參數(shù)資料
型號(hào)： TDA3674
廠商： NXP Semiconductors N.V.
英文描述： Very low dropout voltage/quiescent current 5V voltage regulator with enable(帶使能端的低壓差/靜態(tài)電流5V電壓穩(wěn)壓器)
中文描述： 非常低壓差電壓/靜態(tài)電流，5V穩(wěn)壓器具有使能（帶使能端的低壓差/靜態(tài)電流5V的電壓穩(wěn)壓器）
文件頁(yè)數(shù)： 6/16頁(yè)
文件大?。?/td> 83K
代理商： TDA3674
2000 Feb 01
6
Philips Semiconductors
Preliminary specification
Low dropout voltage/quiescent current 5 V
voltage regulator with enable
TDA3674
TEST AND APPLICATION INFORMATION
andbook, halfpage
MGS599
8
1
2, 3, 6, 7
C2
10
μ
F
VI(EN)
5
TDA3674
C1
(1)
1
μ
F
VREG = 5 V
Fig.3 Test circuit.
V
I(EN)
= 5 V.
(1) C1 is optional (to minimize supply noise only).
handbook, halfpage
MDA961
ESR
(
)
C2 (
μ
F)
2
10
1
10
1
10
1
1
10
10
2
stable region
(2)
(1)
Fig.4
Graph 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.
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 4 and 5.
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.5
ESR as a function of I
REG
for selecting the
value of the output capacitor.
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TDA3674AT 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low dropout voltage/quiescent current 5 V voltage regulator with enable
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TDA3674T 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low dropout voltage/quiescent current 5 V voltage regulator with enable
TDA3675 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low dropout voltage/quiescent current 8.5 V voltage regulator with enable
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