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)： 49/68頁
文件大?。?/td> 647K
代理商： S-8324
48
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:
What about the soft-start mechanism of the S-8323/24/27/28
Answer:
The soft-start function has been added to prevent overshoot of the output voltage when the boosting
operation is initiated, and to suppress the rush current during voltage increases. The following are
among the soft-start methods available:
Placing a current limit on the switching current
Slowly increasing the reference voltage
Limiting on-duty at the start
This IC adopts method above.
The waveforms observed when the S-8327B30 is soft-started are shown below. As reference voltage
VREF within the measurement circuit is increased slowly from 0 V, output voltage VOUT also slowly
increases. [Vref indicated with dotted lines in the waveform is the value obtained when reference
voltage VREF is converted to an output voltage VOUT level (Vref = VREF x (R1 + R2)
÷
R2).]
VOUT increases to close to VIN immediately after the power is switched on, as the current is supplied
from VIN to VOUT via L and SD of the measurement circuit. Moreover, the soft-start function
implemented by an output-power regulation circuit allows an extended soft-start time to be ensured
when a large external Cc is selected.
(Refer to FAQ No. 11S8323007.)
Measurement Circuit: S-8327B30 VIN = 0
→
1.8 V IOUT = 1 mA
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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

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(jìn)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(jìn)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

*
*
*