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NXP Semiconductors TDA3606T/N1,118
- Part No.:
- TDA3606T/N1,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TDA3606T/N1,118.pdf
- Description:
- IC VOLT REG W/BATT DETECT 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,092
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Product details
Overview
TDA3606T/N1,118 from NXP Semiconductors (formerly Philips) is a monolithic multiple-voltage regulator IC with integrated battery detection and dual reset outputs, designed for automotive microprocessor power management. It delivers a stable 5.0 V ±2% output at up to 50 mA, operates across −18 V to +50 V supply range, features load dump protection, and enables controlled microprocessor startup in car radio systems.
For engineers reviewing the TDA3606T/N1,118 datasheet, TDA3606T/N1,118 pinout, TDA3606T/N1,118 application, or TDA3606T/N1,118 equivalent, this page provides verified technical context, exact pin functions, real-world automotive use cases, and validated alternative options for robust system design under harsh electrical conditions.
Technical Context
The TDA3606T/N1,118 integrates a foldback-current-limited 5 V linear regulator, two Schmitt-trigger-based reset outputs (RES1 and RES2), and a dedicated battery voltage detection circuit with hysteresis. Its VP input withstands load dump pulses up to 50 V for 50 ms and reverse battery voltages down to −18 V without high reverse current.
Startup behavior is precisely defined: regulator enables when VP exceeds 7.5 V (typ.), disables when regulated output falls below 2.4 V (typ.), and both RES1/RES2 assert after an external RC delay. RES2 only goes HIGH when RES1 is HIGH and regulator output remains within 4.35–4.6 V window - ensuring valid power sequencing before microprocessor release.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% (4.8–5.2 V over load and temperature); ensures stable MCU core supply in automotive environments. |
| Supply Range | −18 V to +50 V; supports reverse-battery safety and ISO 7637-2 load dump immunity without external protection. |
| Quiescent Current | 95–120 µA (standby mode); enables low-power battery monitoring during vehicle ignition-off state. |
| Drop-out Voltage | ≤0.4 V at 50 mA; allows operation down to VP = 5.4 V, critical for cold-cranking scenarios. |
| Reset Thresholds | RES1 triggers after fixed RC delay; RES2 asserts only when VREG ≥4.35 V - prevents premature MCU release during brownout. |
| Ripple Rejection | 60 dB at 200 Hz; suppresses alternator noise and switching transients on the 5 V rail. |
| Thermal Resistance | 155 K/W (junction-to-ambient); defines maximum continuous output current as function of ambient temperature and PCB layout. |
Pinout & Package
Package: SO8 (SOT96-1), plastic small outline, 8-lead, 3.9 mm body width, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VI(bat) | Battery input voltage sense | Connects to vehicle battery via resistor divider; feeds Schmitt-trigger for low-battery detection (2.05 V typ. rising threshold). |
| 2 VO(bat) | Battery detection output | Open-collector logic-level output indicating battery status; pulled HIGH internally when VI(bat) >2.05 V. |
| 3 VC | Reset delay capacitor connection | External capacitor (e.g., 47 nF) sets reset timing; delay = Cd × Vthr / Ich ≈ 40–125 ms typical. |
| 4 GND | Ground reference | Common return for regulator, reset buffers, and battery detector; must be low-impedance for noise immunity. |
| 5 RES2 | Secondary reset output | Active-HIGH signal asserting only when VREG ≥4.35 V and RES1 is HIGH - confirms regulator stability before MCU release. |
| 6 RES1 | Primary reset output | Active-HIGH reset signal with internal 4.7 kΩ pull-up; initiates MCU initialization after power-on delay. |
| 7 REG | Regulated 5 V output | Delivers up to 50 mA (25 °C) with foldback current limiting; short-circuit safe to ground or VP. |
| 8 VP | Main supply input | Accepts −18 V to +50 V; includes built-in load dump protection and reverse-polarity safety without external components. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset outputs | RES1 provides timed power-on reset; RES2 adds voltage-valid confirmation - eliminates need for external supervisor IC. |
| Integrated battery detection | Schmitt-trigger input (VI(bat)) with 0.1 V hysteresis enables reliable low-battery warning without external comparators. |
| Load dump & reverse polarity protection | Withstands 50 V/50 ms transients and −18 V reverse battery - removes requirement for TVS diodes or polarity protection MOSFETs. |
| Foldback current limiting | Reduces power dissipation during short-circuit (Iscr = 15–60 mA); prevents thermal runaway and enables safe 0.5 Ω load shorts. |
| Defined start-up behavior | Regulator enables at VP >7.5 V and disables at VREG <2.4 V - guarantees clean, repeatable MCU boot sequence across temperature. |
Applications
| Car Radio Power Management | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Powering microcontroller and audio DSP in OEM car stereo units exposed to engine cranking and alternator ripple. IC Role / Device Role / Timing Role: Primary 5 V regulator with synchronized dual-reset signaling to ensure deterministic MCU boot after ignition-on and load dump recovery. Use Value: Eliminates external reset supervisor and TVS protection, reducing BOM count while maintaining ASIL-B compatible startup reliability. |
Use Scenario: Supplying logic and sensor interface circuits in door module ECUs operating across −40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: Regulator + battery monitor enabling wake-up on door handle touch while maintaining <120 µA quiescent current during sleep mode. Use Value: Enables always-on battery sensing with sub-100 µA standby draw - extends vehicle battery life during extended parking. |
| Aftermarket Head Unit | Instrument Cluster Subsystem |
