11b. PWM Settling Time, 50% Duty Cycle
fMOD/fOUT (Hz/Hz)
0.001
ΔD(f
MOD
)/
ΔD(0Hz)
(dB)
10
5
–5
0
–10
–15
–20
0.01
6992 F10
1
0.1
÷1, 50%
÷1, 80%
÷16
÷4, 50%
÷4, 15%
VMOD
0.1V/DIV
OUT
2V/DIV
DUTY CYCLE
5% DIV
V+ = 3.3V
DIVCODE = 0
RSET = 200k
VMOD = 0.3V ±40mV
10μs/DIV
6992 F11a
VMOD
0.1V/DIV
OUT
2V/DIV
DUTY CYCLE
5% DIV
V+ = 3.3V
DIVCODE = 0
RSET = 200k
VMOD = 0.5V ±40mV
10μs/DIV
6992 F11b
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC6992HS6-4-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:TimerBlox Voltage-Controlled Pulse Width Modulator (PWM) |
| LTC6992IDCB-1#PBF | 制造商:Linear Technology 功能描述:Bulk |
| LTC6992IDCB-1#TRMPBF | 功能描述:IC OSC SILICON 1MHZ 6-DFN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 可编程计时器和振荡器 系列:TimerBlox® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:45 系列:- 类型:温度 - 补偿晶体振荡器（TCXO） 计数:- 频率:25MHz 电源电压:3.135 V ~ 3.465 V 电流 - 电源:1.5mA 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 包装:管件 供应商设备封装:16-SOIC W 安装类型:表面贴装 |
| LTC6992IDCB-1#TRPBF | 功能描述:IC OSC SILICON 1MHZ 6-DFN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 可编程计时器和振荡器 系列:TimerBlox® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:45 系列:- 类型:温度 - 补偿晶体振荡器（TCXO） 计数:- 频率:25MHz 电源电压:3.135 V ~ 3.465 V 电流 - 电源:1.5mA 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 包装:管件 供应商设备封装:16-SOIC W 安装类型:表面贴装 |
| LTC6992IDCB-2#PBF | 制造商:Linear Technology 功能描述: |
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