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Analog Devices Inc./Maxim Integrated MAX17608ATC+T
- Part No.:
- MAX17608ATC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX17608ATC+T.pdf
- Description:
- IC CURRENT LIMITING 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,401
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Product details
Overview
MAX17608ATC+T from Maxim Integrated is a 4.5V–60V adjustable overvoltage/undervoltage/reverse-current protection IC with integrated 260mΩ (typ) dual-FET switch, programmable 0.1A–1A current limiting, and -40°C to +125°C operation - used in industrial sensor power rails to prevent damage from input faults up to +60V and -65V.
For engineers reviewing the MAX17608ATC+T datasheet, MAX17608ATC+T pinout, MAX17608ATC+T application, or MAX17608ATC+T equivalent, this page delivers verified functional identity, validated thermal shutdown behavior, confirmed reverse-blocking capability, and real-world current-limit mode selection guidance for PLC and battery-operated instrumentation designs.
Technical Context
The MAX17608ATC+T implements dual-NMOS FETs in series with 260mΩ typical on-resistance and supports three programmable overcurrent response modes (Autoretry, Continuous, Latch-off) via the CLMODE pin. It features independent external resistor programming of OVLO (5.5V–60V) and UVLO (4.5V–59V), plus an internal 4V (typ) UVLO threshold.
Reverse current blocking is enabled with fast (105mV threshold, 230ns response) and slow (11mV threshold, 140μs debounce) detection paths; FLAG asserts on reverse current, thermal shutdown, or overcurrent exceeding blanking time (40ms typ). SETI provides current-sense voltage (1.5V at 1A) with ±3% accuracy across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +4.5V to +60V operating; withstands -65V reverse input - enables robust front-end protection in unregulated industrial supplies. |
| Current Limit Range | 0.1A to 1.0A programmable via SETI-to-GND resistor - supports precise inrush control for 100μF–4700μF output capacitance. |
| RON (typ) | 260mΩ at ILOAD = 100mA, VIN ≥ 8V - limits conduction loss to <120mW at 500mA, reducing thermal stress. |
| OVLO/UVLO Adjustment | 5.5V–60V OVLO and 4.5V–59V UVLO via external resistive dividers - allows system-specific fault thresholds without redesign. |
| Reverse Blocking | Blocks OUT→IN current with 105mV fast threshold (230ns response) and 11mV slow threshold (140μs debounce) - suppresses noise-induced false trips while reacting instantly to hard shorts. |
| Operating Temp | -40°C to +125°C junction range - qualified for use in factory-floor sensors, weighing systems, and network-control modules. |
| Package | 12-pin TDFN-EP (3mm × 3mm, TD1233+1C) with exposed pad - enables high-power density layout with low θJA = 41°C/W on 4-layer board. |
Pinout & Package
MAX17608ATC+T is housed in a 12-pin, 3mm × 3mm TDFN-EP package (Outline 21-0664, Land Pattern 90-0397) with exposed thermal pad (EP) requiring connection to GND plane via multiple vias for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–2, IN | High-voltage input supply node | Accepts +4.5V to +60V DC; withstands -65V reverse bias; requires local 0.47μF ceramic decoupling to GND. |
| 3, OVLO | Overvoltage lockout threshold adjust | Connects to resistive divider from IN to GND; sets OVLO using 1.5V internal reference (5.5V–60V range). |
| 4, UVLO | Undervoltage lockout threshold adjust | Connects to resistive divider from IN to GND; sets UVLO using 1.5V internal reference (4.5V–59V range). |
| 5, EN | Active-high enable control | Internally pulled up to 1.8V; drives high (>1.4V) to enable FETs; pulls low (<0.4V) to disable with <2μA shutdown current. |
| 6, CLMODE | Current-limit fault response selector | Unconnected = Autoretry; GND = Continuous; 150kΩ to GND = Latch-off - configures recovery behavior after overcurrent. |
| 7, GND | Power and signal reference ground | Primary return path for all internal circuits; must be low-impedance connection to system GND plane. |
| 8, SETI | Current limit set & sense output | Resistor to GND programs ILIM (0.1A–1A); voltage at pin = IIN × RSETI; clamped at 1.6V max; read by external ADC. |
| 9, FLAG | Open-drain fault indicator | Asserts low on overcurrent (after 40ms blanking), reverse current detection, thermal shutdown, or RSETI < 1kΩ. |
| 10, UVOV | Open-drain UV/OV fault indicator | Asserts low when VIN falls below UVLO or rises above OVLO - enables independent monitoring of input rail integrity. |
