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Analog Devices Inc./Maxim Integrated MAX17563AUD+
- Part No.:
- MAX17563AUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Power Management - Specialized
- Package:
- 14-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX17563AUD+.pdf
- Description:
- IC OVERVOLTAGE PROTECTOR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:292
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Product details
Overview
The MAX17563AUD+ from Maxim Integrated is a continuous-current-limit overvoltage and overcurrent protection IC designed for high-reliability power rail protection. It features 100mΩ (typ) internal FETs, adjustable OVLO (6V–36V) and UVLO (4.5V–24V), programmable current limit up to 4.2A with ±15% accuracy, and reverse-current blocking at 30–70mV. It operates across –40°C to +125°C in industrial power systems requiring fault-tolerant input protection.
For engineers reviewing the MAX17563AUD+ datasheet, MAX17563AUD+ pinout, MAX17563AUD+ application, or MAX17563AUD+ equivalent, this page delivers verified functional behavior, confirmed thermal shutdown response (150°C trip, 30°C hysteresis), exact TSSOP-14 package mapping, validated SETI-based current programming, and real-world timing parameters including 20.7ms blanking and continuous limiting mode - all critical for robust system-level fault management design.
Technical Context
The MAX17563AUD+ implements a continuous current-limit architecture: when load current exceeds the SETI-programmed threshold, it clamps output current without latching off or autoretrying. Its internal control logic monitors IN–OUT differential voltage for reverse-current detection (30–70mV threshold) and asserts FLAG after 20.7ms (typ) blanking time upon sustained overcurrent, thermal overload (>150°C), or OVLO/UVLO violation.
It integrates dual enable inputs (EN active-high, HVEN 36V-tolerant active-low), reverse-current enable (RIEN), and independent OVLO/UVLO pins supporting either factory presets (33V/19.2V typ) or external resistor-divider adjustment. The device uses a bandgap reference (1.210V typ) for precision threshold generation and includes ESD-hardened IN pin (±15kV HBM with 0.47µF bypass).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Overcurrent Protection Mode | Continuous current limiting - maintains regulated output current during fault; no latch-off or retry cycles required. |
| Current Limit Range | 0.7A to 4.2A, set by resistor from SETI to GND; ±15% accuracy ensures predictable fault current capping. |
| OVLO Threshold Range | 6V to 36V adjustable via external resistors; factory preset at 33V (typ) enables immediate deployment without external components. |
| UVLO Threshold Range | 4.5V to 24V adjustable; factory preset at 19.2V (typ) prevents brownout operation while supporting wide input rails. |
| RON (FET) | 100mΩ (typ) at 100mA and VIN ≥ 8V - minimizes conduction loss and self-heating under full-load conditions. |
| Reverse Current Blocking | Activates at 30–70mV VOUT–VIN differential; blocks reverse flow within 0.9–2.0µs to protect upstream sources. |
| Thermal Shutdown | Triggers at 150°C junction temperature with 30°C hysteresis; device resumes normal operation once cooled below 120°C. |
Pinout & Package
MAX17563AUD+ is housed in a 14-pin TSSOP package (5mm × 6.5mm) with exposed pad (EP) that must be connected to GND for thermal and electrical integrity. Pin 1–3 are IN (common input node); Pins 12–14 are OUT (common output node); Pin 7 is GND; Pin 11 is open-drain FLAG; Pins 8 (HVEN) and 10 (EN) provide dual enable control; Pin 9 (RIEN) enables reverse-current blocking; Pins 4 (UVLO) and 5 (OVLO) support threshold programming; Pin 6 (SETI) sets current limit.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–3, IN | Input voltage node | Accepts –40V to +40V; requires 0.47µF ceramic bypass to GND for ESD and transient immunity. |
| 4, UVLO | Undervoltage lockout threshold select | Connect to GND for 19.2V (typ) internal threshold; use resistor divider for custom UVLO between 4.5V–24V. |
| 5, OVLO | Overvoltage lockout threshold select | Connect to GND for 33V (typ) internal threshold; use resistor divider for custom OVLO between 6V–36V. |
| 6, SETI | Current limit programming input | Resistor to GND sets 0.7A–4.2A limit; <1V input asserts FLAG and disables output. |
| 7, GND | Ground reference | Common return for all analog and power paths; EP must be soldered to same GND plane. |
| 8, HVEN | High-voltage enable input | 36V-tolerant active-low control; toggling resets fault state when latched or during autoretry. |
