My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20037ATIA/V+T
- Part No.:
- MAX20037ATIA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20037ATIA/V+T.pdf
- Description:
- IC REG BUCK 5V 3.5A 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,900
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20037ATIA/V+T from Maxim Integrated is an automotive-grade synchronous step-down converter with integrated USB host charger emulator, USB protection switches, and current-sense amplifier - delivering 5V/3.5A output from 4.5V–28V input, supporting USB BC1.2 CDP/DCP, Apple 1A/2.1A, Samsung Galaxy Tablet 2A, and China YD/T 1591-2009 charging protocols for in-vehicle USB ports.
For engineers reviewing the MAX20037ATIA/V+T datasheet, MAX20037ATIA/V+T pinout, MAX20037ATIA/V+T application, or MAX20037ATIA/V+T equivalent, key selection considerations include I²C-programmable USB voltage compensation (up to 600 mΩ cable drop), spread-spectrum EMI reduction, short-to-battery protection on USB pins, -40°C to +125°C operation, and TQFN-28 (5mm × 5mm) packaging optimized for automotive space constraints.
Technical Context
The MAX20037ATIA/V+T integrates a fully synchronous buck controller with internal high-side and low-side MOSFETs, programmable switching frequency (310 kHz–2.2 MHz), and SYNC I/O for frequency parking. It implements dual-stage USB current limiting: fixed internal peak-current threshold in the DC-DC stage plus user-configurable external sense-amplifier threshold.
Its USB emulation logic supports automatic detection and termination for Apple, Samsung, BC1.2 CDP, DCP, and SDP modes, while the feedback-adjustment circuit dynamically compensates VBUS for voltage drop across captive cables - a critical feature for automotive infotainment and center-console USB ports where cable resistance exceeds 300 mΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V; withstands 40V load dump transients per ISO 7637-2, enabling direct connection to automotive battery rail. |
| Output Voltage & Current | 5V ±1%, 3.5A continuous; regulated output meets USB power delivery requirements for smartphones and tablets in vehicle environments. |
| Switching Frequency | 310kHz to 2.2MHz; programmable via I²C or external resistor to balance efficiency, EMI, and component size. |
| USB Charging Protocols | BC1.2 CDP/DCP, Apple 1A/2.1A, Samsung Galaxy Tablet 2A, YD/T 1591-2009; eliminates need for discrete charge-detection ICs. |
| Protection Features | Short-to-battery on USB pins, ±15kV air/±8kV contact ESD (ISO 10605 & IEC 61000-4-2), overtemperature shutdown, soft-start. |
| Operating Temperature | -40°C to +125°C ambient; qualified for under-hood and dashboard-mounted automotive applications. |
| I²C Interface | Standard-mode (100kHz) and fast-mode (400kHz); enables dynamic reconfiguration of USB voltage gain, current limit, and mode selection. |
Pinout & Package
MAX20037ATIA/V+T is housed in a thermally enhanced 28-pin TQFN package (5mm × 5mm, 0.5mm pitch) with exposed thermal pad. Pin assignment is validated per Maxim Integrated's official MAX20037 datasheet Rev. 2 (2018).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Accepts 4.5V–28V automotive battery input; connects to bulk capacitor and ESD protection network. |
| VOUT | Regulated output node | Delivers 5V/3.5A to USB VBUS; requires low-ESR ceramic output capacitors and inductor. |
| USBIN | USB data line input | Connects to USB upstream D+/D−; routes signals through integrated high-speed (480Mbps) analog switches. |
| USBOUT | USB data line output | Drives downstream device D+/D−; maintains signal integrity with <1pF switch capacitance. |
| ILIM | External current-limit set | Configures USB load current threshold via external resistor; enables precise 0.5A–3.5A programming. |
| SCL/SDA | I²C interface | Allows real-time adjustment of USB voltage compensation gain, charging mode, and fault reporting. |
| EN | Enable control | Active-high logic input; supports microcontroller-controlled power sequencing and remote wake-up. |
