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参数资料
| 型号： | LT1173CS8#TR |
| 厂商： | Linear Technology |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST INV ADJ 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），升压（升压），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 50 V |
| 输入电压： | 2 V ~ 30 V |
| 频率 - 开关： | 23kHz |
| 电流 - 输出： | 400mA |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
LT1173
A BSOLUTE
A XI U
R A TI G S
PACKAGE/ORDER I FOR ATIO
Supply Voltage (V IN ) ................................................ 36V
SW1 Pin Voltage (V SW1 ) .......................................... 50V
SW2 Pin Voltage (V SW2 ) ............................. – 0.5V to V IN
Feedback Pin Voltage (LT1173) ................................. 5V
Sense Pin Voltage (LT1173, -5, -12) ....................... 36V
Maximum Power Dissipation ............................. 500mW
Maximum Switch Current ....................................... 1.5A
Operating Temperature Range ..................... 0 ° C to 70 ° C
Storage Temperature Range .................. –65 ° C to 150 ° C
Lead Temperature, (Soldering, 10 sec.)................ 300 ° C
TOP VIEW
I LIM 1 8 FB (SENSE)*
V IN 2 7 SET
SW1 3 6 AO
SW2 4 5 GND
N8 PACKAGE
8-LEAD PLASTIC DIP
*FIXED VERSIONS
T JMAX = 90 ° C, θ JA = 130 ° C/W
TOP VIEW
ORDER PART
NUMBER
LT1173CN8
LT1173CN8-5
LT1173CN8-12
LT1173CS8
I LIM 1
8 FB (SENSE)*
LT1173CS8-5
Consult factory for Industrial and Military grade parts
V IN 2
SW1 3
SW2 4
7 SET
6 AO
5 GND
LT1173CS8-12
S8 PART MARKING
S8 PACKAGE
8-LEAD PLASTIC SOIC
*FIXED VERSIONS
T JMAX = 90 ° C, θ JA = 150 ° C/W
ELECTRICAL C HARA C TERISTICS T A = 25 ° C, V IN = 3V, unless otherwise noted.
1173
11735
117312
SYMBOL
I Q
I Q
PARAMETER
Quiescent Current
Quiescent Current, Boost
CONDITIONS
Switch Off
No Load
LT1173-5
q
MIN
TYP
110
135
MAX
150
UNITS
μ A
μ A
Mode Configuration
LT1173-12
250
μ A
V IN
Input Voltage
Step-Up Mode
q
2.0
12.6
V
Step-Down Mode
q
30
V
Comparator Trip Point Voltage
LT1173 (Note 1)
q
1.20
1.245
1.30
V
V OUT
Output Sense Voltage
Comparator Hysteresis
Output Hysteresis
LT1173-5 (Note 2)
LT1173-12 (Note 2)
LT1173
LT1173-5
q
q
q
q
4.75
11.4
5.00
12.0
5
20
5.25
12.6
10
40
V
V
mV
mV
LT1173-12
q
50
100
mV
f OSC
Oscillator Frequency
q
18
23
30
kHz
Duty Cycle
Full Load
q
43
51
59
%
t ON
V OL
Switch ON Time
Feedback Pin Bias Current
Set Pin Bias Current
Gain Block Output Low
Reference Line Regulation
I LIM tied to V IN
LT1173, V FB = 0V
V SET = V REF
I SINK = 100 μ A, V SET = 1.00V
2.0V ≤ V IN ≤ 5V
q
q
q
q
q
17
22
10
20
0.15
0.2
32
50
100
0.4
0.4
μ s
nA
nA
V
%/V
5V ≤ V IN ≤ 30V
q
0.02
0.075
%/V
V SAT
SW SAT Voltage, Step-Up Mode
V IN = 3.0V, I SW = 650mA
q
0.5
0.65
V
V IN = 5.0V, I SW = 1A
q
0.8
1.0
1.4
V
V
2
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