| 9, RIEN | Reverse-current enable | Pull to GND to activate reverse-blocking; leave floating or pull high to disable protection. |
| 10, EN | Active-high enable input | Standard logic-level enable; used with HVEN per Table 1 for flexible switch control. |
| 11, FLAG | Fault indicator output | Open-drain signal asserted low on overcurrent (after blanking), thermal shutdown, OVLO/UVLO, or SETI <1V. |
| 12–14, OUT | Protected output node | Delivers regulated power to load; requires 1µF ceramic bypass to GND near pin for stability. |
| EP | Exposed thermal pad | Must be connected to GND plane with ≥4 thermal vias; critical for θJA = 39°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Continuous current limiting | Maintains precise output current during sustained overloads - eliminates system reset cycles and supports uninterrupted operation in battery-powered equipment. |
| Reverse-current blocking | Sub-µs response (0.9–2.0µs) to 30–70mV VOUT–VIN differential - prevents backfeed into source during hot-swap or inductive load transients. |
| Dual enable inputs (EN/HVEN) | Independent logic-level (EN) and 36V-tolerant (HVEN) controls allow flexible sequencing and fault recovery in multi-rail systems. |
| Factory-preset OVLO/UVLO | 33V/19.2V thresholds eliminate need for external resistors in standard 24V industrial applications - reduces BOM count and layout complexity. |
| Extended temperature range | –40°C to +125°C operation with guaranteed RON, current limit, and timing specs - suitable for engine compartments and marine enclosures. |
Applications
| Industrial Power Supply Protection | Battery-Powered Equipment |
|---|---|
Use Scenario: Protecting PLC I/O modules against 48V DC supply surges and reverse polarity connection. IC Role / Device Role / Timing Role: Acts as primary front-end protector - monitors IN voltage continuously, blocks faults within microseconds, and sustains regulated output during brief overloads. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers; continuous limiting avoids system reboot during intermittent short circuits. | Use Scenario: Securing portable medical devices powered by Li-ion packs subject to accidental short-circuit during field use. IC Role / Device Role / Timing Role: Serves as intelligent current limiter - holds output at programmed 2.5A during cable short, asserts FLAG for MCU monitoring, and remains operational post-fault. Use Value: Enables safe, uninterrupted operation during user-handled faults; eliminates need for fuse replacement or manual reset. |
| Marine Navigation Systems | Consumer Audio Amplifiers |
Use Scenario: Guarding marine chartplotters against alternator-induced voltage spikes (up to 36V) and negative transients during battery jump-starts. IC Role / Device Role / Timing Role: Functions as bidirectional rail protector - clamps positive overvoltage, blocks negative input down to –36V, and suppresses reverse current from capacitive loads. Use Value: Ensures reliable startup and runtime in harsh 12V/24V marine environments where voltage instability is common. | Use Scenario: Isolating Class-D amplifier power stages from speaker wire shorts and ESD events during live performance setup. IC Role / Device Role / Timing Role: Provides fast-acting current limiting and reverse-current blocking - responds in <2µs to speaker short, limits peak fault current to 3.5A. Use Value: Preserves amplifier integrity without muting or shutdown; allows seamless recovery when short is removed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage and overcurrent protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17561AUD+ | Autoretry mode: turns off for 600ms after 20.7ms blanking; repeats until fault clears. | Suitable for systems where temporary power interruption is acceptable to reduce average fault power. | Select MAX17561AUD+ when thermal management prioritizes duty-cycle reduction over continuity. |
| TPS26631RGER | Fixed 36V OVLO, no UVLO adjustment; 0.9A–4.5A current limit; integrated charge pump for low RON. | Lacks reverse-current blocking and external UVLO/OVLO tuning; optimized for space-constrained USB PD designs. | Choose TPS26631RGER only if fixed thresholds and smaller 10-pin QFN package outweigh flexibility needs. |
Compared with MAX17561AUD+, the MAX17563AUD+ provides uninterrupted power delivery during faults, while TPS26631RGER trades adjustability for compactness and charge-pump efficiency - making MAX17563AUD+ optimal for mission-critical industrial and marine applications demanding both precision and continuity.