| PGND | Power ground | Dedicated low-impedance return path for high-current DC-DC and USB switching paths. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB host emulator | Eliminates discrete termination resistors and detection logic - supports Apple, Samsung, BC1.2, and YD/T 1591-2009 without firmware. |
| Programmable VBUS compensation | Adjusts output voltage by up to 200mV to offset IR drop in long captive cables (≤600mΩ), maintaining 5V ±5% at device port. |
| Spread-spectrum modulation | Reduces peak EMI by >10dB across AM band (530–1710kHz), easing compliance with CISPR 25 Class 5. |
| Short-to-battery protected USB pins | Withstands 12V–28V shorts on USB D+/D− lines without latch-up or damage - critical for serviceability in automotive cabins. |
| SYNC I/O capability | Enables synchronization to external clock or daisy-chaining multiple converters to avoid beat frequencies in multi-rail systems. |
Applications
| Infotainment Head Unit USB Port | Center Console Fast-Charging Hub |
|---|---|
Use Scenario: In-dash navigation system with dual USB-A ports powering GPS devices, smartphones, and wireless CarPlay adapters. IC Role / Device Role / Timing Role: Primary USB power management IC providing regulated 5V/3.5A, protocol emulation, and data-line switching. Use Value: Maintains stable VBUS despite 400mΩ cable resistance; detects Apple 2.1A and Samsung 2A devices instantly without host CPU intervention. | Use Scenario: Multi-port center console module supplying simultaneous fast charging to two tablets and one smartphone in premium vehicles. IC Role / Device Role / Timing Role: Dual-role power controller handling both USB power delivery and high-speed data pass-through for OTG functionality. Use Value: Enables concurrent charging and data transfer at 480Mbps while suppressing EMI that could interfere with nearby Bluetooth/WiFi antennas. |
| Rear Seat Entertainment (RSE) System | Automotive Telematics Control Unit (TCU) |
Use Scenario: Overhead-mounted RSE screen with integrated USB port for passenger tablet charging and firmware updates. IC Role / Device Role / Timing Role: Isolated USB power source with short-to-battery protection and thermal foldback during extended high-load operation. Use Value: Survives accidental short circuits caused by dropped accessories; operates reliably at 105°C ambient inside sun-exposed headliners. | Use Scenario: Cellular-connected TCU requiring USB-based diagnostics, firmware download, and optional peripheral attachment (e.g., GNSS dongle). IC Role / Device Role / Timing Role: Secure USB interface with BC1.2 CDP emulation and ±15kV ESD protection on data lines. Use Value: Ensures robust communication during roadside diagnostics even after repeated hot-plug cycles and electrostatic discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB host adapter emulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20038ATIA/V+T | Same architecture but provides short-to-battery protection on USB pins instead of short-to-VBUS (MAX20037); different fault response behavior. | Preferred for systems where USB data lines may be exposed to battery-level faults (e.g., rear-seat ports with unshielded harnesses). | Select MAX20038ATIA/V+T when USB D+/D− routing passes near 12V domains; MAX20037ATIA/V+T suits front-panel ports with tighter ESD control. |
| TPS65987D-SR | USB-C PD controller with integrated buck converter; supports USB Power Delivery 3.0, not BC1.2 or proprietary emulations. | Targets next-gen USB-C automotive docks; lacks Apple/Samsung legacy termination and YD/T 1591-2009 support. | Choose TPS65987D-SR only if migrating to USB-C PD; retain MAX20037ATIA/V+T for cost-sensitive USB-A designs requiring broad legacy compatibility. |
Compared with MAX20038ATIA/V+T, the MAX20037ATIA/V+T offers superior short-to-VBUS protection for USB data lines - essential when VBUS is routed alongside D+/D− - while differing from TPS65987D-SR in its focus on USB-A BC1.2 interoperability rather than USB-C PD negotiation, making it optimal for retrofit and mid-tier automotive platforms.
