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UC3847 参数 Datasheet PDF下载

UC3847图片预览
型号: UC3847
PDF下载: 下载PDF文件 查看货源
内容描述: 电流模式PWM控制器 [Current Mode PWM Controller]
分类和应用: 控制器
文件页数/大小: 10 页 / 644 K
品牌: TI [ TEXAS INSTRUMENTS ]
 浏览型号UC3847的Datasheet PDF文件第1页浏览型号UC3847的Datasheet PDF文件第3页浏览型号UC3847的Datasheet PDF文件第4页浏览型号UC3847的Datasheet PDF文件第5页浏览型号UC3847的Datasheet PDF文件第6页浏览型号UC3847的Datasheet PDF文件第7页浏览型号UC3847的Datasheet PDF文件第8页浏览型号UC3847的Datasheet PDF文件第9页  
UC1846/7  
UC2846/7  
UC3846/7  
ABSOLUTE MAXIMUM RATINGS (Note 1)  
Supply Voltage (Pin 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +40V  
Collector Supply Voltage (Pin 13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +40V  
Output Current, Source or Sink (Pins 11, 14) . . . . . . . . . . . . . . . . . . . . . . . 500mA  
Analog Inputs (Pins 3, 4, 5, 6, 16). . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +VIN  
Reference Output Current (Pin 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30mA  
Sync Output Current (Pin 10). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5mA  
Error Amplifier Output Current (Pin 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5mA  
Soft Start Sink Current (Pin 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA  
Oscillator Charging Current (Pin 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA  
Power Dissipation at TA=25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000mW  
Power Dissipation at TC=25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000mW  
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C  
Lead Temperature (soldering, 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . +300°C  
Note 1. All voltages are with respect to Ground, Pin 13. Currents are positive into,  
negative out of the speficied terminal. Consult Packaging Section of Databook for  
thermal limitations and considerations of packages. Pin numbers refer to DIL and  
SOIC packages only.  
CONNECTION DIAGRAMS  
DIL-16, SOIC-16  
PLCC-20, LCC-20  
(TOP VIEW)  
Q, L Packages  
PACKAGE PIN FUNCTION  
(TOP VIEW)  
FUNCTION  
PIN  
J or N Package, DW Package  
N/C  
1
C/L SS  
VREF  
C/S-  
C/S+  
N/C  
2
3
4
5
6
E/A+  
E/A-  
Comp  
CT  
N/C  
RT  
Sync  
A Out  
Gnd  
N/C  
VC  
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
B Out  
VIN  
Shutdown  
(Unless otherwise stated, these specifications apply for TA=-55°C to +125°C for  
UC1846/7; -40°C to +85°C for the UC2846/7; and 0°C to +70°C for the UC3846/7;  
VIN=15V, RT=10k, CT=4.7nF, TA=TJ.)  
ELECTRICAL CHARACTERISTICS  
UC1846/UC1847  
UC3846/UC3847  
PARAMETER  
TEST CONDITIONS  
UC2846/UC2847  
MIN. TYP. MAX. MIN. TYP. MAX. UNITS  
Reference Section  
Output Voltage  
TJ=25°C, IO=1mA  
5.05  
5.10  
5
5.15  
20  
5.00  
5.10  
5
5.20  
20  
V
mV  
mV  
mV/°C  
V
Line Regulation  
VIN=8V to 40V  
Load Regulation  
IL=1mA to 10mA  
3
15  
3
15  
Temperature Stability  
Total Output Variation  
Output Noise Voltage  
Long Term Stability  
Over Operating Range, (Note 2)  
Line, Load, and Temperature (Note 2)  
10Hz f 10kHz, TJ=25°C (Note 2)  
TJ=125°C, 1000 Hrs. (Note 2)  
0.4  
0.4  
5.00  
-10  
5.20  
4.95  
-10  
5.25  
100  
5
100  
5
µV  
mV  
mA  
Short Circuit Output Current VREF=0V  
-45  
-45  
2