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參數(shù)資料
| 型號(hào)： | SI786LSG-E3 |
| 廠商： | Vishay Siliconix |
| 文件頁數(shù)： | 14/16頁 |
| 文件大小： | 236K |
| 描述： | IC REG QD BUCK/LINEAR 28SSOP |
| 標(biāo)準(zhǔn)包裝： | 225 |
| 拓?fù)洌?/td> | 降壓（降壓）（2），線性（LDO）（2） |
| 功能： | 任何功能 |
| 輸出數(shù)： | 4 |
| 頻率 - 開關(guān)： | 300kHz，200kHz |
| 電壓/電流 - 輸出 1： | 控制器 |
| 電壓/電流 - 輸出 2： | 控制器 |
| 電壓/電流 - 輸出 3： | 5V，5mA |
| 帶 LED 驅(qū)動(dòng)器： | 無 |
| 帶監(jiān)控器： | 無 |
| 帶序列發(fā)生器： | 無 |
| 電源電壓： | 5.5 V ~ 30 V |
| 工作溫度： | -10°C ~ 90°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SSOP |
| 包裝： | 散裝 |
www.vishay.com
14
Document Number: 70189
S-40807-Rev. J, 26-Apr-04
Vishay Siliconix
Si786
Product is End of Life 3/2014
Both minimum capacitance and maximum ESR require-
ments must be met. In order to get the low ESR, a capaci-
tance value of two to three times greater than the required
minimum may be necessary.
The equation for output ripple in continuous current mode is:
The equations for capacitive and resistive components of the
ripple in pulse-skipping mode are:
The total ripple, V
OUT(RPL)
, can be approximated as follows:
if
V
OUT(RPL)
(R) < 0.5 V
OUT(RPL)
(C),
then
V
OUT(RPL)
= V
OUT(RPL)
(C),
otherwise, V
OUT(RPL)
= 0.5 V
OUT(RPL)
(C) +
V
OUT(RPL)
(R).
Lower Voltage Input
The application circuit shown here can be easily modified to
work with 5.5 V to 12 V input voltages. Oscillation frequency
should be set at 200 kHz and increase the output capaci-
tance to 660 礔 on the 5 V output to maintain stable perfor-
mance up to 2 A of load current. Operation on the 3.3 V
supply will not be affected by this reduced input voltage.
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Tech-
nology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and reliability
data, see http://www.vishay.com/ppg?70189.
OUT(RPL)
I
LPP(MAX)
ESR
CF
1
2
xf C
F
+
x
x
x
+
x
OUT(RPL)
(C)
(4)
10
- 4
(L)
R
2
C
F
1
V
OUT
1
V
IN
- V
OUT
OUT(RPL)
(R)
(0.02)
ESR
CF
R
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| SI786LSG-T1 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual 3.45V Step-Down 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 |
| SI786LSG-T1-E3 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual 3.45V Step-Down 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 |
| SI7872DP | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Dual N-Channel 30-V (D-S) MOSFET with Schottky Diode |
| SI7872DP-T1 | 功能描述:MOSFET 30V 10A 1.4W RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
| SI7872DP-T1-E3 | 功能描述:MOSFET 30V 10A 0.022Ohm RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
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