MAX16126TCB+ Maxim Integrated Integrated Circuit (Quad Flat No-Lead) In Stock
MAX16126TCB+ is a Maxim load-dump and reverse-voltage protection controller with adjustable threshold in a 12-pin LFCSP. Shields automotive circuits from transient overvoltage and reverse-battery faults. From stock with worldwide shipping.
- Manufacturer
- Maxim Integrated
- Package
- Quad Flat No-Lead
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- MAX16126TCB+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable overvoltage threshold via external resistor divider enables protection tuning for 12 V, 24 V, or 48 V automotive supply rails
- Load-dump protection guards electronics against ISO 7637 automotive transient spikes exceeding 40 V on vehicle power lines
- Reverse-battery protection prevents damage from negative voltage conditions by controlling an external pass FET
- Compact 12-pin LFCSP 3×3 mm package minimizes board area in space-constrained automotive ECU and industrial designs
Applications
The MAX16126TCB+ is designed for automotive ECUs, telematics modules, and vehicle body electronics where load-dump transients and reverse-battery events on 12 V or 24 V rails can damage unprotected circuits. It controls an external power FET to rapidly disconnect the load when input voltage exceeds the adjustable threshold or reverses polarity, protecting downstream regulators, microcontrollers, and sensors from ISO 7637 automotive transients. The compact 12-pin LFCSP package supports high-density automotive PCB layouts in infotainment systems, ADAS modules, and industrial motor controllers.
Specifications
| Manufacturer Package Code | 12-LFCSP-3X3X0.75 |
| Date Of Intro | 2011-12-12 |
| YTEOL | 10 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | INPUT FAULT PROTECTION CONTROLLER |
| JESD-30 Code | S-XQCC-N12 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC12,.12SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | AEC-Q100 |
| Supply Voltage-Max (Vsup) | 30V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is an automotive load-dump transient and how does MAX16126TCB+ react to protect downstream ICs?
A load-dump transient occurs in 12 V or 24 V automotive systems when the battery disconnects during alternator charging, producing voltage spikes above 40 V that can destroy unprotected ICs. MAX16126TCB+ monitors the supply rail and drives an external FET to disconnect the load within microseconds, preventing overvoltage from reaching downstream electronics.
How does the adjustable threshold in MAX16126TCB+ let it serve both 12 V passenger cars and 24 V commercial truck systems?
MAX16126TCB+ uses an external resistor divider to set its overvoltage trip point, allowing designers to program cutoff thresholds for 12 V, 24 V, or 48 V automotive bus architectures without changing the IC. This makes one 12-pin LFCSP part applicable across passenger car, commercial truck, and mild-hybrid vehicle platform designs, reducing BOM complexity.
Does MAX16126TCB+ handle reverse-battery conditions, and what negative voltage level must the protection circuit withstand?
MAX16126TCB+ includes reverse-voltage protection by controlling an external MOSFET that blocks current flow when battery polarity is reversed, guarding downstream circuits from negative voltages that can reach -40 V in severe reverse-battery scenarios. The adjustable threshold window enables the IC to distinguish a genuine reverse-battery fault from minor negative-going transients on 12 V or 24 V vehicle supply rails.
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