AP63200/AP63201/AP63203/AP63205
3.8V TO 32V INPUT, 2A LOW IQ SYNCHRONOUS BUCK WITH ENHANCED EMI REDUCTION
Description
Pin Assignments
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 lowside power MOSFET to provide high-efficiency step-down DC/DC
conversion.
TOP VIEW
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 highfrequency radiated EMI noise caused by MOSFET switching.
FB
1
6
BST
EN
2
5
SW
VIN
3
4
GND
TSOT26
The device is available in a low-profile, TSOT26 package.
Features
Applications
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VIN 3.8V to 32V
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2A Continuous Output Current
0.8V ± 1% Reference Voltage
22µA Ultralow Quiescent Current
Switching Frequency
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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
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Up to 80% Efficiency at 1mA Light Load
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Up to 88% Efficiency at 5mA Light Load
Fixed Output Voltage
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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
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Overvoltage Protection
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Cycle-by-Cycle Peak Current Limit
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Thermal Shutdown
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
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Notes:
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
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
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