AP61300Q/AP61302Q

Document number: DS44605 Rev. 1 - 2

1 of 21

www.diodes.com

January 2022

© Diodes Incorporated

AP61300Q/AP61302Q

AUTOMOTIVE-COMPLIANT, 5.5V INPUT, 3A LOW IQ SYNCHRONOUS BUCK CONVERTER

Description

The

AP61300Q/AP61302Q

is

an

automotive-compliant,

3A,

synchronous buck converter with a wide input voltage range of 2.4V to

5.5V. The device fully integrates a 70

mΩ high-side power MOSFET

and a 50

mΩ low-side power MOSFET to provide high-efficiency step-

down DC-DC conversion.

The AP61300Q/AP61302Q 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.

Features



AEC-Q100 Qualified for Automotive Applications



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



VIN: 2.4V to 5.5V



Output Voltage (VOUT): 0.6V to VIN



3A Continuous Output Current



0.6V ±2% Reference Voltage



19

μA Low Quiescent Current (Pulse Frequency Modulation)



2.2MHz Switching Frequency (VIN = 5V, VOUT = 1.8V)



Up to 84% Efficiency at 5mA Light Load



Programmable Operation Mode Through EN



Pulse Frequency Modulation



Pulse Width Modulation Regardless of Output Load



Low-Dropout (LDO) Mode



Power-Good Indicator



AP61302Q



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)



Haloge

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



The AP61300Q and AP61302Q 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 OUT

EN

SW

VIN

GND

FB

(Top View)

AP61300Q

1

2

3

4

5

6 PG

EN

SW

VIN

GND

FB

SOT563

AP61302Q

Applications



Automotive power systems



Automotive infotainment



Automotive instrument clusters



Automotive telematics



Advanced driver assistance systems (ADAS)

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 info

rmation 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.