| Part number | SY26151DFD |
|---|---|
| Channel(#) | 1 |
| Vin (min) (V) | 4.5 |
| Vin (max) (V) | 18 |
| Switching frequency (min)(kHz) | 750 |
| Switching frequency (max)(kHz) | 750 |
| Vout (min) (V) | 0.8 |
| Vout (max) (V) | ? |
| Iout (max) (A) | 1.5 |
| Vout2 (min)(V) | |
| Vout2 (max )(V) | |
| Iout2 (max)(A) | |
| Vref accuracy (±%) | 1.5 |
| Vout accuracy(±%) | |
| Control mode | COT+Ivalley |
| Duty cycle (max)(%) | 75 |
| Operation mode | Auto PFM |
| Iq (typ) (uA) | 140 |
| Features | Power good |
| Package | DFN2×2-8 |
| Operating temperature range(°C) | -40 to 125 |
| Functional safety category |
l Low RDS(ON) for Internal MOSFETs: 80mΩ Top, 40mΩ Bottom
l Wide Input Voltage Range: 4.5V ~ 18V
l Up to 1.5A Output Current
l ±1.5% Reference Accuracy
l Internal Soft-Start Limits the Inrush Current
l 750kHz Switching Frequency
l Constant On-Time and Valley Current Control to Achieve Fast Transient Response.
l Cycle-by-Cycle Peak and Valley Current Limit Protection
l Hic-Cup Mode Output Under Voltage Protection
l Auto-Recovery Mode Over Temperature Protection
l Input Under Voltage Lockout (UVLO)
l Startup from Pre-Biased Output
l Power Good Indicator
l RoHS Compliant and Halogen Free
l MSL Rating: MSL1 (DFN2x2-8)
The SQ29051 high efficiency 750kHz synchronous Buck converter operates over a wide input voltage range from 4.5V to 18V, and can deliver up to 1.5A output current. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss.
The SQ29051 adopts constant on-time and valley current control to achieve fast transient response for applications with high step-down ratios and high efficiency at light loads. It also provides cycle-by-cycle current limit and over temperature protection.
The SQ29051 is highly integrated, so only the input and output capacitors, the inductor, and the feedback resistors need to be selected for the targeted application specifications.
The SQ29051 is available in a compact DFN2x2-8 package.
| Title | Date |
|---|---|
| Automotive Solutions Q4 2025 | 2025-12-02 |
| Consumer Selection Guide Q4 2025 | 2025-12-02 |
| Industrial Designs Q4 2025 | 2025-12-02 |
| DFN2x2-8 | 2022-05-20 |
