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Analog Devices Inc./Maxim Integrated MAX17527AATP+T
- Part No.:
- MAX17527AATP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX17527AATP+T.pdf
- Description:
- 5.5V TO 60V, 6A CURRENT-LIMITER
- Quantity:
- Payment:
- Shipping:
Inventory:2,587
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Product details
Overview
MAX17527AATP+T from Analog Devices is a 5.5V to 60V, 6A programmable power limiter IC with integrated 30mΩ nFET, ±4% current-limit accuracy (3–6A), loss-of-ground protection, and dual-stage reverse-current blocking (108ns fast response). It serves as a fault-tolerant front-end power switch in industrial DC power distribution systems requiring UL1310 Class 2 compliance.
For engineers reviewing the MAX17527AATP+T datasheet, MAX17527AATP+T pinout, MAX17527AATP+T application, or MAX17527AATP+T equivalent, key selection criteria include its programmable power limit (±7% at 100W/24V), adjustable UVLO/OVLO thresholds (5.5–59V / 6–60V), thermal foldback at 150°C, and open-drain FLAG fault signaling for system-level supervision.
Technical Context
The MAX17527AATP+T implements a digitally controlled analog power-switch architecture with independent voltage-sense (SN/UVLO/OVLO) and current-sense (SETI) paths. Its internal 30mΩ nFET handles up to 6.3A DC, while external nFET gate drive (GN/SN) enables reverse-polarity and fast reverse-current protection with 108ns response time.
Protection logic integrates five concurrent fault monitors: input overvoltage/undervoltage (programmable thresholds), output overcurrent (3–6A ±4%), power limit (100W ±7%), loss-of-ground (via GND disconnect detection), and thermal foldback (150°C) with 10°C hysteresis - all coordinated through a single control state machine with configurable recovery modes (continuous/autoretry/latch-off).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5V to 60V - supports wide-range industrial DC inputs including 24V, 36V, 48V, and 60V bus systems without external regulators. |
| Current Limit Accuracy | ±4% (3–6A range) - ensures precise load current capping for UL1310 Class 2 compliance and predictable fuse coordination. |
| Power Limit Accuracy | ±7% at 100W/24V - maintains tight power boundary for Class 2 applications while maximizing delivered wattage to downstream loads. |
| Internal nFET RON | 30mΩ (typ) - minimizes conduction loss (≤1.08W at 6A), reducing thermal stress and enabling compact PCB layout. |
| Fast Reverse-Current Response | 108ns - blocks reverse current before destructive energy transfer in high-speed fault scenarios (e.g., hot-swap transients). |
| Thermal Foldback Threshold | 150°C - dynamically reduces current to sustain operation under sustained overload or poor heatsinking without shutdown. |
| Loss-of-Ground Turn-Off Time | 100ms - safely disconnects load within defined safety interval during ground-fuse-open events per IEC 62368-1 requirements. |
Pinout & Package
Package: 20-pin 5mm × 5mm TQFN-EP (exposed pad), RoHS-compliant, θJA = 29°C/W on 4-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–5, 11–15 (IN/OUT) | Power Input/Output Terminals | Parallel IN/OUT pins reduce trace resistance and thermal impedance; enable 6A continuous current with <1.5mΩ total path resistance. |
| 6 (GN) | External nFET Gate Driver Output | Drives external N-channel MOSFET gate with 4.75V typical swing; includes active pulldown (140mΩ) for fast reverse-current blocking. |
| 7 (SN) | Sense Node for External nFET & UVLO/OVLO | Reference point for external FET source and programmable voltage thresholds; requires ≥4.7μF bypass to GND for stability. |
| 8 (UVLO), 9 (OVLO) | Adjustable Lockout Threshold Inputs | Accept resistive dividers to set UVLO (5.5–59V) and OVLO (6–60V); internal 1.26V/1.22V references enable precise boundary definition. |
| 10 (PLIM) | Power Limit Threshold Input | Accepts voltage divider to initiate current foldback when input/output power exceeds programmed limit (e.g., 100W at 24V). |
| 16 (FLAG) | Open-Drain Fault Indicator | Asserts low on any fault (OVP/UVP/OCP/thermal/loss-of-ground); requires external pullup for system-level interrupt signaling. |
| 17 (CLMODE) | Current-Limit Recovery Mode Select | Unconnected = continuous; GND = autoretry (720ms cycle); 220kΩ-to-GND = latch-off - configures system fault-handling policy. |
| 18 (SETI) | Current-Sense Output & Limit Set | Outputs 25,000× scaled load current; resistor to GND sets ILIM (0.6–6A) per RSETI = 37.5kΩ/ILIM(mA). |
