3.8V-32V INPUT, 3.5A Low Iq Synchronous Buck with Enhanced EMI Reduction PFM/PWM
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The AP63356/AP63357 is a 3.5A, synchronous buck converter with a wide input voltage range of 3.8V to 32V. The device fully integrates a 74mΩ high-side power MOSFET and a 40mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.
The AP63356/AP63357 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated loop compensation network.
The AP63356/AP63357 design is optimized for Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching.
The device is available in a 3mm × 2mm V-DFN3020-13 package.
| Compliance (Only Automotive Supports PPAP) | Standard |
|---|---|
| Type | Buck |
| HS RDS(ON) (mΩ) | 74 |
| LS RDS(ON) (mΩ) | 40 |
| MaximumInput Voltage (V) | 32 |
| MinimumInput Voltage (V) | 3.8 |
| Quiescent Current Typ (μA) | 22 |
| Shutdown Current Typ (µA) | 1 |
| Output Current (A) | 3.5 A |
| Minimum Output Voltage (V) | 0.8 |
| Maximum Output Voltage (V) | VIN |
| Frequency Typ (kHz) | 450 |
| Features | Enable,Light Load Efficiency,Power-Good,Soft-start Fixed,Internal Loop Compensation,External Loop Compensation,UVLO Adjustable,Frequency Spread Spectrum,UVP,Overcurrent Protection,Thermal Shutdown,Synchronous Rectification |
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2605 | 2023-03-09 | 2023-06-09 | Qualified Additional Cu Pillar Bump Site and Bill of Materials (BOM) Lead Frame Material |
