MAX20037ATIB/V+

      MAX20037 Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emulation Industry's first Synchronous USB Buck Converter with I2C and Protection/Host Charge Emulator NDA Required. Request Full Data Sheet and Software   Description The MAX20037/MAX20038 ICs combine a 3.5A automotive- grade step-down converter, USB host charger adapter emulator, and USB protection switches for automotive USB host applications. The device family also includes a USB load currentsense amplifier and configurable feedback-adjustment circuit, designed to provide automatic USB voltage compensation for voltage drops in captive cables often found in automotive applications. The ICs limit the USB load current using both a fixed internal peak-current threshold of the DC-DC converter and a user-configurable external USB load current-sense amplifier threshold. The ICs allow flexible configuration options for both stand-alone and supervised applications, and can be programmed for desired operation using both external programming resistors and/or internal I2C registers through the I2C bus. The ICs are optimized for high-frequency operation and include programmable frequency selection from 310kHz to 2.2MHz, allowing optimization of efficiency, noise, and board space based on application requirements. The fully synchronous DC-DC converters feature integrated high-side and low-side MOSFETs, an external SYNC input/output, and can be configured for spread-spectrum operation. The MAX20037/MAX20038 are are available in a small (5mm x 5mm) 28-pin TQFN package designed to minimize required components and layout area. Key Features     One-Chip Solution Directly from Car Battery to Portable Device o 4.5V to 28V (40V Load Dump) Input Voltage o 5V, 3.5A Output Current Capability o Device-Attach Detection Output o Low-Q Current Skip and Shutdown Modes Low-Noise Features Prevent Interference with AM Band and Portable Devices o Fixed-Frequency 275kHz to 2.2MHz Operation o Fixed-PWM Option at No Load o Spread Spectrum for EMI Reduction o SYNC Input/Output for Frequency Parking Optimal USB Power and Communication for Portable Devices o User-Programmable Voltage Gain Adjusts Output for Up to 600mΩ Cable Resistance o User-Programmable USB Current Limit o USB 480Mbps/12Mbps/1.5Mbps Data Switches o Integrated iPod®/iPhone®/iPad® and Samsung® Charge-Detection Termination Resistors o Supports USB BC1.2 CDP and DCP Modes o Supports China YD/T 1591-2009 o Compatible with USB On-the-Go Specification Robust Design Keeps Vehicle System and Portable Devices Safe in Automotive Environment o Short-to-Battery Protection on DC-DC Converter Pins o Short-to-VBUS Protection on USB Pins (MAX20037) o Short-to-Battery Protection on USB Pins (MAX20038) o ± 15kV Air/±8kV Contact ISO 10605* o ± 15kV Air/±8kV Contact IEC 61000-4-2* o Reduced Inrush Current with Soft-Start o Overtemperature Protection o -40°C to +125°C Operating Temperature Range Design Resources  MAX20037EVKIT: Evaluation Kit for the MAX20037  Quality and Environmental Data  Request Reliability Report for: MAX20037 Lead-Free Package Tin (Sn) Whisker Reports Key Specs  Part Number Supported Charging Configurations Supported USB Battery Charging Specification Charging Modes Current Limit Switch Control CDP Emulation Remote Wake-Up Support VBUSReset Time (sec) Package/Pins typ MAX20037 NEW! Apple 1.0A 1.2 Auto  Detection Apple 2.1A  China YD/T  1591‐2009  Samsung  Galaxy  Tablet 2A  Auto  Detection  with Apple  1A  Auto  Detection  with Apple  2A  USB CDP  USB  Dedicated  Charger  USB SDP  CDP  Emulation  Pass‐ Through  Forced  Dedicated  Charger  Pass‐ Through  Samsung  Galaxy  Tablet 2A  See All USB Host Adapter Emulator (22) CEN Yes No 0.016 Budgetary Price See Notes TQFN‐CU/28 Quality and Environmental  Device Fab Process Technology Sample size Rejects FIT at 25°C MAX20037ATIC/V+T* Contact reliability engineer for information MAX20037ATID/V+T* Contact reliability engineer for information MAX20037ATIE/V+* Contact reliability engineer for information MAX20037ATIA/V+* Contact reliability engineer for information MAX20037ATIA/V+T* Contact reliability engineer for information MAX20037ATIB/V+W* Contact reliability engineer for information MAX20037ATIC/V+* Contact reliability engineer for information MAX20037ATIB/V+* Contact reliability engineer for information MAX20037ATID/V+* Contact reliability engineer for information MAX20037ATIE/V+T* Contact reliability engineer for information MAX20037ATIB/V+T* Contact reliability engineer for information MAX20037ATIB/V+TW* Contact reliability engineer for information FIT at 55°C Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested. Quality Management System > Environmental Management System >             https://www.maximintegrated.com/en/products/interface/universal‐serial‐bus/MAX20037.html/tb_tab0 4‐19‐18