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PDF STR-S6704 Data sheet ( Hoja de datos )
| Número de pieza | STR-S6704 | |
| Descripción | OFF-LINE SWITCHING REGULATORS WITH BIPOLAR SWITCHING TRANSISTOR | |
| Fabricantes | Allegro | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de STR-S6704 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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STR-S6703 AND
STR-S6704
OFF-LINE SWITCHING REGULATORS
– WITH BIPOLAR SWITCHING TRANSISTOR
COLLECTOR 1
COMMON 2
BASE 3
SINK 4
DRIVE 5
OVER-CURRENT
PROTECTION
6
FDBK 7
INHIBIT 8
VIN 9
DRIVE
OSC.
FAULT
S
FAULT
LATCH
R
REF.
UVLO
Dwg. PK-001
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VIN ........................... 15 V
Output Voltage, VCEX ....................... 500 V
VEBO ................................................ 7 V
Continuous Output Current,
IC .......................................... See Table
1 ms Single-Pulse Output Current,
ICM ........................................ See Table
Sink Current, IS ................................. 1.5 A
Drive Current, ID .......................... -700 mA
Feedback Current, IFDBK ................. 20 mA
Inhibit Voltage, VINH ........................... 15 V
Over-Current Protection Voltage Range,
VOCP ............................................ ±3.5 V
Insulation Voltage,VWM(RMS) ........... 2000 V
Package Power Diss., PD ........ See Graph
Output Junction Temperature, TJ .. +150°C
Internal Frame Temperature, TF ... +125°C
Operating Temperature Range,
TA ............................... -20°C to +125°C
Storage Temperature Range,
Tstg ............................. -40°C to +125°C
The STR-S6703 and STR-S6704 are specifically designed to meet
the requirement for increased integration and reliability in off-line quasi-
resonant flyback converters. These devices incorporate the primary
control and proportional drive circuit with a third-generation high-voltage
bipolar switching transistor.
Crucial system parameters such as maximum ON time and OFF
time are fixed during manufacture. Local control circuit decoupling and
layout are optimized within each device.
Cycle-by-cycle current limiting, under-voltage lock-out with hyster-
esis, over-voltage protection, and thermal shutdown protect these
devices during all normal and overload conditions. Over-voltage
protection and thermal shutdown are latched after a short delay. A
versatile triple-level inhibit circuit includes the OFF time synchronization
required to establish quasi-resonant operation. The inhibit function has
also been expanded to initiate operation in stand-by mode in which the
power supply delivers a small fraction of the steady-state output power.
The dual requirements of dielectric isolation and low transient thermal
impedance and steady-state thermal resistance are satisfied in an over-
molded single-in-line power package.
Proven in substantial volumes, these devices and their fixed-
frequency counterparts represent a significant advance in off-line SMPS
reliability growth and integration. Similar devices, with an output
voltage rating of 850 V and output power ratings to 220 W, are available
as the STR-S6707 thru STR-S6709.
FEATURES
I Quasi-Resonant Operation for Low EMI and High Efficiency
I Output Power to 140 W
I Low-Power Output Standby Mode
I Pulse-by-Pulse Over-Current Protection
I Latched Over-Voltage and Thermal Protection
I Third-Generation Switching Transistor with Proportional Drive
I Maximum ON Time and OFF Time Set During Manufacture
I Internal Under-Voltage Lockout with Hysteresis
I Over-Molded SIP with Integral Isolated Heat Spreader
Always order by complete part number:
Part Number
Max. Cont.
Current, IC
Peak
Current, ICM
STR-S6703
STR-S6704
6A
5A
12 A
10 A
™
1 page  
STR-S6703 AND STR-S6704
OFF-LINE
QUASI-RESONANT FLYBACK
SWITCHING REGULATORS
TYPICAL QUASI-RESONANT FLYBACK CONVERTER
WARNING: lethal potentials are present. See text.
9
+
7
R
SQ
8
+
+
+
+
5
4
3
1
2
6
#
+ OUTPUT
+
VOLTAGE
SENSE
– OUTPUT
Dwg. EK-004A
APPLICATIONS INFORMATION
WARNING — These devices are designed to be operated at lethal voltages and energy levels. Circuit
designs that embody these components must conform with applicable safety requirements. Precau-
tions must be taken to prevent accidental contact with power-line potentials. Do not connect
grounded test equipment.
The use of an isolation transformer is recommended during circuit development and breadboarding.
Recommended mounting hardware torque:
4.34 – 5.79 lbf•ft (6 – 8 kg•cm or 0.588 – 0.784 Nm).
Recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease:
Dow Corning 340, or equivalent
www.allegromicro.com
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet STR-S6704.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| STR-S6703 | OFF-LINE SWITCHING REGULATORS WITH BIPOLAR SWITCHING TRANSISTOR | Allegro |
| STR-S6704 | OFF-LINE SWITCHING REGULATORS WITH BIPOLAR SWITCHING TRANSISTOR | Allegro |
| STR-S6707 | OFF-LINE SWITCHING REGULATORS WITH BIPOLAR SWITCHING TRANSISTOR | Allegro |
| STR-S6708 | OFF-LINE SWITCHING REGULATORS WITH BIPOLAR SWITCHING TRANSISTOR | Allegro |
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