4.2V TO 18V INPUT, 2A LOW IQ SYNCHRONOUS BUCK CONVERTER
The AP62200 is a 2A, synchronous buck converter with a wide input
voltage range of 4.2V to 18V. The device fully integrates a 90mΩ
high-side power MOSFET and a 65mΩ low-side power MOSFET to
provide high-efficiency step-down DC/DC conversion.
The AP62200 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 AP62200 design is optimized for Electromagnetic Interference
(EMI) reduction. It 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 SOT563 or TSOT26 package.
5 EN SW 2
VIN: 4.2V to 18V
Output Voltage (VOUT): 0.8V to 7V
2A Continuous Output Current
0.8V ± 1% Reference Voltage (TA = +25°C)
135μA Low Quiescent Current
740kHz Switching Frequency (VIN = 12V, VOUT = 5V)
Up to 84% Efficiency at 5mA Light Load
Proprietary Gate Driver Design for Best EMI Reduction
o Undervoltage Lockout (UVLO)
o Cycle-by-Cycle Valley Current Limit
o Thermal Shutdown
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Flat Screen TV Sets and Monitors
Set Top Boxes
General Purpose Point of Load
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Document number: DS41957 Rev. 2 - 2
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