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參數(shù)資料
| 型號： | SA57005DH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Multiple output low noise, low dropout linear regulator |
| 中文描述： | TRIPLE OUTPUT, FIXED POSITIVE LDO REGULATOR, PDSO8 |
| 封裝： | VSOP-8 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 148K |
| 代理商： | SA57005DH |
Philips Semiconductors
Product data
SA57005
Multiple output low noise, low dropout linear regulator
2002 Jun 20
7
TECHNICAL DISCUSSION
As illustrated in the circuit diagram, each of the regulators in the
SA57005 consists of a voltage reference, an error amplifier,
P-channel pass transistor, current limit circuit and an internal
feedback voltage divider. The output voltage is fed back through an
internal resistor voltage divider connected to the output voltage pins.
The reference will be activated if any of the PS1 and PS2/3 switches
is turned on.
The reference is connected to the error amplifier’s non-inverting
input. The error amplifier compares the reference with the feedback
voltage and amplifies the difference. If the feedback voltage is lower
than the reference voltage the output of the error amplifier goes up,
which pulls down the pass transistor’s gate. This allows more
current to pass to the output and increase the output voltage. On the
other hand, if the feedback voltage is too high the pass transistor
gate is pulled up, allowing less current to pass to the output,
resulting a decrease in output voltage.
SL01705
5 V
o3
8 GND
6 V
o2
7 V
o1
2
PS2/3
1
PS1
TERMINAL
PROTECT
4
V
IN
Figure 10. Functional diagram.
相關PDF資料 |
PDF描述 |
|---|---|
| SA57022-18D | 500 mA LDO with ON/OFF control and Vref bypass |
| SA57022-25D | 500 mA LDO with ON/OFF control and Vref bypass |
| SA57022-28D | 500 mA LDO with ON/OFF control and Vref bypass |
| SA57022-30D | 500 mA LDO with ON/OFF control and Vref bypass |
| SA57022-33D | 500 mA LDO with ON/OFF control and Vref bypass |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SA57022-18D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:500 mA LDO with ON/OFF control and Vref bypass |
| SA57022-25D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:500 mA LDO with ON/OFF control and Vref bypass |
| SA57022-28D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:500 mA LDO with ON/OFF control and Vref bypass |
| SA57022-30D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:500 mA LDO with ON/OFF control and Vref bypass |
| SA57022-33D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:500 mA LDO with ON/OFF control and Vref bypass |
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