- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄385567 > MC34166 (ON SEMICONDUCTOR) 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C PDF資料下載
參數(shù)資料
| 型號(hào)： | MC34166 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 射頻放大器 |
| 文件頁(yè)數(shù)： | 15/18頁(yè) |
| 文件大?。?/td> | 265K |
| 代理商： | MC34166 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)當(dāng)前第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
MC34166, MC33166
http://onsemi.com
15
Table 1. Design Equations
Calculation
StepDown
StepUp/Down
VoltageInverting
ton
toff
(Notes 1, 2)
Vout
VF
Vin
Vsat
Vout
Vout
VF1
VF2
VsatQ2
Vin
VsatQ1
|Vout|
Vin
VF
Vsat
t
on
ton
toff
ton
toff
fosc
1
ton
toff
ton
toff
fosc
1
ton
toff
ton
toff
fosc
1
Duty Cycle
(Note 3)
t
on
f
osc
t
on
f
osc
t
on
f
osc
I
L avg
I
out
Iout
ton
toff
1
Iout
ton
toff
1
I
pk(switch)
IL avg
IL
2
IL avg
IL
2
IL avg
IL
2
L
Vin
Vsat
Vout
IL
ton
Vin
VsatQ1
VsatQ2
IL
ton
Vin
Vsat
IL
ton
V
ripple(pp)
IL
1
8foscCo
2
(ESR)2
ton
toff
1
1
foscCo
2
(ESR)2
ton
toff
1
1
foscCo
2
(ESR)2
V
out
Vref
R2
R1
1
Vref
R2
R1
1
Vref
R2
R1
1
1. V
sat
Switch Output source saturation voltage, refer to Figure 8.
2. V
F
Output rectifier forward voltage drop. Typical value for 1N5822 Schottky barrier rectifier is 0.5 V.
3. Duty cycle is calculated at the minimum operating input voltage and must not exceed the guaranteed minimum DC
(max)
specification of 0.92.
V
out
I
out
I
L
V
ripple(pp)
Desired output voltage.
Desired output current.
Desired peaktopeak inductor ripple current. For maximum output current especially when the duty cycle is greater than
0.5, it is suggested that I
L
be chosen to be less than 10% of the average inductor current I
L avg
. This will help prevent
I
pk(switch)
from reaching the guaranteed minimum current limit threshold of 3.3 A. If the design goal is to use a minimum
inductance value, let I
L
= 2 (I
L avg
). This will proportionally reduce the converter’s output current capability.
Desired peaktopeak output ripple voltage. For best performance, the ripple voltage should be kept to less than 2% of V
out
.
Capacitor C
O
should be a low equivalent series resistance (ESR) electrolytic designed for switching regulator applications.
The following converter characteristics must be chosen:
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC34167 | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| MC34262D | POWER FACTOR CONTROLLERS |
| MC34262P | POWER FACTOR CONTROLLERS |
| MC34262 | Power Factor Controllers(功率因數(shù)控制器) |
| MC34280 | Power Supply & Management IC for Handheld Electronic Products(用于手提電子產(chǎn)品的電源管理芯片) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC34166_05 | 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:3.0 A, Step−Up/Down/Inverting Switching Regulators |
| MC34166D2T | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 40V 3A RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34166D2TG | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 40V 3A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34166D2TR4 | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 40V 3A RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34166D2TR4G | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 40V 3A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。