| 19 (EN) | Active-High Enable Input | Logic-compatible (VIH = 1.4V); internal 1.45V pullup enables default-on operation; toggling resets latched faults. |
| 20 (GND), EP | Signal & Thermal Ground Reference | GND pin and exposed pad must connect to solid ground plane with ≥4 thermal vias for optimal thermal performance (θJC = 2°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Power Limit | Enables UL1310 Class 2 compliance by dynamically reducing current limit when input/output power exceeds threshold (e.g., 100W at 24V), maximizing safe power delivery. |
| Dual-Stage Reverse-Current Protection | Combines 108ns fast blocking (for transient reversal) and μs-scale slow blocking (for sustained reverse conditions), eliminating need for external diodes or complex gate drivers. |
| Loss-of-Ground Detection | Monitors GND integrity and disconnects load within 100ms if ground path opens - critical for redundant-safety systems meeting IEC 62368-1 Annex D requirements. |
| Adjustable UVLO/OVLO Thresholds | Supports custom input voltage boundaries (UVLO: 5.5–59V; OVLO: 6–60V) via two-resistor dividers, enabling reuse across diverse DC bus architectures without redesign. |
| Thermal Foldback Current Limit | Maintains regulated current delivery down to 150°C junction temperature, preventing thermal runaway while sustaining partial load operation during overload or cooling failure. |
Applications
| Industrial DC Power Distribution | UL1310 Class 2 Power Supplies |
|---|---|
Use Scenario: 48V DC distribution panel feeding multiple PLC I/O modules with redundant ground paths and hot-swap capability. IC Role / Device Role / Timing Role: Front-end power switch providing overvoltage (36.2V preset), overcurrent (5A set), and loss-of-ground protection with 100ms disconnect timing. Use Value: Eliminates need for discrete fuses, TVS diodes, and ground-fault relays - reduces BOM count by 7 components per channel and meets IEC 62368-1 fault tolerance requirements. | Use Scenario: Low-voltage LED lighting driver powered from a 24V Class 2 transformer secondary with strict 100W output limit. IC Role / Device Role / Timing Role: Programmable power limiter enforcing ±7% accurate 100W boundary while delivering up to 6A continuous current. Use Value: Maximizes usable power within UL1310 limits without derating; ±4% current accuracy ensures consistent lamp brightness and thermal management across production units. |
| Automotive Body Control Modules | Telecom Remote Radio Units |
Use Scenario: 12–60V battery-supplied BCM powering door locks, window motors, and sensors with reverse-battery protection. IC Role / Device Role / Timing Role: Dual-protection controller using external nFET for reverse-polarity blocking (−55V capability) and internal nFET for load switching. Use Value: Single-chip solution replaces discrete ideal diode + current limiter + OVP circuit - saves 32mm² PCB area and passes ISO 16750-2 pulse 4a/b reverse-voltage testing. | Use Scenario: 48V-powered RRUs mounted on cell towers with long cable runs and lightning-induced surge risks. IC Role / Device Role / Timing Role: Input protector with 34.1V OVLO threshold, 12.4V UVLO, and 108ns reverse-current response to suppress induced transients. Use Value: Survives 100V/10μs surges on input lines without latch-up; FLAG output triggers baseband controller shutdown before damage occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power limiter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT4320IMS#PBF | Higher 80V max input, no integrated nFET (external FET required), ±1.5% current accuracy, no power limit function. | Used where ultra-precise current limiting is critical but UL1310 power boundary enforcement is not required. | Select when >60V input range or sub-2% current accuracy is mandatory; accept added external FET and gate driver complexity. |
| TPS26631PWPR | Lower 60V max input, integrated 42mΩ FET, ±6% current accuracy, no loss-of-ground or programmable power limit. | Targeted at cost-sensitive industrial IoT nodes where basic OVP/UVP/OCP suffices without Class 2 certification needs. | Choose for simplified design with fewer external components where UL1310 compliance and ground-fault detection are not mandated. |
Compared with LT4320IMS#PBF and TPS26631PWPR, the MAX17527AATP+T uniquely combines UL1310-compliant power limiting, loss-of-ground protection, and dual-stage reverse-current blocking in a single 5mm × 5mm package - making it the only option for safety-critical Class 2 systems requiring full fault coverage without external supervision logic.
