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TDA3663 Datasheet PDF : 17 Pages
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Philips Semiconductors
TDA3663
Very low dropout voltage/quiescent current 3.3 V voltage regulator
6.2 Pin description
Table 3:
Symbol
VP
GND
REG
n.c.
Pin description
Pin
SO4
1
2 and 4
3
-
SO8
8
2, 3, 6 and 8
1
4 and 5
Description
supply voltage
ground [1]
regulator output
not connected
[1] For he SO8 package all GND pins are connected to the lead frame and can also be used to reduce the total
thermal resistance Rth(j-a) by soldering these pins to a ground plane. The ground plane on the top side of
the PCB acts like a heat spreader.
7. Functional description
The TDA3663 is a fixed 3.3 V regulator which can deliver output currents up to 100 mA.
The regulator is available in SO8 and SO4 packages. The regulator is intended for
portable, mains and telephone applications. To increase the lifetime of batteries, a
specially built-in clamp circuit keeps the quiescent current of this regulator very low, also
in dropout and full load conditions.
The device remains operational down to very low supply voltages and below this voltage it
switches off.
A temperature protection circuit is included which switches off the regulator output at a
junction temperature above 150 °C.
8. Limiting values
Table 4: Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter
Conditions
Min
VP
supply voltage
-
VP(rp)
reverse polarity supply non-operating
-
voltage
Ptot
total power dissipation
TDA3663
temperature of copper
-
area is 25 °C
TDA3663AT
Tamb = 25 °C
-
Tstg
storage temperature
non-operating
−55
Tamb
ambient temperature operating
−40
Tj
junction temperature operating
−40
Max Unit
45
V
−25
V
4.1
W
5
W
+150 °C
+125 °C
+150 °C
9397 750 15047
Product data sheet
Rev. 05 — 13 June 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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