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PDF STR-A6151 Data sheet ( Hoja de datos )
| Número de pieza | STR-A6151 | |
| Descripción | (STR-A6151 / STR-A6159) Universal Input / 13 or 16W Flyback Switching Regulator | |
| Fabricantes | Allegro Microsystems | |
| Logotipo |  |
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SwRitecghuinlagtors
STR-A6151 AND
STR-A6159
Universal-Input/13 or 16 W
Flyback Switching Regulators
The STR-A6151 and STR-A6159 are PRC topology (fixed off-time)
regulators specifically designed to satisfy the requirements for increased
U.comABSOLUTE MAXIMUM RATINGS
at TA = +25°C
t4Control Supply Voltage, VCC . . . . 35 V
Drain-Source Voltage, VDSS . . . . . . 650 V
eDrain Switching Current, ID
STR-A6151 . . . . . . . . . . . . . . 2.5 A*
eSTR-A6159 . . . . . . . . . . . . . . 1.8 A*
Peak Drain Switching Current, IDM
hSTR-A6151 . . . . . . . . . . . . . . . 2.5 A
STR-A6159 . . . . . . . . . . . . . . . 1.8 A
SSingle-Pulse Avalanche Energy, EAS
STR-A6151 . . . . . . . . . . . . . . 72 mJ
taSTR-A6159 . . . . . . . . . . . . . . 24 mJ
Start-Up-Pin Voltage Range,
aVstartup . . . . . . . . . –0.3 V to +600 V
OCP Voltage Range,
.DVOCP . . . . . . . . . . . . –0.5 V to +6 V
FB/OLP Voltage Range,
VFB/OLP . . . . . . . . . . –0.5 V to +10 V
wPackage Power Dissipation, PD
control (VCC × ICC(ON)) . . . . . 0.15 W
MOSFET (VDSS × ID) . . . . . . 1.35 W
wtotal . . . . . . . . . . . . . . . . . . . . 1.5 W
mMOSFET Channel Temp., TJ . +150°C
w oInternal Frame Temp., TF . . . . +125°C
.cOperating Temperature Range,
TA . . . . . . . . . . . -20°C to +125°C†
UStorage Temperature Range,
t4TS . . . . . . . . . . . . -40°C to +125°C
ee* Drain switching current is limited by tem-
hperature (page 2) and safe operating area
S(page 4).
ta†For the availability of parts meeting -40°C
requirements, contact Allegro’s Sales Represen-
.Datative.
integration and reliability in flyback converters. They incorporate a
primary control and drive circuit with avalanche-rated power
MOSFETs. The STR-A6151 features higher switching current and
avalanche-energy ratings and lower on-resistance.
Covering the power range from below 13 watts to 16 watts for a 230
VAC input, or 10 to 12 watts for a universal (85 to 264 VAC) input,
these devices 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.
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. Both devices are provided in an 8-pin
mini-DIP plastic package.
FEATURES AND BENEFITS
■ Rugged 650 V Avalanche-Rated MOSFET
Simplified Surge Absorption
No VDSS Derating Required
■ Choice of rDS(on) (3.95 Ω or 6 Ω maximum)
■ 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-A6151 .
wwwSanken Power Devices
from Allegro MicroSystems
1 page  
SwRitecghuinlagtors
STR-A6151 and STR-A6159
Universal-Input/13 or 16 W
Flyback Switching Regulators
MOSFET TYPICAL CHARACTERISTICS (cont’d)
STR-A6151
STR-A6159
www.allegromicro.com
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet STR-A6151.PDF ] | |
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