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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

NXP Semiconductors TDA3616T/N1,118

Name: TDA3616T/N1,118
Brand: NXP Semiconductors
SKU: TDA3616T/N1,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA3616T/N1,118

Manufacturer:: NXP Semiconductors

Category:: Power Management - Specialized

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: TDA3616T/N1,118.pdf

Description:: IC VOLT REG W/BATT DETECT 20SOIC

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Product details

Overview

TDA3616T/N1,118 from NXP Semiconductors (formerly Philips) is a multiple-output automotive voltage regulator IC with integrated battery detection, reset generation, and load dump protection. It delivers a stable 5.0 V ±2.5% output at up to 150 mA, operates across −18 V to +50 V supply range, features dual Schmitt-triggered reset outputs (RES1/RES2), and supports backup capacitor hold-up for microcontroller safe shutdown in car radio and infotainment systems.

For engineers reviewing the TDA3616T/N1,118 datasheet, TDA3616T/N1,118 pinout, TDA3616T/N1,118 application, or TDA3616T/N1,118 equivalent, key selection criteria include its −18 V reverse polarity tolerance, 50 V load dump immunity, adjustable reset delay via external capacitor, VP-state controlled startup behavior (on >7.5 V, off <2.4 V), and dual protected reset signaling for automotive microprocessor supervision.

Technical Context

The TDA3616T/N1,118 integrates a foldback-current-limited 5 V linear regulator, two independent reset outputs with hysteresis (RES1 rising threshold 7.5 V, RES2 tracking VREG within ±65 mV), and a dedicated battery detection circuit with 2.1 V rising threshold and 0.1 V hysteresis. All outputs remain functional during load dump transients up to 50 V/50 ms.

Its architecture includes an internal backup switch enabling capacitor-assisted operation during supply loss, a 47 kΩ internal timer resistor for reset delay timing, and ESD protection on all pins. The regulator uses a single bandgap reference shared with reset comparators to ensure voltage tracking between VREG and RES2 thresholds.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±2.5% - tightly regulated supply for automotive microcontrollers requiring stable logic-level biasing
Supply Range	−18 V to +50 V - supports reverse-battery connection and ISO 7637-2 load dump pulses without external clamping
Quiescent Current	95–125 µA standby - enables low-power battery monitoring in always-on vehicle modules
Reset Delay Timing	Adjustable via external capacitor (e.g., 2.6 ms with 100 nF) - provides programmable microcontroller initialization window after power-up
Drop-out Voltage	0.6 V typical at 150 mA - allows operation down to VP = 5.6 V, critical for cold-cranking scenarios
Thermal Resistance	R_th(j-p) = 20 K/W - requires heatsinking via pins 1/10/11/20 for >118 mA continuous output at 85 °C ambient
Operating Temperature	−40 °C to +105 °C - qualified for under-hood automotive environments per AEC-Q100 stress requirements

Pinout & Package

Package: SO20 (SOT163-1), plastic small outline, 20-pin, 7.5 mm body width, with integrated heat spreader via pins 1, 10, 11, and 20.

Pin/Terminal	Circuit Role	Design Meaning
VP (Pin 17)	Primary supply input	Withstands −18 V reverse polarity and 50 V load dump; powers regulator, reset logic, and battery detector
REG (Pin 16)	Regulated 5 V output	Delivers up to 150 mA with foldback current limiting; tracks within ±65 mV of internal reference
RES1 (Pin 15)	Primary reset output	Open-drain with 3.1 kΩ internal pull-up; asserts HIGH after fixed delay to initialize MCU on power-up
RES2 (Pin 14)	Secondary reset output	ONLY HIGH when REG is in spec (4.75–5.25 V); confirms regulator health before releasing MCU from reset
VI(bat) (Pin 4)	Battery sense input	Connects to battery via resistor divider; triggers VO(bat) HIGH when voltage exceeds 2.1 V (Schmitt hysteresis)
VO(bat) (Pin 5)	Battery status output	Buffered logic-level signal indicating battery presence/validity; drives early warning to MCU before supply collapse
VC (Pin 6)	Reset delay capacitor node	External capacitor sets RES1/RES2 assertion delay; internal 47 kΩ resistor forms RC timing network
GND (Pin 7)	Ground reference	Common return for regulator, reset buffers, and battery detector; connects to PCB ground plane
BU (Pin 18)	Backup switch control	Enables energy transfer from external backup capacitor to sustain REG and reset functions during VP interruption

