Diodes IncorporatedAP61302Q | Automotive-Compliant Buck ConverterConvertisseur CC en CC et puce de régulateur de commutation

The AP61302Q is an automotive-compliant, 3A, synchronous buck converter with a wide input voltage range of 2.4V to 5.5V.

The AP61300Q and AP61302Q are automotive-compliant, 3A, synchronous buck converters with a wide input voltage range of 2.4V to 5.5V.

The devices integrate a 70mΩ high-side power MOSFET and a 50mΩ low-side power MOSFET to provide highefficiency stepdown DC-DC conversion.

The AP61302Q has a power-good output that can be used in sequencing control applications.

They are easily used by minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple.

The AP61300Q/AP61302Q use their enable (EN) pin to select whether they work in a forced-PWM mode for all loads or switch to PFM at lighter loads.

Both devices are available in the SOT563 package and are pincompatible with their 1A counterparts (AP61100Q/AP61102Q).

The DIODES Advantage

The AP61300Q and AP61302Q provide a highefficiency, small foot-print, DC-DC buck converter solution for automotive applications.

• PFM Mode: Higher Efficiency at Light Loads
  • Provides 0.1μA shutdown current and a low 19μA quiescent current
• High Design Flexibility
  • Wide input range: 2.4V to 5.5V
  • Wide output voltage range: 0.6V to VIN
  • Multifunctional EN pin to control PFM and PWM operation modes
  • Built-in power-good output (AP61302Q)
• Low (43μA) Quiescent Current (I_Q) and 2.2μA Shutdown Current (I_SHDN)
  • Enables systems to meet <100µA standby requirements of many automotive applications
• High-Side and Low-Side Current-Sense Protection
  • Improves design robustness by protecting both highside and low-side switches
• High 2.2MHz Switching Frequency
  • Reduces the size and value of passive components while COT control minimizes external component count

Applications

Automotive PoL conversion in:

• 5V and 3.3V POL applications
• Infotainment
• Telematics
• Advanced driver assistance systems (ADAS)