参数资料
| 型号： | LT1172MJ8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/24页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ 8CERDIP |
| 标准包装： | 50 |
| 类型： | 降压（降压），升压（升压），反相，Cuk，回扫，正向转换器 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 40 V |
| 输入电压： | 3 V ~ 40 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 100kHz |
| 电流 - 输出： | 1.25A |
| 同步整流器： | 无 |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-CDIP（0.300"，7.62mm） |
| 包装： | 管件 |
| 供应商设备封装： | 8-CERDIP |
LT1170/LT1171/LT1172
TYPICAL PERFORMANCE CHARACTERISTICS
16
Switch Current Limit vs Duty Cycle*
2.9
Minimum Input Voltage
1.6
Switch Saturation Voltage
12
8
–55°C
25°C
2.8
2.7
2.6
SWITCH CURRENT = I MAX
1.4
1.2
1.0
0.8
100°C
150°C
25°C
125°C
2.5
SWITCH CURRENT = 0A
0.6
–55°C
4
0.4
* DIVIDE VERTICAL SCALE BY TWO FOR
LT1171, BY FOUR FOR LT1172.
2.4
0.2
* DIVIDE CURRENT BY TWO FOR
LT1171, BY FOUR FOR LT1172.
0
0
10 20 30 40 50 60 70 80 90 100
2.3
–75 –50 –25
0
25
50
75 100 125 150
0
0
1
2
3
4 5 6
7
8
5
4
DUTY CYCLE (%)
Line Regulation
1170/1/2 G01
1.250
1.248
TEMPERATURE (°C)
1170/1/2 G02
Reference Voltage vs Temperature
800
700
SWITCH CURRENT (A)*
Feedback Bias Current
vs Temperature
1170/1/2 G03
3
2
1
T J = 150°C
1.246
1.244
600
500
0
–1
–2
T J = –55°C
T J = 25°C
1.242
1.240
1.238
400
300
200
–3
–4
1.236
100
–5
0
10
20
30 40
50
60
1.234
–75 –50 –25
0
25
50
75 100 125 150
0
–75 –50 –25
0
25
50
75 100 125 150
INPUT VOLTAGE (V)
1170/1/2 G04
Supply Current vs Supply Voltage
(Shutdown Mode)
TEMPERATURE (°C)
1170/1/2 G05
Driver Current* vs Switch Current
TEMPERATURE (°C)
1170/1/2 G06
Supply Current vs Input Voltage*
160
140
120
T J = 25°C
160
140
120
15
14
13
12
T J = 25°C
NOTE THAT THIS CURRENT DOES NOT
INCLUDE DRIVER CURRENT, WHICH IS
A FUNCTION OF LOAD CURRENT AND
100
80
V C = 50mV
100
80
T J = –55°C
11
10
DUTY CYCLE.
90% DUTY CYCLE
60
60
9
50% DUTY CYCLE
40
40
T J = ≥ 25°C
8
7
10% DUTY CYCLE
20
0
V C = 0V
20
0
6
5
0% DUTY CYCLE
0
10
20
30
40
50
60
0
1
2 3
4
5
0
10
20
30 40
50
60
SUPPLY VOLTAGE (V)
SWITCH CURRENT (A)
1170/1/2 G08
INPUT VOLTAGE (V)
1170/1/2 G09
6
1170/1/2 G07
* AVERAGE LT1170 POWER SUPPLY CURRENT IS
FOUND BY MULTIPLYING DRIVER CURRENT BY
DUTY CYCLE, THEN ADDING QUIESCENT CURRENT.
* UNDER VERY LOW OUTPUT CURRENT CONDITIONS,
DUTY CYCLE FOR MOST CIRCUITS WILL APPROACH
10% OR LESS.
117012fg
相关PDF资料 |
PDF描述 |
|---|---|
| LT1173CN8-12 | IC REG BUCK BST INV 12V .4A 8DIP |
| LT1175MPQ-5#TRPBF | IC REG LDO -5V .5A DDPAK-5 |
| LT1176CSW#TRPBF | IC REG MULTI CONFIG ADJ 20SOIC |
| LT1182IS#TRPBF | IC SW REG CCFL/LCD CONTRST16SOIC |
| LT1185IT#30PBF | IC REG LDO NEG ADJ 3A TO220-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1172MK | 制造商:Linear Technology 功能描述: |
| LT1172MK/883 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Current-Mode SMPS Controller |
| LT1172S8 | 制造商:LINER 制造商全称:Linear Technology 功能描述:100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators |
| LT1173 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1173-12 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
发布紧急采购，3分钟左右您将得到回复。