Key Features

Feature	Design Value
Load dump protection	Rated for 50 V/50 ms pulses per ISO 7637-2; no external TVS required in most automotive designs
Dual reset architecture	RES1 initiates MCU boot; RES2 validates regulator stability - prevents premature release from reset
Battery detection with hysteresis	2.1 V rising / 2.0 V falling threshold ensures noise-immune battery presence detection in noisy vehicle electrical systems
Backup capacitor support	BU pin enables seamless transition to stored energy during VP dropout, allowing controlled MCU shutdown sequence
Reverse polarity safety	Operates down to −18 V without destructive reverse current - eliminates need for series diode in battery feed

Applications

Car Radio Power Management	Infotainment System Supervisor
Use Scenario: Power sequencing and brownout protection in OEM car stereo head units exposed to engine cranking and alternator load dump events. IC Role / Device Role / Timing Role: Primary 5 V regulator and system supervisor IC; generates synchronized reset signals and monitors battery integrity during ignition cycles. Use Value: Eliminates need for discrete reset ICs and TVS diodes, reducing BOM count while ensuring reliable MCU boot under harsh automotive transients.	Use Scenario: Safe power-down coordination in touchscreen-based navigation systems during unexpected battery disconnect or voltage sag. IC Role / Device Role / Timing Role: Backup-enabled voltage supervisor; holds regulator output using CBU during VP loss and asserts VO(bat) to trigger firmware save routines. Use Value: Prevents data corruption and flash memory wear by enabling deterministic shutdown before supply collapse - critical for map database integrity.
Body Control Module (BCM) Subsystem	Telematics Control Unit (TCU) Power Interface
Use Scenario: Low-quiescent-power regulation for CAN gateway logic in vehicle body electronics operating in sleep mode. IC Role / Device Role / Timing Role: Always-on 5 V supply with battery detection; I_q ≤125 µA enables extended parking-mode operation without excessive battery drain. Use Value: Extends vehicle standby time by minimizing parasitic load while maintaining wake-up capability via VI(bat) monitoring.	Use Scenario: Power management interface between vehicle battery and LTE/GNSS modem subsystem requiring clean, monitored 5 V rail. IC Role / Device Role / Timing Role: Regulator + reset generator + battery status buffer; RES2 validates VREG before enabling modem RF section. Use Value: Prevents RF transmission errors caused by marginal supply voltage - improves cellular handover reliability during low-battery conditions.

Car Radio Power Management

Infotainment System Supervisor

Use Scenario: Power sequencing and brownout protection in OEM car stereo head units exposed to engine cranking and alternator load dump events.

IC Role / Device Role / Timing Role: Primary 5 V regulator and system supervisor IC; generates synchronized reset signals and monitors battery integrity during ignition cycles.

Use Value: Eliminates need for discrete reset ICs and TVS diodes, reducing BOM count while ensuring reliable MCU boot under harsh automotive transients.

Use Scenario: Safe power-down coordination in touchscreen-based navigation systems during unexpected battery disconnect or voltage sag.

IC Role / Device Role / Timing Role: Backup-enabled voltage supervisor; holds regulator output using CBU during VP loss and asserts VO(bat) to trigger firmware save routines.

Use Value: Prevents data corruption and flash memory wear by enabling deterministic shutdown before supply collapse - critical for map database integrity.

Body Control Module (BCM) Subsystem

Telematics Control Unit (TCU) Power Interface

Use Scenario: Low-quiescent-power regulation for CAN gateway logic in vehicle body electronics operating in sleep mode.

IC Role / Device Role / Timing Role: Always-on 5 V supply with battery detection; I_q ≤125 µA enables extended parking-mode operation without excessive battery drain.

Use Value: Extends vehicle standby time by minimizing parasitic load while maintaining wake-up capability via VI(bat) monitoring.

Use Scenario: Power management interface between vehicle battery and LTE/GNSS modem subsystem requiring clean, monitored 5 V rail.

IC Role / Device Role / Timing Role: Regulator + reset generator + battery status buffer; RES2 validates VREG before enabling modem RF section.

Use Value: Prevents RF transmission errors caused by marginal supply voltage - improves cellular handover reliability during low-battery conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive voltage regulator and reset supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLF35584QVVS1	3.3 V/5 V dual output; integrated watchdog; SPI configuration; higher integration but larger QFN48 package	Requires microcontroller firmware interaction; suited for ASIL-B safety-critical clusters, not simple drop-in replacement	Select only if SPI configurability, watchdog, or dual-rail output is required; not pin-compatible with TDA3616T/N1,118
MAX6326–MAX6328	Single reset IC (no regulator); 1–5 V adjustable threshold; no load dump rating or battery detection	Lacks voltage regulation and automotive transient protection - must be paired with external LDO and TVS	Use only as supplemental reset monitor alongside a separate automotive-grade regulator; no functional overlap in core capabilities

Compared with TLF35584QVVS1 and MAX6326–MAX6328, the TDA3616T/N1,118 uniquely combines 5 V regulation, dual reset signaling, battery detection, and 50 V load dump immunity in a single SO20 package - making it optimal for cost-sensitive, non-safety-critical automotive subsystems where integration and transient robustness are prioritized over programmability or multi-rail flexibility.

