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The DIODES™ AP61200 / DIODES™ AP61201 / DIODES™ AP61202 / DIODES™ AP61203 is a 2A, synchronous buck converter with a wide input voltage range of 2.3V to 5.5V. The device fully integrates a 110mΩ high-side power MOSFET and an 80mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP61200/AP61201/AP61202/AP61203 device is 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 device is available in a SOT563 package.


  • VIN: 2.3V to 5.5V
  • Output Voltage (VOUT): 0.6V to 3.6V
  • 2A Continuous Output Current
  • 6V ± 2% Reference Voltage
  • 19μA Low Quiescent Current (Pulse Frequency Modulation)
  • 3MHz Switching Frequency (VIN = 5V, VOUT = 1.8V)
  • Up to 89% Efficiency at 5mA Light Load
  • Operation Mode Options
    • Pulse Frequency Modulation: AP61200 and AP61202
    • Force Pulse Width Modulation: AP61201 and AP61203
  • Power-Good Indicator
    • AP61202 and AP61203
  • Protection Circuitry
    • Undervoltage Lockout (UVLO)
    • VIN Overvoltage Protection (OVP)
    • Peak Current Limit
    • Valley Current Limit
    • Thermal Shutdown
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)

For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • 5V distributed power bus supplies
  • White goods and small home appliances
  • FPGA, DSP, and ASIC supplies
  • Network video cameras
  • Wireless routers
  • Consumer electronics
  • General-purpose point of loads

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Type Buck
Minimum Input Voltage (V) 2.3
Maximum Input Voltage (V) 5.5
Output Current (A) 2
Minimum Output Voltage (V) 0.6
Maximum Output Voltage (V) 3.6
Quiescent Current Typ (µA) 19
Shutdown Current Typ (µA) 0.1
Frequency Typ (kHz) 1300
HS RDS(ON) (mΩ) 110
LS RDS(ON) (mΩ) 80
Features Enable,Light Load Efficiency,PFM,Power-Good,Output Discharge,Soft-start Fixed,UVLO Fixed,VIN OVP,Overcurrent Protection,Thermal Shutdown,Synchronous Rectification

Related Content


Technical Documents

Recommended Soldering Techniques


Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
Request Samples
Qty. Carrier
AP61202Z6-7 Active SOT563 TPGP 3000 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 3000 10/3/2022 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 2975 10/3/2022 South America, North America, Asia, Europe, Middle East Buy Now
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