TDA3664_7 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 07 — 25 June 2007 6 of 16
NXP Semiconductors
TDA3664
Very low dropout voltage/quiescent current 5 V voltage regulator
[1] The regulator output will follow V
P
if V
P
<V
REG
+V
REG(drop)
[2] TDA3664TT: I
REG
≤ 15 mA at T
amb
≤ 125 °C; I
REG
≤ 30 mA at T
amb
≤ 85 °C.
11. Application information
11.1 Noise
The output noise is determined by the value of the output capacitor (see Table 7).
[1] Measured at a bandwidth of 10 Hz to 100 kHz
11.2 Stability
For stable operation:
• The maximum output capacitor ESR should not exceed 22 Ω (worst-case) and for the
minimum ESR, see Table 8.
• The ESR of the output capacitor is limited.
• See Table 8 for the minimum ESR values of the output capacitor, at T
amb
given the
load and output capacitance.
Regulator output: pin REG
V
REG
output voltage 8 V ≤ V
P
≤ 22 V; I
REG
= 0.5 mA 4.8 5.0 5.2 V
6V≤ V
P
≤ 45 V; I
REG
= 0.5 mA 4.75 5.0 5.25 V
0.5 mA ≤ I
REG
≤ 100 mA
[2]
4.75 5.0 5.25 V
6V≤ V
P
≤ 45 V 4.75 5.0 5.25 V
V
REG(drop)
dropout voltage V
P
= 4.5 V; I
REG
= 50 mA; T
amb
≤ 85 °C - 0.18 0.3 V
V
REG(stab)
output voltagelong-term
stability
per 1000 h - 20 - mV
∆V
REG(line)
line regulation voltage 8 V ≤ V
P
≤ 16 V; I
REG
= 0.5 mA - 1 10 mV
7V≤ V
P
≤ 22 V; I
REG
= 0.5 mA - 1 30 mV
7V≤ V
P
≤ 45 V; I
REG
= 0.5 mA - 1 50 mV
∆V
REG(load)
load regulation voltage 0.5 mA ≤ I
REG
≤ 50 mA - 10 50 mV
SVRR supply voltage ripple
rejection
f
i
= 120 Hz; V
i(ripple)
= 1 V (RMS);
I
REG
= 0.5 mA
50 60 - dB
I
REG(crl)
current limit V
REG
> 4.5 V 0.17 0.25 A
I
LO(rp)
output leakage current
at reverse polarity
V
P
= −15 V; V
REG
= ≤ 0.3 V - 1 500 µA
Table 6: Characteristics
…continued
V
P
= 14.4 V; T
amb
=25
°
C; measured with test circuit of Figure 15; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Table 7: Noise figures
Output current
I
O
(mA)
Noise figure (µV)
[1]
C2=10µF C2=47µF C2 = 100 µF
0.5 550 320 300
50 650 400 400
