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TDA3661A Datasheet PDF : 16 Pages
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Philips Semiconductors
TDA3661
Very low dropout voltage/quiescent current voltage regulator
10. Characteristics
Table 6: Characteristics
VP = 14.4 V; Tamb = 25 °C; k = 4.01929 [1]; measured with test circuit of Figure 15; unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ Max Unit
Supply voltage: pin VP
VP
supply voltage
Iq
quiescent supply current
Regulator output: pin REG
regulator operating
VP = 4.5 V; IREG = 0 mA
VP = 14.4 V; IREG = 0 mA
6 V ≤ VP ≤ 24 V; IREG = 10 mA
6 V ≤ VP ≤ 24 V; IREG = 50 mA
[2] 3
-
-
-
-
14.4 45
V
10
30
µA
15
30
µA
0.2
0.5
mA
1.4
2.5
mA
VREG
VREG(drop)
VREG(stab)
output voltage
dropout voltage
output voltage long-term
stability
8 V ≤ VP ≤ 22 V; IREG = 0.5 mA
0.5 mA ≤ IREG ≤ 100 mA
6 V ≤ VP ≤ 45 V; IREG = 0.5 mA
VP = 4.5 V; Tamb ≤ 85 °C;
IREG = 50 mA
per 1000 h
4.8
5.0
5.2
V
4.75 5.0
5.25 V
4.75 5.0
5.25 V
-
0.18 0.3
V
-
20
-
mV
VREG(adj)
output voltage adjustment
range
1.5
-
VP
V
∆VREG(line)
∆VREG(load)
line input regulation voltage
load output regulation
voltage
7 V ≤ VP ≤ 22 V; IREG = 0.5 mA
7 V ≤ VP ≤ 45 V; IREG = 0.5 mA
0.5 mA ≤ IREG ≤ 50 mA
-
1
30
mV
-
1
50
mV
-
10
50
mV
SVRR
Vref
IREG(crl)
ILO(rp)
supply voltage ripple
rejection
reference voltage
output current limit
output leakage current at
reverse polarity
fi = 120 Hz; Vi(ripple) = 1 V (RMS);
IREG = 0.5 mA
VP = 14.4 V
VREG > 4 V
VP = −15 V; VREG = ≤ 0.3 V
50
60
-
dB
1.181 1.244 1.306 V
0.17 0.3
-
A
-
1
500
µA
[1] The output voltage can be calculated using the following formula: V REG = V ref × k where k = -R----1--R--+--2---R----2- and R1 + R2 ≤ 100 kΩ
[2] The regulator output will follow VP if VP < VREG + VREG(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 7: Noise figures
Output current
IREG (mA)
Noise figure (µV)
C2 = 10 µF
0.5
550
50
650
C2 = 47 µF
320
400
C2 = 100 µF
300
400
9397 750 15049
Product data sheet
Rev. 05 — 28 June 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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