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參數(shù)資料
| 型號： | TDA3661AT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Very low dropout voltage/quiescent current adjustable voltage regulator |
| 中文描述： | 1.5 V-45 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.3 V DROPOUT, PDSO8 |
| 封裝： | 3.90 MM, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 88K |
| 代理商： | TDA3661AT |
9397 750 15049
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 05 — 28 June 2005
4 of 16
Philips Semiconductors
TDA3661
Very low dropout voltage/quiescent current voltage regulator
10. Characteristics
[1]
The output voltage can be calculated using the following formula:
where
and
[2]
The regulator output will follow V
P
if V
P
< V
REG
+ V
REG(drop)
11. Application information
11.1 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 7
.
Table 6:
V
P
= 14.4 V; T
amb
= 25
°
C; k = 4.01929
[1]
; measured with test circuit of
Figure 15
; unless otherwise specified.
Symbol
Parameter
Conditions
Supply voltage: pin V
P
V
P
supply voltage
regulator operating
I
q
quiescent supply current
V
P
= 4.5 V; I
REG
= 0 mA
V
P
= 14.4 V; I
REG
= 0 mA
6 V
≤
V
P
≤
24 V; I
REG
= 10 mA
6 V
≤
V
P
≤
24 V; I
REG
= 50 mA
Regulator output: pin REG
V
REG
output voltage
8 V
≤
V
P
≤
22 V; I
REG
= 0.5 mA
0.5 mA
≤
I
REG
≤
100 mA
6 V
≤
V
P
≤
45 V; I
REG
= 0.5 mA
V
REG(drop)
dropout voltage
V
P
= 4.5 V; T
amb
≤
85
°
C;
I
REG
= 50 mA
V
REG(stab)
output voltage long-term
stability
V
REG(adj)
output voltage adjustment
range
V
REG(line)
line input regulation voltage 7 V
≤
V
P
≤
22 V; I
REG
= 0.5 mA
7 V
≤
V
P
≤
45 V; I
REG
= 0.5 mA
V
REG(load)
load output regulation
voltage
SVRR
supply voltage ripple
rejection
I
REG
= 0.5 mA
V
ref
reference voltage
V
P
= 14.4 V
I
REG(crl)
output current limit
V
REG
> 4 V
I
LO(rp)
output leakage current at
reverse polarity
Characteristics
Min
Typ
Max
Unit
[2]
3
14.4
10
15
0.2
1.4
45
30
30
0.5
2.5
V
μ
A
μ
A
mA
mA
-
-
-
-
4.8
4.75
4.75
-
5.0
5.0
5.0
0.18
5.2
5.25
5.25
0.3
V
V
V
V
per 1000 h
-
20
-
mV
1.5
-
V
P
V
-
-
-
1
1
10
30
50
50
mV
mV
mV
0.5 mA
≤
I
REG
≤
50 mA
f
i
= 120 Hz;V
i(ripple)
= 1 V (RMS);
50
60
-
dB
1.181
0.17
-
1.244
0.3
1
1.306
-
500
V
A
μ
A
V
P
=
15 V; V
REG
=
≤
0.3 V
V
REG
V
ref
k
×
=
k
-------------------
=
R1
R2
100 k
≤
+
Table 7:
Output current
I
REG
(mA)
Noise figures
Noise figure (
μ
V)
C2 = 10
μ
F
550
650
C2 = 47
μ
F
320
400
C2 = 100
μ
F
300
400
0.5
50
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