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AP64502Q

AUTOMOTIVE-COMPLIANT, 40V, 5A SYNCHRONOUS BUCK WITH INTERNAL COMPENSATION

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Description

The AP64502Q is an automotive-compliant, 5A, synchronous buck converter with a wide input voltage range of 3.8V to 40V. The device fully integrates a 45mΩ high-side power MOSFET and a 20mΩ lowside power MOSFET to provide high-efficiency step-down DC-DC conversion.
The AP64502Q 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 AP64502Q 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. The AP64502Q 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 an SO-8EP package.

Application(s)

  • Automotive Power Systems
  • Automotive Infotainment
  • Automotive Instrument Clusters
  • Automotive Telematics
  • Automotive Lighting Control
  • Advanced Driver Assistance Systems

Feature(s)

  • AEC-Q100 Qualified with the Following Results
  • Device Temperature Grade 1: -40°C to +125°C TA Range
  • Device HBM ESD Classification Level H2
  • Device CDM ESD Classification Level C5
  • VIN: 3.8V to 40V
  • 5A Continuous Output Current
  • 0.8V ±1% Reference Voltage
  • 25µA Low Quiescent Current (Pulse Frequency Modulation)
  • Programmable Switching Frequency: 100kHz to 2.2MHz
  • External Clock Synchronization: 100kHz to 2.2MHz
  • Programmable Soft-Start Time
  • Up to 85% Efficiency at 5mA Light Load
  • Proprietary Gate Driver Design for Best EMI Reduction
  • Frequency Spread Spectrum (FSS) to Reduce EMI
  • Low-Dropout (LDO) Mode
  • Precision Enable Threshold to Adjust UVLO
  • Protection Circuitry
  • Undervoltage Lockout (UVLO)
  • Output Overvoltage Protection (OVP)
  • Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen and Antimony Free. “Green” Device 
  • The AP64502Q is suitable for automotive applications
    requiring specific change control; this part is AEC-Q100
    qualified, PPAP capable, and manufactured in IATF 16949
    certified facilities.
    https://www.diodes.com/quality/product-definitions

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Automotive
Type Buck
Minimum Input Voltage (V) 3.8
Maximum Input Voltage (V) 40
Output Current (A) 5
Minimum Output Voltage (V) 0.8
Maximum Output Voltage (V) VIN
Quiescent Current Typ (µA) 25
Shutdown Current Typ (µA) 1
Frequency Typ (kHz) 100 to 2200
HS RDS(ON) (mΩ) 45
LS RDS(ON) (mΩ) 20
Features Enable, Light Load Efficiency, Soft-start Adjustable, Frequency Adjustable, External Clock Synchronization, Internal Loop Compensation, UVLO Adjustable, Frequency Spread Spectrum, OVP, Overcurrent Protection, Thermal Shutdown, Synchronous Rectification

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TN1.pdf