TDA3605Q Просмотр технического описания (PDF) - Philips Electronics
Номер в каталоге
Компоненты Описание
производитель
TDA3605Q Datasheet PDF : 16 Pages
| |||
Philips Semiconductors
Multiple voltage regulator with switch
Preliminary specification
TDA3605Q
TEST AND APPLICATION INFORMATION
Test information
handbook, full pagewidth
VP
C1 (1)
220 nF
VP
1
Ven(sw)
enable input power switch
7
Vsw
13
regulator 2
11
Ven1
Ven3
enable input regulator 1
6
regulator 1
2
enable input regulator 3
TDA3605Q
4
regulator 3
3
C2
220 nF
5V
C3
10 µF
10 V
C4
10 µF
5V
C5
10 µF
reset
capacitor
9
C7
47 nF
back-up
capacitor
12
Vbu
R1
1 kΩ
C8
220 nF
10
GND
reset
output
5
hold
output
8
R2
10 kΩ
C6
1 µF
R3
10 kΩ
MGB754
RL(sw)
1 kΩ
RL(REG2)
1 kΩ
RL(REG1)
1 kΩ
RL(REG3)
1 kΩ
(1) Capacitor not required for stability.
Fig.6 Test circuit.
Application information
NOISE
Table 1 Noise figures
NOISE FIGURE (µV)(1)
REGULATOR
at OUTPUT CAPACITOR
10 µF
47 µF
100 µF
1
−
150
−
2
−
150
−
3
−
200
−
Note
1. Measured at a bandwidth of 200 kHz.
The noise on the supply line depends on the value of the
supply capacitor and is caused by a current noise (output
noise of the regulators is translated into a current noise by
means of the output capacitors).
When a high frequency capacitor of 220 nF in parallel with
an electrolytic capacitor of 100 µF is connected directly to
pins 3 and 8 (supply and ground) the noise is minimal.
STABILITY
The regulators are made stable with the externally
connected output capacitors. The value of the output
capacitors can be selected by referring to the graphs
illustrated in Figs 7 and 8.
1997 Jul 09
12
Share Link: 