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參數(shù)資料
| 型號： | SA57031-32 |
| 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/關(guān) |
| 文件頁數(shù)： | 9/13頁 |
| 文件大小： | 161K |
| 代理商： | SA57031-32 |
Philips Semiconductors
Product data
SA57031-XX
Micropower 150 mA, low-noise, low dropout linear
regulator with on/off
2003 Jun 23
9
APPLICATION INFORMATION
The following points have to be kept in mind for good performance
while using these devices.
Input Capacitor
An input capacitor of 2.2
μ
F is required between the SA57031 input
pin and the circuit ground. This capacitor must be located as close
as possible to the V
I
or GND pin (not more than 1 cm away from the
pin) and returned to a clean analog ground. Any good quality
ceramic, tantalum, or film capacitor will work.
Output Capacitor
Phase compensation is used for securing stable operation even if
the load current varies. For this reason, an output capacitor with
good frequency characteristics is needed. Set it as close to the
circuit as possible and make the wiring as short as possible. The
value of the output capacitance has to be at least 2.2
μ
F and has to
have B-type temperature characteristics.
ON/OFF (Chip Enable) Pin
The ON/OFF pin must be actively terminated, not floating. If the
function is not needed, the pin should be tied to V
I
to permanently
enable the device.
Line Impedance of V
I
and GND
The V
I
and GND lines should be sufficiently wide to minimize
impedance. If the impedance of these lines is high, there is a chance
to pick up noise or malfunction.
SA00632
B2
A1
B1
V
O
GND
C
O
C
I
2.2
μ
F
ON
A2
V
I
SA57031-XX
OFF
+
–
DC
2.0 V TO 6.0 V
R
LOAD
V
C
O
= 2.2 mF for V
O
= 2.5 to 5.0 V
C
O
= 4.7 mF for V
O
= 1.8 to 2.5 V
ON/OFF PIN MUST BE ACTIVELY TERMINATED
A
Figure 17. Typical application circuit.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA57031-32UK | Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-33 | Ceramic Multilayer Capacitor; Capacitance:22pF; Capacitance Tolerance:+/- 5 %; Working Voltage, DC:50V; Dielectric Characteristic:C0G/NP0; Package/Case:0603; Series:VJ; Leaded Process Compatible:Yes; Mounting Type:Surface Mount |
| SA57031-33UK | Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-34 | Micropower 150 mA, low-noise, low dropout linear regulator with on/off |
| SA57031-34UK | 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 |
|---|---|
| SA57031-32UK | 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 |
| SA57031-33 | 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 |
| SA57031-33UK | 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 |
| SA57031-34 | 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 |
| SA57031-34UK | 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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