My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20038ATIE/V+
- Part No.:
- MAX20038ATIE/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX20038ATIE/V+.pdf
- Description:
- IC REG AUTO HI-CURRENT STEP-DOW
- Quantity:
- Payment:
- Shipping:
Inventory:2,651
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20038ATIE/V+ from Maxim Integrated is an automotive-grade synchronous step-down converter with integrated USB host charger adapter emulation, 5V/3.5A output, short-to-battery protection on USB pins, I²C programmability, and support for USB BC1.2 CDP/DCP modes - deployed in infotainment head units and telematics gateways requiring robust USB power delivery.
For engineers reviewing the MAX20038ATIE/V+ datasheet, MAX20038ATIE/V+ pinout, MAX20038ATIE/V+ application, or MAX20038ATIE/V+ equivalent, key selection considerations include its 4.5V–28V input range, 310kHz–2.2MHz programmable switching frequency, ±15kV ISO 10605 ESD rating, USB 480Mbps data switch integration, and TQFN-28 package with short-to-battery protected USB terminals.
Technical Context
The MAX20038ATIE/V+ integrates a fully synchronous buck controller with internal high-side and low-side MOSFETs, enabling 5V/3.5A output from 4.5V–28V automotive input. It implements USB BC1.2-compliant charge detection (CDP/DCP/SDP), Apple/Samsung termination resistors, and VBUS reset timing of 16ms.
Its protection architecture includes short-to-battery on USB pins (distinguishing it from MAX20037), ±15kV air-gap ESD per ISO 10605, overtemperature shutdown, and soft-start to limit inrush. Frequency is programmable via I²C or external resistor from 310kHz to 2.2MHz, with optional spread-spectrum mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V - supports cold-crank (4.5V) and load-dump (40V transient tolerance) |
| Output Voltage | 5V fixed - regulated output for USB host port compliance |
| Max Output Current | 3.5A - continuous DC-DC output current capability |
| Switching Frequency | 310kHz to 2.2MHz - programmable via I²C or resistor; enables EMI optimization and small external components |
| USB Data Rate Support | 480Mbps (HS), 12Mbps (FS), 1.5Mbps (LS) - full-speed USB 2.0 signal integrity maintained |
| ESD Rating | ±15kV air / ±8kV contact per ISO 10605 - protects USB interface against automotive-level electrostatic discharge |
| Operating Temp | −40°C to +125°C - qualified for under-hood and dashboard-mounted automotive electronics |
Pinout & Package
MAX20038ATIE/V+ is housed in a 5mm × 5mm, 28-pin thermally enhanced TQFN package (exposed pad) with wettable flanks, optimized for automotive thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | DC-DC input supply | Accepts 4.5V–28V battery rail; includes overvoltage clamp for 40V load dump |
| VOUT | DC-DC regulated output | 5V/3.5A power rail for USB VBUS; internally compensated |
| USB_VBUS | USB power output terminal | Short-to-battery protected output; connects directly to USB connector VBUS |
| USB_D+/D− | USB 2.0 differential data path | 480Mbps-capable analog switches; integrated ESD diodes to GND and VBUS |
| I²C_SDA/SCL | Configuration interface | Standard-mode/fast-mode I²C bus (up to 400kHz); used for dynamic voltage/current tuning |
| EN | Enable control input | Active-high logic input; supports remote wake-up and system power sequencing |
| PGOOD | Power-good indicator | Open-drain output signals valid VOUT and stable USB_VBUS within ±5% |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB host charger emulator | Supports BC1.2 CDP/DCP, Apple 1A/2.1A, Samsung Galaxy Tablet 2A, and China YD/T 1591-2009 - eliminates need for discrete charge-detection IC |
| Programmable cable-drop compensation | Adjusts output voltage gain to offset up to 600mΩ cable resistance - maintains 5V at device port despite long harness drops |
| Short-to-battery protected USB pins | USB_VBUS, D+, and D− tolerate direct short to battery (28V) without latch-up or damage - critical for automotive harness fault resilience |
| Synchronous buck with spread-spectrum | Reduces peak EMI by >10dB across 150kHz–108MHz band - meets CISPR 25 Class 5 requirements without added shielding |
| I²C-configurable USB current limit | User-selectable 0.5A to 3.0A USB load current threshold via register write - enables dynamic port power management |
Applications
| Automotive Infotainment Head Unit | Telematics Control Unit (TCU) |
|---|---|
Use Scenario: USB port in center-stack display providing charging and data sync for smartphones and navigation devices. IC Role / Device Role / Timing Role: Primary USB power delivery and BC1.2-compliant charge negotiation IC; regulates VBUS, detects device type, and manages current limit. Use Value: Delivers stable 5V/3.5A while compensating for 600mΩ cable drop and surviving 40V load dumps - ensures uninterrupted connectivity during engine cranking. | Use Scenario: Embedded cellular gateway with dual USB ports for firmware updates and diagnostic access. IC Role / Device Role / Timing Role: USB host power manager with remote wake-up (EN pin) and VBUS reset (16ms) for controlled enumeration after sleep. Use Value: Enables low-power sleep mode with <1μA quiescent current and fast, reliable re-enumeration - reduces TCU standby power and improves OTA update reliability. |
| Dedicated USB Charging Port (DCP) | Automotive Rear-Seat Entertainment (RSE) |
