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)： 23/68頁
文件大?。?/td> 647K
代理商： S-8324
SMALL PACKAGE PWM/PFM CONTROL STEP-UP SWITCHING REGULATOR
S-8324/8328 Series
22
Seiko Instruments Inc.
When output current I
OUT
exceeds 50 mA, the current capacitance in the external transistor 2SA1362 becomes in short
supply and the IC may be broken. Select a large current capacitance transistor.
The start circuit is not needed because the power supply is supplied from V
DD
to the IC. Set Vin to 9 V - |V
CC
| or less.
The output voltage cannot be changed with external resistors.
Set R
b
to 60
or more and R
E
to 6 k
or less. The larger R
E
, the smaller the reactive current through R
E
and R
b
, allowing the
efficiency to be improved. On the other hand, the switching loss of the Tr becomes large and consequently the efficiency will
be worsened. Select R
E
to ensure high efficiency under operating conditions.
7.
LCD Power Supply (Standard circuit (6))
The following are an application power supply circuit (30V/5mA) for intermidiate and large size LCD, and its characteristics
when 3V (3V±10%) and 5V (5V±10%) are used for the applied power.
S-8328E50
-
+
-
+
V
OUT
4.7
μ
F/50V
×
2
EXT
C
IN
V
IN
to 30V
F93
C
OUT
CD54/100
μ
H
1k
0.022
μ
F
R
b
V
SS
MA720
SD
L
Cb
V
DD
R
A
100k
C
C
15pF
482k
R
B
Figure 27
Figure 26
(c) Ripple Characteristics
t (10
μ
sec/div)
10mV/div
0V
-3V
CONT
(2V/div)
Output
Voltage
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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