參數(shù)資料
型號： S-8324
廠商： Seiko Instruments Inc.
英文描述： CMOS PWM/PFM-Control Step-Up Switching Regulator(CMOS PWM/PFM控制步升開關(guān)穩(wěn)壓器)
中文描述： 的CMOS PWM / PFM切換，控制升壓型開關(guān)穩(wěn)壓器的CMOS（PWM / PFM切換控制步升開關(guān)穩(wěn)壓器）
文件頁數(shù)： 55/68頁
文件大小： 647K
代理商： S-8324
54
Collection of Product FAQs
Author: Tachibana Midori
Date: 98/11/12 (Thursday) 10:17 (Modified:)
<Information level>
B:
For Distri & Rep (Printing N.G.)
Index:
B: Technical
<Product>
Division name: 01 IC
Category 1:
11 Power Supply
Category 2:
4. Switching Regulators
Cal No.:
S-8323/24/27/28
Related Documents:
Question:
How can the duty ratio in the boosting motion of a 100-kHz product be calculated
Answer:
Basically, the duty ratio at the time of the boosting motion varies depending on such conditions as the
input voltage VIN, output voltage VOUT, load current IOUT, coil value L, oscillation frequency fosc, and
Schottky diode voltage VF. If these conditions are known, the duty ratio can be roughly computed using
the following equation:
fosc
×
L
=
Duty
L)
÷
fosc
÷
VIN)
VF
(VOUT
×
IOUT
×
(2
×
VIN
÷
(The above equation can be derived from Formulas (4) and (17) in the Data Book and Duty = ton x
fosc.)
However, it is essential that the duty value given by the above equation be smaller than the duty value
computed below (non-continuous mode).
Duty
≤
(VOUT
=
duty
VIN))
VF
(VOUT
+
(VIN
÷
VIN)
VF
<Remarks>
FAQ No.: 11S8323010
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相關(guān)PDF資料
PDF描述
S-8328 CMOS PWM/PFM-Control Step-Up Switching Regulator(CMOS PWM/PFM控制步升開關(guān)穩(wěn)壓器)
S-8330 Step-Up Switching Regulator For LCD Bias Supply(用于LCD偏置電源的步升開關(guān)穩(wěn)壓器)
S-8331 Step-Up Switching Regulator For LCD Bias Supply(用于LCD偏置電源的步升開關(guān)穩(wěn)壓器)
S-8340 PWM Control High-Frequency Step-Up Switching Regulator-Controllers(PWM控制，高頻步升開關(guān)穩(wěn)壓器-控制器)
S-8340A PWM Control High-Frequency Step-Up Switching Regulator-Controllers(PWM控制，高頻步升開關(guān)穩(wěn)壓器-控制器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S8324A10-8 制造商: 功能描述: 制造商:undefined 功能描述:
S-8324A27MC-EOH-T2 功能描述:DC/DC 開關(guān)控制器 SOT-23-5 2.7V 17uA 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(fēng)格: 封裝 / 箱體:CPAK
S-8324A30MC-EOK-T2 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 REORD 628-8354H30MC 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(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
S-8324A33MC-EON-T2 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 SOT-23-5 3.3V 17uA 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(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
S-8324A50MC-EPE-T2 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 SOT-23-5 5.0V 17uA 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(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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