MAX25460
NOT RECOMMENDED FOR NEW DESIGNSAutomotive 1.5A Step-Down Converter with USB Protection/Host Charger Adapter Emulator
- Part Models
- 2
- 1ku List Price
- Starting From $1.07
Overview
- One-Chip Type-A Solution Directly from Car Battery to Portable Device
- 1GHz Bandwidth USB 2.0 Data Switches
- 4.5V to 28V (40V Load Dump) Operating Voltage
- 5V to 6V, 1.5A Output Capability
- Optimal USB Charging and Communication for Portable Devices
- User-Programmable Voltage Gain Adjusts Output for Up to 474mΩ Cable Resistance
- User-Programmable USB Current Limit
- Supports USB BC1.2 CDP and SDP Modes
- Compatible with USB On-the-Go Specification and Apple CarPlay®
- Low-Noise Features Prevent Interference with AM Band and Portable Devices
- Fixed-Frequency 2.2MHz Operation
- Fixed-Pulse-Width Modulation (PWM) Option at No Load
- Spread Spectrum for Electromagnetic Interference (EMI) Reduction
- SYNC Input/Output for Frequency Parking
- Robust Design Keeps Vehicle System and Portable Device Safe in an Automotive Environment
- Short-to-Battery Protection on VBUS, HVD± Pins
- Advanced Diagnostics through I2C Bus
- ±15kV Air/±8kV Contact ISO 10605 (330pF, 2kΩ)*
- ±15kV Air/±8kV Contact IEC
- 61000-4-2 (150pF, 330Ω)*
- Overtemperature Protection and Warning
- -40°C to +125°C Operating Temperature Range
The MAX25460 combines a 1.5A high-efficiency, automotive-grade, step-down converter, a USB BC1.2 host charger emulator, and high-bandwidth USB protection switches for automotive USB 2.0 host applications. The device also includes a USB load current-sense amplifier and a configurable feedback adjustment circuit that provides automatic USB voltage compensation for voltage drops in captive cables often found in automotive applications. The device limits the USB load current using both a fixed internal peak-current threshold and a user-configurable external current-sense USB load threshold.
The MAX25460 is optimized for 2.2MHz operation allowing optimization of efficiency, noise, and board space based on the application requirements. The DC-DC converter integrates a high-side MOSFET and uses a low forward-drop freewheeling Schottky diode for rectification. There is a small low-side n-channel switch to maintain fixed frequency under light loads. The IC includes an external SYNC input/output, and can be configured for spread-spectrum operation. The MAX25460 allows flexible configuration and advanced diagnostic options for both standalone and supervised applications. The device can be programmed using either external programming resistors and/or internal I2C registers through the I2C bus.
The MAX25460 is available in a small 4mm x 5mm 24-pin TQFN package and is designed to minimize required external components and layout area.
APPLICATIONS
- Automotive Radio and Navigation
- USB Port for Host and Hub Applications
- Automotive Connectivity/Telematics
Documentation
Data Sheet 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX25460ATGA/V+ | LFCSP | ||
| MAX25460ATGA/V+T | LFCSP |
This is the most up-to-date revision of the Data Sheet.
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