參數(shù)資料
型號： L6730TR
廠商： 意法半導體
英文描述： Adjustable step-down controller with synchronous rectification
中文描述： 可調(diào)式降壓同步整流控制器
文件頁數(shù)： 13/52頁
文件大?。?/td> 1370K
代理商： L6730TR
L6730 - L6730B
Device description
13/52
5
Device description
5.1
Oscillator
The switching frequency is internally fixed to 400kHz. The internal oscillator generates the
triangular waveform for the PWM charging and discharging an internal capacitor (F
SW
=
400kHz). This current can be varied using an external resistor (R
T
) connected between OSC
pin and GND or V
CCDR
in order to change the switching frequency. Since the OSC pin is
maintained at fixed voltage (typ. 1.2V), the frequency is increased (or decreased) proportionally
to the current sunk (sourced) from (into) the pin. In particular by connecting R
T
versus GND the
frequency is increased (current is sunk from the pin), according to the following relationship:
Connecting R
T
to V
CCDR
reduces the frequency (current is sourced into the pin), according to
the following relationship:
Switching frequency variation vs. R
T
is shown in
Figure 3.
.
Figure 3.
Switching frequency variation versus RT.
)
(
10
K
88
.
R
400
6
+
=
KHz
Fsw
OSC
(1)
)
(
10
K
01
.
R
400
7
=
KHz
Fsw
OSC
(2)
Switching Frequency Variation
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
Rosc connected to GND
Rosc connected to Vccdr
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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 供應商設備封裝: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
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