參數(shù)資料
型號： S-8333ABBB-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)： 4/43頁
文件大?。?/td> 588K
代理商： S-8333ABBB-T8T1G
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8333 Series
Rev.2.3_00
Seiko Instruments Inc.
12
5. Error amplifier
The error amplifier outputs the PWM control signal so that the voltage of the FB pin is held at a specific value (1
V). By connecting a resistor (RZ) and capacitor (CZ) to the output pin (CC pin) of the error amplifier in series, an
optional loop gain can be set, enabling stabilized phase compensation.
6. Operation
The following are basic equations [(1) through (7)] of the step-up switching regulator (refer to Figure 10).
D
L
CL
M1
FB
CONT
VIN
EXT
VSS
VOUT
Figure 10 Step-up Switching Regulator Circuit for Basic Equations
Voltage at the CONT pin at the moment M1 is turned ON (current IL flowing through L is zero), VA:
VA
= VS
*1 ................................................................................................................................................. (1)
*1.
VS: Non-saturated voltage of M1
Change in IL over time:
L
V
L
V
dt
dl
S
IN
L
=
............................................................................................................................. (2)
Integration of the above equation:
t
L
V
I
S
IN
L
=
.................................................................................................................................... (3)
IL flows while M1 is ON (ton). This time is determined by the oscillation frequency of OSC.
Peak current (IPK) after tON:
ON
S
IN
PK
t
L
V
I
=
.............................................................................................................................. (4)
The energy stored in L is represented by
()2
PK
I
L
2
1
.
When M1 is turned OFF (tOFF), the energy stored in L is released via a diode, generating a reverse voltage (VL).
VL:
(
)
IN
2
*
D
OUT
L
V
+
=
......................................................................................................................... (5)
*2.
VD: Diode forward voltage
The voltage on the CONT pin rises only by VOUT
+ VD.
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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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