My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX5035DASA+T
- Part No.:
- MAX5035DASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX5035DASA+T.pdf
- Description:
- IC REG BUCK ADJ 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,691
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX5035DASA+T from Maxim Integrated is a high-voltage, adjustable-output step-down DC-DC converter with 7.5V–76V input range, 1A output current capability, and internal 0.4Ω high-side DMOS FET. It operates at fixed 125kHz PWM mode under heavy load and switches to pulse-skipping for 270µA no-load quiescent current-enabling automotive power systems requiring wide VIN tolerance and low standby loss.
For engineers reviewing the MAX5035DASA+T datasheet, MAX5035DASA+T pinout, MAX5035DASA+T application, or MAX5035DASA+T equivalent, key selection criteria include adjustable 1.25V–13.2V output via FB resistor divider, automotive-grade -40°C to +125°C operation, integrated thermal shutdown and hiccup-mode short-circuit protection, and SO-8 package compatibility with board-level EMI control requirements.
Technical Context
The MAX5035DASA+T implements voltage-mode PWM control with feed-forward compensation and internal frequency compensation-eliminating external loop components. Its architecture integrates a high-voltage DMOS switch, bootstrap gate driver (BST), and internal 7.8V regulator (VD) to power analog circuitry and gate drive.
It features automatic transition between PWM and pulse-skipping modes based on load current, with PFM threshold set at 55–130mA. Undervoltage lockout triggers at 5.2V (internal) or programmable via ON/OFF pin, and thermal shutdown activates at +160°C with +20°C hysteresis.
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 | Adjustable 1.25V to 13.2V - set via external resistor divider on FB pin; VFB regulation point is 1.221V (±29mV). |
| Max Output Current | 1A continuous - limited by thermal dissipation in SO-8 package (qJA = 170°C/W); peak switch current limit is 1.3–2.5A. |
| Switching Frequency | Fixed 125kHz (105–137kHz over temp) - enables predictable EMI filtering and compact magnetics design without frequency jitter. |
| Quiescent Current | 270µA at no load - ensures ultra-low standby power in always-on automotive modules like telematics or ADAS sensors. |
| Shutdown Current | 10µA typical - allows deep-sleep operation when ON/OFF pin is pulled low; supports battery-backed systems with multi-year shelf life. |
| Internal FET RDS(ON) | 0.4Ω typical - reduces conduction loss and eliminates need for external high-voltage MOSFET, lowering BOM count and layout complexity. |
Pinout & Package
MAX5035DASA+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and automotive-qualified (-40°C to +125°C). The package uses JEDEC MS-012AC footprint with 1.27mm pitch and exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap capacitor node | Connects 0.1µF ceramic cap to LX; supplies gate drive voltage for internal high-side DMOS switch during switching cycles. |
| VD | Internal regulator output | Provides ~7.8V regulated supply for internal analog circuitry and gate driver; requires 0.1µF bypass to GND. |
| SGND | Signal ground reference | Internal analog ground node; must be tied directly to system GND plane to maintain feedback accuracy and noise immunity. |
| FB | Feedback input | Senses output voltage via resistor divider; regulates VOUT to 1.221V at FB pin-enables precise adjustable output configuration. |
| ON/OFF | Enable/shutdown control | Logic-level input: >1.69V (typ) enables operation; <1.5V disables converter and reduces IQ to 10µA; includes 100mV hysteresis. |
| GND | Power ground return | Main power return path for LX switch current and VD regulator; must be low-impedance star-point connection with input/output capacitors. |
| VIN | Main input supply | Accepts 7.5V–76V DC; requires local low-ESR bulk capacitor (e.g., 68µF) placed adjacent to pin to suppress high-frequency ripple. |
| LX | Switch node | Drives external inductor; connects internally to source of high-side DMOS; voltage swings from GND to VIN during operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-voltage DMOS switch | 0.4Ω RDS(ON) enables single-chip 76V buck conversion without external MOSFET-reducing solution size and gate-drive complexity. |
| Internal frequency compensation | Eliminates need for external compensation network; ensures stable loop response across full input/output/load/temperature range. |
| Automotive temperature grade | -40°C to +125°C operation with guaranteed specs-meets AEC-Q100 stress test requirements for engine bay and chassis-mounted electronics. |
| Hiccup-mode short-circuit protection | Shuts down on sustained overload, cools, then retries-prevents thermal runaway and enables self-recovery in fault conditions. |
| Low-noise pulse-skipping mode | Maintains >85% efficiency at 1mA load while holding IQ ≤270µA-critical for battery-powered always-on subsystems. |
Applications
| Automotive Body Control Module | Industrial Sensor Hub Power |
|---|---|
Use Scenario: Powering microcontrollers, CAN transceivers, and LIN interfaces in door modules or seat controllers from 12V battery with load dump immunity. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator delivering clean, regulated rail with fast transient response to pulsed actuator loads. Use Value: 76V input rating withstands ISO 7637-2 Pulse 5a (load dump up to 60V/100ms); 1A output supports multiple peripherals without external LDOs. | Use Scenario: Supplying 3.3V to MEMS accelerometers, pressure sensors, and wireless SoCs in factory-floor condition monitoring nodes. IC Role / Device Role / Timing Role: High-efficiency intermediate regulator converting 24V plant bus to low-noise sensor rail with minimal heat buildup in sealed enclosures. Use Value: 270µA quiescent current extends battery life in energy-harvesting or backup-supply configurations; SO-8 package fits dense PCB layouts. |
| Railway Onboard Telematics | Commercial HVAC Controller |
