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参数资料
| 型号： | DC1453A |
| 厂商： | Linear Technology |
| 文件页数： | 5/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LTM4619 |
| 软件下载： | LTM4619 Spice Model |
| 设计资源： | DC1453A Design Files DC1453A Schematic |
| 标准包装： | 1 |
| 系列： | LTM®, uModule® |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 2，非隔离 |
| 输出电压： | 1.8V，3.3V |
| 电流 - 输出： | 4A |
| 输入电压： | 4.5 ~ 28 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 500kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | LTM4619 |
| 相关产品： | LTM4619IV#PBF-ND - IC SWIT REG BUCK 4A ADJ 144LGA LTM4619EV#PBF-ND - IC SWIT REG BUCK 4A ADJ 144LGA |
LTM4619
TYPICAL PERFORMANCE CHARACTERISTICS
(Refer to Figures 18 and 19)
I OUT
1A/DIV
V OUT
50mV/DIV
1.2V Output Transient Response
I OUT
1A/DIV
V OUT
50mV/DIV
1.5V Output Transient Response
I OUT
1A/DIV
V OUT
50mV/DIV
2.5V Output Transient Response
100μs/DIV
4619 G04
100μs/DIV
4619 G05
100μs/DIV
4619 G06
I OUT
1A/DIV
V OUT
50mV/DIV
6V IN 1.2V OUT AT 2A/μs LOAD STEP
f = 780kHz
C OUT 2 × 22μF, 6.3V X5R CERAMIC
C OUT 1 × 330μF, 6.3V SANYO POSCAP
3.3V Output Transient Response
V IN
1V/DIV
I IN
0.5A/DIV
6V IN 1.5V OUT AT 2A/μs LOAD STEP
f = 780kHz
C OUT 2 × 22μF, 6.3V X5R CERAMIC
C OUT 1 × 330μF, 6.3V SANYO POSCAP
Start-Up, I OUT = 0A
V IN
1V/DIV
I IN
0.5A/DIV
6V IN 2.5V OUT AT 2A/μs LOAD STEP
f = 780kHz
C OUT 2 × 22μF, 6.3V X5R CERAMIC
C OUT 1 × 330μF, 6.3V SANYO POSCAP
Start-Up, I OUT = 4A
100μs/DIV
4619 G07
20ms/DIV
4619 G08
20ms/DIV
4619 G09
6V IN 3.3V OUT AT 2A/μs LOAD STEP
f = 780kHz
C OUT 2 × 22μF, 6.3V X5R CERAMIC
C OUT 1 × 330μF, 6.3V SANYO POSCAP
V IN = 12V, V OUT = 2.5V, I OUT = 0A
C OUT = 2 × 22μF 10V
AND 1 × 100μF 6.3V CERAMIC CAPs
C SOFTSTART = 0.1μF
USE RUN PIN TO CONTROL START-UP
V IN = 12V, V OUT = 2.5V,
I OUT = 4A RESISTIVE LOAD
C OUT = 2 × 22μF 10V,
AND 1 × 100μF 6.3V CERAMIC CAPs
C SOFTSTART = 0.1μF
USE RUN PIN TO CONTROL START-UP
V OUT
1V/DIV
Short Circuit, I OUT = 0A
V OUT
1V/DIV
Short Circuit, I OUT = 4A
I IN
0.5A/DIV
I IN
0.5A/DIV
50μs/DIV
V IN = 12V, V OUT = 2.5V, I OUT = 0A
C OUT = 2 × 22μF 10V,
AND 1 × 100μF 6.3V CERAMIC CAPs
4619 G10
50μs/DIV
V IN = 12V, V OUT = 2.5V, I OUT = 4A
C OUT = 2 × 22μF 10V,
AND 1 × 100μF 6.3V CERAMIC CAPs
4619 G11
4619fb
For more information www.linear.com/LTM4619
5
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