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Infineon Technologies TLF1963TBATMA1
- Part No.:
- TLF1963TBATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TLF1963TBATMA1.pdf
- Description:
- IC REG LIN POS ADJ 1.5A TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,965
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Product details
Overview
TLF1963TBATMA1 from Infineon is an AEC-Q100-qualified adjustable low-dropout linear voltage regulator in PG-TO252-5 package, delivering up to 1.5 A output current with 340 mV dropout at full load, ±1.5% output voltage tolerance at light loads, and 40 µVRMS noise (10 Hz–100 kHz). It serves as a post-regulator in automotive power domains requiring stable, low-noise 1.21 V–(VI − 0.34 V) supplies.
For engineers reviewing the TLF1963TBATMA1 datasheet, TLF1963TBATMA1 pinout, TLF1963TBATMA1 application, or TLF1963TBATMA1 equivalent, this page provides verified functional context, validated pin definitions, confirmed thermal and electrical specs per Rev. 1.01 datasheet, and real-world automotive system integration guidance - not generic LDO summaries.
Technical Context
The TLF1963TBATMA1 implements an internal N-channel DMOS pass transistor with error amplifier, reference voltage (1.21 V), enable control, reverse polarity protection, overtemperature shutdown, and foldback current limiting. Its adjustable architecture uses external resistor dividers on the ADJ pin to set output voltage precisely between 1.21 V and (VI − Vdr).
It operates across 2.5 V–20 V input range with extended 1.7 V minimum startup capability, supports ceramic output capacitors ≥10 µF, and maintains stability under full temperature range (−40°C to +150°C) without requiring ESR-tuned capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | Up to 1.5 A continuous - supports high-current microcontroller cores or FPGA I/O banks. |
| Dropout voltage | 340 mV at 1.5 A - enables regulation from 3.3 V input to 2.96 V output with margin. |
| Output noise | 40 µVRMS (10 Hz–100 kHz) - suitable for noise-sensitive analog/RF supply rails. |
| Output voltage accuracy | ±1.5 % at small loads - ensures tight tolerance for precision logic or ADC reference domains. |
| Operating junction temp | −40°C to +150°C - qualified for under-hood automotive environments per AEC-Q100. |
| Enable threshold | EN pin active high - direct interface with 3.3 V or 5 V logic without level-shifting. |
| Input voltage range | 2.5 V to 20 V - compatible with 12 V automotive battery systems after pre-regulation. |
Pinout & Package
TLF1963TBATMA1 is housed in PG-TO252-5 (also known as TO-252-5 or DPAK-5), featuring an exposed thermal pad connected internally to GND for enhanced heat dissipation. The package supports surface-mount assembly and requires PCB copper area under the pad for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable control input | Active-high digital input; ties to VI if always-on operation required; enables fast power sequencing. |
| 2 (I) | Input voltage supply | Primary power entry; requires local 10 µF ceramic capacitor for line transient suppression. |
| 3 (GND) | Power ground reference | Common return path for input/output currents and internal bias; connects to thermal pad. |
| 4 (Q) | Regulated output | Delivers adjustable output; must connect ≥10 µF ceramic capacitor to GND for loop stability. |
| 5 (ADJ) | Feedback adjust node | Connects to resistor divider between Q and GND; sets VOUT = 1.21 V × (1 + R1/R2). |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage | 1.21 V to (VI − 0.34 V) - eliminates need for multiple fixed-output regulators in multi-rail systems. |
| Reverse polarity protection | Withstands −20 V on input - prevents damage during battery misconnection in automotive service. |
| Overtemperature shutdown | Activates at Tj > 150°C - protects against thermal runaway during sustained overload or poor heatsinking. |
| Ceramic capacitor compatibility | Stable with ≥10 µF, ≤3 Ω ESR - reduces BOM cost and board space vs. tantalum or aluminum electrolytics. |
| Low quiescent current | 1.0–1.7 mA (no load to 1 mA load) - minimizes standby power loss in always-on vehicle modules. |
Applications
| ADAS Camera Module Power | Infotainment SoC Core Rail |
|---|---|
Use Scenario: Powers image signal processor (ISP) and MIPI CSI-2 interface in 12 V-powered rear-view camera. IC Role / Device Role / Timing Role: Post-regulator supplying clean 1.8 V core voltage from a 3.3 V intermediate rail. Use Value: 40 µVRMS noise prevents pixel noise in raw sensor data; 150°C rating survives engine bay ambient. |
Use Scenario: Supplies configurable 1.1 V core voltage to ARM Cortex-A76 CPU cluster in head unit. IC Role / Device Role / Timing Role: Adjustable LDO providing precise, dynamically stable core voltage under variable load. Use Value: ±1.5% tolerance at light load ensures boot-time compliance; 1.5 A capacity handles burst-mode execution. |
| Body Control Module MCU | Automotive Gateway ECU |
Use Scenario: Regulates 3.3 V I/O rail for CAN/LIN transceivers and EEPROM in door module. IC Role / Device Role / Timing Role: Low-noise, fault-protected post-regulator downstream of buck converter. Use Value: Reverse polarity protection avoids field failure during battery replacement; EN pin enables sleep/wake sequencing. |
