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參數(shù)資料
| 型號(hào)： | SA57026D |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 300 mA LDO with ON/OFF control and independent delayed RESET function |
| 中文描述： | 300毫安LDO穩(wěn)壓器的ON / OFF控制和獨(dú)立的延遲復(fù)位功能 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 87K |
| 代理商： | SA57026D |
Philips Semiconductors
Product data
SA57026
300 mA LDO with ON/OFF control and
independent delayed RESET function
2
2003 Oct 13
GENERAL DESCRIPTION
The SA57026 has an extremely precise fixed output with a typical
accuracy of
±
2%. It is designed to provide very low dropout and low
noise in CD-ROM drives, battery-operated systems, and portable
computers applications. This regulator consists of an internal
voltage reference, an error amplifier, a driver with current limiter, and
a thermal shut-down mechanism.
An Active-LOW RESET is assered when the detected voltage
(V
DET
) falls below the reset voltage threshold. The RESET output
remains low for 30
μ
s (typical) when zero capacitance connected to
Cd pin. The reset time delay can be adjusted by replacing
cpacitance values from Cd pin to Ground.
The device is available in the 7-pin small outline package (SOP002).
FEATURES
Very low dropout voltage: 500 mV typ. (I
out
= 50 mA)
High precision output voltage:
±
2%
Output current capacity: 300 mA
Low noise: 40 mV
rms
typ. @ 20 Hz to 80 KHz and for C
n
= 10 nF
Extremely good line regulation: 10 mV typical
Extremely good load regulation: 20 mV typical
Low temperature drift co-efficient to V
out
:
±
100 ppm/
°
C
Internal current limit and thermal shut-down circuits
Adjustment-free reset detection voltage: 4.2 V typ.
Delay time can be adjusted by external capacitor
Wide operating temperature range: –40
°
C to +85
°
C
APPLICATIONS
CD-ROM drives
Electronic notebooks, PDAs and palmtop computers
Cameras, VCRs and camcorders
PCMCIA cards
Modems
Battery-operated or hand-held instruments
BLOCK DIAGRAM
2
1
7
5
4
THERMAL
PROTECT
3
V
IN
V
OUT
RESET
GND
Cd
ON/OFF
SL01528
Figure 1. Block diagram.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA57026F | 300 mA LDO with ON/OFF control and independent delayed RESET function |
| SA57031-39UK | Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-45UK | Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-25 | Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-25UK | Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA57026F | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:300 mA LDO with ON/OFF control and independent delayed RESET function |
| SA57031-18UK | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-24UK | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-25 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-25UK | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
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