Use Scenario: Fixed-output 5V/2.1A USB port labeled "Charging Only" in center console or armrest. IC Role / Device Role / Timing Role: Dedicated charger emulator with forced DCP mode and no data switching - disables D+/D− path while maintaining high-current VBUS. Use Value: Complies with USB BC1.2 DCP specification and delivers full 2.1A without enumeration delay - faster charging than SDP-limited ports. | Use Scenario: Seatback-mounted tablet dock with USB-powered audio/video streaming and charging. IC Role / Device Role / Timing Role: Dual-role USB power manager supporting both host (for peripherals) and peripheral (for content sync) via OTG-compatible signaling. Use Value: Supports USB On-the-Go with automatic role swap and integrated iPod/iPhone/Samsung termination - enables plug-and-play compatibility with consumer tablets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB host power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20037ATIE/V+ | Short-to-VBUS (not short-to-battery) protection on USB pins; otherwise identical feature set and pinout | Suitable where USB port faults are more likely to be VBUS shorts (e.g., connector debris) rather than battery-wire harness shorts | Select MAX20037ATIE/V+ when system-level fault analysis shows dominant VBUS short risk and lower cost is prioritized |
| TPS65987D-SR | USB-C PD 3.0 controller with 20V/5A buck-boost; lacks native BC1.2 CDP/DCP emulation and short-to-battery USB protection | Targets USB-C PD applications requiring variable VBUS (3.3–20V); not drop-in for legacy USB-A host ports | Choose TPS65987D-SR only when upgrading to USB-C PD and adding MCU-based BC1.2 emulation via firmware |
Compared with MAX20037ATIE/V+, the MAX20038ATIE/V+ adds short-to-battery protection on USB pins - essential for front-end harness routing in vehicles - while both share identical I²C configuration, cable-drop compensation, and BC1.2 compliance. TPS65987D-SR requires redesign for USB-C and external charge-detection logic.
Availability
MAX20038ATIE/V+ is available at Aetrix Electronics and suitable for automotive infotainment, telematics control units, and dedicated USB charging ports requiring stable component supply, AEC-Q100 qualification, and production-ready packaging.
Supply support for MAX20038ATIE/V+ 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 systems - emphasizing high reliability, small footprint, and AEC-Q100 compliance.
The MAX20038ATIE/V+ belongs to Maxim's automotive USB power management product line, engineered specifically to replace multi-chip USB host solutions in vehicle infotainment and connectivity modules with single-package robustness and BC1.2/USB-OTG interoperability.
FAQ
What is the primary function of the MAX20038ATIE/V+ in automotive USB systems?
The MAX20038ATIE/V+ serves as a single-chip automotive USB host power manager, integrating a 3.5A synchronous buck converter, BC1.2-compliant charge detection (CDP/DCP/SDP), USB 480Mbps data switching, and short-to-battery protected USB pins. It replaces discrete DC-DC + USB switch + charge-detect IC combinations in head units and TCUs, reducing BOM count and layout area while meeting ISO 10605 and AEC-Q100 requirements.
Does the MAX20038ATIE/V+ support Apple and Samsung fast-charging protocols?
Yes, the MAX20038ATIE/V+ includes factory-trimmed internal termination resistors for Apple 1.0A, Apple 2.1A, and Samsung Galaxy Tablet 2A charging modes. It performs automatic detection and emulation without external components or firmware, enabling plug-and-play compatibility with iOS and Android devices in automotive environments.
What protection features distinguish the MAX20038ATIE/V+ from the MAX20037ATIE/V+?
The MAX20038ATIE/V+ provides short-to-battery protection on USB_VBUS, D+, and D− pins - meaning those terminals survive direct connection to the 12V/24V battery rail without damage. In contrast, the MAX20037ATIE/V+ offers short-to-VBUS protection only. This makes MAX20038ATIE/V+ preferred for front-end USB ports exposed to harness-level faults in automotive wiring.
Can the MAX20038ATIE/V+ compensate for voltage drop across long USB cables?
Yes, the MAX20038ATIE/V+ includes a user-programmable voltage gain amplifier that adjusts the feedback reference to offset voltage drop across captive cables up to 600mΩ. This ensures 5V ±5% is delivered at the connected device port - critical for maintaining USB 2.0 signal integrity and stable charging in vehicle installations with extended harnesses.
Is the MAX20038ATIE/V+ pin-compatible with other devices in the MAX20037/MAX20038 family?
Yes, all MAX20037/MAX20038 variants, including MAX20038ATIE/V+, share identical 28-pin TQFN package, pinout, and footprint. This allows hardware reuse across designs targeting different protection profiles (e.g., swapping MAX20037 for MAX20038) without PCB revision - provided firmware and configuration registers are updated to match the selected device's protection and feature set.
MAX20038ATIE/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Strip
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX20038ATIE/V+ FAQ
1.How can I place an order for MAX20038ATIE/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20038ATIE/V+ 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 MAX20038ATIE/V+ reliable?
The price and inventory of MAX20038ATIE/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20038ATIE/V+ is usually 5 days.
3.What payment methods are accepted for MAX20038ATIE/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20038ATIE/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20038ATIE/V+?
MAX20038ATIE/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20038ATIE/V+ 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 MAX20038ATIE/V+?
For technical support, including MAX20038ATIE/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20038ATIE/V+ requirements.
6.How does Aetrix verify that MAX20038ATIE/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20038ATIE/V+ 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 MAX20038ATIE/V+ meets industry standards.
7.What is the process for return or replacement of MAX20038ATIE/V+?
All MAX20038ATIE/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20038ATIE/V+, 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 MAX20038ATIE/V+ part is unused and in its original packaging.
Return procedure for MAX20038ATIE/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20038ATIE/V+ 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…
