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參數(shù)資料
| 型號(hào)： | SA57031-XXUK |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| 中文描述： | 微功耗為150 mA，低噪聲，低壓差線性穩(wěn)壓器的開(kāi)/關(guān) |
| 文件頁(yè)數(shù)： | 8/13頁(yè) |
| 文件大小： | 161K |
| 代理商： | SA57031-XXUK |
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Philips Semiconductors
Product data
SA57031-XX
Micropower 150 mA, low-noise, low dropout linear
regulator with on/off
2003 Jun 23
8
TECHNICAL DISCUSSION
As illustrated in Figure 16, the SA57031 consists of a band-gap
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 V
O
pin.
The reference is connected to the error amplifier’s 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 pass transistor’s gate is pulled lower,
which allows more current to pass to the output and increase the
output voltage. If the feedback voltage is too high, the pass
transistor gate is pulled up, allowing less current to pass to the
output, resulting in a decrease in output voltage.
SA00634
2
4
1
3
SA57031-XX
V
O
GND
ON/OFF
V
I
V
REF
CURRENT
LIMITER
Figure 16. Block diagram (bottom view).
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相關(guān)代理商/技術(shù)參數(shù) |
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| SA570C-2206 | 制造商:Elan 功能描述:TOUCH PAD |
| SA571 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:最新版 PDF質(zhì)量 |
| SA5711 | 制造商:AUK 制造商全稱:AUK corp 功能描述:LED Lamp |
| SA5711B | 制造商:AUK 制造商全稱:AUK corp 功能描述:LED Lamp |
| SA571D | 功能描述:音頻放大器 Dual Gain Compandor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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