str-s5707 Allegro MicroSystems, Inc., str-s5707 Datasheet

str-s5707

Manufacturer Part Number

str-s5707

Description

Off-line Switching Regulators ? With Bipolar Switching Transisto

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.STR-S5707.pdf (8 pages)

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BOSTOCK HK LIMITED

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STR-S5707

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OVER-CURRENT

Supply Voltage, V

Output Voltage, V

Continuous Output Current,

1 ms Single-Pulse Output Current,

Sink Current, I

Drive 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

PROTECTION

COLLECTOR

32 V SENSE

COMMON

EBO

OCP

stg

INHIBIT

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

DRIVE

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

BASE

SINK

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

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

V IN

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

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

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

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

INH

CEX

DRIVE

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

WM(RMS)

....................... 850 V

........ See Graph

OSC.

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

– WITH BIPOLAR SWITCHING TRANSISTOR

... +125 C

FAULT

LATCH

.. +150 C

FAULT

UVLO

REF.

Dwg. PK-004

OFF-LINE SWITCHING REGULATORS

™

STR-S5707

STR-S5708

the requirement for increased integration and reliability in off-line quasi-

resonant flyback converters with indirect feedback. Each device

incorporates 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

primary-side error amplifier with reference is included to facilitate

regulation from an auxiliary or bias winding of the power transformer. 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.

counterparts represents a significant advance in off-line SMPS reliability

growth and integration.

FEATURES

Always order by complete part number:

Part

Number

STR-S5707

STR-S5708

Quasi-Resonant Operation for Low EMI and High Efficiency

Low-Power Output Standby Mode

Indirect Feedback from Auxiliary Winding

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

Reduces External Component Count

The STR-S5707 and STR-S5708 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, this device and its fixed-frequency

Continuous, I

7.5 A

6 A

Output Current

Peak, I

12 A

15 A

Wide AC In 220/240 VAC In

AND

120 W

90 W

Output Power, P

140 W

180 W

Related parts for str-s5707

str-s5707 Summary of contents

Page 1

... STR-S5707 STR-S5708 OFF-LINE SWITCHING REGULATORS The STR-S5707 and STR-S5708 are specifically designed to meet the requirement for increased integration and reliability in off-line quasi- resonant flyback converters with indirect feedback. Each device incorporates the primary control and proportional drive circuit with a third-generation high-voltage bipolar switching transistor. ...

Page 2

... Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1994 Allegro MicroSystems, Inc. INHIBIT 6 PROPORTIONAL DRIVE 1 k 0. 5.1 V MAXIMUM SAFE OPERATING AREA STR-S5708 (15 A) STR-S5707 ( 2 0 100 < 1% 200 400 600 ...

Page 3

... Typical Data is for design information only. www.allegromicro.com = + Symbol Test Conditions V Turn-on, increasing V INT V Turn-off, decreasing V INQ V OVP(th 850 -1.5 V CEX STR-S5707 CE(sat) C STR-S5708 STR-S5707 BE(sat) C STR-S5708 ...

Page 4

... STR-S5707 STR-S5708 AND OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS 100 5.0 3.0 1.0 0.01 TYPICAL CHARACTERISTICS 0.03 0.1 0.3 1.0 3.0 COLLECTOR CURRENT in AMPERES 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 STR-S5708 STR-S5707 10 30 100 Dwg. GK-001-2 ™ ...

Page 5

... Nm). Recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease: Dow Corning 340, or equivalent www.allegromicro.com WARNING: lethal potentials are present. See below APPLICATIONS INFORMATION STR-S5707 STR-S5708 AND OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS + + ...

Page 6

... STR-S5707 STR-S5708 AND OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS 0.033 +0.008 Ð0.004 PACKAGE CENTER 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 LEAD CENTER NOTE: Exact body and lead configuration at vendorÕs option within limits shown. ...

Page 7

... PACKAGE www.allegromicro.com Dimensions in Millimeters (controlling dimensions) 24.2 0.2 T REF M 15.5 0.2 3.3 ¿ 3.0 0.2 7.0 0 0.4 2.54 0.65 0.1 +0.2 Ð0.1 LEAD CENTER CENTER NOTE: Exact body and lead configuration at vendorÕs option within limits shown. STR-S5707 STR-S5708 AND OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS 5.5 0.2 3.3 0.1 5.5 4.5 0.7 Dwg. MK-003-9 mm ...

Page 8

... STR-S5707 STR-S5708 AND OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS Part Number* Application 3002M 5 V switching regulator and switching regulator 3004M 5 V switching regulator and Dual 9 V switching regulator S5703 Quasi-resonant flyback converter S5707 Quasi-resonant flyback converter S5708 Quasi-resonant flyback converter S6703 ...

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