参数资料
型号: LTC1149CS#TRPBF
厂商: Linear Technology
文件页数: 17/20页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 16-SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 250kHz
占空比: 100%
电源电压: 最高 48V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: 0°C ~ 70°C
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
LTC1149
LTC1149-3.3/LTC1149-5
TYPICAL APPLICATIO S
V IN
5.5V TO 25V
1N4148
1N4148
Si9435DY
+
220 μ F
35V
0.047 μ F
0.068 μ F
1
2
3
4
PGATE
V IN
V CC
PDRIVE
CAP
SHDN2
RGND
NGATE
16
15
14
13
Si9410DY
L*
33 μ H
1N5818
R SENSE **
0.05 ?
+
V OUT
5V/2A
220 μ F
10V × 2
AVX
5
V CC
LTC1149-5
PGND
12
6
C T
S-GND
11
SENSE
+
1 μ F
220pF
3300pF
7
8
I TH
SENSE
SHDN1
+
10
9
SHUTDOWN
1k
1000pF
1149 F12
*COILTRONICS CTX33-4 Kool M μ
**KRL SL-1-C1-0R050J
Figure 12. Ultra Wide Input Range (5.5V to 25V) High Efficiency 5V Regulator
V IN
8V TO 16V
1N4148
1N4148
Si9430DY
+
100 μ F
25V
0.047 μ F
0.068 μ F
1
2
3
PGATE
V IN
V CC
CAP
SHDN2
RGND
16
15
14
L*
22 μ H
R SENSE **
0.05 ?
+
V OUT
5V/2A
220 μ F
4
PDRIVE
NGATE
13
Si9410DY
1N5818
10V
AVX
5
6
V CC
C T
LTC1149-5
PGND
SGND
12
11
+
1 μ F
180pF
3300pF
7
8
I TH
SENSE –
SHDN1
SENSE +
10
9
SHUTDOWN
1k
1000pF
1149 F13
*DALE LPE-6562-220MB
**KRL SL-1-C1-0R050J
Figure 13. 250kHz High Efficiency 12V Input 5V/2A Output Regulator
17
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