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参数资料
| 型号： | LT1111IS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/16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： | 可调 |
| 输入电压： | 2 V ~ 30 V |
| 频率 - 开关： | 72kHz |
| 电流 - 输出： | 400mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 105°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 |
LT1111
TYPICAL PERFOR A CE C HARA C TERISTICS
Maximum Switch Current
400
Quiescent Current
500
Quiescent Current
1.5
vs R LIM
380
360
340
450
400
1.4
1.3
1.2
1.1
320
300
280
260
240
220
350
300
250
200
150
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
STEP-DOWN
V IN = 12V
STEP-UP
2V ≤ V IN ≤ 5V
200
0
3
6
9 12 15 18 21 24 27 30
100
–50
–25
0 25 50 75
100
125
0.1
10
100
1000
INPUT VOLTAGE (V)
LT1111 ? TPC10
Set Pin Bias Current
100
90
80
70
60
50
40
30
20
10
TEMPERATURE ( ° C)
LT1111 ? TPC11
Feedback Bias Current
100
90
80
70
60
50
40
30
20
10
R LIM ( ? )
LT1111 ? TPC12
0
–50
–25
0 25 50 75
100
125
0
–50
–25
0 25 50 75
100
125
TEMPERATURE ( ° C)
LT1111 ? TPC13
TEMPERATURE ( ° C)
LT1111 ? TPC14
PI FU C TI
S
I LIM (Pin 1): Connect this pin to V IN for normal use. Where
lower current limit is desired, connect a resistor between
I LIM and V IN . A 220 ? resistor will limit the switch current
to approximately 400mA.
V IN (Pin 2): Input Supply Voltage.
SW1 (Pin 3): Collector of Power Transistor. For step-up
mode connect to inductor/diode. For step-down mode
connect to V IN .
SW2 (Pin 4): Emitter of Power Transistor. For step-up
mode connect to ground. For step-down mode connect to
inductor/diode. This pin must never be allowed to go more
GND (Pin 5): Ground.
A0 (Pin 6): Auxiliary Gain Block (GB) Output. Open collector,
can sink 300 μ A.
SET (Pin 7): GB Input. GB is an op amp with positive input
connected to SET pin and negative input connected to
1.25V reference.
FB/SENSE (Pin 8): On the LT1111 (adjustable) this pin
goes to the comparator input. On the LT1111-5 and
LT1111-12, this pin goes to the internal application resistor
that sets output voltage.
than a Schottky diode drop below ground.
1111fd
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1111M | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1111MJ8 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1111MJ8-12 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1111MJ8-5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1112 | 制造商:LINEAR 制造商全称:LINEAR 功能描述:Dual/Quad Low Power Precision, Picoamp Input Op Amps |
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