str-s6707 Allegro MicroSystems, Inc., str-s6707 Datasheet - Page 2

• Manufacturer Part Number: str-s6707
• Description: Off-line Switching Regulators ? With Bipolar Switching Transisto
• Manufacturer: Allegro MicroSystems, Inc.

STR-S6707 AND STR-S6708 FUNCTIONAL BLOCK DIAGRAM
ALLOWABLE PACKAGE POWER DISSIPATION
STR-S6707
OFF-LINE
QUASI-RESONANT FLYBACK
SWITCHING REGULATORS
40
20
60
0
3.2 W
FDBK
54 W
20
7
FREE AIR
3300 pF
R ton
THRU
MOUNTING SURFACE
TEMPERATURE
60
UVLO
REF.
TEMPERATURE in C
TSD
V
9
IN
STR-S6709
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-003-2
FAULT
LATCH
Q
+
+
+
+
0.5
5.0
3.0
1.0
0.3
30
10
INHIBIT
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
= 2.5 A (STR-S6707/08) or 3 A (STR-S6709)
= 0.8 A (STR-SA6707/08) or 1.2 A (STR-S6709)
= 100 s
PROPORTIONAL
-1 V
STR-S6709 (20 A)
STR-S6708 (15 A)
STR-S6707 (12 A)
200
DRIVE
COLLECTOR-EMITTER VOLTAGE in VOLTS
400
0.7
1 k
600
5
4
1
3
2
6
800
DRIVE
SINK
BASE
COLLECTOR
COMMON
OVER-CURRENT
PROTECTION
Dwg. FK-001
™
Dwg. GK-002
1000