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參數(shù)資料
| 型號： | SG6848D |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Low Cost Green-Mode PWM Controller for Flyback Converters |
| 中文描述： | 低成本綠色模式PWM控制器，用于回掃轉(zhuǎn)換 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 263K |
| 代理商： | SG6848D |
Product Specification
Low Cost Green-Mode PWM Controller for Flyback Converters
SG6848
System General Corp.
Version 1.2(IRO33.0010.B0)
- 2 -
www.sg.com.tw
May.06, 2003
MARKING DIAGRAMS
PIN CONFIGURATION
ORDERING INFORMATION
Part Number
PWM Frequency
Package
SG6848T
70kHz
6-Pin SOT-26
SG6848D
70kHz
8-pin DIP-8
PIN DESCRIPTIONS
Pin No.
Name
Function
DIP-8 / (SOT-26)
Type
GATE
VDD
NC
1 / (6)
2 / (5)
3
Driver Output
Supply
The totem-pole output driver for driving the power MOSFET.
Power supply.
NC pin.
Current sense. This pin senses the voltage across a resistor. When the voltage reaches
the internal threshold, PWM output is disabled. This activates over-current protection.
This pin also provides current amplitude information for current-mode control.
A resistor connected from the RI pin to ground will generate a constant current source for
the SG6848. This current is used to charge an internal capacitor, to determine the
switching frequency. Increasing the resistance will reduce the amplitude of the current
source and reduce the switching frequency. A 95k
resistor R
i
results in a 50uA constant
current I
i
and a 70kHz switching frequency.
NC pin.
Feedback. The FB pin provides the output voltage regulation signal. It provides feedback
to the internal PWM comparator, so that the PWM comparator can control the duty cycle.
SENSE
4 / (4)
Analog Input
RI
5 / (3)
Analog
Input/Output
NC
6
FB
7 / (2)
Analog Input
GND
8 / (1)
Supply
Ground.
M
: Mask Version
Y
: Year;
WW
: Work Week
1
2
3
4
5
6
SOT-26
GND
FB
RI
GATE
VDD
SENSE
1
M
A
YWW
XXXXXXX
: Wafer Lot
YY
: Year;
WW
: Week
V
: Assembly Location
8
1
SG6848D
XXXXXXXYYWWV
DIP-8
RI
NC
FB
GND
SENSE
NC
VDD
GATE
4
3
2
1
5
6
7
8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SG6848DY1 | 功能描述:電流型 PWM 控制器 Highly Integrated Gr Mode PWM Contrl RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SG6848DZ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Fairchild Semiconductor Corporation 功能描述: |
| SG6848DZ1 | 功能描述:電流型 PWM 控制器 Lo Cost Gr-Mode PWM Ctrl Flyback Cnvrt RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SG6848T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Cost Green-Mode PWM Controller for Flyback Converters |
| SG6848TZ | 功能描述:電流型 PWM 控制器 Lo Cost Gr-Mode PWM Ctrl Flyback Cnvrt RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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