High Efficiency, 500kHz, 3A, 30V Input Synchronous Buck Converter
![]()
- Parameters
- Features
- Description
| Part number |
SY82853ADT |
| Channel(#) |
1 |
| Vin (min) (V) |
4.5 |
| Vin (max) (V) |
30 |
| Switching frequency (min)(kHz) |
|
| Switching frequency (max)(kHz) |
500 |
| Vout (min) (V) |
0.6 |
| Vout (max) (V) |
15 |
| Iout (max) (A) |
3 |
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
±1% |
| Vout accuracy(±%) |
|
| Control mode |
COT+Ripple |
| Duty cycle (max)(%) |
|
| Operation mode |
PFM |
| Iq (typ) (uA) |
110 |
| Features |
|
| Package |
TSOT23-6 |
| Operating temperature range(°C) |
-40°C to 125°C |
| Functional safety category |
|
- · Low RDS(ON) for Internal MOSFETs: 90mΩ Top, 45mΩ Bottom
- · Wide Input Voltage Range: 4.5V ~ 30V
- · Adjustable Output Voltage: 0.6V ~ 15V
- · Up to 3A Output Current
- · ±1% 0.6V Reference
- · PFM Light Load Operation for High Efficiency
- · Internal Soft-Start Limits the Inrush Current
- · Support Smooth Startup with Pre-Biased Output
- · 500kHz Switching Frequency Minimizes the External Components
- · Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
- · Output Auto-Discharge Function
- · Cycle-by-Cycle Valley and Peak Current Limit Protection
- · Hic-Cup Mode Output Under Voltage Protection
- · Auto-Recovery Mode Over Temperature Protection
- · Input Under Voltage Lockout (UVLO)
- · RoHS-Compliant and Halogen-Free
- · Compact Package: TSOT23-6
- · Moisture Sensitivity Level (MSL): 1
The SY82853 high efficiency synchronous buck converter operates over a wide input voltage range of 4.5V to 30V, and can deliver an output current up to 3A. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss. The 500kHz pseudo-constant switching frequency enables using small external inductor and capacitor values.
Evaluation Board
-
Photo of evaluation board
-
Photo of evaluation board
-
Photo of evaluation board
EVB_SY82853ADT is intended for evaluating 3A, 30V, 500kHz synchronous buck converter.
