My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX5035DUSA-T
- Part No.:
- MAX5035DUSA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX5035DUSA-T.pdf
- Description:
- IC REG BUCK ADJ 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,419
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX5035DUSA-T from Maxim Integrated is an automotive-grade, adjustable-output, high-voltage step-down DC-DC converter with 7.5V–76V input range, 1.25V–13.2V output adjustability, 1A output current capability, and internal 0.4Ω high-side DMOS FET. It delivers up to 94% efficiency at 24VIN/0.5A/12VOUT, operates over –40°C to +125°C, and targets power conversion in harsh automotive and industrial environments.
For engineers reviewing the MAX5035DUSA-T datasheet, MAX5035DUSA-T pinout, MAX5035DUSA-T application, or MAX5035DUSA-T equivalent, key selection criteria include its wide-input voltage support, integrated frequency compensation, pulse-skipping light-load mode (270µA quiescent current), thermal shutdown (+160°C trip), and automotive qualification (–40°C to +125°C).
Technical Context
The MAX5035DUSA-T implements a voltage-mode PWM controller with feed-forward compensation and fixed 125kHz switching frequency, automatically transitioning to pulse-skipping mode below ~85mA load to maintain high light-load efficiency. Its internal high-side DMOS switch eliminates external gate-drive complexity while enabling operation up to 76V input.
It integrates undervoltage lockout (5.2V typ), cycle-by-cycle current limit (1.3–2.5A), hiccup-mode short-circuit protection, and thermal shutdown with 20°C hysteresis. The FB pin regulates to 1.221V (typ), supporting precise output adjustment via external resistor divider - confirmed for MAX5035D versions in all electrical tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7.5V to 76V - supports direct connection to 24V/48V industrial buses and 12V/24V automotive batteries with headroom for load dump transients. |
| Output Voltage Range | 1.25V to 13.2V (adjustable) - set via external resistive divider on FB pin; VFB = 1.221V (typ) enables stable regulation across full temperature range. |
| Max Output Current | 1A - limited by package thermal dissipation (SO-8: 471mW @ +70°C); actual current depends on VIN, VOUT, and PCB heatsinking. |
| Quiescent Current | 270µA (typ) at no load - enables always-on systems (e.g., CAN nodes, telematics) without excessive battery drain. |
| Switching Frequency | 125kHz (fixed) - balances EMI control, inductor size, and efficiency; oscillator tolerance ±10kHz ensures predictable filter design. |
| Thermal Shutdown | +160°C junction trip with +140°C restart - protects against sustained overload or poor heatsinking in enclosed automotive modules. |
| Shutdown Current | 10µA (typ) - reduces system standby power when ON/OFF pin is pulled low, critical for low-power wake-up architectures. |
Pinout & Package
MAX5035DUSA-T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and automotive qualified (–40°C to +125°C). The SO package features gull-wing leads, JEDEC MS-012AC outline, and 170°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap capacitor connection | Connects 0.1µF ceramic capacitor between BST and LX to generate gate drive voltage for internal high-side DMOS switch. |
| VD | Internal regulator output | Provides ~7.8V regulated supply for internal circuitry; bypassed to GND with 0.1µF ceramic capacitor for stability. |
| SGND | Signal ground reference | Internal analog ground node; must be connected directly to system GND to avoid feedback error and noise coupling. |
| FB | Feedback input | Senses output voltage via external resistor divider; regulates to 1.221V (typ); determines final VOUT = 1.221 × (1 + R3/R4). |
| ON/OFF | Enable/shutdown control | Logic-level input: >1.69V (typ) enables operation; <1.53V (typ) disables; 100mV hysteresis prevents chatter during slow-rising VIN. |
| GND | Power ground | Main return path for high-current switch node (LX) and output capacitor; requires low-impedance star-ground connection. |
| VIN | Main input supply | Accepts 7.5V–76V DC; requires local low-ESR bypass capacitor (e.g., 68µF aluminum + 0.1µF ceramic) near pin. |
| LX | Switch node | Drives external Schottky diode (e.g., 50SQ100) and inductor; connects to BST capacitor; carries high di/dt switching current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side DMOS FET | 0.4Ω typical RDS(ON) - eliminates external MOSFET and driver, reducing BOM count and layout area while maintaining >90% efficiency at 12VIN/5VOUT. |
| Internal frequency compensation | Type III compensation network embedded - removes need for external compensation components, simplifying design and improving production yield. |
| Pulse-skipping light-load mode | Reduces IQ to 270µA (typ) - extends battery life in always-on automotive ECUs without sacrificing transient response. |
| Automotive temperature range | –40°C to +125°C operation - qualified per AEC-Q100 stress test requirements for under-hood and infotainment applications. |
| Hiccup-mode short-circuit protection | Auto-restarts after fault clearance - prevents thermal runaway during sustained output shorts while enabling automatic recovery without host intervention. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface circuits in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator converting 12V/24V battery rail with load dump immunity. Use Value: 76V input rating withstands ISO 7637-2 Pulse 5a (load dump), and 270µA quiescent current meets OEM sleep-mode current budgets. |
Use Scenario: Supplies isolated field I/O circuitry (e.g., 4–20mA loops, digital inputs) in programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability buck converter delivering stable 5V/12V from unregulated 24VDC industrial bus. Use Value: Thermal shutdown and hiccup protection ensure continuous operation in hot enclosures; adjustable output supports multiple downstream rails. |
| Railway Signaling Power Converter | Off-Highway Equipment Telematics |
