參數(shù)資料
型號: S-8328
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): 61/68頁
文件大?。?/td> 647K
代理商: S-8328
60
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:
At start-up of S-8323~4, a large peak current flows through the CONT terminal. Is it possible that the
peak current could cause a loss that exceeds the power dissipation
Answer:
The power dissipation for S-8323~4 is 500 mW when the SOT-89 package is used, and 150 mW when
the SOT-23 package is used. However, these power dissipation are only applicable when the loss is
steady. At start-up, the large peak current at the CONT terminal lasts only until the output voltage
increases to the preset value. Based on actually measured data using the SOT-23 package, the power
dissipation for the peak current duration (tpk) at the CONT terminal is shown in the figure below. For
example, when the peak current duration (tpk) at the CONT terminal is 100 m SEC, the power
dissipation is up to 5 W; the peak current is up to 1 A if CONT=5 V.
相關(guān)PDF資料
PDF描述
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)
S-8340B 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)
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