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LT1109CS8-12 参数 Datasheet PDF下载

LT1109CS8-12图片预览
型号: LT1109CS8-12
PDF下载: 下载PDF文件 查看货源
内容描述: 微低成本DC / DC转换器可调节和固定5V , 12V [Micropower Low Cost DC/DC Converter Adjustable and Fixed 5V, 12V]
分类和应用: 转换器开关光电二极管
文件页数/大小: 8 页 / 214 K
品牌: Linear [ Linear ]
 浏览型号LT1109CS8-12的Datasheet PDF文件第1页浏览型号LT1109CS8-12的Datasheet PDF文件第3页浏览型号LT1109CS8-12的Datasheet PDF文件第4页浏览型号LT1109CS8-12的Datasheet PDF文件第5页浏览型号LT1109CS8-12的Datasheet PDF文件第6页浏览型号LT1109CS8-12的Datasheet PDF文件第7页浏览型号LT1109CS8-12的Datasheet PDF文件第8页  
LT1109  
W W W  
U
ABSOLUTE AXI U RATI GS  
(Voltages Referred to GND Pin)  
Supply Voltage (VOUT) .............................. 0.4V to 20V  
SW Pin Voltage..........................................0.4V to 50V  
SHUTDOWN Pin Voltage......................................... 6.0V  
Operating Temperature Range ..................... 0°C to 70°C  
Storage Temperature Range ................. 65°C to 150°C  
Lead Temperature (Soldering, 10 sec.)................. 300°C  
Maximum Power Dissipation ............................. 300mW Switch Current........................................................ 1.2A  
W U  
/O  
PACKAGE RDER I FOR ATIO  
BOTTOM VIEW  
TOP VIEW  
TOP VIEW  
3
2
1
1
2
3
4
8
7
6
5
SENSE  
SHUTDOWN  
NC  
V
VIN  
NC  
1
2
3
4
SENSE  
SHUTDOWN  
NC  
8
7
6
5
IN  
V
GND  
SW  
OUT  
NC  
SW  
SW  
GND  
NC  
NC  
GND  
Z PACKAGE  
3-LEAD TO-92 PLASTIC LT1109 • POI01  
S8 PACKAGE  
8-LEAD PLASTIC SOIC  
N8 PACKAGE  
8-LEAD PLASTIC DIP  
LT1109 • PO103  
LT1109 • PO102  
TJMAX = 100°C, θJA = 150°C/W  
TJMAX = 100°C, θJA = 130°C/W  
T
JMAX = 100°C, θJA = 160°C/W  
S8 PART  
MARKING  
ORDER PART  
NUMBER  
ORDER PART  
NUMBER  
ORDER PART  
NUMBER  
LT1109CS8  
LT1109CS8-5  
LT1109CS8-12  
LT1109CN8  
LT1109CN8-5  
LT1109CN8-12  
1109  
10905  
10912  
LT1109CZ-5  
LT1109CZ-12  
ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 3V (LT1109CN8, LT1109CS8), unless otherwise specified.  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
µA  
I
Quiescent Current  
Switch Off  
320  
550  
Q
Minimum Start-Up Voltage  
1.6  
V
at V  
Pin (Z Package)  
OUT  
V
V
Input Voltage (N8, S8 Package)  
Comparative Trip Point Voltage  
Output Voltage  
3
V
V
IN  
LT1109  
1.20  
1.25  
1.30  
LT1109-5; 3V V 5V  
LT1109-12; 3V V 12V  
4.75  
11.52  
5.00  
12.00  
5.25  
12.55  
V
V
OUT  
IN  
IN  
Comparator Hysteresis  
Output Voltage Ripple  
LT1109  
8
12.5  
mV  
LT1109-5  
LT1109-12  
25  
60  
50  
120  
mV  
mV  
f
t
Oscillator Frequency  
Switch ON Time  
100  
90  
120  
4.2  
50  
140  
150  
kHz  
kHz  
OSC  
ON  
3.3  
3.0  
5.3  
5.5  
µs  
µs  
DC  
Duty Cycle  
Full Load  
45  
60  
%
V
CESAT  
Switch Saturation Voltage  
I
= 500mA  
SW  
0.4  
0.5  
0.7  
0.8  
V
V
LT1109-5: V = 3V; LT1109-12: V = 5V  
IN  
IN  
2