| 11–12, OUT | Protected output supply node | Delivers regulated power to load; supports long cables/inductive loads; reverse-blocking prevents backfeed into source. |
| EP | Exposed thermal pad | Must be soldered to large GND copper area with ≥4 thermal vias - reduces θJC to 8.5°C/W and sustains 1.1A continuous current. |
Key Features
| Feature | Design Value |
|---|---|
| Triple fault protection | Simultaneous OVLO (5.5V–60V), UVLO (4.5V–59V), and reverse-current blocking - eliminates need for discrete TVS, Zener, and back-to-back MOSFETs. |
| Programmable current-limit accuracy | ±3% over 0.2A–1.0A full temperature range - ensures predictable inrush control and short-circuit energy limiting in PLC I/O modules. |
| Autoretry mode power reduction | 6.25% duty cycle (40ms blanking / 640ms total cycle) cuts average output current by 93.75% during sustained overload - extends survival time in field-deployed sensors. |
| Dual-threshold reverse protection | 105mV fast threshold (230ns response) + 11mV slow threshold (140μs debounce) - rejects EMI while reacting instantly to hot-plug faults at OUT pins. |
| Integrated current sensing | SETI pin outputs voltage proportional to instantaneous input current (1.5V at 1A) with 1000:1 mirror ratio - enables real-time load monitoring without shunt resistor. |
Applications
| Sensor Power Protection | PLC Input Module Protection |
|---|---|
|
Use Scenario: Protecting 24V-powered analog sensor transmitters in harsh factory environments subject to wiring faults and ESD. IC Role / Device Role / Timing Role: Front-end protection IC that blocks +60V surges, -65V reversals, and reverse current from damaged downstream circuitry. Use Value: Prevents catastrophic failure of precision op-amps and ADCs during cable disconnects or accidental grounding of sensor outputs. |
Use Scenario: Securing individual 24V input channels in modular PLC backplanes against cross-channel faults and field-wiring errors. IC Role / Device Role / Timing Role: Channel-isolated protection device with programmable UV/OV thresholds and latch-off mode for maintenance-safe fault containment. Use Value: Enables hot-swap capability and prevents single-point failures from propagating across I/O slots during field servicing. |
| Weighing System Power Rail | Battery-Operated Instrumentation |
|
Use Scenario: Supplying stable 12V/24V to strain-gauge bridges and low-noise instrumentation amplifiers in industrial scales. IC Role / Device Role / Timing Role: Low-RON (260mΩ) protection switch with thermal shutdown and reverse-blocking - maintains rail integrity during load cell cable flexing. Use Value: Eliminates offset drift caused by leakage currents during intermittent reverse-bias events from mechanical vibration. |
Use Scenario: Power management for portable gas detectors and handheld process calibrators operating from Li-ion or 4xAA packs. IC Role / Device Role / Timing Role: Overvoltage clamp and current limiter that tolerates charger voltage spikes up to 60V while enabling soft-start into large capacitive loads. Use Value: Extends battery life via autoretry mode's 93.75% average current reduction during sensor self-test short-circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage/overcurrent protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17609ATC+T | Lacks reverse-current blocking; shares same OVLO/UVLO adjustment, current-limit range, and package. | Suitable where bidirectional current flow is required (e.g., inductive solenoid drivers), but cannot replace MAX17608ATC+T in reverse-blocking-critical roles. | Select MAX17609ATC+T only if reverse conduction is explicitly needed and UV/OV/current-limit specs match system requirements. |
| TPS26631RGER | Fixed 60V OVLO, no UVLO adjustment, 0.6A fixed current limit, 2.5mΩ RON, no reverse blocking - higher efficiency but less flexible. | Better for cost-sensitive, high-current (≤0.6A), fixed-threshold applications like PoE-powered edge nodes where reverse flow is irrelevant. | Choose TPS26631RGER when design prioritizes ultra-low RON and simplified BOM over programmability and reverse protection. |
Compared with MAX17609ATC+T and TPS26631RGER, MAX17608ATC+T uniquely combines adjustable UV/OV thresholds, programmable 0.1A–1A current limiting, and dual-mode reverse-current blocking in a 3mm × 3mm footprint - making it the only option for space-constrained, field-repairable industrial sensors requiring full fault coverage.
