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Texas Instruments LM4128DQ1MF3.0/NOPB
- Part No.:
- LM4128DQ1MF3.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4128DQ1MF3.0/NOPB.pdf
- Description:
- IC VREF SERIES 1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
LM4128DQ1MF3.0/NOPB from Texas Instruments is a precision micropower series voltage reference in 5-pin SOT-23 (DBV) package, delivering 3.0 V output with ±0.1% initial accuracy (A-grade), 75 ppm/°C max temperature coefficient, and 60 µA supply current. It operates from VIN = VREF + 400 mV to 5.5 V and supports up to 20 mA load current, making it suitable for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4128DQ1MF3.0/NOPB datasheet, LM4128DQ1MF3.0/NOPB pinout, LM4128DQ1MF3.0/NOPB application, or LM4128DQ1MF3.0/NOPB equivalent, key selection considerations include its enable-controlled shutdown (3 µA IQ), dropout voltage ≤400 mV at 10 mA, stability with up to 10 µF capacitive loads, and AEC-Q100 Grade 1 qualification for automotive use.
Technical Context
The LM4128DQ1MF3.0/NOPB uses an internal band-gap–derived reference architecture with active error correction, enabling stable 3.0 V output across −40°C to +125°C junction temperature. Its enable pin controls a low-leakage pass element, allowing fast transition between 60 µA active mode and 3–7 µA shutdown mode without external circuitry.
It requires only a minimum 0.1 µF input ceramic capacitor (CIN ≥ COUT), eliminates need for output stabilization capacitor, and maintains regulation under load transients up to 20 mA with <120 ppm/mA load regulation. The device features indefinite short-circuit protection (75 mA limit) and thermal hysteresis of 75 ppm over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal, ±0.1% initial accuracy (A-grade) - ensures ≤3 mV absolute error at 25°C for 12-bit+ system calibration. |
| Temperature Coefficient | 75 ppm/°C max - limits drift to ≤0.225 mV over −40°C to +125°C span, critical for wide-temp industrial sensors. |
| Supply Current | 60 µA typical - enables >1-year battery life in coin-cell–powered data loggers drawing <10 µA average. |
| Shutdown Current | 3–7 µA with EN = 0 V - allows ultra-low-power sleep modes in duty-cycled measurement systems. |
| Dropout Voltage | ≤400 mV at 10 mA load - supports operation from 3.4 V supply, compatible with single Li-ion or 3×AA configurations. |
| Output Noise | 285 µVPP (0.1–10 Hz) - meets noise floor requirements for 16-bit SAR ADC reference inputs. |
| Load Regulation | 25–120 ppm/mA - maintains ≤0.36 mV output shift from no-load to full 20 mA, sufficient for precision current sources. |
Pinout & Package
LM4128DQ1MF3.0/NOPB is housed in a 5-pin SOT-23 (DBV) package (2.9 mm × 1.6 mm × 1.15 mm), RoHS-compliant, with moisture sensitivity level (MSL) 1 and peak reflow rating of 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected and floating; not internally bonded - PCB trace must be omitted or isolated. |
| 2 - GND | Analog ground reference | Low-impedance return path for reference core; requires dedicated ground plane connection to minimize noise coupling. |
| 3 - EN | Active-high enable control | Drives internal pass transistor; VIH ≥65% VIN, VIL ≤35% VIN - compatible with 1.8 V, 3.3 V, and 5 V logic interfaces. |
| 4 - VIN | Input supply rail | Accepts 3.4 V to 5.5 V (VREF + 400 mV min); internal LDO structure rejects supply ripple up to 60 dB @ 1 kHz. |
| 5 - VREF | Precision 3.0 V output | Low-impedance buffered reference node; stable with 0–10 µF capacitive loads; supports force-sense configurations. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive applications operating from −40°C to +125°C junction temperature with zero early-life failure. |
| Enable-controlled shutdown | Reduces quiescent current to ≤7 µA while preserving output regulation state - enables rapid wake-up (<100 µs) in sensor nodes. |
| No external stabilization capacitor required | Internally compensated for stability with 0–10 µF output capacitance - eliminates BOM cost and layout area for COUT. |
| Stable with low-ESR ceramic capacitors | Compatible with X5R/X7R dielectrics down to 0.1 µF CIN - avoids tantalum or electrolytic parts in space-constrained designs. |
| Indefinite short-circuit protection | Limits output current to 75 mA during fault - prevents thermal runaway and enables safe operation in unattended battery systems. |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered handheld multimeter acquiring 16-bit ADC samples at 1 kSPS. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC and analog front-end gain stages. Use Value: 285 µVPP low-frequency noise and 75 ppm/°C tempco ensure ≤0.01% measurement accuracy across 0–40°C ambient range. |
Use Scenario: Tire pressure monitoring system (TPMS) ECU measuring piezoresistive bridge output. IC Role / Device Role / Timing Role: Precision excitation reference for Wheatstone bridge and ADC reference input. Use Value: AEC-Q100 Grade 1 qualification and −40°C to +125°C operation guarantee reliability in under-hood environments. |
| Industrial Process Controller | Medical Patient Monitor Analog Front End |
|
Use Scenario: Loop-powered 4–20 mA transmitter with HART modulation requiring stable 3.0 V bias. IC Role / Device Role / Timing Role: Reference source for DAC output stage and current-sense amplifier offset calibration. Use Value: 60 µA supply current and 400 mV dropout enable operation from 3.4 V loop supply while maintaining 0.1% accuracy. |
