Diodes Incorporated — Analog and discrete power solutions
TSOT26

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AP63203

3.8V-32V INPUT, 2A Low Iq Synchronous Buck with Enhanced EMI Reduction

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Description

The AP63200/AP63201/AP63203/AP63205 is a 2A, synchronous buck converter with a wide input voltage range of 3.8V to 32V and fully integrates a 125mΩ high-side power MOSFET and a 68mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion.

The AP63200/AP63201/AP63203/AP63205 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated compensation network.

The AP63200/AP63201/AP63203/AP63205 has optimized designs for Electromagnetic Interference (EMI) reduction. The converter 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. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further erases high-frequency radiated EMI noise caused by MOSFET switching.

The device is available in a low-profile, TSOT26 package.

Feature(s)

  • VIN8V to 32V
  • 2A Continuous Output Current
  • 8V ±1% Reference Voltage
  • 22µA Ultralow Quiescent Current
  • Switching Frequency
    • 500kHz: AP63200 and AP63201
    • 1MHz: AP63203 and AP63205
  • Pulse Width Modulation (PWM) Regardless of Output Load
    • AP63201
  • Supports Pulse Frequency Modulation (PFM)
    • AP63200, AP63203, and AP63205
    • Up to 80% Efficiency at 1mA Light Load
    • Up to 88% Efficiency at 5mA Light Load
  • Fixed Output Voltage
    • 3V: AP63203
    • 0V: AP63205
  • Proprietary Gate Driver Design for Best EMI Reduction
  • Frequency Spread Spectrum (FSS) to Reduce EMI
  • Precision Enable Threshold to Adjust UVLO
  • Protection Circuitry
    • Overvoltage Protection
    • Cycle-by-Cycle Peak Current Limit
    • Thermal Shutdown
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • An automotive-compliant part is available under separate datasheet (AP63200Q/AP63201Q/AP63203Q/AP63205Q)

Application(s)

  • 12V and 24V distributed power bus supplies
  • Flat screen TV sets and monitors
  • Power tools and laser printers
  • White goods and small home appliances
  • FPGA, DSP, and ASIC supplies
  • Home audios
  • Network systems
  • Set top boxes
  • Gaming consoles
  • Consumer electronics

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Type Buck
Minimum Input Voltage (V) 3.8
Maximum Input Voltage (V) 32
Output Current (A) 2
Minimum Output Voltage (V) 3.3
Maximum Output Voltage (V) 3.3
Quiescent Current Typ (µA) 22
Shutdown Current Typ (µA) 1
Frequency Typ (kHz) 1100
HS RDS(ON) (mΩ) 125
LS RDS(ON) (mΩ) 68
Features Enable,Light Load Efficiency,Soft-start Fixed,Internal Loop Compensation,UVLO Adjustable,Frequency Spread Spectrum,OVP,Overcurrent Protection,Thermal Shutdown,Synchronous Rectification

Related Content

Packages

Technical Documents

Evaluation Boards and User Guides

Calculators

Recommended Soldering Techniques

TN1.pdf

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2605 2023-03-09 2023-06-09 Qualified Additional Cu Pillar Bump Site and Bill of Materials (BOM) Lead Frame Material
PCN-2534 2021-07-29 2021-10-29 Qualified Additional BUMP Site (LBS) and Assembly/Test (A/T) Site (CAT)