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參數(shù)資料
| 型號： | LT1307IS8#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.25 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 369K |
| 代理商： | LT1307IS8#TR |
11
LT1307/LT1307B
1307fa
51mA
1mA
IL
5ms/DIV
1307 F11a
VOUT
200mV/DIV
AC COUPLED
Figure 11a. VC Pin Left Unconnected. Output Ripple
Voltage is 300mVP-P Under Load
51mA
1mA
IL
5ms/DIV
1307 F11b
Figure 11b. Inclusion of a 100k/22nF Series RC on VC
Pin Results in Overdamped Stable Response
VOUT
200mV/DIV
AC COUPLED
51mA
1mA
IL
1ms/DIV
1307 F11a
VOUT
200mV/DIV
AC COUPLED
Figure 11c. Reducing C to 2nF Speeds Up Response,
Although Still Overdamped
51mA
1mA
IL
500
s/DIV
1307 F11b
Figure 11d. A 100k/200pF Series RC Shows Some
Underdamping
VOUT
200mV/DIV
AC COUPLED
51mA
1mA
IL
1ms/DIV
1307 F11b
Figure 11e. A 100k/680pF RC Provides Optimum
Settling Time with No Ringing
VOUT
200mV/DIV
AC COUPLED
pole, requiring added C at the VC pin network to prevent
loop oscillation.
Observant readers will notice R has been set to 100k for all
the photos in Figure 11. Usable R values can be found in
the 10k to 500k range, but after too many trips to the
resistor bins, 100k wins.
underdamping. Now settling time is about 300
s.Increas-
ing C to 680pF results in the response shown in Figure 11e.
This response has minimum settling time with no over-
shoot or underdamping.
Converters using a 2-cell input need more capacitance at
the output. This added capacitance moves in the output
APPLICATIO S I FOR ATIO
WU
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| LT1308ACF | 功能描述:IC REG BOOST 5V 1A 14TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
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