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Texas Instruments LM2936DT-3.0/NOPB
- Part No.:
- LM2936DT-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
LM2936DT-3.0/NOPB.pdf
- Description:
- IC REG LINEAR 3V 50MA TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:209
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Product details
Overview
LM2936DT-3.0/NOPB from Texas Instruments is a fixed 3.0-V ultra-low quiescent current LDO voltage regulator in TO-252 (DPAK) package, featuring 15 μA quiescent current at 100 μA load, 200 mV dropout at 50 mA output, and ±2% initial output tolerance - designed for always-on automotive subsystems requiring stable low-power bias under wide input voltage transients.
For engineers reviewing the LM2936DT-3.0/NOPB datasheet, LM2936DT-3.0/NOPB pinout, LM2936DT-3.0/NOPB application, or LM2936DT-3.0/NOPB equivalent, key selection criteria include its −40°C to 125°C operating range, −50 V transient input protection, reverse polarity input tolerance down to −24 V, and mandatory 22 µF/300 mΩ–8 Ω output capacitor for stability in battery-backed systems.
Technical Context
The LM2936DT-3.0/NOPB uses a PNP pass transistor architecture enabling low dropout operation while maintaining regulation down to VIN = VOUT + 1 V. Its internal bandgap reference and thermal shutdown circuitry activate at ~160°C, with automatic recovery after ~10°C junction cooldown.
It integrates reverse-battery protection, short-circuit current limiting (65–250 mA), and ripple rejection of −40 dB at 120 Hz. Unlike CMOS-based LDOs, it does not include undervoltage lockout or shutdown control - the LM2936DT variant has no SD pin and operates continuously when powered within 5.5 V–40 V input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% initial tolerance; maintains ±3% over full line/load/temperature range (−40°C to 125°C) |
| Input Voltage Range | 5.5 V to 40 V continuous operation; survives −50 V transients and −24 V reverse polarity inputs |
| Quiescent Current | ≤15 μA at 100 μA load - enables >10-year battery life in automotive keep-alive circuits |
| Dropout Voltage | 200 mV typical at 50 mA output - supports regulation even with marginal input headroom |
| Output Capacitor Requirement | 22 µF minimum with 300 mΩ–8 Ω ESR - mandatory for loop stability; ceramic caps require series resistor |
| Thermal Protection | Internal thermal shutdown at ~160°C junction temperature; auto-recovery after ~10°C cooldown |
| Short-Circuit Current Limit | 65–250 mA - prevents catastrophic failure during sustained output faults |
Pinout & Package
LM2936DT-3.0/NOPB is housed in a TO-252-3 (DPAK) surface-mount package with exposed thermal pad (TAB). The package measures 6.10 mm × 6.58 mm and provides low thermal resistance (RθJA = 50.5°C/W) when properly soldered to copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Unregulated input | Accepts 5.5 V–40 V DC; must withstand −50 V transients and −24 V reverse polarity |
| GND (Pin 2 & Tab) | Ground reference | Primary return path; TAB is electrically connected to GND and critical for thermal performance |
| OUT (Pin 3) | Regulated output | Delivers fixed 3.0 V; requires 22 µF/300 mΩ–8 Ω output capacitor placed adjacent to pins |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 15 μA at 100 μA load - extends battery runtime in always-on telematics modules |
| High-voltage survivability | Withstands −50 V input transients and −24 V reverse polarity - eliminates need for external protection diodes |
| Wide temperature operation | Functional from −40°C to 125°C junction - qualified for under-hood automotive use |
| Stable with ceramic output caps | Supports MLCCs when paired with 500 mΩ–1 Ω series ESR resistor - reduces board space vs. tantalum |
| Integrated fault protection | Combines thermal shutdown, short-circuit current limit, and reverse-polarity protection in single die |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Transmitter |
|---|---|
Use Scenario: Powering CAN transceiver and microcontroller sleep circuitry in door module with 12 V battery supply subject to load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Primary 3.0 V bias regulator delivering stable voltage during engine start-stop cycles and battery voltage sag below 6 V. Use Value: 15 μA quiescent current prevents parasitic drain; −50 V transient rating avoids external TVS; TO-252 thermal pad sustains 50 mA at 85°C ambient. |
Use Scenario: Supplying 3.0 V to 4–20 mA loop transmitter IC and precision ADC in hazardous-area pressure sensor housing. IC Role / Device Role / Timing Role: Isolated low-noise power source decoupled from noisy 24 V field bus, enabling <500 μV RMS output noise. Use Value: ±2% initial tolerance ensures calibrated output accuracy; −40°C to 125°C range covers industrial ambient extremes; reverse-polarity immunity prevents damage during field wiring errors. |
| Point-of-Load for MCU Core | Smart Meter Real-Time Clock (RTC) Bias |
Use Scenario: Generating clean 3.0 V for low-power ARM Cortex-M0+ core in battery-backed IoT edge node with intermittent GSM transmission. IC Role / Device Role / Timing Role: Standby-mode LDO maintaining MCU retention voltage during deep-sleep intervals between sensor reads. Use Value: 200 mV dropout allows operation down to 3.2 V input - extends usable battery range; 22 µF output cap ensures fast wake-up transient response. |
