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A6169 Schematic ( PDF Datasheet ) - Allegro

Teilenummer A6169
Beschreibung STR-A6169
Hersteller Allegro
Logo Allegro Logo 




Gesamt 7 Seiten
A6169 Datasheet, Funktion
SwRitecghuinlagtors
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Control Supply Voltage, VCC . . . . 35 V
Drain-Source Voltage, VDSS . . . . . . 800 V
Drain Switching Current, ID . . . . 1.2 A*
Peak Drain Switching Current,
IDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 A
Single-Pulse Avalanche Energy,
EAS . . . . . . . . . . . . . . . . . . . . . 7 mJ
Start-Up Pin Voltage Range,
Vstartup . . . . . . . . . –0.3 V to +600 V
OCP Voltage Range,
VOCP . . . . . . . . . . . . –0.5 V to +6 V
FB/OLP Voltage Range,
VFB/OLP . . . . . . . . . . –0.5 V to +10 V
Package Power Dissipation, PD
control (VCC × ICC(ON)) . . . . . 0.15 W
MOSFET (VDSS × ID) . . . . . . 1.35 W
total . . . . . . . . . . . . . . . . . . . . 1.5 W
MOSFET Channel Temp., TJ . +150°C
Internal Frame Temp., TF . . . . +125°C
Operating Temperature Range,
TA . . . . . . . . . . . -20°C to +125°C†
Storage Temperature Range,
TS . . . . . . . . . . . . -40°C to +125°C
* Drain switching current is limited by temperature
(page 2) and safe operating area (page 4).
†For the availability of parts meeting -40°C
requirements, contact Allegro’s Sales Represen-
tative.
STR-A6169
Universal-Input/5 W
Flyback Switching Regulator
The STR-A6169 is a PRC topology (fixed off-time) regulator
specifically designed to satisfy the requirements for increased integration
and reliability in flyback converters. It incorporates a primary control
and drive circuit with avalanche-rated 800 V power MOSFET.
Covering the power range from below 8 watts for a 230 VAC input,
or 5 watts for a universal (85 to 264 VAC) input, this device can be used
in a range of applications, from DVD and VCR players to ac adapters
for cellular phones and digital cameras. An auto-standby function
reduces power consumption at light load, while multiple protections,
including the avalanche-energy guaranteed MOSFET, provide high
reliability of system design. Devices with an increased output power
rating are the STR-A6151 and STR-A6159.
Cycle-by-cycle current limiting, undervoltage lockout with hyster-
esis, overvoltage protection, and thermal shutdown protect the power
supply during the normal overload and fault conditions. Overvoltage
protection and thermal shutdown are latched after a short delay. The
latch may be reset by cycling the input supply. Low start-up current and
a low-power standby mode selected from the secondary circuit completes
a comprehensive suite of features. The STR-A6169 is provided in an 8-
pin mini-DIP plastic package.
FEATURES AND BENEFITS
Rugged 800 V Avalanche-Rated MOSFET
Simplified Surge Absorption
No VDSS Derating Required
19.2 rDS(on)
Two Operational Modes by Automatic Switching:
PRC Mode for Normal Operation
Burst Mode for Stand-By Operation or Light Loads
Built-In Leading Edge Blanking
Low Start-Up Current
Start-Up Circuit Disabled in Operation
Low Operating Current (1.5 mA typ)
Automatic Burst Stand-By (intermittent operation)
Input Power <0.1 W at No Load
— continued
Always order by complete part number, e.g., STR-A6169 .
Sanken Power Devices
from Allegro MicroSystems
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A6169 Datasheet, Funktion
STR-A6169
Universal-Input/5 W
Flyback Switching Regulator
APPLICATIONS INFORMATION
SwRitecghuinlagtors
Typical Application
Complete product description and applications information
is provided in Application Note 28102.20, Series STR-
A6100 Flyback Switching Regulators.
The products described herein are manufactured in Japan by Sanken
Electric Co., Ltd. for sale by Allegro MicroSystems, Inc.
Sanken and Allegro reserve the right to make, from time to time, such
departures from the detail specifications as may be required to permit
improvements in the performance, reliability, or manufacturability of its
products. Therefore, the user is cautioned to verify that the information
in this publication is current before placing any order.
When using the products described herein, the applicability and
suitability of such products for the intended purpose shall be reviewed at
the users responsibility.
Although Sanken undertakes to enhance the quality and reliability of
its products, the occurrence of failure and defect of semiconductor
products at a certain rate is inevitable.
Users of Sanken products are requested to take, at their own risk,
preventative measures including safety design of the equipment or
systems against any possible injury, death, fires or damages to society
due to device failure or malfunction.
Sanken products listed in this publication are designed and intended
for use as components in general-purpose electronic equipment or
apparatus (home appliances, office equipment, telecommunication
equipment, measuring equipment, etc.). Their use in any application
requiring radiation hardness assurance (e.g., aerospace equipment) is
not supported.
When considering the use of Sanken products in applications where
higher reliability is required (transportation equipment and its control
systems or equipment, fire- or burglar-alarm systems, various safety
devices, etc.), contact a company sales representative to discuss and
obtain written confirmation of your specifications.
The use of Sanken products without the written consent of Sanken in
applications where extremely high reliability is required (aerospace
equipment, nuclear power-control stations, life-support systems, etc.) is
strictly prohibited.
The information included herein is believed to be accurate and
reliable. Application and operation examples described in this publica-
tion are given for reference only and Sanken and Allegro assume no
responsibility for any infringement of industrial property rights,
intellectual property rights, or any other rights of Sanken or Allegro or
any third party that may result from its use.
115 Northeast Cutoff, Box 15036
6 Worcester, Massachusetts 01615-0036
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