Datasheet

TLE 4471
Data Sheet 3 Rev. 1.6, 2009-02-03
Figure 2 Pin Configuration (top view)
Table 1 Pin Definitions and Functions
Pin No. Symbol Function
1, 10, 11,
20
GND GROUND; all four pins connected to the heat sink
2E1Enable 1; Enable for Main Output Q1 and Q2; E1, E2 and E3 are
ored together; connect to GND, if not needed.
3IInput; block to ground directly at the IC for line compensation.
4Q2Tracking Output Q2; block to GND with min. 10 µF with
ESR < 3 Ω.
5REF2Reference Output; Reference Voltage related to Q2.
6RReset Output; the open collector Output is connected to Q1 via an
integrated resistor.
7DRReset Delay; connect a capacitor to GND for reset delay time
adjustment.
8E2Enable 2; Enable for Main Output Q1 and Q2; E1, E2 and E3 are
ored together; connect to GND, if not needed.
9Q1Main Output Q1; block to GND with min. 22 µF, ESR < 3 Ω.
12 RADJ Reset Switching Threshold Adjust; The reset threshold can be
set individually with an external voltage divider at the pin. If it is
connected straight to GND the reset threshold remains at 4.65 V.
13 NC Not Connected
AEP02865
20
E1 2
3
4
5
I
Q2
REF2
R6
7
8
DR
E2
Q1 9
10GND
19
18
17
16
15
14
13
12
11
GND GND
DW
W
Q3
E3
EN
GND
1
RADJ
N.C.
REF3