參數(shù)資料
型號(hào): S-8323
廠商: Seiko Instruments Inc.
英文描述: CMOS PWM-Control Step-Up Switching Regulator(Built-In Switch)(CMOS PFM(頻率脈沖調(diào)制)控制步升開關(guān)穩(wěn)壓器)
中文描述: 的CMOS脈寬調(diào)制控制升壓開關(guān)穩(wěn)壓器(內(nèi)置開關(guān))(烤瓷的CMOS(頻率脈沖調(diào)制)控制步升開關(guān)穩(wěn)壓器)
文件頁(yè)數(shù): 55/65頁(yè)
文件大?。?/td> 569K
代理商: S-8323
54
Collection of Product FAQs
Author: Tachibana Midori
Date: 98/11/12 (Thursday) 10:17 (Modified:)
<Information level>
X:
Working
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 using MOS FET siliconix/TN200T externally connected to the S-8328B
Answer:
Power dissipation when Siliconix/TN200T is used.
Results:
-
Version 3.3 V did not have the required capacity of Iout = 400 mA (at VIN=1.8 V) when
Siliconix/TN0200T was employed.
-
Version 5 V did not exceed the power dissipation of Siliconix/TN0200T at Iout = 200 mA (at VIN=1.8
V).
Description of study:
Loss P under the worst possible conditions (VIN=1.8 V, Iout=200 mA) was calculated.
P
=
(I contave
×
duty)
2
×
Ron
=
(0.84A
×
76%)
2
×
0.4
=
0.163w
PD (0.23w)
Where,
I contave:Average current that flows through the external MOS FET, TRS at the time of ton. This is a
measured value (see the waveforms below).
duty:
Ratio of ton to the switching period. This is a measured value (see the waveforms below).
Ron:
Drain-source resistance value when Siliconix/TN0200T comes on. This is the maximum
value of the specification.
PD:
Package power dissipation of Siliconix/TN0200T. This is the maximum value of the
specification.
相關(guān)PDF資料
PDF描述
S-8327 CMOS PWM-Control Step-Up Switching Regulator(External Transistor)(CMOS PFM(頻率脈沖調(diào)制)控制步升開關(guān)穩(wěn)壓器)
S-8324 CMOS PWM/PFM-Control Step-Up Switching Regulator(CMOS PWM/PFM控制步升開關(guān)穩(wěn)壓器)
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)
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