Use Scenario: Providing regulated 5 V to display controller and CAN transceiver in plug-and-play infotainment systems. IC Role / Device Role / Timing Role: Dual-reset coordination ensures display firmware initializes only after stable 5 V is confirmed (RES2), preventing GUI corruption during voltage sag. Use Value: RES2's 4.35 V threshold guarantees display subsystem powers up only when regulator output is within spec - no software workaround needed. |
Use Scenario: Powering microcontroller and analog gauges in digital instrument clusters requiring fail-safe reset during battery voltage dips. IC Role / Device Role / Timing Role: Battery detection (VO(bat)) triggers early warning before main regulator shutdown, allowing graceful gauge fade-out and fault logging. Use Value: Built-in hysteresis (0.1 V) prevents flickering warnings during marginal battery conditions - improves driver experience and diagnostic accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage regulator with reset and battery detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL7705CP | Single reset output only; no battery detection; 5 V output tolerance ±3%; no load dump rating above 26 V. | Lacks RES2 validation and VI(bat) interface - requires external comparator for battery monitoring. | Choose TL7705CP only if dual-reset and battery sensing are unnecessary and supply transients remain below 26 V. |
| MAX6326US31D3+ | 3.08 V reset threshold; no regulator output; requires external 5 V supply; rated for 6 V max input. | Cannot replace TDA3606T/N1,118's integrated regulation - only suitable as standalone reset supervisor with separate LDO. | Select MAX6326US31D3+ only when using a discrete 5 V LDO and needing ultra-low quiescent current (1 µA) with precise 3.08 V reset. |
Compared with TL7705CP and MAX6326US31D3+, the TDA3606T/N1,118 uniquely combines 5 V regulation, dual sequenced resets, battery detection, and 50 V load dump protection in one SO8 package - eliminating four external components required by either alternative.
Availability
TDA3606T/N1,118 is available at Aetrix Electronics and suitable for automotive infotainment, body control modules, instrument clusters, and aftermarket head units requiring stable component supply under harsh electrical conditions.
Supply support for TDA3606T/N1,118 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
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with heritage from Philips Semiconductors.
The TDA3606T/N1,118 belongs to NXP's legacy automotive power management portfolio, engineered specifically for cost-sensitive, high-reliability 12 V vehicle subsystems where integration of regulation, reset, and battery monitoring reduces system complexity.
FAQ
What is the minimum supply voltage required for the TDA3606T/N1,118 regulator to turn on?
The TDA3606T/N1,118 regulator enables when the VP supply voltage exceeds 7.5 V (typical), with a guaranteed turn-on threshold between 6.2 V and 8.2 V. This ensures reliable startup during engine cranking where battery voltage may dip to 6–7 V, while preventing false triggering from noise or transients.
How does the TDA3606T/N1,118 provide load dump protection without external components?
The TDA3606T/N1,118 withstands 50 V load dump pulses for 50 ms (with rise time ≥2.5 ms) due to internal clamping and robust junction design. Its VP pin is rated for 50 V absolute maximum, and its foldback current limit prevents thermal damage during sustained overvoltage - eliminating need for external TVS diodes.
Can the TDA3606T/N1,118 operate with a reverse battery connection?
Yes - the TDA3606T/N1,118 is reverse-polarity safe down to −18 V on the VP pin without drawing high reverse current. This protects the device during incorrect battery installation in automotive service environments, meeting ISO 16750-2 requirements for reverse voltage exposure.
What is the purpose of the dual reset outputs (RES1 and RES2) in the TDA3606T/N1,118?
RES1 provides a timed power-on reset after VP stabilization; RES2 asserts only when the 5 V regulator output reaches ≥4.35 V - confirming valid voltage before releasing the microprocessor. This two-stage reset prevents MCU execution during brownout, a key reliability feature in automotive systems.
What external components are required for basic operation of the TDA3606T/N1,118?
Only three external components are mandatory: a 10 µF output capacitor on REG (pin 7), a timing capacitor (e.g., 47 nF) on VC (pin 3), and a resistor divider on VI(bat) (pin 1) for battery threshold setting. No input capacitor, TVS, or external reset IC is required - enabling minimal BOM implementation.
TDA3606T/N1,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Processor
- Current - Supply:
- 95µA
- Voltage - Supply:
- 5.6V ~ 25V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TDA3606T/N1,118 FAQ
1.How can I place an order for TDA3606T/N1,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA3606T/N1,118 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 TDA3606T/N1,118 reliable?
The price and inventory of TDA3606T/N1,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA3606T/N1,118 is usually 5 days.
3.What payment methods are accepted for TDA3606T/N1,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA3606T/N1,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA3606T/N1,118?
TDA3606T/N1,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA3606T/N1,118 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 TDA3606T/N1,118?
For technical support, including TDA3606T/N1,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA3606T/N1,118 requirements.
6.How does Aetrix verify that TDA3606T/N1,118 is sourced from the original manufacturer or authorized distributors?
All TDA3606T/N1,118 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 TDA3606T/N1,118 meets industry standards.
7.What is the process for return or replacement of TDA3606T/N1,118?
All TDA3606T/N1,118 units undergo pre-shipment inspection (PSI). If there is an issue with TDA3606T/N1,118, 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 TDA3606T/N1,118 part is unused and in its original packaging.
Return procedure for TDA3606T/N1,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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