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参数资料
| 型号： | LTC1149CS-5#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 20/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-SOIC |
| 标准包装： | 50 |
| 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： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
LTC1149
LTC1149-3.3/LTC1149-5
PACKAGE DESCRIPTIO
Dimensions in inches (millimeters) unless otherwise noted.
S Package
16-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.386 – 0.394 *
(9.804 – 10.008)
0.010 – 0.020
(0.254 – 0.508)
× 45 °
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
16
15
14
13
12
11
10
9
0.008 – 0.010
(0.203 – 0.254)
0 ° – 8 ° TYP
0.228 – 0.244
0.150 – 0.157**
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
0.050
(1.270)
TYP
(5.791 – 6.197)
(3.810 – 3.988)
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
1
2
3
4
5
6
7
8
S16 0695
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
TYPICAL APPLICATIO N
V IN
20V TO 30V
1N4148
1N4148
MTP23P06
+
220 μ F
50V
0.047 μ F
0.068 μ F
1
2
3
PGATE
V IN
V CC
CAP
SHDN2
RGND
16
15
14
SHUTDOWN
L*
100 μ H
R2
172k
+
V OUT
12V/3A
150 μ F
16V × 2
4
PDRIVE
NGATE
13
MTP36N06E
MBR160
1%
OS-CON
5
V CC
LTC1149
PGND
12
+
3.3 μ F
300pF
3300pF
1k
6
7
8
C T
I TH
SENSE –
SGND
V FB
SENSE +
11
10
9
100pF
1000pF
100 ?
100 ?
R1
20k
1%
R SENSE **
0.033 ?
OUTPUT
GROUND
CONNECTION
RELATED PARTS
*HURRICANE LAB HL-EK210M
**KRL SL-1-C1-0R033J
Figure 17. High Efficiency 24V Input 12V/3A Output Regulator
1149 F17
PART NUMBER
LTC1148HV
LTC1159
LTC1435A
LTC1438
DESCRIPTION
High Efficiency, Synchronous Step-Down Switching Regulator
High Efficiency, Synchronous Step-Down Switching Regulator
High Efficiency, Low Noise, Synchronous Switching Regulator
Dual, Low Noise, Synchronous Switching Regulator
COMMENTS
4V < V IN < 20V
4V < V IN < 40V, I SHUTDOWN = 20 μ A
3.5V < V IN < 36V, N-Channel Driver
3.5V < V IN < 36V, N-Channel Driver
20
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX: (408) 434-0507 q www.linear-tech.com
1149fa LT/TP 0898 REV A 2K ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 1993
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