Availability
MAX17608ATC+T is available at Aetrix Electronics and suitable for industrial sensor systems, PLC input modules, weighing equipment, and battery-operated instrumentation requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for MAX17608ATC+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 high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets, with emphasis on reliability and integration.
The MAX17608ATC+T belongs to the Olympus series of system protection ICs, engineered specifically for ruggedized front-end power conditioning in factory automation, process instrumentation, and condition-monitoring equipment.
FAQ
What protection functions does the MAX17608ATC+T provide?
The MAX17608ATC+T provides adjustable overvoltage lockout (5.5V–60V), adjustable undervoltage lockout (4.5V–59V), reverse-current blocking (with 105mV fast and 11mV slow thresholds), programmable 0.1A–1A current limiting, and thermal shutdown. It also features internal 4V UVLO and withstands -65V reverse input - all integrated into a single 12-pin TDFN-EP package.
How is current limiting configured on the MAX17608ATC+T?
Current limiting on the MAX17608ATC+T is set by connecting a resistor (RSETI) between the SETI pin and GND. Using RSETI = 1.5kΩ yields 1.0A limit; 3kΩ gives 0.5A; 5kΩ gives 0.3A. Accuracy is ±3% for 0.2A–1.0A across -40°C to +125°C. The SETI pin also outputs a voltage proportional to instantaneous current for ADC monitoring.
Does the MAX17608ATC+T support reverse current blocking, and how does it work?
Yes, the MAX17608ATC+T blocks reverse current (OUT → IN) using two independent detection paths: a fast path (105mV threshold, 230ns response) for hard shorts and a slow path (11mV threshold, 140μs debounce) to reject noise. When triggered, only the input NMOS (Q1) turns off while Q2 remains on - minimizing voltage drop and enabling rapid recovery after fault removal.
What are the differences between Autoretry, Continuous, and Latch-off modes on the MAX17608ATC+T?
Autoretry mode (CLMODE unconnected) cycles OFF for 600ms after 40ms overcurrent blanking, then retries - ideal for transient faults. Continuous mode (CLMODE = GND) holds current at the limit indefinitely - best for controlled current sources. Latch-off mode (CLMODE = 150kΩ to GND) disables until EN toggled or VIN cycled - suited for safety-critical shutdowns. All modes use the same SETI resistor.
Can the MAX17608ATC+T be used in -40°C to +125°C industrial applications?
Yes, the MAX17608ATC+T is fully specified and production-tested over -40°C to +125°C ambient temperature, with junction temperature rated to +150°C. Its thermal shutdown activates at +160°C with 28°C hysteresis, and the 3mm × 3mm TDFN-EP package achieves 41°C/W θJA on standard 4-layer boards - making it suitable for enclosure-mounted PLC modules and outdoor process transmitters.
MAX17608ATC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Limiting
- Sensing Method:
- -
- Accuracy:
- -
- Voltage - Input:
- 4.5V ~ 60V
- Current - Output:
- 1A
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX17608ATC+T FAQ
1.How can I place an order for MAX17608ATC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17608ATC+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 MAX17608ATC+T reliable?
The price and inventory of MAX17608ATC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17608ATC+T is usually 5 days.
3.What payment methods are accepted for MAX17608ATC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17608ATC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17608ATC+T?
MAX17608ATC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17608ATC+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 MAX17608ATC+T?
For technical support, including MAX17608ATC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17608ATC+T requirements.
6.How does Aetrix verify that MAX17608ATC+T is sourced from the original manufacturer or authorized distributors?
All MAX17608ATC+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 MAX17608ATC+T meets industry standards.
7.What is the process for return or replacement of MAX17608ATC+T?
All MAX17608ATC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17608ATC+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 MAX17608ATC+T part is unused and in its original packaging.
Return procedure for MAX17608ATC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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