- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382500 > SG6108DZ (FAIRCHILD SEMICONDUCTOR CORP) Power Supply Supervisor + PWM PDF資料下載
參數(shù)資料
| 型號： | SG6108DZ |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Power Supply Supervisor + PWM |
| 中文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, DIP20 |
| 封裝： | LEAD FREE, DIP-20 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 656K |
| 代理商： | SG6108DZ |
Product Specification
Power Supply Supervisor + PWM
SG6108
System General Corp.
Version 1.0.1 (IAO33.0048.B0)
- 13 -
www.sg.com.tw www.fairchildsemi.com
September 26, 2007
+
R2
R1
2.1V
64uA
-12V
-5V
Vdd
OPP
OP2
OP1
R1
R2
R3
C1
Over Current Protection (OCP)
The SG6108 provides over current protection for the
3.3V, 5V and the two 12V rails. Whenever an OCP
condition occurs at any of the voltage rails, PG will be low
and PWM will be turned off. The internal OCP
comparators have a very small offset voltage (
±
5mV).
The sink currents of IS33, IS5, and IS12 are 8 times the
current at the RI pin. The current at the RI pin is V
RI
/RI.
Here is an example demonstrating how to set the over
current protection threshold:
I
RI
= V
RI
/RI = 1.0V/75k = 13.3uA
If R1 = 1700
and R12 = 0.01
, then
OC P = 13.3uA x 8 x 1700 / 0.01 = 18 A
Negative Voltage Protection
NVP provides UVP (under voltage protection) for
negative voltage outputs. An under-voltage condition
indicates an overload at a negative voltage output. For
example, the –12V output may drop to –10V during
overload situations. The resistance of a resistor connected
from NVP to the negative voltage output determines the
protection threshold voltage. NVP outputs a 64uA
constant current to the negative voltage output via this
resistor. Whenever the NVP voltage exceeds 2.1V for
longer than 7 msec the SG6108 will lock the power
outputs off.
VNVP = 64 uA
×
(R1 + R2) – V-12V
The power outputs will be locked off when VNVP
≥
2.1V.
相關PDF資料 |
PDF描述 |
|---|---|
| SG6203 | Synchronous Rectifier Controller for Flyback Converter |
| SG6203DZ | Synchronous Rectifier Controller for Flyback Converter |
| SG6203SZ | Synchronous Rectifier Controller for Flyback Converter |
| SG6516 | PC Power Supply Supervisors |
| SG6520 | PC Power Supply Supervisors |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SG615 | 制造商:ECM 制造商全稱:ECM Electronics Limited. 功能描述:SURFACE MOUNT OSCILLATOR |
| SG-615 | 制造商:EPSON 制造商全稱:EPSON 功能描述:SOJ HIGH-FREQUENCY CRYSTAL OSCILLATOR |
| SG-615-24.0MC2 | 功能描述:OSCILLATOR 24.000MHZ SMD RoHS:否 類別:晶體和振蕩器 >> 振蕩器 系列:SG615 標準包裝:1 系列:VG-4512CA 類型:VCXO 頻率:153.6MHz 功能:三態(tài)（輸出啟用） 輸出:LVPECL 電源電壓:3.3V 頻率穩(wěn)定性:- 工作溫度:-40°C ~ 85°C 電流 - 電源（最大）:60mA 額定值:- 安裝類型:表面貼裝 尺寸/尺寸:0.276" L x 0.197" W（7.00mm x 5.00mm） 高度:0.071"（1.80mm） 封裝/外殼:6-SMD，無引線（DFN，LCC） 包裝:Digi-Reel® 電流 - 電源（禁用）（最大）:- 其它名稱:SER3790DKR |
| SG615-4.9152MC2 | 制造商:Epson Electronics America Inc 功能描述: |
| SG-615AH32.000MHZC | 制造商:ARC-TRONICS 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。