AUTOMOTIVE-COMPLIANT, 3.8V-32V INPUT, 3.5A LOW IQ SYNCHRONOUS BUCK CONVERTER that operates in PFM
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The AP63356Q/AP63357Q is an automotive-compliant, 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 stepdown DC-DC conversion. The AP63356Q/AP63357Q 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 AP63356Q/AP63357Q design is optimized for Electromagnetic Interference (EMI) reduction. The device 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. AP63356Q/AP63357Q also 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. The device is available in a 3mm × 2mm, V-DFN3020-13/SWP (Type A1), package with wettable flanks.
| Compliance(Only Automotive supports PPAP) | Automotive |
|---|---|
| Type | Buck |
| Minimum Input Voltage (V) | 3.8 |
| Maximum Input Voltage (V) | 32 |
| Output Current (A) | 3.5 |
| Minimum Output Voltage (V) | 0.8 |
| Maximum Output Voltage (V) | VIN |
| Quiescent Current Typ (µA) | 22 |
| Shutdown Current Typ (µA) | 0.6 |
| Frequency Typ (kHz) | 450 |
| HS RDS(ON) (mΩ) | 74 |
| LS RDS(ON) (mΩ) | 40 |
| 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 |
