| Part number | SQ33604AFBP |
|---|---|
| Channel(#) | 1 |
| Vin (min) (V) | 8.5 |
| Vin (max) (V) | 75 |
| Topology | PSR/SSR flyback |
| Switching frequency (min)(kHz) | 100 |
| Switching frequency (max)(kHz) | 500 |
| Vout (min) (V) | Programmable |
| Vout2 (min)(V) | |
| Vout (max) (V) | Programmable |
| Vout2 (max )(V) | |
| Vref accuracy (±%) | 1.5 |
| Vout accuracy(±%) | |
| Control mode | Peak current mode |
| Duty cycle (max)(%) | 83 |
| Operation mode | PWM/PFM |
| Iq (typ) (uA) | 1250 |
| Features | HV startup,PSR/SSR,Auto-recovery input UVP,Auto-recovery OCP,Auto-recovery SCP,Auto-recovery OVP,Auto-recovery OTP |
| Package | MSOP10 |
| Operating temperature range(°C) | -40 to 125 |
| Functional safety category |
The SQ33604A is a fully-featured PWM controller integrated high voltage start-up circuit that operates over a wide input range up to 100V.
The SQ33604A adopts current mode, quasi constantfrequency control to avoid sub-harmonic oscillation with no need of slope compensation. The SQ33604A is specifically designed for both low cost, small size, high efficiency isolated solution with primary-side regulates (PSR) Flyback and Secondary-side regulates (SSR) Flyback application. Additional features include precision reference, output diode Compensation compensation (in PSR), over-voltage protection (in PSR) , line undervoltage lockout, cycle by cycle current limit, frequency modulation, soft-start, external programmable thermal shutdown and internal OTP.
The SQ33604A is available in a MSOP10 package.
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
The EVB_SQ33604AFBP is intended for evaluating 100V Current Mode PWM Controller
| Title | Date |
|---|---|
| Automotive_Solutions_Q1_2026 | 2026-03-06 |
| Silergy_Catalog_Q1_2026 | 2026-02-09 |
