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参数资料
| 型号： | LTC1149CS-5#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 19/20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
TYPICAL APPLICATIO S
V IN
12V TO 36V
1N4148
10k
220 ?
+
1000 μ F
63V
2N3906
VN2222LL
470 ?
2N2222
0.1 μ F
0.1 μ F
1
2
3
PGATE
V IN
V CC
CAP
SHDM2
RGND
16
15
14
MUR110
MTP30N06EL L*
50 μ H
R SENSE **
0.02 ?
V OUT
5V/5A
4
PDRIVE
NGATE
13
IRFZ44
MBR380
+
220 μ F
10V × 2
5
6
V CC
C T
LTC1149-5
PGND
SGND
12
11
0V = NORMAL
>2V = SHUTDOWN
OS-CON
+
3.3 μ F
820pF
3300pF
7
8
I TH
SENSE –
SHDN1
SENSE +
10
9
100 ?
1k
1000pF
100 ?
1149 F16
*COILTRONICS CTX50-5-52
**DALE LVR-3-0.02
SEE APPLICATIONS INFORMATION TO SUPPRESS
Burst Mode TM OPERATION AT LOW CURRENTS
Figure 16. 25W High Efficiency Regulator Using N-Channel MOSFET Switches
PACKAGE DESCRIPTIO
Dimensions in inches (millimeters) unless otherwise noted.
N Package
16-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.770*
0.300 – 0.325
(7.620 – 8.255)
0.130 ± 0.005
(3.302 ± 0.127)
0.045 – 0.065
(1.143 – 1.651)
16
15
14
(19.558)
MAX
13 12
11
10
9
0.020
(0.508)
0.255 ± 0.015 *
0.009 – 0.015
(0.229 – 0.381)
MIN
0.065
(1.651)
TYP
(6.477 ± 0.381)
)
–0.381
(
+0.035
0.325 –0.015
+0.889
8.255
0.125
(3.175)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
0.018 ± 0.003
(0.457 ± 0.076)
1
2
3
4
5
6
7
8
N16 1197
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However,
no responsibility is assumed for its use. Linear Technology Corporation makes no representation that
the interconnection of its circuits as described herein will not infringe on existing patent rights.
19
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