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A6169 Dataheets PDF



Part Number A6169
Manufacturers Allegro
Logo Allegro
Description STR-A6169
Datasheet A6169 DatasheetA6169 Datasheet (PDF)

g n i h tors c t i a Sw egul R 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 .

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g n i h tors c t i a Sw egul R 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 hysteresis, 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 8pin mini-DIP plastic package. FEATURES AND BENEFITS ■ Rugged 800 V Avalanche-Rated MOSFET Simplified Surge Absorption No VDSS Derating Required ■ 19.2 Ω 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 . Data Sheet 28102.24 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 Representative. Sanken Power Devices from Allegro MicroSystems Free Datasheet http://www.0PDF.com STR-A6169 Universal-Input/5 W Flyback Switching Regulator FUNCTIONAL BLOCK DIAGRAM g n i h tors c t i a Sw egul R FEATURES AND BENEFITS (cont’d) ■ Auto-Bias Function Stable Burst Operation Without Generating Interference ■ Internal Off-Timer Circuit ■ Built-In Constant-Voltage Drive ■ Multiple Protections: Pulse-by-Pulse Overcurrent Protection Overload Protection with Auto Recovery Latching Overvoltage Protection Undervoltage Lockout with Hysteresis Latching Thermal Shutdown ■ Molded Small-Size 8-Pin Package For Low-Height SMPS Polarized to Prevent Backwards Assembly 2 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 Copyright © 2005 Allegro MicroSystems, Inc. Free Datasheet http://www.0PDF.com g n i h tors c t i a Sw egul R Pin Characteristic Drain-to-Source Breakdown Volt. Drain Leakage Current On-State Resistance MOSFET Switching Time Operation Start Voltage Operation Stop Voltage Circuit Current in Operation Circuit Current in Non-Operation Auto-Bias Threshold Voltage VCC(bias) – VCC(OFF) Maximum OFF Time OCP Threshold Voltage Leading Edge Blanking Time Burst Threshold Voltage OLP Threshold Voltage Current at OLP Operation Maximum FB Current Start-Up Current Start-Up Circuit Leakage Current OVP Operation Voltage OVP/TSD Latch Sustaining Current OVP/TSD Latch Release Voltage Thermal Shutdown Thermal Resistance No. 8-1 8-1 8 8 2 2 2 2 2 8 1 8 4 4 4 4 5 5 2 2 2 1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 Symbol VDSS I DSS STR-A6169 Universal-Input/5 W Flyback Switching Regulator ELECTRICAL CHARACTERISTICS at TA = 25°C, VCC = 20 V (unless otherwise specified). Ratings Test Conditions ID = 300 µA, V1 – V3 = 0 V (short) VDS = 800 V, V1 – V3 = 0 V (short) ID = 0.4 A VCC = 0 19.2 V VCC = 19.2 9 V VCC = 14 V VCC = 20 9.6 V VCC VCC VCC VCC Min 800 16 9.0 9.6 0.2 7.3 0.69 200 0.70 6.5 -18 227 34.


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