STR-S5708 Allegro, STR-S5708 Datasheet - Page 2

• Manufacturer Part Number: STR-S5708
• Description: Off-Line Switching Regulators with Bipolar Switching Transistor
• Manufacturer: Allegro

FUNCTIONAL BLOCK DIAGRAM
ALLOWABLE PACKAGE POWER DISSIPATION
STR-S5707
OFF-LINE
QUASI-RESONANT FLYBACK
SWITCHING REGULATORS
40
20
60
SENSE
0
3.2 W
54 W
7
20
1500 pF
FREE AIR
AND
MOUNTING SURFACE
TEMPERATURE
60
TEMPERATURE in C
STR-S5708
RECOMMENDED MAX.
FRAME TEMP. = +100 C
3300 pF
R ton
UVLO
100
REF.
TSD
V IN
9
LIMITED BY FRAME
TEMP. = +125 C MAX.
OVER-VOLT.
PROTECT
140
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1994 Allegro MicroSystems, Inc.
Dwg. GK-003-2
R toff
R
S
OSC.
LATCH
FAULT
0.5
5.0
3.0
1.0
0.3
30
10
Q
0
+
+
+
+
L = 6 mH
I
I
t
dc < 1%
B1
B2
on
INHIBIT
MAXIMUM SAFE OPERATING AREA
= 2.5 A
= 0.8 A
= 100 s
STR-S5708 (15 A)
STR-S5707 (12 A)
6
200
1.4 V
0.75 V
5.1 V
PROPORTIONAL
-1 V
COLLECTOR-EMITTER VOLTAGE in VOLTS
DRIVE
400
600
1 k
800
8
4
1
3
2
5
DRIVE
SINK
BASE
COLLECTOR
COMMON
OVER-CURRENT
PROTECTION
™
Dwg. GK-002-1A
Dwg. FK-001-1
1000