Availability
MAX17563AUD+ is available at Aetrix Electronics and suitable for industrial power supply protection, battery-powered equipment, marine navigation systems, and consumer audio amplifiers requiring stable component supply across extended temperature ranges and high-reliability fault handling.
Supply support for MAX17563AUD+ 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 high-performance analog and mixed-signal ICs for industrial, automotive, and communications applications.
The MAX1756x family was developed specifically for robust front-end power rail protection in harsh environments - delivering integrated overvoltage, undervoltage, overcurrent, reverse-current, and thermal protection in a single TSSOP package.
FAQ
What is the key functional difference between MAX17563AUD+ and MAX17561AUD+?
The MAX17563AUD+ implements continuous current limiting: when overcurrent occurs, it regulates output current at the SETI-programmed value without interrupting power. In contrast, the MAX17561AUD+ enters autoretry mode - turning off for 600ms after a 20.7ms blanking period, then attempting restart. This makes MAX17563AUD+ ideal for applications requiring uninterrupted operation during faults, whereas MAX17561AUD+ prioritizes thermal dissipation through duty cycling. Both share identical pinout, package, and protection thresholds.
How is the current limit set on the MAX17563AUD+?
The current limit on MAX17563AUD+ is set by connecting a resistor from the SETI pin to GND. Using the formula RSETI(kΩ) = 11500 / ILIM(mA), a 2.74kΩ resistor programs a 4.2A limit. The device achieves ±15% accuracy across temperature and supply voltage. Leaving SETI unconnected disables output (0A limit); pulling SETI below 1V (typ) asserts FLAG and forces shutdown. No capacitor should be added to SETI - maximum allowed capacitance is 10pF.
Does MAX17563AUD+ support reverse-voltage protection?
Yes, MAX17563AUD+ supports reverse-input voltage tolerance down to –36V on the IN pin and includes active reverse-current blocking. When VOUT exceeds VIN by 30–70mV, the device detects reverse flow and blocks it within 0.9–2.0µs. This feature is enabled by pulling the RIEN pin to GND. Reverse blocking prevents backfeed into upstream sources during hot-swap, inductive load decay, or battery backup scenarios - a critical capability not found in basic eFuses.
What thermal management provisions are required for MAX17563AUD+ in continuous fault conditions?
Under continuous overcurrent fault, MAX17563AUD+ dissipates power as P = VIN × ILIM × RON. With its 100mΩ (typ) FETs and θJA = 39°C/W, thermal vias from the exposed pad (EP) to a solid GND plane are mandatory. The device triggers thermal shutdown at 150°C junction temperature and resumes operation only after cooling to ~120°C. Unlike MAX17561/MAX17562, MAX17563AUD+ does not include blanking time for thermal events - shutdown activates immediately upon threshold breach.
Can MAX17563AUD+ be used without external resistors for OVLO and UVLO?
Yes, MAX17563AUD+ can operate without external resistors for OVLO and UVLO. Connecting OVLO and UVLO pins directly to GND activates the factory-preset thresholds of 33V (typ) and 19.2V (typ), respectively. These values are trimmed and guaranteed across temperature, eliminating BOM cost and layout area. External resistor dividers are optional and only needed when custom thresholds - such as 28V OVLO for 24V systems with margin, or 12V UVLO for brownout prevention - are required.
MAX17563AUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Overvoltage, Undervoltage Protection
- Current - Supply:
- 490µA
- Voltage - Supply:
- 4.5V ~ 36V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP-EP
MAX17563AUD+ FAQ
1.How can I place an order for MAX17563AUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17563AUD+ 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 MAX17563AUD+ reliable?
The price and inventory of MAX17563AUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17563AUD+ is usually 5 days.
3.What payment methods are accepted for MAX17563AUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17563AUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17563AUD+?
MAX17563AUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17563AUD+ 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 MAX17563AUD+?
For technical support, including MAX17563AUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17563AUD+ requirements.
6.How does Aetrix verify that MAX17563AUD+ is sourced from the original manufacturer or authorized distributors?
All MAX17563AUD+ 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 MAX17563AUD+ meets industry standards.
7.What is the process for return or replacement of MAX17563AUD+?
All MAX17563AUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17563AUD+, 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 MAX17563AUD+ part is unused and in its original packaging.
Return procedure for MAX17563AUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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