参数资料
型号: LT1377IS8#PBF
厂商: Linear Technology
文件页数: 4/12页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ 8SOIC
标准包装: 100
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 ~ 35 V
输入电压: 2.7 V ~ 25 V
PWM 型: 电流模式
频率 - 开关: 1MHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
供应商设备封装: 8-SOIC
产品目录页面: 1327 (CN2011-ZH PDF)
LT1372/LT1377
TYPICAL PERFOR A CE CHARACTERISTICS
Shutdown Delay and Threshold
vs Temperature
Minimum Synchronization
Voltage vs Temperature
Error Amplifier Output Current
vs Feedback Pin Voltage
20
18
16
14
SHUTDOWN THRESHOLD
2.0
1.8
1.6
1.4
3.0
2.5
2.0
f SYNC = 700kHz (LT1372)
f SYNC = 1.4MHz (LT1377)
400
300
200
125 ° C
25 ° C
– 55 ° C
12
10
1.2
1.0
1.5
LT1377
100
8
6
4
2
SHUTDOWN DELAY
0.8
0.6
0.4
0.2
1.0
0.5
LT1372
0
–100
–200
0
–50 –25
0
25
50
75
0
100 125 150
0
–50 –25
0
25
50
75
100 125 150
–300
–0.3
–0.2
–0.1
V REF
0.1
TEMPERATURE ( ° C)
S/S Pin Input Current
vs Voltage
LT1372 ? G04
TEMPERATURE ( ° C)
Switching Frequency
vs Feedback Pin Voltage
LT1372 ? G05
FEEDBACK PIN VOLTAGE (V)
LT1372 ? G06
Error Amplifier Transconductance
vs Temperature
5
4
V IN = 5V
110
100
2000
1800
g m =
? I (V C )
? V (FB)
3
2
1
0
–1
–2
–3
–4
90
80
70
60
50
40
30
20
1600
1400
1200
1000
800
600
400
200
–5
–1
0
1
2
3
4
5
6
7
8
9
10
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
0
–50 –25
0
25
50
75
100 125 150
S/S PIN VOLTAGE (V)
LT1372 ? G07
V C Pin Threshold and High
Clamp Voltage vs Temperature
FEEDBACK PIN VOLTAGE (V)
Feedback Input Current
vs Temperature
LT1372 ? G08
TEMPERATURE ( ° C)
LT1372 ? G09
Negative Feedback Input Current
vs Temperature
2.4
2.2
2.0
V C HIGH CLAMP
800
700
V FB =V REF
0
–10
V NFB =V NFR
1.8
600
1.6
1.4
500
400
–20
1.2
1.0
0.8
0.6
V C THRESHOLD
300
200
100
–30
–40
0.4
–50 –25
0
25
50
75
100 125 150
0
–50 –25
0
25
50
75
100 125 150
–50
–50 –25
0
25
50
75
100 125 150
4
TEMPERATURE ( ° C)
LT1372 ? G10
TEMPERATURE ( ° C)
LT1372 ? G11
TEMPERATURE ( ° C)
LT1372 ? G12
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