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参数资料
| 型号： | SG5701DZ_SB82166 |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 2/13页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO PWM 8-DIP |
| 产品变化通告： | Product Discontinuation 27/Feb/2012 |
| 标准包装： | 59 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 75kHz |
| 占空比： | 80% |
| 电源电压： | 11.7 V ~ 24 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -30°C ~ 105°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 包装： | 管件 |
Product Specification
Low Cost Green-Mode PWM Controller for Flyback Converters
MARKING DIAGRAMS
PIN CONFIGURATION
SOT-26
SG5701
AAEMW
SG5701DP
XXXXXXXXYWWV
AAE: SG5701
M: Mask Version
W : Week
: Lead Free
D : D=DIP
P : Z =Lead Free
Null=Regular Package
XXXXXXXX : Wafer Lot
Y : Year
WW : Week
V : Assembly Location
GND
FB
RI
GATE
VDD
NC
SENSE
DIP-8
GATE
VDD
SENSE
GND
FB
NC
RI
ORDERING INFORMATION
Part Number
SG5701TZ
SG5701DZ
PWM Frequency
70kHz
70kHz
Package
6-Pin SOT-26 (Lead Free)
8-pin DIP-8 (Lead Free)
PIN DESCRIPTIONS
Name
GATE
VDD
NC
Pin No.
DIP-8 / (SOT-26)
1 / (6)
2 / (5)
3
Type
Driver Output
Supply
Function
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
SENSE
4 / (4)
Analog Input
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
RI
5 / (3)
Analog
Input/Output
the SG5701. 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
6
NC pin.
FB
GND
7 / (2)
8 / (1)
Analog Input
Supply
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.
Ground.
? System General Corp.
Version 1.0(IAO33.0025.B1)
-2-
www.sg.com.tw
Mar. 28, 2006
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|---|---|
| SG5701TZ | 功能描述:电流型 PWM 控制器 GREEN-MODE PWM CONTROLLER RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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