AP63200/AP63201/AP63203/AP63205

3.8V TO 32V INPUT, 2A LOW IQ SYNCHRONOUS BUCK WITH ENHANCED EMI REDUCTION

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.

Features

•

•

2A Continuous Output Current

•

0.8V ± 1% Reference Voltage

•

22µA Ultralow Quiescent Current

•

Switching Frequency

o

500kHz: AP63200 and AP63201

o

1.1MHz: AP63203 and AP63205

•

Pulse Width Modulation (PWM) Regardless of Output Load

o

AP63201

•

Supports Pulse Frequency Modulation (PFM)

o

AP63200, AP63203, and AP63205

o

Up to 80% Efficiency at 1mA Light Load

o

Up to 88% Efficiency at 5mA Light Load

•

Fixed Output Voltage

o

3.3V: AP63203

o

5.0V: AP63205

•

Proprietary Gate Driver Design for Best EMI Reduction

•

Frequency Spread Spectrum (FSS) to Reduce EMI

•

Precision Enable Threshold to Adjust UVLO

•

Protection Circuitry

o

Overvoltage Protection

o

Cycle-by-Cycle Peak Current Limit

o

Thermal Shutdown

•

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

•

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

Pin Assignments

1

2

3

4

5

6

FB

EN

VIN

GND

SW

BST

TSOT26

TOP VIEW

Applications

•

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 Audio

•

Network Systems

•

Set Top Boxes

•

Gaming Consoles

•

Consumer Electronics

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.

AP63200/AP63201/AP63203/AP63205

Document number: DS41326 Rev. 2 - 2

1 of 18

www.diodes.com

January 2019

© Diodes Incorporated