str-s6703 Allegro MicroSystems, Inc., str-s6703 Datasheet - Page 2

• Manufacturer Part Number: str-s6703
• Description: Off-line Switching Regulators ? With Bipolar Switching Transisto
• Manufacturer: Allegro MicroSystems, Inc.

FUNCTIONAL BLOCK DIAGRAM
ALLOWABLE PACKAGE POWER DISSIPATION
STR-S6703
OFF-LINE
QUASI-RESONANT FLYBACK
SWITCHING REGULATORS
40
20
60
0
STR-S6703 (54 W)
STR-S6704 (50 W)
3.2 W
FDBK
20
7
FREE AIR
3300 pF
R ton
AND
MOUNTING SURFACE
TEMPERATURE
UVLO
60
REF.
TSD
TEMPERATURE in C
V
9
IN
STR-S6704
RECOMMENDED MAX.
FRAME TEMP. = +100 C
OVER-VOLT.
PROTECT
100
LIMITED BY FRAME
TEMP. = +125 C MAX.
R toff
140
R
S
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1994 Allegro MicroSystems, Inc.
OSC.
Dwg. GK-003-3
FAULT
LATCH
Q
+
+
+
+
INHIBIT
0.5
5.0
3.0
1.0
0.3
30
10
0
8
L = 6 mH
I
I
t
dc < 1%
B1
B2
on
MAXIMUM SAFE OPERATING AREA
1.4 V
0.75 V
5.1 V
PROPORTIONAL
-1 V
= 100 s
= 2.5 A
= 0.8 A
100
STR-S6703 (12 A)
STR-S6704 (10 A)
DRIVE
COLLECTOR-EMITTER VOLTAGE in VOLTS
200
300
0.7
1 k
400
500
5
4
1
3
2
6
DRIVE
SINK
BASE
COLLECTOR
COMMON
OVER-CURRENT
PROTECTION
600
Dwg. FK-001
™
Dwg. GK-002-3
700