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参数资料
| 型号： | DC1307A |
| 厂商： | Linear Technology |
| 文件页数： | 16/22页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LTM8027 |
| 软件下载： | LTM8027 Spice Model |
| 设计资源： | DC1307A Design Files DC1307A Schematic |
| 标准包装： | 1 |
| 系列： | LTM®, uModule® |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 功率 - 输出： | 48W |
| 输出电压： | 12V |
| 电流 - 输出： | 4A |
| 输入电压： | 16 ~ 60 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 300kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | LTM8027 |
| 相关产品： | LTM8027IV#PBF-ND - IC BUCK SYNC ADJ 4A 113LGA LTM8027MPV#PBF-ND - IC BUCK SYNC ADJ 4A 113LGA LTM8027EV#PBF-ND - IC BUCK SYNC ADJ 4A 113LGA |
LTM8027
APPLICATIONS INFORMATION
The junction-to-air and junction-to-board thermal resis-
tances given in the Pin Configuration diagram may also
be used to estimate the LTM8027 internal temperature.
These thermal coefficients are determined per JESD 51-9
(JEDEC standard, test boards for area array surface mount
package thermal measurements) through analysis and
physical correlation. Bear in mind that the actual thermal
resistance of the LTM8027 to the printed circuit board
depends upon the design of the circuit board.
The die temperature of the LTM8027 must be lower than
the maximum rating of 125°C, so care should be taken in
the layout of the circuit to ensure good heat sinking of the
LTM8027. The bulk of the heat flow out of the LTM8027
is through the bottom of the module and the LGA pads
into the printed circuit board. Consequently a poor printed
circuit board design can cause excessive heating, result-
ing in impaired performance or reliability. Please refer to
the PCB Layout section for printed circuit board design
suggestions.
Table 2. Recommended Component Values and Configuration
(T A = 25°C. See Typical Performance Characteristics for load Conditions)
V IN RANGE
(V)
V OUT
(V)
C IN
C OUT
BIAS1
R ADJ
(kΩ)
f OPTIMAL
(kHz)
R OPTIMAL
(kΩ)
f MAX
(kHz)
R MAX
(kΩ)
4.5 to 60
7.5 to 60
3.3
5
2 × 4.7μF 2220 100V 5 × 100μF 1812 6.3V
2 × 4.7μF 2220 100V 4 × 100μF 1210 6.3V
8.5V to 15V
8.5V to 15V
301
162
115
210
154
75.0
160
230
107
68.2
10.5 to 60
16 to 60
20.5 to 60
26 to 60
34 to 60
4.5 to 40
4.5 to 40
7.5 to 40
10.5 to 40
16 to 40
20.5 to 40
26 to 40
34 to 40
8
12
15
18
24
2.5
3.3
5
8
12
15
18
24
2 × 4.7μF 2220 100V
2 × 4.7μF 2220 100V
2 × 4.7μF 2220 100V
2 × 4.7μF 2220 100V
2 × 4.7μF 2220 100V
2 × 10μF 2220 50V
2 × 10μF 2220 50V
2 × 10μF 2220 50V
2 × 10μF 2220 50V
2 × 10μF 2220 50V
1 × 10μF 2220 50V
1 × 10μF 2220 50V
1 × 10μF 2220 50V
4 × 47μF 1210 10V
4 × 22μF 1210 16V
4 × 22μF 1210 16V
4 × 10μF 1812 25V
4 × 10μF 1812 25V
5 × 100μF 1812 6.3V
4 × 100μF 1812 6.3V
4 × 100μF 1210 6.3V
4 × 47μF 1210 10V
4 × 22μF 1210 16V
4 × 22μF 1210 16V
4 × 10μF 1812 25V
4 × 10μF 1812 25V
8.5V to 15V
AUX
AUX
8.5V to 15V
8.5V to 15V
8.5V to 15V
8.5V to 15V
8.5V to 15V
8.5V to 15V
AUX
AUX
8.5V to 15V
8.5V to 15V
90.9
56.2
44.2
36.5
26.7
487
301
162
90.9
56.2
44.2
36.5
26.7
260
300
350
400
430
145
165
210
260
300
350
400
430
59.0
48.7
40.2
31.6
28.7
124
102
75.0
59.0
48.7
40.2
31.6
28.7
350
500
500
500
500
185
240
315
500
500
500
500
500
40.2
23.7
23.7
23.7
23.7
88.7
64.9
45.3
23.7
23.7
23.7
23.7
23.7
4.5 to 56
4.5 to 55
–3.3
–5
2 × 4.7μF 2220 100V 5 × 100μF 1812 6.3V 8.5V to 15V Above Output
2 × 4.7μF 2220 100V 4 × 100μF 1210 6.3V 8.5V to 15V Above Output
301
162
115
190
154
90.9
155
230
115
68.2
10.5 to 52
16 to 48
–8
–12
2 × 4.7μF 2220 100V
2 × 4.7μF 2220 100V
4 × 47μF 1210 10V
4 × 22μF 1210 16V
8.5V to 15V Above Output
AUX
90.9
56.2
260
300
59.0
48.7
350
500
40.2
23.7
8027fb
16
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