參數(shù)資料
型號: TDA3604TH
廠商: NXP SEMICONDUCTORS
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Multiple voltage regulators with external reset delay and switch(外部帶有復(fù)位延遲和開關(guān)轉(zhuǎn)換的多路輸出電壓穩(wěn)壓器)
中文描述: DUAL OUTPUT, FIXED POSITIVE REGULATOR, PDSO20
封裝: HEAT SINK, POWER, PLASTIC, SOT-418-3, SOP-20
文件頁數(shù): 13/20頁
文件大小: 129K
代理商: TDA3604TH
1997 Aug 21
13
Philips Semiconductors
Product specification
Multiple voltage regulators with external
reset delay and switch
TDA3604Q; TDA3604TH
TEST AND APPLICATION INFORMATION
Fig.7 Test circuit (for DBS13P package; SOT141-6).
(1) Capacitor not required for stability.
handbook, full pagewidth
MBE238
regulator 2
output
regulator 1
output
reset
output
C3
10
μ
F
C2
10
μ
F
power switch
output
C1
220 nF
C4
10
μ
F
C5
1
μ
F
C7
47 nF
ignition output
47 k
R2
1 k
1 k
5 V
8.5 V
RL(sw)
1 k
RL(REG1)
1 k
RL(REG2)
13
11
4
5
8
6
9
12
3
7
2
10
TDA3604Q
ground
power switch
input
power switch
enable input
regulator 1
enable input
ignition input
reset delay capacitor
VP
supply voltage
Ven(sw)
Vl(sw)
C5
220 nF
(1)
(1)
R1
1 k
Ven(REG1)
VI(ig)
R3
Noise information
The noise at the output of the regulators depends on the
bandwidth of the regulators, which can be adjusted by the
output capacitors. Table 1 shows the noise figures.
Although stability is guaranteed when C
L
is higher than
10
μ
F (over temperature range) with tan (
φ
) = 1 in the
frequency range 1 to 10 kHz, however, for low noise, a
47
μ
F load capacitor is required.
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
the output capacitors). When a high frequency capacitor of
220 nF with an electrolytic capacitor of 100
μ
F in parallel is
placed directly over V
P
and GND (pins of supply voltage
and ground) the noise is minimized.
Table 1
Noise figures
Note
1.
Bandwidth of 100 kHz.
REGULATOR
NOISE (
μ
V)
(1)
OUTPUT
CAPACITOR (
μ
F)
10
47
100
10
47
100
1
180
100
80
120
70
70
2
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