FSEZ1317A is a highly integrated PWM controller with low standby power, high voltage startup, fewest external component counts, CV and CC control.
The FSEZ1317A is a third-generation Primary-Side-Regulation (PSR) PWM controller designed to enhance the performance of low-power flyback converters. It utilizes a proprietary TRUECURRENT topology to enable precise constant-current regulation and simplified circuit design, particularly for battery charger applications. The device minimizes standby power consumption through a proprietary Green Mode that linearly decreases PWM frequency under light-load conditions.
| Low Standby Power | Under 30mW |
|---|---|
| Operating Junction Temperature | -40 to +150 °C |
| Drain-Source Voltage | 700 V |
| Turn-On Threshold Voltage | 15 to 17 V |
| Turn-Off Threshold Voltage | 4.5 to 5.5 V |
| Center Frequency | 47 to 53 kHz |
| Maximum Duty Cycle | 52 to 78 % |
| Package Type | 7-Lead, Small Outline Package (SOP-7) |
It is suitable for battery chargers for cellular phones, cordless phones, PDAs, digital cameras, and power tools.
No, it provides Constant-Voltage and Constant-Current control without secondary-feedback circuitry.
The recommended operating ambient temperature range is -40°C to +105°C.