參數(shù)資料
型號： L6730TR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封裝： HTSSOP-20
文件頁數(shù)： 6/52頁
文件大?。?/td> 1569K
代理商： L6730TR
Device description
L6730 - L6730B
14/52
Doc ID 11938 Rev 3
5
Device description
5.1
Oscillator
The switching frequency is internally fixed to 400 kHz. The internal oscillator generates the
triangular waveform for the PWM charging and discharging an internal capacitor (FSW = 400
kHz). This current can be varied using an external resistor (RT) connected between OSC pin
and GND or VCCDR in order to change the switching frequency. Since the OSC pin is
maintained at fixed voltage (typ. 1.2 V), the frequency is increased (or decreased)
proportionally to the current sunk (sourced) from (into) the pin. In particular by connecting
RT versus GND the frequency is increased (current is sunk from the pin), according to the
following relationship:
Connecting RT to VCCDR reduces the frequency (current is sourced into the pin), according
to the following relationship:
Switching frequency variation vs. RT is shown in Figure 4.
Figure 4.
Switching frequency variation versus RT
)
(
10
88
.
9
400
6
Ω
+
=
K
R
KHz
Fsw
OSC
(1)
)
(
10
01
.
3
400
7
Ω
=
K
R
KHz
Fsw
OSC
(2)
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
0
100
200 300
400 500 600
700 800
900 1000
Rosc (KOHM)
F
s
w
(
KHz)
Rosc connected to GND
Rosc connected to Vccdr
相關(guān)PDF資料
PDF描述
L6732CTR 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6732 SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6732TR SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6788ATR 3-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40
L6788A 3-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6731B 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Adj. Step-Down w/ Synch Rectification 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(guān)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
L6731BTR 功能描述:IC CTRLR ADJ STEP DOWN 16-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
L6731D 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
L6731DTR 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
L6732 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*