DIODES-AP62301.pdf
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AP62300/AP62301/AP62300T
Document number: DS41958 Rev. 2 - 2
1 of 24
www.diodes.com
May 2020
© Diodes Incorporated
AP62300/AP62301/AP62300T
4.2V TO 18V INPUT, 3A LOW IQ SYNCHRONOUS BUCK CONVERTER
Description
The AP62300/AP62301/AP62300T is a 3A, synchronous buck
converter with a wide input voltage range of 4.2V to 18V. The device
fully integrates a 75mΩ high-side power MOSFET and a 45mΩ low-
side power MOSFET to provide high-efficiency step-down DC-DC
conversion.
The AP62300/AP62301/AP62300T 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 AP62300/AP62301/AP62300T 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.
AP62300/AP62301 is available in SOT563 and TSOT26 packages.
AP62300T is available in a TSOT26 package.
Features
VIN: 4.2V to 18V
Output Voltage (VOUT): 0.8V to 7V
3A Continuous Output Current
0.8V ± 1% Reference Voltage (T
A
= +25°C)
AP62300 and AP62301
0.763V ± 1% Reference Voltage (T
A
= +25°C)
AP62300T
155μA Low Quiescent Current (Pulse Frequency Modulation)
750kHz Switching Frequency (VIN = 12V, VOUT = 5V)
Up to 83% Efficiency at 5mA Light Load
Proprietary Gate Driver Design for Best EMI Reduction
Protection Circuitry
Undervoltage Lockout (UVLO)
Cycle-by-Cycle Valley Current Limit
Thermal Shutdown
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
For automotive applications requiring specific change
control (i.e. parts qualified to AEC-Q100/101/200, PPAP
capable, and manufactured in IATF 16949 certified facilities),
please contact us or your local Diodes representative.
https://www.diodes.com/quality/product-definitions/
Pin Assignments
1
2
3 4
5
6GND
SW
VIN FB
EN
BST
TSOT26
(Top View)
1
2
3 4
5
6 FB
EN
BSTGND
SW
VIN
SOT563
(Top View)
Applications
5V and 12V Distributed Power Bus Supplies
Flat Screen TV Sets and Monitors
White Goods and Small Home Appliances
FPGA, DSP, and ASIC Supplies
Home Audio
Network Systems
Gaming Consoles
Consumer Electronics
General Purpose Point of Load
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.
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