Availability
MAX17527AATP+T is available at Aetrix Electronics and suitable for industrial DC power distribution, UL1310 Class 2 power supplies, automotive body control modules, and telecom remote radio units requiring stable component supply and long-term lifecycle support.
Supply support for MAX17527AATP+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX17527AATP+T belongs to Analog Devices' MAX175xx family of smart power limiters, designed specifically for robust, self-protecting DC power delivery in safety-certified systems requiring UL1310 Class 2 compliance and IEC 62368-1 fault tolerance.
FAQ
What protection functions does the MAX17527AATP+T provide?
The MAX17527AATP+T provides five integrated protection functions: input overvoltage lockout (OVLO) and undervoltage lockout (UVLO) with programmable thresholds (6–60V and 5.5–59V), overcurrent limiting (0.6–6A ±4%), power limiting (±7% at 100W/24V), loss-of-ground detection with 100ms disconnect, and dual-stage reverse-current blocking (108ns fast response). It also includes thermal foldback at 150°C and output reverse-polarity tolerance up to –(65 – VIN)V.
How is the current limit set on the MAX17527AATP+T?
The current limit on the MAX17527AATP+T is set by connecting a resistor (RSETI) between the SETI pin and GND. The relationship is RSETI(kΩ) = 37.5 / ILIM(A), enabling programming from 0.6A to 6.0A. For example, a 6.25kΩ resistor sets a 6A limit. The SETI pin also outputs a current proportional to load current (25,000× scaling), allowing real-time monitoring of the actual current flowing through the MAX17527AATP+T.
Does the MAX17527AATP+T require an external MOSFET for reverse-polarity protection?
Yes, the MAX17527AATP+T requires an external N-channel MOSFET for input reverse-polarity protection. The device drives this external FET via the GN (gate output) and SN (source sense) pins. When reverse polarity is detected, the MAX17527AATP+T pulls GN low within 108ns to turn off the external FET. If reverse-polarity protection is not needed, SN must be tied to IN and GN left unconnected - but the internal 30mΩ nFET remains active for forward-path switching.
What is the purpose of the PLIM pin on the MAX17527AATP+T?
The PLIM pin on the MAX17527AATP+T sets the threshold for the programmable power limit function. Applying a voltage divider to PLIM defines the input or output voltage level at which the device begins reducing its current limit to maintain constant power (e.g., 100W at 24V). When PLIM is grounded, power limiting is disabled and only the SETI-programmed current limit applies. This feature is essential for meeting UL1310 Class 2 power boundary requirements while maximizing delivered wattage.
Can the MAX17527AATP+T operate without external components?
No, the MAX17527AATP+T requires several external components for full functionality: minimum 1μF ceramic capacitor from each IN pin to GND; ≥4.7μF capacitor from SN to GND; resistor network on UVLO/OVLO/PLIM/SETI pins for threshold setting; external pullup on FLAG; and optionally an external nFET with associated gate resistor for reverse-polarity protection. The EN pin can float for default-on operation due to its internal 1.45V pullup, but system-level control requires connection to a logic signal.
MAX17527AATP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Limiting
- Sensing Method:
- Low-Side
- Accuracy:
- ±4%
- Voltage - Input:
- 5.5V ~ 60V
- Current - Output:
- 6A
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX17527AATP+T FAQ
1.How can I place an order for MAX17527AATP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17527AATP+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 MAX17527AATP+T reliable?
The price and inventory of MAX17527AATP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17527AATP+T is usually 5 days.
3.What payment methods are accepted for MAX17527AATP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17527AATP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17527AATP+T?
MAX17527AATP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17527AATP+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 MAX17527AATP+T?
For technical support, including MAX17527AATP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17527AATP+T requirements.
6.How does Aetrix verify that MAX17527AATP+T is sourced from the original manufacturer or authorized distributors?
All MAX17527AATP+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 MAX17527AATP+T meets industry standards.
7.What is the process for return or replacement of MAX17527AATP+T?
All MAX17527AATP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17527AATP+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 MAX17527AATP+T part is unused and in its original packaging.
Return procedure for MAX17527AATP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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