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AP64502

3.8V TO 40V INPUT, 5A LOW IQ SYNCHRONOUS BUCK WITH INTERNAL COMPENSATION

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Description

The AP64502 is a 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 low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP64502 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 AP64502 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 AP64502 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.

Feature(s)

  • VIN: 3.8V to 40V
  • Output Voltage (VOUT): 0.8V to VIN
  • 5A Continuous Output Current
  • 0.8V ± 1% Reference Voltage
  • 25µA Low Quiescent Current (Pulse Frequency Modulation)
  • Adjustable Switching Frequency: 100kHz to 2.2MHz
  • External Clock Synchronization: 100kHz to 2.2MHz
  • Adjustable 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 
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

  • Distributed Power Bus Supplies
  • Power Tools and Laser Printers
  • White Goods and Small Home Appliances
  • Home Audio
  • Network Systems
  • Consumer Electronics
  • General Purpose Point of Load

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
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

Related Content

Packages

Technical Documents

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
Request Samples
Qty. Carrier
AP64502SP-13 Active SO-8EP TPGP 4000 T&R Contact Sales Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free