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參數(shù)資料
| 型號(hào)： | S-8333ACIC-T8T1G |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.16 A SWITCHING CONTROLLER, 1133 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | LEAD FREE, TSSOP-8 |
| 文件頁數(shù)： | 1/43頁 |
| 文件大?。?/td> | 588K |
| 代理商： | S-8333ACIC-T8T1G |
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Rev.2.3_00
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM
CONTROL SWITCHING REGULATOR CONTROLLER
S-8333 Series
Seiko Instruments Inc.
1
The S-8333 Series is a CMOS step-up switching regulator which mainly consists of a reference voltage
circuit, an oscillator, an error amplifier, a PWM controller, an under voltage lockout circuit (UVLO), and a
timer latch short-circuit protection circuit. Because its minimum operating voltage is as low as 1.8 V, this
switching regulator is ideal for the power supply of an LCD or for portable systems that operate on a low
voltage. The internal oscillation frequency can be set up to 1.133 MHz, via the resistor connected to the
ROSC pin.
The maximum duty ratio of PWM control can be controlled by the resistor connected to the RDuty pin. The
soft-start function at power application is accomplished by combining the reference voltage control and
maximum duty control methods. Even if the voltage of the FB pin is retained lower than the reference
voltage due to the factor outside the IC, the output voltage is raised by controlling the maximum duty. The
phase compensation and gain value can be adjusted according to the values of the resistor and capacitor
connected to the CC pin. Therefore, the operation stability and transient response can be correctly set for
each application. The reference voltage accuracy is as high as 1.0 V
±1.5%, and any voltage can be
output by using an external output voltage setting resistor.
In addition, the delay time of the short-circuit protection circuit can be set by using the capacitor
connected to the CSP pin. If the maximum duty condition continues because of short-circuiting, the
capacitor externally connected to the CSP pin is charged, and oscillation stops after a specific time. The
short-circuit protection function is cancelled when the power supply is raised to the UVLO release voltage
after it has been lowered to the UVLO detection voltage. A ceramic capacitor or a tantalum capacitor is
used as the output capacitor, depending on the setting. This controller IC allows various settings and
selections and employs a small package, making it very easy to use.
Features
Low voltage operation:
1.8 V to 6.0 V
Oscillation frequency:
286 kHz to 1.133 MHz (selectable by external resistor)
Maximum duty:
Settable up to 88.5% by external resistor
47 to 88.5% (oscillation frequency; 500 kHz or more)
47 to 80% (oscillation frequency; less than 500 kHz)
Reference voltage:
1.0 V
±1.5%
Range of operation temperature: 40 to +85°C
UVLO (under-voltage lockout) function:
Detection voltage can be selected from between 1.5 V and 2.3 V in 0.1 V step.
Hysteresis width can be selected from between 0.1 V and 0.3 V in 0.1 V step.
Timer latch short-circuit protection circuit:
Delay time can be set using an external capacitor.
Soft-start function:
Soft-start time can be selected in three steps, 10 ms, 15 ms, and 20 ms.
Both reference voltage control and maximum duty control methods are applied
Phase compensation external setting:
Control is possible via the resistor connected between the CC and GND pins
and capacitor
Small package:
SNT-8A, 8-Pin TSSOP
Lead-free products
Applications
Power supplies for LCDs and CCDs
Power supplies for portable equipment
Packages
Drawing Code
Package Name
Package
Tape
Reel
Land
SNT-8A
PH008-A
8-Pin TSSOP
FT008-A
FT008-E
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-8333CCBC-T8T1U | 功能描述:IC REG CTRLR BOOST 8TSSOP 制造商:ablic u.s.a. inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 輸出類型:晶體管驅(qū)動(dòng)器 功能:升壓 輸出配置:正 拓?fù)?升壓 輸出數(shù):1 輸出階段:1 電壓 - 電源（Vcc/Vdd）:1.8 V ~ 6 V 頻率 - 開關(guān):280kHz ~ 1.08MHz 占空比（最大）:0.89 同步整流器:無 時(shí)鐘同步:無 串行接口:- 控制特性:限流，頻率控制 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商器件封裝:8-TSSOP 標(biāo)準(zhǔn)包裝:1 |
| S-8335A120FT | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual Pos/Neg 3 Ch 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-8335A120FT-TB-G | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual Pos/Neg 3 Ch 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-8335A160FT | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual Pos/Neg 3 Ch 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-8335A160FT-TB-G | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual Pos/Neg 3 Ch 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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