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

str-s6703

Manufacturer Part Number

str-s6703

Description

Off-line Switching Regulators ? With Bipolar Switching Transisto

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.STR-S6703.pdf (8 pages)

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Supply Voltage, V

Output Voltage, V

Continuous Output Current,

1 ms Single-Pulse Output Current,

Sink Current, I

Drive Current, I

Feedback Current, I

Inhibit Voltage, V

Over-Current Protection Voltage Range,

Insulation Voltage,V

Package Power Diss., P

Output Junction Temperature, T

Internal Frame Temperature, T

Operating Temperature Range,

Storage Temperature Range,

ABSOLUTE MAXIMUM RATINGS

OVER-CURRENT

PROTECTION

COLLECTOR

EBO

OCP

stg

.......................................... See Table

COMMON

............................... -20 C to +125 C

........................................ See Table

INHIBIT

............................. -40 C to +125 C

DRIVE

BASE

FDBK

SINK

................................................ 7 V

............................................ 3.5 V

V IN

................................. 1.5 A

.......................... -700 mA

INH

CEX

DRIVE

FDBK

........................... 15 V

WM(RMS)

....................... 500 V

................. 20 mA

........ See Graph

OSC.

........... 2000 V

– WITH BIPOLAR SWITCHING TRANSISTOR

... +125 C

.. +150 C

FAULT

LATCH

UVLO

REF.

Dwg. PK-001

OFF-LINE SWITCHING REGULATORS

STR-S6703

STR-S6704

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.

time are fixed during manufacture. Local control circuit decoupling and

layout are optimized within each device.

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.

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

Always order by complete part number:

™

Part Number

STR-S6703

STR-S6704

Quasi-Resonant Operation for Low EMI and High Efficiency

Output Power to 140 W

Low-Power Output Standby Mode

Pulse-by-Pulse Over-Current Protection

Latched Over-Voltage and Thermal Protection

Third-Generation Switching Transistor with Proportional Drive

Maximum ON Time and OFF Time Set During Manufacture

Internal Under-Voltage Lockout with Hysteresis

Over-Molded SIP with Integral Isolated Heat Spreader

The STR-S6703 and STR-S6704 are specifically designed to meet

Crucial system parameters such as maximum ON time and OFF

Cycle-by-cycle current limiting, under-voltage lock-out with hyster-

Proven in substantial volumes, these devices and their fixed-

Max. Cont.

Current, I

6 A

5 A

AND

Current, I

Peak

12 A

10 A

Related parts for str-s6703

str-s6703 Summary of contents

Page 1

... STR-S6703 STR-S6704 OFF-LINE SWITCHING REGULATORS 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. ...

Page 2

... Dwg. GK-003-3 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1994 Allegro MicroSystems, Inc. PROPORTIONAL DRIVE 1 k 0.7 0. 5.1 V MAXIMUM SAFE OPERATING AREA STR-S6703 (12 A) STR-S6704 ( 2 0 100 < 1% 100 ...

Page 3

... V CEX STR-S6703 CE(sat) C STR-S6704 STR-S6703 BE(sat) C STR-S6704 STR-S6703 STR-S6704 off V OCP(th) V FDBK(th) V Oscillation stops INH(th) Oscillation synchronized Oscillation stops (fault latch set reduced from 10 ...

Page 4

... STR-S6703 STR-S6704 AND OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS 100 5.0 3.0 1.0 0.01 TYPICAL CHARACTERISTICS 0.1 1.0 0.03 0.3 3.0 COLLECTOR CURRENT in AMPERES 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 STR-S6703 10 100 30 Dwg. GK-001-3 ™ ...

Page 5

... Nm). Recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease: Dow Corning 340, or equivalent WARNING: lethal potentials are present. See text APPLICATIONS INFORMATION STR-S6703 AND QUASI-RESONANT FLYBACK SWITCHING REGULATORS + + STR-S6704 ...

Page 6

... STR-S6703 STR-S6704 AND OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS 0.033 +0.008 Ð0.004 Dimensions in Inches (for reference only) 0.953 0.008 T REF. M 0.610 0.130 0.008 ¿ 0.008 0.118 0.276 0.016 9 1 0.016 0.100 0.004 0.177 0.028 PACKAGE LEAD CENTER CENTER NOTE: Exact body and lead configuration at vendorÕs option within limits shown. ...

Page 7

... Dimensions in Millimeters (controlling dimensions) 24.2 0 15.5 0.2 3.3 ¿ 3.0 0 0.4 2.54 0.85 0.1 +0.2 Ð0.1 PACKAGE LEAD CENTER CENTER NOTE: Exact body and lead configuration at vendorÕs option within limits shown. STR-S6703 AND QUASI-RESONANT FLYBACK SWITCHING REGULATORS REF 5.5 0.2 3.3 0.1 7.0 0.4 5.5 0.65 +0.2 Ð0.1 4.5 0.7 Dwg. MK-003-9 mm STR-S6704 OFF-LINE ...

Page 8

... STR-S6703 STR-S6704 AND OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS POWER CONVERSION/POWER MANAGEMENT SWITCHING REGULATOR PMCMs Part Number* Application * Complete part number includes additional characters to indicate operating temperature range and/or package style. † Also includes linear regulator output for 15 1.0 A. SELECTION GUIDES V Max P ...

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