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| 型号： | SI786LSG-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 14/16页 |
| 文件大小： | 236K |
| 描述： | IC REG QD BUCK/LINEAR 28SSOP |
| 标准包装： | 225 |
| 拓扑： | 降压（降压）（2），线性（LDO）（2） |
| 功能： | 任何功能 |
| 输出数： | 4 |
| 频率 - 开关： | 300kHz，200kHz |
| 电压/电流 - 输出 1： | 控制器 |
| 电压/电流 - 输出 2： | 控制器 |
| 电压/电流 - 输出 3： | 5V，5mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 5.5 V ~ 30 V |
| 工作温度： | -10°C ~ 90°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 散装 |
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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相关代理商/技术参数 |
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|---|---|
| SI786LSG-T1 | 功能描述:开关变换器、稳压器与控制器 Dual 3.45V Step-Down RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SI786LSG-T1-E3 | 功能描述:开关变换器、稳压器与控制器 Dual 3.45V Step-Down RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SI7872DP | 制造商:VISHAY 制造商全称: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 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
| SI7872DP-T1-E3 | 功能描述:MOSFET 30V 10A 0.022Ohm RoHS:否 制造商:STMicroelectronics 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
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