2559
PROTECTED
QUAD POWER DRIVER
FUNCTIONAL BLOCK DIAGRAM
(1 of 4 Channels)
K
V
CC
OUT
N
ENABLE
IN
N
THERMAL
LIMIT
<<1 Ω
Dwg. FP-041
UDx2559EB
5
R
= 6°C/W
θJT
4
NC
SUFFIX 'EB', R
= 36°C/W
θJA
GROUND
5
25
24
23
22
GROUND
3
2
1
0
6
7
SUFFIX 'B', R
= 43°C/W
θJA
8
9
21
20
19
10
11
GROUND
GROUND
SUFFIX 'LB', R
50
= 90°C/W
V
NC
CC
θJA
75
100
125
150
25
°
TEMPERATURE IN C
Dwg. GP-004-2B
Dwg. PP-019-1
PD = (VOUT1 x IOUT1 x dc) + … + (VOUTn x IOUTn x dc)
+ (VCC x ICC) = (TJ - TA)/RθJA
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Copyright © 1995, 2002 Allegro MicroSystems, Inc.
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
