AP61402Q

Description

The AP61402Q is a selectable up to 4A, synchronous buck converter with an input voltage range of 2.3V to 5.5V and fully integrates a 75mΩ high-side power MOSFET and a 33mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion.

The AP61402Q is easily used by minimizing the external component count due to its adoption of constant on-time (COT) control to achieve fast transient responses, easy loop stabilization, and low output voltage ripple.

The AP61402Q has optimized designs for small form factor. The series offers various fixed output voltage and an adjustable output voltage version. 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 V-DFN1515-6/SWP (Type UX) package.

Feature(s)

• AEC-Q100 Qualified with the Following Results
  • Device Temperature Grade 1: -40°C to +125°C T_A
  • Device HBM ESD Classification Level H1C
  • Device CDM ESD Classification Level C3B
• Functional Safety-Capable – Documentation Available to Aid Functional Safety System Design
• VIN 2.3V to 5.5V
• Wide Output Voltage Range: 0.5V to 5.5V
• 4A Continuous Output Current
• 5V ±2% Reference Voltage
• 20µA Ultra-Low Quiescent Current (Pulse-Frequency Modulation)
• 2MHz Switching Frequency
• Programmable Modulation Mode Through EN
  • Pulse-Frequency Modulation
  • Pulse-Width Modulation Regardless of Output Load
• Proprietary Gate Driver Design for Best EMI Reduction
• ±5% Window Power-Good Indicator and OCP Selector
• Protection Circuitry
  • Undervoltage Lockout (UVLO)
  • VIN Overvoltage Protection (OVP)
  • Peak and Valley Current Limit
  • Thermal Shutdown
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• The AP61402Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities. https://www.diodes.com/quality/product-definitions/

Application(s)

• Automotive power systems
• Automotive infotainment
• Automotive instrument clusters
• Automotive telematics
• Advanced driver assistance systems