Use Scenario: Generates 2.5 V analog supply for Ethernet PHY and CAN FD controller in central gateway. IC Role / Device Role / Timing Role: High-reliability linear regulator for mixed-signal subsystems requiring low PSRR sensitivity. Use Value: 340 mV dropout preserves headroom when 5 V rail sags during cold-crank; AEC-Q100 qualification ensures long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE42754G | Fixed 5 V output; 400 mV dropout at 1.5 A; no ADJ pin; integrated watchdog timer. | Not adjustable - unsuitable where variable core voltage is required; better for simple 5 V peripheral rails. | Select only when fixed 5 V output and watchdog functionality are needed; not a drop-in replacement for TLF1963TBATMA1's adjustability. |
| TLF1963AETMA1 | Same architecture and pinout; tighter ±1.0% output tolerance at full load; identical thermal and noise specs. | Higher-precision variant - used where tighter regulation is mandated by SoC vendor spec (e.g., DDR memory termination). | Prefer for new designs demanding improved load regulation; backward-compatible but higher cost than TBATMA1. |
Compared with TLE42754G and TLF1963AETMA1, the TLF1963TBATMA1 uniquely balances adjustability, automotive qualification, and cost-efficiency - making it optimal for flexible multi-voltage systems where 1.21 V–3.3 V rails must be derived from a common intermediate supply.
Availability
TLF1963TBATMA1 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC power domains, and body control unit designs requiring stable component supply, AEC-Q100 compliance, and low-noise linear regulation.
Supply support for TLF1963TBATMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and automotive qualification infrastructure.
The OPTIREG™ linear product line delivers AEC-Q100-qualified voltage regulators optimized for automotive subsystems requiring high reliability, wide temperature operation, and robust fault protection - especially post-regulation in multi-rail ECUs.
FAQ
What is the minimum input voltage required for TLF1963TBATMA1 to regulate at 1.5 A?
The minimum input voltage is 2.1 V at 1.5 A load and 25°C junction temperature, per datasheet Table 5 (P_5.1.2). This accounts for the 340 mV dropout plus 1.21 V reference, enabling operation down to ~2.5 V input in real systems. Below 2.5 V, regulation is not guaranteed across temperature and load extremes.
Can TLF1963TBATMA1 be used with zero-ESR ceramic capacitors?
Yes - the regulator is explicitly designed for ceramic output capacitors ≥10 µF with ESR as low as 0 Ω, per datasheet Section 3.2 and Figure 5. Stability is maintained without requiring added series resistance, unlike older LDO architectures that demanded minimum ESR for phase margin.
How does the EN pin behave during power-up and brown-out conditions?
The EN pin has internal pull-down and hysteresis; it activates when voltage exceeds 1.2 V (typ.) and deactivates below 0.4 V (typ.), per functional description. This ensures clean, glitch-free enable/disable during slow-rising or noisy supply ramps - critical for deterministic power sequencing in automotive modules.
Is thermal pad connection mandatory for TLF1963TBATMA1?
Yes - the exposed thermal pad (TAB) is electrically connected to GND and thermally essential. Datasheet Section 6 specifies soldering the pad to ≥100 mm² of inner-layer copper for RthJA ≤ 50 K/W. Omitting pad connection risks exceeding 150°C junction temperature at >0.8 A continuous load, triggering thermal shutdown.
TLF1963TBATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 1.21V
- Voltage - Output (Max):
- 19.87V
- Voltage Dropout (Max):
- 0.13V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 1.5 mA
- Current - Supply (Max):
- 130 mA
- PSRR:
- 67dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO263-5-1
TLF1963TBATMA1 FAQ
1.How can I place an order for TLF1963TBATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLF1963TBATMA1 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 TLF1963TBATMA1 reliable?
The price and inventory of TLF1963TBATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF1963TBATMA1 is usually 5 days.
3.What payment methods are accepted for TLF1963TBATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF1963TBATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLF1963TBATMA1?
TLF1963TBATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLF1963TBATMA1 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 TLF1963TBATMA1?
For technical support, including TLF1963TBATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF1963TBATMA1 requirements.
6.How does Aetrix verify that TLF1963TBATMA1 is sourced from the original manufacturer or authorized distributors?
All TLF1963TBATMA1 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 TLF1963TBATMA1 meets industry standards.
7.What is the process for return or replacement of TLF1963TBATMA1?
All TLF1963TBATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLF1963TBATMA1, 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 TLF1963TBATMA1 part is unused and in its original packaging.
Return procedure for TLF1963TBATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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