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參數(shù)資料
| 型號： | TDA3668 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Very low dropout voltage/quiescent current 5 V regulator with overvoltage switch off |
| 中文描述： | 非常低壓差電壓/靜態(tài)電流5伏的電壓調(diào)節(jié)器關掉 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 84K |
| 代理商： | TDA3668 |
2000 Feb 01
6
Philips Semiconductors
Preliminary specification
Very low dropout voltage/quiescent current
5 V regulator with overvoltage switch off
TDA3668AT
TEST AND APPLICATION INFORMATION
handbook, halfpage
MGS591
8
1
2, 3, 6, 7
C2
10
μ
F
TDA3668AT
C1
(1)
1
μ
F
VREG = 5 V
Fig.4 Test circuit.
(1) C1 is optional (to minimize supply noise only).
Fig.5
Curve for selecting the value of the output
capacitor.
(1) Maximum ESR at 200
μ
A
≤
I
REG
≤
100 mA.
(2) Minimum ESR only when I
REG
≤
200
μ
A.
handbook, halfpage
MDA961
ESR
(
)
C2 (
μ
F)
2
10
1
10
1
10
1
1
10
10
2
stable region
(2)
(1)
Noise
The output noise is determined by the value of the output
capacitor. The noise figure is measured at a bandwidth of
10 Hz to 100 kHz (see Table 1).
Table 1
Noise figures
Stability
The regulator is stabilized with an external capacitor
connected to the output. The value of this capacitor can be
selected using the diagrams shown in Figs 5 and 6.
The following four examples show the effects of the
stabilization circuit using different values for the output
capacitor.
OUTPUT
CURRENT
I
REG
(mA)
0.5
50
NOISE FIGURE (
μ
V)
C2 = 10
μ
F
C2 = 47
μ
F
C2 = 100
μ
F
550
650
320
400
300
400
handbook, halfpage
MDA962
ESR
(
)
IREG (mA)
3
10
2
10
22
1
10
1
1
10
10
3
10
2
stable region
Fig.6
ESR as a function of I
REG
for selecting the
value of the output capacitor.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TDA3668AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Very low dropout voltage/quiescent current 5 V regulator with overvoltage switch off |
| TDA3672 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Very low dropout voltage/quiescent current 3.0 V voltage regulator with enable |
| TDA3672AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Very low dropout voltage/quiescent current 3.0 V voltage regulator with enable |
| TDA3673 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Very low dropout voltage/quiescent current 3.3 V voltage regulator with enable |
| TDA3673AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Very low dropout voltage/quiescent current 3.3 V voltage regulator with enable |
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