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參數(shù)資料
| 型號： | S-8331 |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | 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) |
| 中文描述： | 升壓型開關(guān)LCD偏置電源穩(wěn)壓器（用于液晶偏置電源的步升開關(guān)穩(wěn)壓器） |
| 文件頁數(shù)： | 2/35頁 |
| 文件大?。?/td> | 324K |
| 代理商： | S-8331 |
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Rev.2.8
Seiko Instruments Inc.
1
STEP-UP SWITCHING REGULATOR
FOR LCD BIAS SUPPLY
S-8330/8331 Series
The S-8330/8331 Series is a CMOS PWM-control step-up switching
regulator which mainly consists of a reference voltage source, an
oscillation circuit, a power MOS FET (for S-8330 Series) , and an error
amplifier. The output voltage can adjust by built-in Electric volume circuit
, and equip with shutdown function. The S-8330 Series is low current
consumption because of CMOS structure , and a step-up switching
regulator constructed by externally connecting only a coil, a capacitor
and a diode. This feature, along with its 8-Pin SSOP package and a few
external components, makes the S-8330 Series ideal for LCD bias
generators of portable equipment. For applications requiring a high
output current, products used with an external transistor (S-8331 Series)
are also available.
Features
Applications
Maximum output voltage: 20 V to 30 V (2 V step)
Power supplies for medium type or large type
12 V range can be adjusted by electric volume
LCD panel.
Output current: 5mA ( V
IN
= 5 V,V
OUT
= 30 V)
Power supplies for portable devices such as
Low current consumption :
pagers, handy calculators, and remote controllers
During operation: 100 A (typ.) (V
IN
= 5 V 180 kHz)
Constant voltage power supplies for cameras,
During shutdown : 1.0 A (max.)
video equipment, and communications equipment
Shutdown function: Stepping up operation is stopped ,
and Vout pin is shorted to GND while shutdown.
Input voltage range: 2.0 to 9.0 V
Soft start function: 3 msec (typ.)
Built-in CR oscillation circuit:
Oscillating frequency: 180 kHz (typ.) (A series)
Oscillating frequency: 50 kHz (typ.) (B series)
8-pin SSOP plastic package
8-bit built-in electric volume circuit
External transistor type is available (S-8331 Series)
Block Diagram
(1) S-8330 Series
(2)
S-8331 Series
Figure 1 Block Diagram
CONT
RESET
ON/OFF
SD
V
OUT
V
SS
CR Oscillation
Circuit
V
REF
PWM
Control
Circuit
+
-
V
IN
V
IN
L
-
+
External
Transistor
Rb
Cb
VDIN
VCLK
VSTRB
CL
EXT
L
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| 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) |
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| S-8341 | PWM/PFM Control High-Frequency Step-Up Switching Regulator-Controllers(PWM/PFM控制，高頻步升開關(guān)穩(wěn)壓器-控制器) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-8331A20FS-T2 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 8V-20V 100uA 2.4% 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-8331A20FS-T2-G | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 8V-20V 100uA 2.4% 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-8331A22FS-T2 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 10V-22V 100uA 2.4% 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-8331A22FS-T2-G | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 10V-22V 100uA 2.4% 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-8331A24FS-T2 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 12V-24V 100uA 2.4% 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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