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Analog Devices Inc./Maxim Integrated MAX5090BATE+T
- Part No.:
- MAX5090BATE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX5090BATE+T.pdf
- Description:
- IC REG BUCK 5V 2A 16TQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX5090BATE+T from Maxim Integrated is a high-efficiency, 76V-input synchronous step-down DC-DC converter with fixed 5.0V output, delivering up to 2A continuous current, operating across -40°C to +125°C, and featuring internal 0.26Ω high-side DMOS FET, 310µA no-load quiescent current, and 127kHz fixed-frequency PWM control. It serves as the primary power stage in automotive infotainment power supplies.
For engineers reviewing the MAX5090BATE+T datasheet, MAX5090BATE+T pinout, MAX5090BATE+T application, or MAX5090BATE+T equivalent, key selection criteria include input voltage range (6.5V–76V), thermal shutdown at +175°C, external synchronization capability (119–200kHz), soft-start programmability, and automotive-grade temperature operation.
Technical Context
The MAX5090BATE+T implements voltage-mode PWM control with VIN feed-forward for stable regulation across wide input transients. Its integrated high-side DMOS switch and internal frequency compensation eliminate need for external loop components.
It supports automatic pulse-skipping mode at light loads to maintain >85% efficiency down to 10mA, while enabling external clock synchronization via SYNC pin for EMI-sensitive systems. Undervoltage lockout (6.17V rising threshold) and hiccup-mode short-circuit protection ensure robust startup and fault recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6.5V to 76V - supports 12V/24V/48V industrial and automotive battery rails with headroom for load dump. |
| Output Voltage | Fixed 5.0V ±3% - tightly regulated for USB-powered peripherals and microcontroller I/O domains. |
| Max Output Current | 2A continuous - sufficient to power dual-core MCUs, CAN transceivers, and display drivers simultaneously. |
| Quiescent Current | 310µA at no load - enables always-on subsystems (e.g., wake-up logic) without excessive battery drain. |
| Switching Frequency | 127kHz fixed (or syncable 119–200kHz) - balances EMI performance, inductor size, and efficiency in space-constrained designs. |
| Thermal Shutdown | +175°C with 20°C hysteresis - protects against sustained overload while allowing recovery under intermittent fault conditions. |
| Package | 16-pin TQFN-EP (5mm × 5mm) - exposes thermal pad for direct PCB copper pour, enabling 2.67W dissipation at +70°C ambient. |
Pinout & Package
MAX5090BATE+T is housed in a 16-pin thin QFN package (5mm × 5mm) with exposed thermal pad (EP), rated for JEDEC 51 multilayer board thermal performance (θJA = 30°C/W). The EP must be soldered to SGND plane for thermal integrity but cannot serve as sole ground connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 LX | Switch node | Connection to inductor and Schottky diode cathode; carries high dv/dt switching waveform - requires tight layout and Kelvin grounding. |
| 3 BST | Bootstrap supply | Drives high-side gate via 0.22µF ceramic capacitor to LX; critical for sustaining 100% duty cycle capability during low-VIN operation. |
| 4 VIN | Main input supply | Accepts 6.5V–76V; requires local 68µF low-ESR bypass capacitor to PGND to suppress high-frequency ripple and prevent UVLO false triggering. |
| 5 VD | Internal LDO output | 7.8V regulated supply powering gate driver and analog circuitry; bypassed with 3.3µF ceramic to PGND to stabilize startup and transient response. |
| 6 SYNC | Frequency sync input | Accepts external clock (119–200kHz); pulled to SGND for internal 127kHz operation - enables deterministic EMI reduction in synchronized systems. |
| 7 SS | Soft-start timing | Controls ramp rate of output voltage via external capacitor; default internal soft-start is 700µs - prevents inrush current into downstream bulk capacitance. |
| 8 FB | Feedback sense | Connected directly to VOUT for fixed 5V version; senses output to regulate error amplifier - no external divider required. |
| 9 ON/OFF | Enable/shutdown control | Logic-level input (1.546V max rising threshold); drives high for operation, low for shutdown (19µA ISHDN). |
| 10 SGND | Signal ground | Must be connected to PGND externally; separates noise-sensitive analog reference paths from high-current power return. |
| 11, 15, 16 N.C. | No connection | Not internally bonded - leave unconnected and unpopulated on PCB. |
| 12 PGND | Power ground | High-current return path for LX, DRAIN, and input/output capacitors - requires low-impedance polygon pour tied to EP. |
| 13, 14 DRAIN | High-side FET drain | Internally connected to LX; provides Kelvin sense point for current-limit detection - routed separately from main LX trace. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 0.26Ω high-side DMOS FET | Reduces BOM count and conduction losses - achieves 92% peak efficiency at 1A/12VIN/5VOUT without external MOSFET. |
| Internal frequency compensation | Eliminates need for external Type-II/III compensation network - simplifies design and improves production yield for 100µH/100µF output filter. |
| Pulse-skipping light-load mode | Maintains >80% efficiency at 10mA output - extends battery life in standby modes without requiring complex control firmware. |
| Hiccup-mode short-circuit protection | Shuts down for 10ms then retries - prevents thermal runaway during sustained output shorts while preserving system-level fault logging. |
| Automotive temperature range | -40°C to +125°C junction operation - qualified per AEC-Q100 stress test flow for engine control, ADAS camera, and body electronics. |
Applications
| Automotive Infotainment Power Supply | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Powers 5V rail for touchscreen controller, audio codec, and USB hub in vehicle head unit with 24V battery input and load-dump transients. IC Role / Device Role / Timing Role: Primary buck regulator providing isolated, low-noise 5V/2A output with fast transient response to handle burst-mode display updates. Use Value: Internal 0.26Ω FET and 310µA quiescent current enable compact, thermally efficient design meeting ISO 7637-2 pulse 5a requirements without heatsink. |
Use Scenario: Supplies 5V to isolated digital I/O channels, CAN transceivers, and microcontroller in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Central DC-DC stage converting 24V field bus to regulated 5V, synchronized to system clock to minimize conducted EMI in dense backplane layouts. Use Value: SYNC pin allows alignment with master timing controller, reducing spectral peaks in EMC testing; -40°C to +125°C rating ensures reliability in unventilated enclosures. |
