- 您现在的位置：买卖IC网 > PDF目录19506 > SG6846CLDZ (Fairchild Semiconductor)IC CTRLR PWM PROG GREEN OTP 8DIP PDF资料下载
参数资料
| 型号： | SG6846CLDZ |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 3/15页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM PROG GREEN OTP 8DIP |
| 产品变化通告： | Product Discontinuation 03/Dec/2009 |
| 标准包装： | 59 |
| 输出隔离： | 隔离 |
| 频率范围： | 44.8 ~ 136kHz |
| 输入电压： | 10.5 V ~ 25 V |
| 输出电压： | 18V |
| 功率（瓦特）： | 800mW |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
Marking Information
F: L = OCP Latch
T : D = DIP, S = SOP
P : Z = Lead Free +
SG6846CFTP
XXXXXXXXYWWV
ROHS Compatible
Null = regular package
XXXXXXXX : Wafer Lot
Y : Year; WW : Week
V : Assembly Location
Figure 3. Top Mark
Pin Configuration
GND
FB
VIN
RI
GATE
VDD
SENSE
RT
Figure 4. Pin Configuration
Pin Definitions
Pin #
1
Name
GND
Function
Ground
Description
Ground.
The signal from the external compensation circuit is fed into this pin. The
2
FB
Feedback
PWM duty cycle is determined in response to the signal from this pin and the
current-sense signal from pin 6.
3
VIN
Line-voltage
Detection
Line-voltage detection, used for brownout protection with hysteresis. Constant
output power limit over universal AC input range is also achieved using this
pin. Add a low-pass filter to filter out line ripple on bulk capacitor.
A resistor from the RI pin to ground generates a reference current source that
4
RI
Reference
Setting
determines the switching frequency. Increasing the resistance reduces the
switching frequency. Using a 26k ? resistor results in a 65kHz switching
frequency.
For over-temperature protection, an external NTC thermistor is connected
5
RT
Temperature
Detection
from this pin to the GND pin. The impedance of the NTC decreases at high
temperatures. Once the voltage of the RT pin drops below a threshold, PWM
output is disabled.
Current sense. The sensed voltage is used for peak-current-mode control and
6
SENSE
Current Sense
cycle-by-cycle current limiting. If the switching current is higher than OCP
threshold and lasts for 110ms, SG6846C turns off immediately. This two-level
OCP feature is especially suitable for SMPS with surge current output.
Power supply. If an open-circuit failure occurs in the feedback loop, the
7
8
VDD
GATE
Power Supply
Driver Output
internal protection circuit disables PWM output as long as V DD exceeds a
threshold.
The totem-pole output driver for the power MOSFET. It is internally clamped
below 18V.
? 2007 Fairchild Semiconductor Corporation
SG6846C ? Rev. 1.1.2
3
www.fairchildsemi.com
相关PDF资料 |
PDF描述 |
|---|---|
| SG6846BLSZ | IC CTRLR PWM OVP OTP OCP 8SOP |
| VI-B1Z-CY-F2 | CONVERTER MOD DC/DC 2V 20W |
| EEM15DRST-S288 | CONN EDGECARD 30POS .156 EXTEND |
| OKY2-T/10-D12N-C | CONV DC/DC 50W 12VIN 10AOUT SMD |
| GSC28DTES | CONN EDGECARD 56POS .100 EYELET |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SG6846CLSZ | 功能描述:软开关 PWM 控制器 Highly-Integrated Grn Mode PWM Cntrl RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| SG6846CS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Highly-Integrated Green-Mode PWM Controller |
| SG6846CSZ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Highly-Integrated Green-Mode PWM Controller |
| SG6846G | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Highly Integrated Green-Mode PWM Controller |
| SG6846G_09 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Highly Integrated Green-Mode PWM Controller |
发布紧急采购，3分钟左右您将得到回复。