Datasheet

9397 750 15049 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 05 — 28 June 2005 9 of 16
Philips Semiconductors
TDA3661
Very low dropout voltage/quiescent current voltage regulator
12. Test information
12.1 Quality information
The General Quality Specification for Integrated Circuits, SNW-FQ-611 is applicable.
12.2 Test circuit
V
P
= 8 V and pulsed load I
REG
= 10 mA; C2 = 10 µF.
(1) SVRR at R
L
= 100 Ω.
(2) SVRR at R
L
= 500 Ω.
(3) SVRR at R
L
=10kΩ.
Fig 13. Fold back protection mode Fig 14. Supply voltage ripple rejection as a function of
the ripple frequency
0
6
4
2
0
100
V
REG
(V)
I
REG
(mA)
200 300
mda954
−70
−60
−50
−40
−30
mda956
10
SVRR
(dB)
f (Hz)
10
2
10
3
10
4
10
5
(1)
(1)
(2)
(2)
(3)
(3)
C1 is optional (to minimize supply noise only)
Fig 15. Test circuit
mgs581
V
P
81
2, 3, 6, 7
V
REG
= 5 V
C2
5
TDA3661
75.1 kΩ
10 µF
C1
(1)
1 µF
R1
24.9 kΩ
R2