| Railway Signaling Interface | Off-Highway Telematics Gateway |
|
Use Scenario: Generates 5V for Ethernet PHY, RS-485 transceivers, and safety-monitoring MCU in EN 50121-compliant signaling equipment powered from 72V traction battery. IC Role / Device Role / Timing Role: High-input-voltage buck converter with UVLO hysteresis (0.5V) preventing brownout oscillation during battery sag during train acceleration. Use Value: 76V absolute max rating and 6.17V UVLO threshold tolerate 100V transients per EN 50121-3-2; hiccup-mode protection avoids latch-up during lightning-induced surges. |
Use Scenario: Provides 5V power to GPS module, cellular modem, and sensor fusion MCU in construction equipment telematics box exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Main power IC operating continuously at +105°C ambient, managing thermal shutdown recovery cycles during extended idling. Use Value: Exposed pad + TQFN package delivers 2.67W dissipation at +70°C; +175°C thermal shutdown with 20°C hysteresis enables safe operation near diesel exhaust manifolds. |
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 |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5V–65V input, 5V fixed output, 1A max, requires external compensation, no SYNC pin | Lacks synchronization and 76V rating; suitable only for ≤65V systems with less stringent EMI requirements | Select when cost sensitivity outweighs need for 76V operation or EMI control; verify loop stability with external compensation. |
| TPS54260DGQR | 3.5V–60V input, adjustable output, 2.5A, 100kHz–2.5MHz sync range, external FET drive | Requires external high-side MOSFET and compensation; wider sync range but lower max input voltage | Choose for designs needing >127kHz switching or higher than 2A current; accept added complexity for flexibility. |
Compared with LM5164QPWPRQ1 and TPS54260DGQR, the MAX5090BATE+T uniquely combines 76V input tolerance, integrated 0.26Ω FET, fixed 5V output, and 119–200kHz synchronization in a single 5mm × 5mm package - making it optimal for space-constrained, high-reliability automotive and industrial 5V rail generation where input transients exceed 60V.
Availability
MAX5090BATE+T is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLC I/O modules, railway signaling interfaces, and off-highway telematics gateways requiring stable component supply across extended temperature and high-input-voltage conditions.
Supply support for MAX5090BATE+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 MAX5090BATE+T belongs to the MAXPower™ family of high-voltage DC-DC converters engineered specifically for reliable 5V/2A power delivery in harsh environments where input voltage can reach 76V and ambient temperature spans -40°C to +125°C.
FAQ
What is the maximum input voltage the MAX5090BATE+T can withstand?
The MAX5090BATE+T has an absolute maximum input voltage rating of +80V, with guaranteed operation up to +76V. Its undervoltage lockout activates at 6.17V (rising) and releases at 5.67V (falling), ensuring clean startup and shutdown across wide battery voltage ranges. This makes the MAX5090BATE+T suitable for 24V and 48V industrial systems subject to load dump transients.
Does the MAX5090BATE+T require external compensation components?
No, the MAX5090BATE+T features internal frequency compensation optimized for standard 100µH inductors and 100µF output capacitors. This eliminates external Type-II or Type-III compensation networks, reducing design time and component count. The internal compensation ensures stable loop response across the full -40°C to +125°C temperature range without tuning.
How does the MAX5090BATE+T manage efficiency at light loads?
The MAX5090BATE+T automatically enters pulse-skipping mode below ~60mA output current, reducing switching losses while maintaining regulation. This achieves >80% efficiency at 10mA load and only 310µA quiescent current at no load - critical for always-on subsystems in automotive and industrial applications where standby power budget is constrained.
Can the MAX5090BATE+T be synchronized to an external clock?
Yes, the MAX5090BATE+T supports external synchronization via its SYNC pin, accepting clock frequencies from 119kHz to 200kHz. When an external clock is applied for four consecutive cycles, the device locks to it and replaces its internal 127kHz oscillator. This capability enables deterministic EMI reduction in systems with multiple switching regulators.
What thermal protection mechanisms does the MAX5090BATE+T include?
The MAX5090BATE+T integrates thermal shutdown at +175°C with 20°C hysteresis, causing the device to halt switching and enter hiccup mode until die temperature falls to +155°C. It also includes cycle-by-cycle current limiting and hiccup-mode short-circuit protection - collectively preventing damage during overload, short-circuit, or inadequate heatsinking scenarios.
MAX5090BATE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN 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):
- 6.5V
- Voltage - Input (Max):
- 76V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 127kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX5090BATE+T FAQ
1.How can I place an order for MAX5090BATE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5090BATE+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 MAX5090BATE+T reliable?
The price and inventory of MAX5090BATE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5090BATE+T is usually 5 days.
3.What payment methods are accepted for MAX5090BATE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5090BATE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5090BATE+T?
MAX5090BATE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5090BATE+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 MAX5090BATE+T?
For technical support, including MAX5090BATE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5090BATE+T requirements.
6.How does Aetrix verify that MAX5090BATE+T is sourced from the original manufacturer or authorized distributors?
All MAX5090BATE+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 MAX5090BATE+T meets industry standards.
7.What is the process for return or replacement of MAX5090BATE+T?
All MAX5090BATE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX5090BATE+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 MAX5090BATE+T part is unused and in its original packaging.
Return procedure for MAX5090BATE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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