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參數(shù)資料
| 型號： | MB3788 |
| 廠商： | FUJITSU LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 0.03 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 13/21頁 |
| 文件大小： | 750K |
| 代理商： | MB3788 |
13
MB3788
I
HOW TO SET OUTPUT CURRENT
The output circuit is configured in a push-pull type as shown in Figure 1. The ON current value of the output current waveform shown in Figure
2 is a constant current and the OFF value set by RE is set by a time constant. Each output current can be calculated from the following expression:
ON current = 1.5/R
E
(A) (Output current setting pin voltage: V
E
≈
1.5 V)
The OFF current time constant is proportional to the value of C
B
.
OFF current
setting part
R
E
C
B
Drive Tr
OFF
current
ON current
Output
ON current
OFF current
t
22
μ
H
(5 V)
3
150
1000 pF
4
5
1
V
CC
I
out
1000 pF
10
μ
F
-IN1 (E)
8.2 k
-IN1 (C)
MB3788
2
Fig.1 Output Circuit Diagram
Fig.2 Output Current Waveform
Fig.3 Output Pin Voltage and Current Waveforms (Channel 1)
Fig.4 Measurement Circuit Diagram
V
E
2.7 k
V
out
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB3789 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:Switching Regulator Controller (Supporting External Synchronization) |
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