| Part number | SY22124BDUC |
|---|---|
| Description | 2ch x 1A flash LED driver, Sync. boost + current source, PWM dimming |
| Channel(#) | 2 |
| Topology | Boost+ current source |
| Dimming mode | PWM |
| Fsw(kHz) | 2000 |
| Vin (min) (V) | 2.7 |
| Vin (max) (V) | 5.5 |
| Iout (max) (A) | 1A/ch |
| Package | DFN3×2-14 |
| Application | Flash LED driver |
· Input voltage range: 2.7V to 5.5V.
· 2MHz switching frequency to achieve small total solution size.
· Drive up to total 2A or 1A per channel in flash mode
· Timeout function in flash mode
· Independent flash-mode enable and movie/torch-mode enable pins
· Movie/torch-mode dimming via PWM control
· One resistor sets flash-mode LED current
· One resistor sets movie/torch-mode LED current
· Low Rdson of internal FET: 100m ohm for PFET and 200m ohm for NFET.
· LED open/short protection
· Over-voltage protection
· 0.1 μA shutdown current
· Thermal shut down.
· -40 to +85 C° Temperature Range
· Pb-free Package: DFN3x2-14
The SY22124B is a high efficiency, 2 MHz frequency synchronous Boost converter with two 1A constant current drivers for high current white LEDs. SY22124B could operate in Movie/Torch mode or Flash mode. There is timeout function in flash mode. It’s convenient to program two mode’s LED current by external resistors respectively. It is an ideal power solution for WLED photo flash applications within small PCB layout dimension and used in Lithium-ion/polymer battery operated products.
The SY22124B is available in a RoHS compliant 14-lead 3x2x0.75mm DFN.
| Title | Date |
|---|---|
| Silergy_Catalog_Q3_2026 | 2026-11-04 |
