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TDA3673AT の電気的特性と機能

TDA3673ATのメーカーはNXP Semiconductorsです、この部品の機能は「Very low dropout voltage/quiescent current 3.3 V voltage regulator with enable」です。


製品の詳細 ( Datasheet PDF )

部品番号 TDA3673AT
部品説明 Very low dropout voltage/quiescent current 3.3 V voltage regulator with enable
メーカ NXP Semiconductors
ロゴ NXP Semiconductors ロゴ 




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TDA3673AT Datasheet, TDA3673AT PDF,ピン配置, 機能
INTEGRATED CIRCUITS
DATA SHEET
TDA3673
Very low dropout voltage/quiescent
current 3.3 V voltage regulator with
enable
Preliminary specification
Supersedes data of 1999 Sep 29
File under Integrated Circuits, IC01
2000 Feb 01

1 Page





TDA3673AT pdf, ピン配列
Philips Semiconductors
Very low dropout voltage/quiescent current
3.3 V voltage regulator with enable
BLOCK DIAGRAM
Preliminary specification
TDA3673
handbook, halfpage
VP
8
5
EN BAND GAP
1
REGULATOR
REG
TDA3673
THERMAL
PROTECTION
2, 3, 6, 7
GND
MGS593
Fig.1 Block diagram.
PINNING
SYMBOL
PIN
DESCRIPTION
REG
GND
n.c.
EN
VP
1
2, 3, 6 and 7
4
5
8
regulator output
ground; note 1
not connected
enable input
supply voltage
Note
1. All GND pins are connected to the lead frame and can
also be used to reduce the total thermal resistance
Rth(j-a) by soldering these pins to a ground plane.
The ground plane on the top side of the PCB acts like
a heat spreader.
handbook, halfpage
REG 1
GND 2
GND 3
n.c. 4
8 VP
7 GND
TDA3673
6 GND
5 EN
MGS594
2000 Feb 01
Fig.2 Pin configuration.
3


3Pages


TDA3673AT 電子部品, 半導体
Philips Semiconductors
Very low dropout voltage/quiescent current
3.3 V voltage regulator with enable
TEST AND APPLICATION INFORMATION
Preliminary specification
TDA3673
andbook, halfpage
VP C1(1)
1 µF
VI (EN)
81
TDA3673
VREG = 3.3 V
C2
10 µF
5
2, 3, 6, 7
MGS595
VI(EN) = 5 V.
(1) C1 is optional (to minimize supply noise only).
Fig.3 Test circuit.
102
handbook, halfpage
ESR
()
10
1
MDA961
(1)
stable region
101
101
(2)
1
10 C2 (µF) 102
(1) Maximum ESR at 200 µA IREG 100 mA.
(2) Minimum ESR only when IREG 200 µA.
Fig.4 Graph for selecting the value of the output
capacitor.
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
OUTPUT
CURRENT
IREG (mA)
0.5
50
NOISE FIGURE (µV)
C2 = 10 µF C2 = 47 µF C2 = 100 µF
550 320 300
650 400 400
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.
handbook1, 0h3alfpage
ESR
()
102
22
10
1
101
1
stable region
10
MDA962
102 103
IREG (mA)
Fig.5 ESR as a function of IREG for selecting the
value of the output capacitor.
2000 Feb 01
6

6 Page



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部品番号部品説明メーカ
TDA3673AT

Very low dropout voltage/quiescent current 3.3 V voltage regulator with enable

NXP Semiconductors
NXP Semiconductors


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