Availability
MAX20037ATIA/V+T is available at Aetrix Electronics and suitable for automotive infotainment systems, center-console charging hubs, and telematics control units requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.
Supply support for MAX20037ATIA/V+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for automotive, industrial, and communications applications.
The MAX20037ATIA/V+T belongs to Maxim's automotive USB power management product line, engineered specifically to replace multi-chip USB host solutions in vehicles with a single IC that handles regulation, protocol emulation, protection, and cable-drop compensation.
FAQ
What is the maximum supported USB cable resistance compensation for MAX20037ATIA/V+T?
The MAX20037ATIA/V+T supports up to 600 mΩ USB cable resistance compensation via its programmable feedback-adjustment circuit. This allows the IC to increase VBUS output voltage by up to 200 mV to maintain 5V ±5% at the connected device port - a critical capability for long captive cables used in automotive center consoles and overhead modules. The compensation gain is configured through I²C registers or external resistors.
Does MAX20037ATIA/V+T support USB On-The-Go (OTG) functionality?
Yes, the MAX20037ATIA/V+T is compatible with the USB On-The-Go specification. Its integrated high-speed analog switches (480 Mbps) and bidirectional data-path control enable seamless role swapping between host and peripheral modes. When paired with a compatible microcontroller, the MAX20037ATIA/V+T supports OTG negotiation and VBUS toggling without requiring additional level shifters or direction-control logic.
What protection features does MAX20037ATIA/V+T provide on its USB pins?
The MAX20037ATIA/V+T provides short-to-VBUS protection on its USB pins - meaning it detects and safely limits current if D+ or D− is shorted to the 5V VBUS line. It also delivers ±15kV air-gap and ±8kV contact ESD protection per ISO 10605 and IEC 61000-4-2 standards. These protections ensure robustness against common in-vehicle fault conditions such as connector misinsertion or cable damage.
Can MAX20037ATIA/V+T operate across the full automotive temperature range?
Yes, the MAX20037ATIA/V+T is specified for continuous operation from -40°C to +125°C ambient temperature and is AEC-Q100 qualified. Its thermal design - including the exposed-pad TQFN-28 package and internal overtemperature protection - ensures reliable performance in demanding locations such as dashboard-mounted infotainment units or under-seat telematics modules exposed to solar loading.
How is USB charging mode detection implemented in MAX20037ATIA/V+T?
The MAX20037ATIA/V+T implements USB charging mode detection using integrated termination resistors and comparator-based logic - no external components or host processor involvement required. It natively identifies Apple 1A/2.1A, Samsung Galaxy Tablet 2A, BC1.2 CDP/DCP/SDP, and China YD/T 1591-2009 modes by measuring D+/D− voltage states and applying predefined resistor thresholds. Detection occurs within 100 ms of device attach.
MAX20037ATIA/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3.5A
- Frequency - Switching:
- 275kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TQFN (5x5)
MAX20037ATIA/V+T FAQ
1.How can I place an order for MAX20037ATIA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20037ATIA/V+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX20037ATIA/V+T reliable?
The price and inventory of MAX20037ATIA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20037ATIA/V+T is usually 5 days.
3.What payment methods are accepted for MAX20037ATIA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20037ATIA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20037ATIA/V+T?
MAX20037ATIA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20037ATIA/V+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX20037ATIA/V+T?
For technical support, including MAX20037ATIA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20037ATIA/V+T requirements.
6.How does Aetrix verify that MAX20037ATIA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20037ATIA/V+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX20037ATIA/V+T meets industry standards.
7.What is the process for return or replacement of MAX20037ATIA/V+T?
All MAX20037ATIA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20037ATIA/V+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX20037ATIA/V+T part is unused and in its original packaging.
Return procedure for MAX20037ATIA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20037ATIA/V+T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
