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參數(shù)資料
| 型號(hào)： | SG6840 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HIGH INTEGRATED PWM CONTROLLER |
| 中文描述： | 高集成PWM控制器 |
| 文件頁(yè)數(shù)： | 2/11頁(yè) |
| 文件大?。?/td> | 384K |
| 代理商： | SG6840 |
H
Product Specification
SG6840
2002 System General Corporation Ver1.0 http://www.sg.com.tw
- 2 -
PIN DESCRIPTIONS
4
R
S
Q
+
_
+
_
+
_
OSC
Green Mode
Controller
Soft
ON/OFF
Driver
8
6
2
5V
1
5
3
7
Internal
BIAS
0.8V
16V/10V
VIN
VDD
RT
GND
FB
Sense
Gate
Ri
Slope
Compensation
I
RT
AI
Comp
Comp
0.7V
UVLO
VDD
BLOCK DIAGRAM
Name
Pin No.
Type
Function
VDD
7
Supply
Power supply.
VIN
3
Analog in-
put
The start-up current input. A start-up resistor is connected from the
line-input to this pin, such as 1.5M
for off-line converter. Adjust the
start-up resistor to vary the line voltage compensation for constant
FB
2
Analog in-
put
Feedback. The FB pin provides the information of the regulation, it
effects to the internal PWM comparator to control the duty cycle.
Sense
6
Analog in-
put
Current sense. It senses the voltage developed on a sensed resistor.
When it reaches the internal threshold, the PWM output is disabled.
Therefore, the over-current protection is realized. Besides, the current
information is providing for the current mode control.
For over-temperature protection. A constant current is output.
An NTC thermistor is connected from this pin to ground to sense the
temperature. When the voltage in this pin is lower than the limit,
which will enable the over-temperature protection.
RT
5
Analog in-
put/output
Gate
8
Driver out- The totem-pole output driver to drive the power MOSFET.
Ri
4
Program- Reference setting. Connect a resistor to ground to generate a con-
GND
1
Supply
Ground.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SG6841 | High-integrated Green-mode PWM Controller |
| SG6841D | High-integrated Green-mode PWM Controller |
| SG6841S | High-integrated Green-mode PWM Controller |
| SG6846LD | Highly-Integrated Green-Mode PWM Controller |
| SG6846LDZ | Highly-Integrated Green-Mode PWM Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SG6841 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High-integrated Green-mode PWM Controller |
| SG6841D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High-integrated Green-mode PWM Controller |
| SG6841DZ | 功能描述:電壓模式 PWM 控制器 HI-INTEGRD GRN-MODE PWM CONTROLLER RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SG6841DZ3 | 功能描述:電壓模式 PWM 控制器 SINGLE STAGE PFC CONTROLLER RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SG6841S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High-integrated Green-mode PWM Controller |
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