Use Scenario: Converts 72V nominal traction battery to 5V for GPS, cellular modem, and MCU in train control units. IC Role / Device Role / Timing Role: Wide-input buck regulator operating across 40V–100V input range with robust EMI filtering. Use Value: Fixed 125kHz switching enables predictable EMI filter design; SO-8 package supports conformal coating for humidity resistance. |
Use Scenario: Powers telematics gateway in construction and agricultural machinery exposed to vibration, dust, and wide ambient temperatures. IC Role / Device Role / Timing Role: Main 3.3V/5V supply for ARM-based SoC, GNSS receiver, and LTE module in sealed IP67 enclosure. Use Value: –40°C to +125°C rating ensures cold-start reliability; 10µA shutdown current preserves battery during extended idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5008AMM/NOPB | Fixed 2.5MHz switching frequency; lower max input (75V); no integrated bootstrap diode; requires external compensation. | Higher frequency enables smaller magnetics but increases EMI sensitivity; less suitable for ultra-low-IQ battery systems. | Prefer LM5008AMM/NOPB for space-constrained designs needing compact inductors; avoid if thermal management or 270µA IQ is critical. |
| TPS54160DGQR | Adjustable 100kHz–2.5MHz frequency; 60V max input; 1.5A output; integrated soft-start; no internal VD regulator. | Lacks internal 7.8V bias rail - requires external LDO for gate drive; lower input voltage limits use in 72V rail applications. | Choose TPS54160DGQR for cost-sensitive industrial supplies below 60V; not recommended for automotive load dump or 76V systems. |
Compared with LM5008AMM/NOPB and TPS54160DGQR, the MAX5035DUSA-T uniquely combines 76V input tolerance, integrated VD regulator, automotive temperature grade, and sub-300µA quiescent current - making it optimal for ruggedized, battery-backed 12V/24V/48V systems where reliability and low standby loss are mandatory.
Availability
MAX5035DUSA-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, railway signaling converters, and off-highway telematics requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX5035DUSA-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 demanding industrial, automotive, and communications applications.
The MAX5035 series was engineered as a high-voltage, high-efficiency step-down converter family targeting automotive and industrial power conversion where wide input range, low quiescent current, and AEC-Q100 compliance are essential.
FAQ
What is the maximum input voltage supported by the MAX5035DUSA-T?
The MAX5035DUSA-T supports a maximum input voltage of 76V, with absolute maximum rating of +80V on the VIN pin. This allows direct connection to 24V and 48V industrial buses and automotive systems subject to ISO 7637-2 load dump transients. Operation above 76V is not guaranteed and may cause permanent damage.
How do I set the output voltage for the MAX5035DUSA-T?
The MAX5035DUSA-T uses the FB pin to regulate output voltage via an external resistor divider. With VFB = 1.221V (typ), set VOUT using R3 and R4 where VOUT = 1.221 × (1 + R3/R4). R4 should be ≤15kΩ; typical values for 5V output are R3 = 41.2kΩ and R4 = 13.3kΩ, as validated in the MAX5035 datasheet.
Does the MAX5035DUSA-T require external compensation components?
No, the MAX5035DUSA-T includes internal Type III frequency compensation optimized for stability with standard output LC filters. External compensation is not required - this eliminates two to four passive components, reduces layout sensitivity, and improves production consistency compared to non-compensated controllers like the LM5008.
What protection features does the MAX5035DUSA-T include?
The MAX5035DUSA-T integrates undervoltage lockout (5.2V typ), cycle-by-cycle peak current limiting (1.3–2.5A), hiccup-mode short-circuit protection, thermal shutdown (+160°C trip with +20°C hysteresis), and BST overvoltage protection. These features enable autonomous fault recovery and eliminate need for external protection circuitry in most applications.
Is the MAX5035DUSA-T qualified for automotive applications?
Yes, the MAX5035DUSA-T is automotive qualified with operation from –40°C to +125°C and packaging marked "/V+", indicating AEC-Q100 Grade 1 qualification. Its SO-8 package, 76V input rating, and robust protection suite meet requirements for body electronics, infotainment, and telematics modules in passenger and commercial vehicles.
MAX5035DUSA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7.5V
- Voltage - Input (Max):
- 76V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 13.2V
- Current - Output:
- 1A
- Frequency - Switching:
- 125kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX5035DUSA-T FAQ
1.How can I place an order for MAX5035DUSA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5035DUSA-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 MAX5035DUSA-T reliable?
The price and inventory of MAX5035DUSA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5035DUSA-T is usually 5 days.
3.What payment methods are accepted for MAX5035DUSA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5035DUSA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5035DUSA-T?
MAX5035DUSA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5035DUSA-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 MAX5035DUSA-T?
For technical support, including MAX5035DUSA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5035DUSA-T requirements.
6.How does Aetrix verify that MAX5035DUSA-T is sourced from the original manufacturer or authorized distributors?
All MAX5035DUSA-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 MAX5035DUSA-T meets industry standards.
7.What is the process for return or replacement of MAX5035DUSA-T?
All MAX5035DUSA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX5035DUSA-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 MAX5035DUSA-T part is unused and in its original packaging.
Return procedure for MAX5035DUSA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX5035DUSA-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…