Use Scenario: Providing ultra-stable 3.0 V to RTC oscillator and SRAM in utility smart meter with 10-year lithium battery life requirement. IC Role / Device Role / Timing Role: Always-on voltage reference source with minimal self-discharge impact on primary energy store. Use Value: 15 μA IQ directly translates to <0.13 mAh/year consumption; ±3% total output tolerance over temperature preserves timekeeping accuracy without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76330QDBVRQ1 | CMOS-based; 120 μA IQ; 120 mV dropout at 50 mA; AEC-Q100 qualified | Higher IQ limits battery lifetime; lower dropout improves efficiency at low VIN; requires different output cap ESR profile | Prefer for new AEC-Q100-compliant designs where higher IQ is acceptable and tighter dropout is needed |
| MCP1703T-3002E/MB | PNP-based; 3.5 μA IQ; 600 mV dropout at 250 mA; SOT-23-5 package | Lower IQ but higher dropout; smaller footprint; no reverse-polarity or −50 V transient rating | Prefer for space-constrained portable devices without automotive transients; avoid in battery-backup systems requiring reverse protection |
Compared with TPS76330QDBVRQ1 and MCP1703T-3002E/MB, the LM2936DT-3.0/NOPB uniquely balances ultra-low IQ (15 μA), robust automotive-grade fault protection (−50 V transient, −24 V reverse), and TO-252 thermal capability - making it irreplaceable in cost-sensitive, high-reliability 12 V battery systems where longevity and ruggedness are non-negotiable.
Availability
LM2936DT-3.0/NOPB is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor transmitters, point-of-load microcontroller biasing, and smart meter RTC power applications requiring stable component supply across extended product lifecycles.
Supply support for LM2936DT-3.0/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 company designing analog and embedded processing chips for industrial, automotive, and personal electronics markets.
The LM2936 product line delivers ultra-low-quiescent-current LDO regulators optimized for battery-powered automotive subsystems and industrial equipment requiring long-term reliability under harsh electrical conditions.
FAQ
What is the maximum input voltage the LM2936DT-3.0/NOPB can withstand?
The LM2936DT-3.0/NOPB supports continuous operation up to 40 V input and can survive transient inputs up to −50 V and +60 V. However, sustained operation above 40 V risks safe operating area violation during output short-circuit events. For designs with nominal input >40 V, the LM2936HV variant is required - the LM2936DT-3.0/NOPB must be used strictly within its 5.5 V–40 V operating range.
Does the LM2936DT-3.0/NOPB have a shutdown pin?
No, the LM2936DT-3.0/NOPB does not include a shutdown (SD) pin. Shutdown functionality is only available on the LM2936BM (SOIC-8) variant. The LM2936DT-3.0/NOPB is an always-on regulator - it begins regulating as soon as valid input voltage is applied within its 5.5 V–40 V range and remains active until power is removed.
What output capacitor is required for stable operation of the LM2936DT-3.0/NOPB?
The LM2936DT-3.0/NOPB requires a minimum 22 µF output capacitor with an ESR between 300 mΩ and 8 Ω across the full operating temperature range. Ceramic capacitors may be used only if a 500 mΩ–1 Ω series resistor is added to meet the ESR requirement. The capacitor must be placed adjacent to the OUT and GND pins to ensure loop stability and transient response.
Can the LM2936DT-3.0/NOPB operate with reverse battery connection?
Yes, the LM2936DT-3.0/NOPB includes integrated reverse-polarity protection and can withstand −24 V applied to the IN pin for 1 ms without damage or output reversal. During reverse connection, the output remains near 0 V with no reverse current flow - eliminating the need for external blocking diodes in automotive battery interfaces.
What is the thermal performance of the LM2936DT-3.0/NOPB in its TO-252 package?
The LM2936DT-3.0/NOPB in TO-252 (NDP) package has a junction-to-ambient thermal resistance (RθJA) of 50.5°C/W when mounted on a standard 2-layer PCB with 1-in² copper pour. Its exposed thermal pad (TAB) is internally connected to GND and must be soldered to maximize heat dissipation. At 50 mA load and 14 V input, junction temperature rise is ~45°C above ambient - well within the −40°C to 125°C operating range.
LM2936DT-3.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 50mA
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- 15 µA
- Current - Supply (Max):
- 2.5 mA
- PSRR:
- 60dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-3
LM2936DT-3.0/NOPB FAQ
1.How can I place an order for LM2936DT-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2936DT-3.0/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 LM2936DT-3.0/NOPB reliable?
The price and inventory of LM2936DT-3.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2936DT-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2936DT-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2936DT-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2936DT-3.0/NOPB?
LM2936DT-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2936DT-3.0/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 LM2936DT-3.0/NOPB?
For technical support, including LM2936DT-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2936DT-3.0/NOPB requirements.
6.How does Aetrix verify that LM2936DT-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2936DT-3.0/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 LM2936DT-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2936DT-3.0/NOPB?
All LM2936DT-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2936DT-3.0/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 LM2936DT-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM2936DT-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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