參數(shù)資料
型號： 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）控制步升開關穩(wěn)壓器)
中文描述： 的CMOS脈寬調(diào)制控制升壓開關穩(wěn)壓器（內(nèi)置開關）（烤瓷的CMOS（頻率脈沖調(diào)制）控制步升開關穩(wěn)壓器）
文件頁數(shù)： 23/65頁
文件大?。?/td> 569K
代理商： S-8323
SMALL PACKAGE PWM CONTROL STEP-UP SWITCHING REGULATOR
S-8323/8327 Series
22
Seiko Instruments Inc.
5.
Voltage Inverting Type DC/DC Converter
The Start circuit is not needed because the power is supplied from V
DD
to the IC. Set V
IN
to 9V-|V
CC
| or less.
When V
CC
is -2 V, - 3 V and - 5 V, use the S-8323D20MC, the S-8323D30MC and the S-8323D50MC respectively. Always
connect V
OUT
to GND without attaching R
A
, R
B
.
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 worsend. Select R
E
to ensure high efficiency under operating conditions.
6.
Power Supply for GaAs and MR Head
The following are an application negative power supply circuit for GaAs and MR head, and its characteristics when 3V
(3V
±
10%) and 5V (5V
±
10%) are used for the applied power. Set V
IN
to 9V-|V
CC
| or less.
Figure 25
-3.05
-3.03
-3.01
-2.99
-2.97
-2.95
0.01
0.1
1.
10.
100.
(mA)
VIN=2.7V
VIN=3.0V
VIN=4.5V
VIN=5.0V
0
20
40
60
80
100
0.01
0.1
1.
10.
100.
(mA)
VIN=2.7V
VIN=3.0V
VIN=4.5V
VIN=5.0V
(a)Output Current - Output Voltage
(b)Output Current - Efficiency
Output Current I
OUT
Output Current I
OUT
Output
Voltage
V
OUT
(V)
Efficiency
η
(%)
Figure 24
V
DD
S-8323D30
-
C
IN
+
+
-
V
SS
V
OUT
C
OUT
R
E
R
b
CONT
V
IN
-3V
2SA1362/Toshiba
750
2k
A
CD54/100
μ
H
F93
47
μ
F
MA720
SD
V
CC
Figure 23
V
DD
S-8323D
-
C
IN
+
+
-
V
SS
V
OUT
C
OUT
R
E
R
b
CONT
V
IN
Tr
V
CC
R
B
R
A
相關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）控制步升開關穩(wěn)壓器)
S-8324 CMOS PWM/PFM-Control Step-Up Switching Regulator(CMOS PWM/PFM控制步升開關穩(wěn)壓器)
S-8328 CMOS PWM/PFM-Control Step-Up Switching Regulator(CMOS PWM/PFM控制步升開關穩(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穩(wěn)壓器)
相關代理商/技術參數(shù)
參數(shù)描述
S-8323A27MC-ELH-T2 功能描述:開關變換器、穩(wěn)壓器與控制器 REORD 628-8353A27MC 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-8323A30MC-ELK-T2 功能描述:DC/DC 開關控制器 3.0V 17.2uA 2.4% RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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-8323A33MC-ELN-T2 功能描述:DC/DC 開關控制器 3.3V 19.1uA 2.4% RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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-8323A50MC-EME-T2 功能描述:開關變換器、穩(wěn)壓器與控制器 REORD 628-8353A50MC 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
S8324A10-8 制造商: 功能描述: 制造商:undefined 功能描述:
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