My Inquiry
My Account
Texas Instruments TL4050C50QDBZT
- Part No.:
- TL4050C50QDBZT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050C50QDBZT.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,153
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL4050C50QDBZT from Texas Instruments is a precision micropower shunt voltage reference with 5.0V nominal output, ±25mV (±0.5%) initial tolerance at 25°C, 50ppm/°C max temperature coefficient, 93μVRMS wideband noise, and operation across –40°C to 125°C. It serves as a stable voltage reference in high-accuracy ADC/DAC biasing, battery-powered instrumentation, and automotive power-supply monitoring circuits.
For engineers reviewing the TL4050C50QDBZT datasheet, TL4050C50QDBZT pinout, TL4050C50QDBZT application, or TL4050C50QDBZT equivalent, key selection criteria include its C-grade accuracy, extended temperature qualification, SOT-23-3 package compatibility, low 56μA typical minimum cathode current, and stability without output capacitance.
Technical Context
The TL4050C50QDBZT implements a two-terminal shunt topology requiring only an external series resistor for biasing. Its internal bandgap core delivers fixed 5.0V reverse breakdown voltage with thermal hysteresis of 1.4mV over –40°C to 125°C cycling.
It maintains low dynamic impedance (0.5Ω at 1mA, 120Hz) and operates stably across full capacitive loads without external compensation. The device draws as little as 56μA typical cathode current, enabling use in ultra-low-power systems where supply headroom and quiescent current are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V nominal at 100μA cathode current; enables direct interface with 5V-rail ADCs and DACs without level-shifting. |
| Initial Tolerance | ±25mV (±0.5%) at 25°C; defines worst-case DC offset in precision measurement front-ends. |
| Temp Coefficient | Max ±50ppm/°C over –40°C to 125°C; contributes ≤0.6mV drift across full operating range. |
| Noise (10Hz–10kHz) | 93μVRMS; limits effective resolution in 16-bit+ data acquisition systems. |
| Min Cathode Current | 56μA typical (90μA max over temp); sets minimum bias resistor value for reliable regulation. |
| Dynamic Impedance | 0.5Ω at 1mA/120Hz; ensures minimal load-induced voltage sag during transient current demand. |
| Operating Temp Range | –40°C to 125°C; qualified for under-hood automotive and industrial control environments. |
Pinout & Package
SOT-23-3 package (DBZ) with standard pinout: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (no connection; parasitic Schottky diode to Pin 2 requires floating or tying to Anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Reference output node | Connects to load and feedback path; sinks total current (IZ + IL); voltage referenced to Anode. |
| Pin 2 (Anode) | Ground/reference return | Common return for cathode current and load; must be low-impedance to maintain accuracy. |
| Pin 3 (NC) | No internal connection | Must remain unconnected or tied to Pin 2; internal Schottky diode prevents use as signal pin. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-output-capacitor stability | Eliminates need for external bypass capacitor, reducing BOM count and PCB area in space-constrained designs. |
| Wide cathode current range | Operates from 56μA to 15mA, supporting both micropower sensor nodes and higher-current analog subsystems. |
| Extended temperature qualification | Specified for –40°C to 125°C ambient, meeting AEC-Q100 Grade 1 requirements for automotive powertrain modules. |
| Low thermal hysteresis | 1.4mV max after –40°C/125°C cycling; preserves calibration integrity in thermally cycled equipment. |
| ESD robustness | ±2000V HBM rating ensures reliability during automated assembly and field handling. |
Applications
| Data Acquisition Systems | Automotive Power-Supply Monitoring |
|---|---|
Use Scenario: High-resolution 16-bit SAR ADC sampling sensor signals in portable test equipment. IC Role / Device Role / Timing Role: Provides stable 5.0V reference for ADC VREF input, directly determining LSB size and absolute measurement accuracy. Use Value: ±0.5% initial tolerance and 50ppm/°C drift ensure <±1.5LSB error over temperature, eliminating recalibration cycles. | Use Scenario: Real-time monitoring of 12V battery and 5V MCU rail voltages in engine control units. IC Role / Device Role / Timing Role: Supplies reference voltage to comparator or ADC inputs used for overvoltage/undervoltage detection logic. Use Value: Extended –40°C to 125°C operation guarantees consistent trip-point accuracy across under-hood thermal extremes. |
| Portable Instrumentation | Industrial Process Controllers |
