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)： 65/68頁
文件大?。?/td> 647K
代理商： S-8324
64
Collection of Product FAQs
Author: Tachibana Midori
Date: 98/11/12 (Thursday) 10:17 (Modified: )
<Information level>
A:
Public (Printing O.K.)
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:
In the output-voltage regulator circuit described on the data sheet, how is the power turned off
Answer:
If the rush current does not cause a problem when the power is turned on:
When turning off the power, switch off SWR from VIN.
When the power is turned on (VIN and SWR are connected), a rush current flows at Cout.
GND
EXT
+
VSS
VOUT
Cin
SD
L
Tr1
S-8327/8E
VDD
OUT
VIN
Cout
Figure 1
Internal
circuit
RA
RB
Cc
ON/OFF
Tr2
R1
R2
If the rush current causes a problem when the power is turned on:
When turning off the power, switch off VDD of IC and the GND side of the external resistance.
Two sets of inputs for turning on the power, a positive logic and a negative logic, are required. To
restrict the rush current, increase the capacitance of Cc so that the soft start-up time is prolonged.
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: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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