AP63200Q/AP63201Q/AP63203Q/AP63205Q

Document number: DS43698 Rev. 1 - 2

1 of 30

www.diodes.com

September 2021

© Diodes Incorporated

AP63200Q/AP63201Q/AP63203Q/AP63205Q

AUTOMOTIVE-COMPLIANT, 32V, 2A LOW IQ SYNCHRONOUS BUCK CONVERTER

Description

The AP63200Q/AP63201Q/AP63203Q/AP63205Q is an automotive-

compliant, 2A, synchronous buck converter with a wide input voltage

range of 3.8V to 32V. The device fully integrates a 125

mΩ high-side

power MOSFET and a 68

mΩ low-side power MOSFET to provide

high-efficiency step-down DC-DC conversion.

The AP63200Q/AP63201Q/AP63203Q/AP63205Q 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 AP63200Q/AP63201Q/AP63203Q/AP63205Q 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

AP63200Q/AP63203Q/AP63205Q 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 a TSOT26 package.

Features



AEC-Q100 Qualified for Automotive Applications



Device Temperature Grade 1: -40°C to +125°C TA Range



VIN: 3.8V to 32V



Output Voltage (VOUT)

 0.8V to VIN: AP63200Q and AP63201Q

 Fixed 3.3V: AP63203Q

 Fixed 5V: AP63205Q



2A Continuous Output Current



0.8V ±1% Reference Voltage



22µA Low Quiescent Current (Pulse Frequency Modulation)



Switching Frequency

 500kHz: AP63200Q and AP63201Q

 1100kHz: AP63203Q and AP63205Q



Supports Pulse Frequency Modulation (PFM)



AP63200Q, AP63203Q, and AP63205Q



Up to 88% Efficiency at 5mA Light Load



Pulse Width Modulation (PWM) Regardless of Output Load



AP63201Q



Proprietary Gate Driver Design for Best EMI Reduction



Frequency Spread Spectrum (FSS) to Reduce EMI



AP63200Q, AP63203Q, and AP63205Q



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 (Notes 1 & 2)



Halogen and Antimony Free. “Green” Device (Note 3)



The AP63200Q, AP63201Q, AP63203Q, and AP63205Q are

suitable for automotive applications requiring specific

change control; these parts are AEC-Q100 qualified, PPAP

capable, and manufactured in IATF 16949 certified facilities.

https://www.diodes.com/quality/product-definitions/

Pin Assignments

1

2

3

4

5

6

FB

EN

VIN

GND

SW

BST

TSOT26

(Top View)

Applications



Automotive Power Systems



Automotive Infotainment



Automotive Instrument Clusters



Automotive Body Electronics and Lighting



Automotive Telematics



Advanced Driver Assistance Systems

Notes:

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

Lead-free.

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.