- 您现在的位置：买卖IC网 > PDF目录14063 > LT1317IS8#TRPBF (Linear Technology)IC REG BOOST ADJ 0.5A 8SOIC PDF资料下载
参数资料
| 型号： | LT1317IS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.5A 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.24 V ~ 30 V |
| 输入电压： | 1.5 V ~ 12 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 600kHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
LT1317/LT1317B
APPLICATIO N S I N FOR M ATIO N
FREQUENCY COMPENSATION
V IN
10 μ H
MBR0520L
V OUT
The LT1317 has an external compensation pin (V C ) which
allows the frequency response to be optimized for the
circuit configuration. In most cases, the values used in
2V
+
47 μ F
V IN
LT1317
SHDN
SW
FB
1M
+
47 μ F
3.3V
15 ?
2W
Figure 1 will work. Some circuits may need additional
compensation and a simple trial and error method for
V C
GND
604k
determining the necessary component values is given.
Figure 6 shows the test setup. A load step is applied and
C C2
100pF
R
C
50 ?
the resulting output voltage waveform is observed. Fig-
ures 7 through 10 detail the response for various values of
R and C in the compensation network. The circuit of
Figure 6. Frequency Response Test Setup
1317 F06
Figure 7 starts with a large C and small R giving a highly
overdamped system. This system will always be stable but
the output voltage displays a long settling time of >5ms.
Figure 8’s circuit has reduced C giving a shorter settling
time but still overdamped. Figure 9 shows the results
when C is reduced to the point where the system becomes
underdamped. The output voltage responds quickly
( ≈ 200 μ s to 300 μ s) but some ringing exists. Figure 10 has
V OUT
100mV/DIV
AC COUPLED
I LOAD
2mA TO
200mA
optimum R and C values giving the best possible settling
time with adequate phase margin.
An additional 100pF capacitor (C C2 ) is connected to the V C
pin and is necessary if the LT1317 is operated near current
limit. Also, C C2 should be present when higher ESR output
capacitors are used.
V OUT
100mV/DIV
AC COUPLED
I LOAD
2mA TO
200mA
V OUT
100mV/DIV
AC COUPLED
I LOAD
2mA TO
200mA
5ms/DIV
Figure 7. With C = 56nF and R = 33k,
the System is Highly Overdamped.
1ms/DIV
1317 F07
1317 F09
V OUT
100mV/DIV
AC COUPLED
I LOAD
2mA TO
200mA
5ms/DIV
Figure 8. Reducing C to 22nF
Speeds Up the Response. (R = 33k)
1ms/DIV
1317 F08
1317 F10
10
Figure 9. Using 680pF for C Results in an
Underdamped System with Ringing. (R = 33k)
Figure 10. 3.3nF and 33k Gives the
Shortest Settling Time with No Ringing.
相关PDF资料 |
PDF描述 |
|---|---|
| LT1317IS8#TR | IC REG BOOST ADJ 0.5A 8SOIC |
| LT1316IS8#TRPBF | IC REG BST FLYBK ADJ 0.5A 8SOIC |
| LT1316IS8#TR | IC REG BST FLYBK ADJ 0.5A 8SOIC |
| LT1576CS8-5#PBF | IC REG BUCK 5V 1.5A 8SOIC |
| LT1576CS8-5 | IC REG BUCK 5V 1.5A 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1319 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Multiple Modulation Standard Infrared Receiver |
| LT1319CS | 功能描述:IC RCVR BUILDING BLOCK IR 16SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,140 系列:AU 类型:收发器 驱动器/接收器数:1/1 规程:CAN 电源电压:5.3 V ~ 27 V 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:管件 其它名称:935267940512AU5790D14AU5790D14-ND |
| LT1320 | 功能描述:PRINTER THERMAL 80MM 24V BENT RoHS:否 类别:计算机，办公室 - 元件，配件 >> 打印机 系列:LT1320 标准包装:1 系列:Thermomark 类型:台式热敏打印机 技术规格:- 其它名称:THERMOMARK S1.1THERMOMARKS1.1 |
| LT1321 | 功能描述:PRINTER THERMAL 80MM 24V CLAM RoHS:否 类别:计算机，办公室 - 元件，配件 >> 打印机 系列:LT1321 标准包装:1 系列:Thermomark 类型:台式热敏打印机 技术规格:- 其它名称:THERMOMARK S1.1THERMOMARKS1.1 |
| LT-1321C | 制造商:Citizen Systems America Corporation 功能描述:Thermal Mechanisms- 80mm - 80 mm/sec - 576 dots - 24V - Clam Shell |
发布紧急采购，3分钟左右您将得到回复。