L6565D Integrated Circuit Chip QUASI - RESONANT SMPS CONTROLLER
electronics ic chip
,integrated circuit components
L6565
QUASI-RESONANT SMPS CONTROLLER
■ QUASI-RESONANT (QR) ZERO-VOLTAGESWITCHING (ZVS) TOPOLOGY
■ LINE FEED FORWARD TO DELIVER CONSTANT POWER vs. MAINS CHANGE
■ FREQUENCY FOLDBACK FOR OPTIMUM STANDBY EFFICIENCY
■ PULSE-BY-PULSE & HICCUP-MODE OCP
■ ULTRA-LOW START-UP (< 70µA) AND QUIESCENT CURRENT (< 3.5mA)
■ DISABLE FUNCTION (ON/OFF CONTROL)
■ 1% PRECISION (@ Tj = 25°C) INTERNAL REFERENCE VOLTAGE
■ ±400mA TOTEM POLE GATE DRIVER WITH UVLO PULL-DOWN
■ BLUE ANGEL, ENERGY STAR, ENERGY 2000 COMPLIANT
APPLICATIONS
■ TV/MONITOR SMPS
■ AC-DC ADAPTERS/CHARGERS
■ DIGITAL CONSUMER
■ PRINTERS, FAX MACHINES, PHOTOCOPIERS AND SCANNERS
DESCRIPTION
The L6565 is a current-mode primary controller IC, specifically designed to build offline Quasi-resonant ZVS (Zero Voltage Switching at switch turn-on) flyback converters.
Quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers MOSFET's turn-on.
Converter's power capability variations with the mains voltage are compensated by line voltage feedforward. At light load the device features a special function that automatically lowers the operating frequency still maintaining the operation as close to ZVS as possible. In addition to very low start-up and quiescent currents, this feature helps keep low the consumption from the mains at light load and be Blue Angel and Energy Star compliant.
The IC includes also a disable function, an on-chip filter on current sense, an error amplifier with a precise reference voltage for primary regulation and an effective two-level overcurrent protection.
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
| Symbol | Pin | Parameter | Value | Unit |
|---|---|---|---|---|
| IVcc | 8 | ICC + IZ | 30 | mA |
| IGD | 7 | Output Totem Pole Peak Current (2 µs) | ±700 | mA |
| INV, COMP, VFF, CS | 1, 2, 3 4 | Analog Inputs & Outputs | -0.3 to 7 | V |
| IZCD | 5 | Zero Current Detector | 50 (source) -10 (sink) | mA |
| Ptot |
Power Dissipation @Tamb = 50°C (Minidip) (SO8) |
1 0.65 |
W | |
| TJ | Junction Temperature Operating range | -40 to 150 | °C | |
| TSTG | Storage Temperature | -55 to 150 | °C |
Stock Offer (Hot Sell)
| Part no. | Quantity | Brand | D/C | Package |
| MC14504BCP | 3200 | MOT | 16+ | DIP |
| PIC18F8680-I/PT | 3200 | MICROCHIP | 14+ | QFP |
| SG3525 | 3200 | ST | 14+ | DIP |
| SN74AHCT594PWR | 3200 | TI | 14+ | TSSOP |
| SN74HC138N | 3200 | TI | 16+ | DIP |
| SN74LV138AD | 3200 | TI | 16+ | SOP16 |
| W25Q32BVSSIG | 3200 | WINBOND | 13+ | SOP-8 |
| AD9246 | 3210 | AD | 15+ | QFP |
| UA78L05ACDR | 3210 | TI | 16+ | SOP8 |
| AT45DB642D-CNU | 3215 | ATMEL | 16+ | QFN |
| SUM65N20 | 3220 | VISHAY | 14+ | TO-263 |
| TPS61220DCKR | 3220 | TI | 14+ | SC70-6 |
| HCPL-V601 | 3224 | AVAGO | 14+ | SOP8 |
| MM74HC126MX | 3250 | FAIRCHILD | 16+ | SOP-14 |
| TDA4863-2G | 3250 | 16+ | SOP-8 | |
| PIC12C508A-04I/SN | 3300 | MICROCHI | 13+ | SOP8 |
| TPS3825-50DBVR | 3322 | TI | 15+ | SOT23-5 |
| PC844 | 3330 | SHARP | 16+ | DIP16 |
| FDS9435 | 3333 | FSC | 16+ | SOP8 |
| MAX491CSD | 3333 | MAXIM | 14+ | SOP-14 |
| MIC29150-12BT | 3333 | MICREL | 14+ | TO-220 |
| MT8816 | 3344 | ZARLINK | 14+ | PLCC |
| SMCJ54CA | 3344 | VISHAY | 16+ | DO-214AA |
| HEF4094BT | 3368 | 16+ | SO16 | |
| ACPL-P480-500E | 3400 | AVAGO | 13+ | SOP |
| ATXMEGA128A1-AU | 3400 | ATMEL | 15+ | QFP |
| IRFR4105TR | 3400 | IR | 16+ | TO-252 |
| PC922 | 3400 | SHARP | 16+ | DIP-8 |
| SN7407N | 3400 | TI | 14+ | DIP14 |
| 74HC240D | 3410 | PHI | 14+ | SOP |
AOZ1021AI Electronic IC Chip NEW AND ORIGINAL STOCK
AOZ1210AI Electronic IC Chip NEW AND ORIGINAL STOCK
TNY274GN NEW AND ORIGINAL STOCK
| Image | Part # | Description | |
|---|---|---|---|
|
|
AOZ1021AI Electronic IC Chip NEW AND ORIGINAL STOCK |
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3A 8-SOIC (0.154", 3.90mm Width)
|
|
|
|
AOZ1210AI Electronic IC Chip NEW AND ORIGINAL STOCK |
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 2A 8-SOIC (0.154", 3.90mm Width)
|
|
|
|
TNY274GN NEW AND ORIGINAL STOCK |
Converter Offline Flyback Topology 132kHz SMD-8C
|