Use Scenario: Providing isolated 5V/12V rails for GPS receivers, cellular modems, and data loggers in rolling stock powered by 72V traction battery systems. IC Role / Device Role / Timing Role: Robust primary DC-DC stage handling wide input variation (40–110V) due to regenerative braking and battery aging. Use Value: Fixed 125kHz switching enables predictable EMI filter design meeting EN 50121-3-2; thermal shutdown prevents failure during prolonged high-temp operation. | Use Scenario: Generating 5V for MCU, display, and relay drivers in wall-mounted HVAC thermostats powered from 24VAC transformer rectified to ~32VDC. IC Role / Device Role / Timing Role: Compact, thermally efficient buck converter replacing linear regulators to avoid excessive heat in confined plastic enclosures. Use Value: Internal 0.4Ω FET achieves >90% efficiency at 500mA-reducing thermal derating and enabling smaller heatsinks or no heatsink. |
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 |
|---|---|---|---|
| LM5017MM/NOPB | 4.5V–75V input, 600mA output, 100kHz–1MHz adjustable frequency, requires external compensation. | Lower output current; better suited for space-constrained designs needing higher frequency or spread-spectrum EMI reduction. | Select LM5017MM/NOPB when adjustable frequency and external loop tuning are required, and 600mA output suffices. |
| TPS54360BDDAR | 3.5V–60V input, 3.5A output, 100kHz–2.5MHz sync clock input, integrated soft-start and tracking. | Higher current and wider frequency range; lacks automotive temp grade but offers enhanced protection features (UVLO hysteresis, cycle-by-cycle current limit). | Select TPS54360BDDAR for higher-current industrial applications where 60V max VIN is acceptable and sync capability is needed. |
Compared with LM5017MM/NOPB and TPS54360BDDAR, MAX5035DASA+T delivers 1A output with lower quiescent current (270µA vs. 100µA–1.5mA), fixed 125kHz operation for deterministic EMI, and guaranteed -40°C to +125°C performance-making it optimal for cost-sensitive, thermally constrained automotive and industrial modules.
Availability
MAX5035DASA+T is available at Aetrix Electronics and suitable for automotive body control, industrial sensor hubs, railway telematics, and commercial HVAC controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX5035DASA+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 belongs to Maxim's MAXPower family of high-voltage DC-DC converters, engineered specifically for robust, low-component-count power solutions in harsh environments where wide input range and automotive qualification are mandatory.
FAQ
What is the output voltage adjustment range for MAX5035DASA+T?
The MAX5035DASA+T supports an adjustable output voltage range from 1.25V to 13.2V, set using an external resistor divider connected to the FB pin. Its internal feedback reference is 1.221V (±29mV), enabling precise regulation across the full range. This makes MAX5035DASA+T suitable for custom rail generation in systems requiring non-standard voltages such as 2.5V, 3.3V, 5V, or 9V.
Does MAX5035DASA+T require external compensation components?
No, MAX5035DASA+T includes internal frequency compensation optimized for stability with standard external components (inductor, output capacitor, feedback resistors). No external compensation network is needed-reducing design time and bill-of-materials cost. This feature is confirmed in the datasheet's "Internal Frequency Compensation" section and block diagram.
What protection features does MAX5035DASA+T include?
MAX5035DASA+T integrates undervoltage lockout (5.2V internal threshold), cycle-by-cycle current limiting, hiccup-mode short-circuit protection, thermal shutdown (+160°C trip, +140°C recovery), and BST/LX voltage clamping. These protections ensure reliable operation in automotive and industrial environments where input transients, overloads, and elevated ambient temperatures occur.
Can MAX5035DASA+T operate from a 12V automotive battery with load dump events?
Yes, MAX5035DASA+T is rated for 76V absolute maximum input and operates continuously from 7.5V to 76V. Its 76V rating exceeds ISO 7637-2 Pulse 5a (60V/100ms), making it suitable for direct connection to 12V automotive batteries-even during load dump transients-without external TVS clamping in many implementations.
What is the thermal resistance and maximum power dissipation of MAX5035DASA+T in SO-8 package?
MAX5035DASA+T in SO-8 package has θJA = 170°C/W. At TA = +70°C, its continuous power dissipation is 471mW, derating 5.9mW/°C above that. This corresponds to ~0.5A–0.7A practical output current depending on VIN and ambient conditions-consistent with its 1A rating under ideal heatsinking and lower VIN.
MAX5035DASA+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:
- Active
- 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:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX5035DASA+T FAQ
1.How can I place an order for MAX5035DASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5035DASA+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 MAX5035DASA+T reliable?
The price and inventory of MAX5035DASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5035DASA+T is usually 5 days.
3.What payment methods are accepted for MAX5035DASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5035DASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5035DASA+T?
MAX5035DASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5035DASA+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 MAX5035DASA+T?
For technical support, including MAX5035DASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5035DASA+T requirements.
6.How does Aetrix verify that MAX5035DASA+T is sourced from the original manufacturer or authorized distributors?
All MAX5035DASA+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 MAX5035DASA+T meets industry standards.
7.What is the process for return or replacement of MAX5035DASA+T?
All MAX5035DASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX5035DASA+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 MAX5035DASA+T part is unused and in its original packaging.
Return procedure for MAX5035DASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX5035DASA+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…