Availability

TDA3616T/N1,118 is available at Aetrix Electronics and suitable for automotive infotainment, body control modules, telematics units, and car radio systems requiring stable component supply under harsh electrical conditions.

Supply support for TDA3616T/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 deep heritage in automotive analog and power management ICs.

The TDA3616T/N1,118 belongs to NXP's legacy automotive power management portfolio, designed specifically for robust, low-cost voltage regulation and system supervision in car audio and non-safety-critical electronic control units.

FAQ

What is the minimum supply voltage required to activate the regulator in TDA3616T/N1,118?

The TDA3616T/N1,118 regulator switches ON only when the VP supply voltage exceeds 7.5 V (typical rising threshold). Below this level, the regulator remains disabled regardless of load conditions. This VP-state control ensures clean startup after cold cranking and prevents erratic operation during low-voltage transients. The TDA3616T/N1,118 will shut down when VREG drops below 2.4 V, providing defined brownout behavior.

How does the battery detection circuit in TDA3616T/N1,118 function, and what voltage thresholds apply?

The TDA3616T/N1,118 battery detection circuit uses a Schmitt trigger on VI(bat) with a 2.1 V rising threshold and 2.0 V falling threshold (0.1 V hysteresis), ensuring noise-immune recognition of valid battery presence. When VI(bat) exceeds 2.1 V, VO(bat) goes HIGH to signal battery availability. This feature enables early warning to the microcontroller before supply collapse, and the TDA3616T/N1,118 maintains this output even during load dump events.

Can TDA3616T/N1,118 operate during automotive load dump events, and what protection does it provide?

Yes, the TDA3616T/N1,118 is explicitly rated for 50 V load dump pulses lasting up to 50 ms with rise time ≥2.5 ms, per ISO 7637-2. Its VP pin withstands these transients without external clamping, and all internal circuits-including the regulator, reset outputs, and battery detector-remain fully operational. This eliminates the need for external TVS diodes in many automotive designs, simplifying layout and improving reliability of the TDA3616T/N1,118-based power system.

What is the purpose of the BU (backup) pin on TDA3616T/N1,118, and how is it used?

The BU pin on TDA3616T/N1,118 controls an internal switch that transfers energy from an external backup capacitor (≥150 nF) to sustain the REG output and reset logic when VP drops to zero. During supply interruption, the TDA3616T/N1,118 uses stored charge to maintain regulated 5 V output long enough for the microcontroller to execute safe shutdown routines, preventing data corruption. The BU pin enables seamless transition without external MOSFETs or diodes.

Is TDA3616T/N1,118 compatible with reverse battery connections, and what is its limit?

Yes, the TDA3616T/N1,118 is reverse polarity safe down to −18 V on the VP pin without drawing high reverse current, eliminating the need for a series input diode in battery-fed applications. This protection is intrinsic to the IC's design and applies during both operating and non-operating states. The TDA3616T/N1,118 maintains functionality across its full −40 °C to +105 °C temperature range under reverse bias, making it suitable for automotive environments where battery terminal reversal may occur during service.

TDA3616T/N1,118 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Processor

Current - Supply:: 95µA

Voltage - Supply:: 5.6V ~ 25V

Operating Temperature:: -40°C ~ 105°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SO

TDA3616T/N1,118 FAQ

1.How can I place an order for TDA3616T/N1,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA3616T/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 TDA3616T/N1,118 reliable?

The price and inventory of TDA3616T/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 TDA3616T/N1,118 is usually 5 days.

3.What payment methods are accepted for TDA3616T/N1,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA3616T/N1,118 transactions.

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4.How is shipping managed for TDA3616T/N1,118?

TDA3616T/N1,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA3616T/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 TDA3616T/N1,118?

For technical support, including TDA3616T/N1,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA3616T/N1,118 requirements.

6.How does Aetrix verify that TDA3616T/N1,118 is sourced from the original manufacturer or authorized distributors?

All TDA3616T/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 TDA3616T/N1,118 meets industry standards.

7.What is the process for return or replacement of TDA3616T/N1,118?

All TDA3616T/N1,118 units undergo pre-shipment inspection (PSI). If there is an issue with TDA3616T/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 TDA3616T/N1,118 part is unused and in its original packaging.

Return procedure for TDA3616T/N1,118:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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