| Part number | SA33761HHP |
|---|---|
| Description | 55V 4-switches buck-boost controller for automotive front light, VLED 4.5V to 55V, TSSOP24E |
| Channel(#) | 1 |
| Topology | H-bridge |
| Dimming mode | PWM, Analog |
| Fsw(MHz) | |
| Vin (min) (V) | 4.5 |
| Vin (max) (V) | 55 |
| Iout (max) (A) | |
| Package | TSSOP24E |
| Application | Automotive front light |
The SA33761 Buck-Boost controller can automatically operate in Buck, Boost, and Buck-Boost modes based on input and output voltages. It accepts a wide input voltage range from 4.5V to 55V and can accommodate LED voltages from 2.5V to 55V.
The SA33761 operates in constant frequency current mode, with a switching frequency range of 200 kHz to 700 kHz. It provides analog dimming when the voltage on the SET pin is adjusted, and direct pulse-width modulation (PWM) dimming when a dimming signal is applied to the PWM pin.
The SA33761 offers reliable protections against faults including overvoltage, LED open/short, overtemperature, input overcurrent, and additional single faults, and includes cycle-by-cycle current limiting.
| Title | Date |
|---|---|
| DS_SA33761 Datasheet | 2026-03-20 |
| EVB_SA33761HHP EVB User Guide | 2026-03-20 |
| Automotive_Solutions_Q2_2026 | 2026-06-12 |