Use Scenario: Portable ECG module digitizing biopotential signals with 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Low-noise reference for ADC and programmable gain amplifier (PGA) bias network. Use Value: 285 µVPP 0.1–10 Hz noise and 50 ppm long-term stability over 1000 hrs support clinical-grade signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBZR | 3.0 V, ±0.2% initial accuracy, 100 ppm/°C, 50 µA IQ, SOT-23-5 - lacks enable pin and automotive qualification. | Lower-cost industrial use where shutdown control and AEC-Q100 are not required. | Choose REF3030AIDBZR only if system does not require enable functionality or automotive temperature range compliance. |
| MAX6033AESA30+ | 3.0 V, ±0.1% initial accuracy, 75 ppm/°C, 65 µA IQ, SO-8 - larger package, higher supply current, no enable pin. | Legacy board redesigns needing pin-compatible SO-8 footprint and higher output current (25 mA). | Choose MAX6033AESA30+ only when SO-8 packaging and 25 mA drive capability outweigh SOT-23 size and enable advantages. |
Compared with REF3030AIDBZR and MAX6033AESA30+, LM4128DQ1MF3.0/NOPB uniquely combines AEC-Q100 Grade 1 qualification, enable-controlled shutdown, and SOT-23 footprint - making it the sole option for space-constrained automotive or portable medical devices requiring guaranteed low-power sequencing.
Availability
LM4128DQ1MF3.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial process controllers requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LM4128DQ1MF3.0/NOPB 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision analog IC design and automotive-grade product validation.
LM4128DQ1MF3.0/NOPB belongs to TI's precision voltage reference product line, engineered specifically for high-accuracy, low-power, and automotive-qualified applications where stability, small size, and enable-controlled power management are essential.
FAQ
What is the maximum input voltage for LM4128DQ1MF3.0/NOPB?
The absolute maximum input voltage for LM4128DQ1MF3.0/NOPB is 6 V, but the recommended operating maximum is 5.5 V per the Electrical Characteristics table. Exceeding 5.5 V risks violating the Absolute Maximum Ratings and may cause permanent damage. The device functions correctly within VREF + 400 mV (i.e., ≥3.4 V) to 5.5 V at load currents up to 20 mA.
Does LM4128DQ1MF3.0/NOPB require an output capacitor for stability?
No, LM4128DQ1MF3.0/NOPB is internally compensated and stable with 0–10 µF output capacitance, including no capacitor. An output capacitor (COUT) is optional and improves load transient response but increases turn-on time. Input capacitor CIN (≥0.1 µF ceramic) is mandatory and must be ≥ COUT value per the Application Information section.
What does the 'DQ' suffix in LM4128DQ1MF3.0/NOPB indicate?
The 'DQ' denotes AEC-Q100 Grade 1 qualification and automotive manufacturing flow. 'D' refers to the grade (A/B/C/D denote accuracy/tempco tiers), and 'Q' confirms automotive qualification. LM4128DQ1MF3.0/NOPB is the A-grade (±0.1%) variant manufactured on TI's automotive-grade flow, with full traceability and extended temperature validation (−40°C to +125°C).
Can LM4128DQ1MF3.0/NOPB drive a 10 µF capacitive load?
Yes, LM4128DQ1MF3.0/NOPB is explicitly characterized and guaranteed stable with capacitive loads up to 10 µF, as stated in the Features and Application Information sections. This eliminates need for external isolation resistors or damping networks typically required by older references, simplifying layout and reducing component count.
What is the typical turn-on time for LM4128DQ1MF3.0/NOPB?
Turn-on time for LM4128DQ1MF3.0/NOPB is typically 33.2 µs into a 1 µF load and 78.8 µs into a 10 µF load, measured to 90% of final 3.0 V output. Under brown-out conditions or at −40°C, turn-on time may extend up to 10 ms. Enable pin assertion initiates this sequence; the device remains in shutdown until EN rises above VIH threshold (~65% VIN).
LM4128DQ1MF3.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 285µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.4V ~ 5.5V
- Current - Supply:
- 100µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4128DQ1MF3.0/NOPB FAQ
1.How can I place an order for LM4128DQ1MF3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4128DQ1MF3.0/NOPB 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 LM4128DQ1MF3.0/NOPB reliable?
The price and inventory of LM4128DQ1MF3.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4128DQ1MF3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4128DQ1MF3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4128DQ1MF3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4128DQ1MF3.0/NOPB?
LM4128DQ1MF3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4128DQ1MF3.0/NOPB 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 LM4128DQ1MF3.0/NOPB?
For technical support, including LM4128DQ1MF3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4128DQ1MF3.0/NOPB requirements.
6.How does Aetrix verify that LM4128DQ1MF3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4128DQ1MF3.0/NOPB 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 LM4128DQ1MF3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4128DQ1MF3.0/NOPB?
All LM4128DQ1MF3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4128DQ1MF3.0/NOPB, 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 LM4128DQ1MF3.0/NOPB part is unused and in its original packaging.
Return procedure for LM4128DQ1MF3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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