AP62300T: 4.2V TO 18V INPUT, 3A LOW IQ SYNCHRONOUS BUCK CONVERTER, PFM/PWM, VREF 0.763V (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.

The AP62300/AP62301 is available in SOT563 (Standard) and TSOT26 (Standard) packages. The AP62300T is available in a TSOT26 (Standard) package.

Feature(s)

VIN: 4.2V to 18V
Output Voltage (VOUT): 0.8V to 7V
3A Continuous Output Current
8V ± 1% Reference Voltage (T_A= +25°C)
- AP62300 and AP62301
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
- Output Undervoltage Protection
- 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-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

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 audios
Network systems
Gaming consoles
Consumer electronics
General purpose point of loads

Specifications & Technical Documents

Product Parameters

Compliance(Only Automotive supports PPAP)	Standard
Type	Buck
Minimum Input Voltage (V)	4.2
Maximum Input Voltage (V)	18
Output Current (A)	3
Minimum Output Voltage (V)	0.763
Maximum Output Voltage (V)	7
Quiescent Current Typ (µA)	155
Shutdown Current Typ (µA)	1.5
Frequency Typ (kHz)	750
HS RDS(ON) (mΩ)	75
LS RDS(ON) (mΩ)	45
Features	Enable,Light Load Efficiency,Soft-start Fixed,UVLO Adjustable,Overcurrent Protection,Thermal Shutdown,Synchronous Rectification

Technical Documents

Calculators

AP62200_AP62300_AP62400_Power-Calculation_Design.xlsx (395 KB)

Recommended Soldering Techniques

TN1.pdf

Purchase & Availablity

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2680	2024-04-16	2024-07-15	Qualified Bill of Material (BOM) - Cu Pillar Bump Optimization.

AP62300T