| Part number | SY8728ABT |
|---|---|
| Description | Sync. Buck, Int. 36V/220m Ω&36 V/210m Ω MOS,PWM dimming, Small dimming scale accuracy |
| Channel(#) | 1 |
| Topology | Buck |
| Dimming mode | PWM |
| Fsw(kHz) | 1000 |
| Vin (min) (V) | 4.5 |
| Vin (max) (V) | 34 |
| Iout (max) (A) | 1 |
| Package | SOT23-6 |
| Application | IR LED |
● 4.5V to 34V Input Voltage Range
● Up to 1A Output Current Capability
● RDSON for Internal Switches:
High/Low Side: 220mΩ/210mΩ
● 1.0MHz Switching Frequency
● Auto Frequency Reduction to Apply Small or Large Conversion Ratio Application
● Cycle by Cycle Peak Current Limit for High Side Switch and Valley Current Limit for Low Side Switch
● PWM signal on the DIM Pin to achieve DC dimming
● Down to 1% Dimming Scale
● Output Voltage Discharging
● Open/Short LED Protection
● Over Temperature Protection
● Compact Package: SOT23-6
SY8728, a high efficiency synchronous step-down LED regulator that achieves up to 1A output current. It operates at 1.0MHz (maximum) switching frequency and integrates two power MOSFETs to minimize and reduce the external components.
The SY8728 provides the PWM dimming on the DIM pin, which dimming duty from 1%-100% to achieve dimmable LED lighting application.
The SY8728 also provides open/short LED, and over temperature protection.
| Title | Date |
|---|---|
| Silergy_Catalog_Q3_2026 | 2026-11-04 |
