High Efficiency, Fast Response, 6A Continuous, 12A Peak, 28V Input Synchronous Step Down Regulator
![]()
- Parameters
- Features
- Description
| Part number |
SY21215AQQC |
| Channel(#) |
1 |
| Vin (min) (V) |
4 |
| Vin (max) (V) |
28 |
| Switching frequency (min)(kHz) |
|
| Switching frequency (max)(kHz) |
800 |
| Vout (min) (V) |
0.591 |
| Vout (max) (V) |
0.609 |
| Iout (max) (A) |
6 |
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
±1.5% |
| Vout accuracy(±%) |
|
| Control mode |
|
| Duty cycle (max)(%) |
|
| Operation mode |
|
| Iq (typ) (uA) |
100 |
| Features |
Power Good Indicator, Programmable peak current limit |
| Package |
QFN3x3-12 |
| Operating temperature range(°C) |
-40°C to 125°C |
| Functional safety category |
|
- Low RDS(ON) for internal switches (top/bottom): 40/20 mΩ
- Wide input voltage range: 4-28V
- Instant PWM architecture to achieve fast transient responses
- Internal 600us softstart limits the inrush current
- Pseudo-constant frequency: 800kHz.
- 6A continuous/12A peak output current capability
- ±1.5% 0.6V reference
- Programmable peak current limit
- Power good indicator
- Output discharge function
- Hic-cup mode output short circuit protection
- Hic-cup mode output over voltage protection
- Input UVLO
- Over temperature protection
- RoHS Compliant and Halogen Free
- Compact package: QFN3x3-12
The SY21215A develops a high efficiency synchronous step-down DC-DC regulator capable of delivering 6A continuous, 12A peak current. The SY21215A operates over a wide input voltage range from 4V to 28V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.
The SY21215A adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at pseudo-constant frequency of 800kHz under continuous conduction mode to minimize the size of inductor and capacitor.
Evaluation Board
-
Photo of evaluation board
-
Photo of evaluation board
-
Photo of evaluation board
The EVB_SY21215AQQC is intended for evaluating fast response, 6A continuous, 12A peak current, 28V Input synchronous buck regulator. It features Enable control, output voltage selection inputs.
