Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

SO-8EP-package-image.png

Back to Buck Converter

AP64500Q

AUTOMOTIVE-COMPLIANT, 40V, 5A SYNCHRONOUS BUCK WITH PROGRAMMABLE FREQUENCY

Evaluation Boards and User Guides

AP64500QSP-EVM-User-Guide.pdf (651 KB)

Contact Sales

Description

The AP64500Q is an automotive-compliant, 5A, synchronous buck converter with a wide input voltage range of 3.8V to 40V. The device fully integrates a 45mΩ high-side power MOSFET and a 20mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP64500Q device is easily used by minimizing the external component count due to its adoption of peak current mode control.

The AP64500Q 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 AP64500Q also 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.

The device is available in an SO-8EP package.

Feature(s)

AEC-Q100 Qualified with the Following Results
- Device Temperature Grade 1: -40°C to +125°C TA Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C5
VIN: 3.8V to 40V
5A Continuous Output Current
8V ±1% Reference Voltage
25µA 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 Circuitry
- 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)
The AP64500Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/

Application(s)

Automotive power systems
Automotive infotainments
Automotive instrument clusters
Automotive telematics
Automotive lighting controls
Advanced driver assistance systems

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP)	Automotive
Type	Buck
Minimum Input Voltage (V)	3.8
Maximum Input Voltage (V)	40
Output Current (A)	5
Minimum Output Voltage (V)	0.8
Maximum Output Voltage (V)	VIN
Quiescent Current Typ (µA)	25
Shutdown Current Typ (µA)	1
Frequency Typ (kHz)	100 to 2200
HS RDS(ON) (mΩ)	45
LS RDS(ON) (mΩ)	20
Features	Enable,Light Load Efficiency,Soft-start Fixed,Frequency Adjustable,External Clock Synchronization,External Loop Compensation,UVLO Adjustable,Frequency Spread Spectrum,OVP,Overcurrent Protection,Thermal Shutdown,Synchronous Rectification