AP64350 Series

3.8V TO 40V INPUT, 3.5A LOW IQ SYNCHRONOUS BUCK

Catalog

3.8V TO 40V INPUT, 3.5A LOW IQ SYNCHRONOUS BUCK

Part	Main Purpose	Voltage - Output [Min]	Voltage - Output [Max]	Supplied Contents	Board Type	Utilized IC / Part	Outputs and Type	Outputs and Type	Current - Output	Regulator Topology	Voltage - Input [Min]	Voltage - Input [Max]	Package / Case	Package / Case	Package / Case	Output Type	Output Configuration	Mounting Type	Supplier Device Package	Qualification	Voltage - Output (Min/Fixed)	Frequency - Switching [Min]	Frequency - Switching [Max]	Synchronous Rectifier	Voltage - Output (Max) [Max]	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Min) [Min]	Grade	Function	Topology
Diodes Inc AP64350QSP-EVM	DC/DC Step Down	0.8 V	40 V	Board(s)	Fully Populated	AP64350Q	Non-Isolated	1	3.5 A	Buck	3.8 V	40 V
Diodes Inc AP64350QSP-13									3.5 A				0.154 in	8-SOIC	3.9 mm	Adjustable	Positive	Surface Mount	8-SO-EP	AEC-Q100	0.8 V	100 kHz	2.2 MHz		40 V	1	-40 °C	125 °C	3.8 V	Automotive	Step-Down	Buck

Catalog

3.8V TO 40V INPUT, 3.5A LOW IQ SYNCHRONOUS BUCK

Key Features

• VIN 3.8V to 40V

• 5A Continuous Output Current

• 8V ± 1% Reference Voltage

• 22µA Low Quiescent Current (Pulse-Frequency Modulation)

• Programmable Switching Frequency: 100kHz to 2.2MHz

• External Clock Synchronization: 100kHz to 2.2MHz

• Up to 85% Efficiency at 5mA Light Load

• Proprietary Gate Driver Design for Best EMI Reduction

• Frequency Spread Spectrum (FSS) to Reduce EMI

• Low-Dropout (LDO) Mode

• Precision Enable Threshold to Adjust UVLO

• Protection CircuitryUndervoltage Lockout (UVLO)Output Overvoltage Protection (OVP)Cycle-by-Cycle Peak Current LimitThermal Shutdown

• Undervoltage Lockout (UVLO)

• Output Overvoltage Protection (OVP)

• Cycle-by-Cycle Peak Current Limit

• Thermal Shutdown

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

• Halogen and Antimony Free. "Green" Device (Note 3)

• An automotive-compliant part is available under separate datasheet (AP64350Q)

Description

The AP64350 is a 3.5A, synchronous buck converter with a wide input voltage range of 3.8V to 40V. 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.