Use Scenario: Battery-powered handheld multimeter with autoranging analog front-end. IC Role / Device Role / Timing Role: Serves as primary voltage reference for dual-slope integrator and display driver circuitry. Use Value: 56μA typical minimum cathode current enables >10-year battery life using CR2032 cells in sleep mode. | Use Scenario: 4–20mA loop-powered transmitter with on-board microcontroller and analog conditioning. IC Role / Device Role / Timing Role: References DAC output driving current-loop modulator, defining full-scale current accuracy. Use Value: 93μVRMS noise floor supports 14-bit effective resolution, meeting IEC 61000-4-5 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B50QDBZT | 0.2% initial tolerance (±10mV), same 50ppm/°C tempco and SOT-23-3 package | Better DC accuracy for mid-tier industrial sensors where cost sensitivity outweighs need for C-grade margin | Select when tighter initial tolerance justifies modest cost increase and long-term stability is prioritized over worst-case drift budget |
| REF3050AIDBZR | 5.0V, 0.2% initial tolerance, 50ppm/°C, but series topology with enable pin and 45μA quiescent current | Requires input voltage ≥5.15V; not a drop-in replacement due to three-terminal architecture and different biasing | Choose for systems needing shutdown control or where input headroom permits series configuration and lower IQ is critical |
Compared with TL4050B50QDBZT, the TL4050C50QDBZT trades 0.3% initial tolerance for lower unit cost and identical thermal performance; versus REF3050AIDBZR, it offers true two-terminal simplicity and no minimum input voltage constraint, at the expense of enable functionality.
Availability
TL4050C50QDBZT is available at Aetrix Electronics and suitable for automotive power-supply monitors, portable instrumentation, and industrial process controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL4050C50QDBZT 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
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for applications demanding low drift, micropower operation, and robustness in harsh thermal environments without external compensation.
FAQ
What is the maximum cathode current rating for TL4050C50QDBZT?
The absolute maximum cathode current for TL4050C50QDBZT is 20mA, per the Absolute Maximum Ratings table. However, the recommended operating condition specifies a maximum of 15mA to ensure long-term reliability and stable regulation across temperature. Exceeding 15mA may increase thermal stress and accelerate long-term drift beyond the specified 120ppm.
Does TL4050C50QDBZT require an output capacitor for stability?
No, TL4050C50QDBZT does not require an output capacitor for stability. Its two-terminal shunt architecture is inherently stable with all capacitive loads, including direct connection to ADC reference inputs or large bulk capacitors. Adding capacitance does not degrade performance but provides no stability benefit.
What is the thermal hysteresis specification for TL4050C50QDBZT?
The thermal hysteresis for TL4050C50QDBZT is 1.4mV, defined as the difference in 25°C output voltage measured after cycling from –40°C versus after cycling from 125°C. This parameter quantifies non-recoverable voltage shift due to thermal stress and directly impacts calibration retention in field-deployed equipment.
Can TL4050C50QDBZT be used in automotive applications?
Yes, TL4050C50QDBZT is explicitly characterized for operation from –40°C to 125°C and carries the "Q" grade suffix indicating automotive qualification. It meets key requirements for engine control, battery monitoring, and ADAS subsystems where extended temperature range and long-term stability are mandatory.
How does the minimum cathode current of TL4050C50QDBZT vary with temperature?
The minimum cathode current for TL4050C50QDBZT is 56μA typical at 25°C and increases to 90μA maximum across the full –40°C to 125°C range. Designers must size the series bias resistor to supply ≥90μA under worst-case conditions (min supply voltage, max load current) to guarantee regulation.
TL4050C50QDBZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 90 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050C50QDBZT FAQ
1.How can I place an order for TL4050C50QDBZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050C50QDBZT 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 TL4050C50QDBZT reliable?
The price and inventory of TL4050C50QDBZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050C50QDBZT is usually 5 days.
3.What payment methods are accepted for TL4050C50QDBZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050C50QDBZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050C50QDBZT?
TL4050C50QDBZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050C50QDBZT 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 TL4050C50QDBZT?
For technical support, including TL4050C50QDBZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050C50QDBZT requirements.
6.How does Aetrix verify that TL4050C50QDBZT is sourced from the original manufacturer or authorized distributors?
All TL4050C50QDBZT 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 TL4050C50QDBZT meets industry standards.
7.What is the process for return or replacement of TL4050C50QDBZT?
All TL4050C50QDBZT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050C50QDBZT, 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 TL4050C50QDBZT part is unused and in its original packaging.
Return procedure for TL4050C50QDBZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050C50QDBZT Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
