My Inquiry
My Account
Texas Instruments LM2936Z-5.0/LFT4
,TO-226_straightlead.jpg)
- Part No.:
- LM2936Z-5.0/LFT4
- Manufacturer:
- Texas Instruments
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM2936Z-5.0/LFT4.pdf
- Description:
- IC REG LINEAR 5V 50MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,005
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2936Z-5.0/LFT4 from Texas Instruments is a fixed 5-V, 50-mA ultra-low quiescent current LDO voltage regulator in TO-92 package, featuring ≤15 μA IQ at 100 μA load, 200 mV dropout at 50 mA, and −40°C to 125°C operation. It delivers stable power to automotive microcontrollers, body control modules, and always-on sensor nodes where battery life and reverse-polarity robustness are critical.
For engineers reviewing the LM2936Z-5.0/LFT4 datasheet, LM2936Z-5.0/LFT4 pinout, LM2936Z-5.0/LFT4 application, or LM2936Z-5.0/LFT4 equivalent, key selection criteria include input voltage range (5.5 V–40 V), ±2% initial output tolerance, −24 V reverse-battery protection, and mandatory 10 µF/300 mΩ–8 Ω output capacitor for stability.
Technical Context
The LM2936Z-5.0/LFT4 uses a PNP pass transistor architecture enabling low dropout and inherent reverse-battery protection. Its internal bandgap reference and error amplifier maintain regulation across ±3% output tolerance over line, load, and temperature (−40°C to 125°C).
It integrates thermal shutdown (typ. 160°C), short-circuit current limiting (65–250 mA), and −50 V transient input survival. Unlike CMOS-based LDOs, it requires minimum ESR (300 mΩ) on COUT for loop stability - a design constraint directly tied to its PNP compensation scheme.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V with ±2% initial tolerance; ensures accurate MCU core/peripheral rail without external feedback. |
| Quiescent Current | ≤15 μA at 100 μA load; enables >10-year battery life in automotive sleep-mode applications. |
| Dropout Voltage | 200 mV typical at 50 mA; allows regulation down to VIN = 5.2 V, critical for cold-crank scenarios. |
| Input Voltage Range | 5.5 V to 40 V operating; supports 12 V/24 V automotive systems with surge immunity up to −50 V transients. |
| Output Current | 50 mA maximum continuous; sufficient for low-power MCUs, CAN transceivers, and analog sensors. |
| Thermal Protection | Internal thermal shutdown at ~160°C junction; prevents damage during overload or poor heatsinking. |
| Reverse Polarity | Withstands −24 V DC input; eliminates need for external series diode in battery-reversal-prone environments. |
Pinout & Package
LM2936Z-5.0/LFT4 is housed in a 3-pin TO-92 (LP) through-hole package with 4.30 mm × 4.30 mm body size and tab-connected GND. Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Unregulated input | Accepts 5.5–40 V DC; must be decoupled with ≥100 nF if >3″ from bulk filter capacitor. |
| GND (Pin 2) | Ground reference | Common return for input/output paths; connects to exposed tab for thermal conduction and noise reduction. |
| OUT (Pin 3) | Regulated output | Delivers 5.0 V; requires ≥10 µF ceramic or tantalum capacitor with 300 mΩ–8 Ω ESR placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | ≤15 μA at 100 μA load enables multi-year operation from coin cells or vehicle batteries in standby. |
| Reverse-battery protection | Survives −24 V DC input; eliminates external blocking diode and associated 0.3–0.7 V drop in automotive harnesses. |
| Transient survivability | Withstands −50 V input transients per ISO 7637-2 Pulse 1/2b; reduces need for external TVS clamping. |
| Dropout performance | 200 mV typical at full 50 mA load; maintains regulation during engine cranking (VIN dips to ~6 V). |
| Stability assurance | Mandates 10 µF/300 mΩ–8 Ω COUT; prevents oscillation in noisy automotive electrical environments. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Powering LIN transceivers and door-lock actuators in 12 V vehicle architectures with frequent ignition cycling and load-dump events. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying MCU, EEPROM, and analog front-end; handles cold-crank (VIN ≥5.5 V) and reverse-battery fault conditions. Use Value: Eliminates external reverse-protection diode and extends battery life during 30-day key-off drain tests below 50 μA. |
Use Scenario: Remote environmental monitoring unit powered by primary lithium thionyl chloride battery with 15-year shelf life requirement. IC Role / Device Role / Timing Role: Always-on 5 V regulator for ultra-low-power MCU and digital humidity/temperature sensor sampling every 10 minutes. Use Value: 15 μA quiescent current enables >12 years of operation on a single 2.4 Ah cell, validated per IEC 60068-2-14 thermal cycling. |
| Point-of-Load for Legacy MCU | Telematics GPS Receiver Bias |
Use Scenario: Local 5 V rail generation for 8-bit microcontroller in industrial PLC I/O module with wide ambient temperature swing (−40°C to 85°C). IC Role / Device Role / Timing Role: Secondary regulator downstream of 24 V bus; provides clean, stable 5 V despite high-current solenoid switching noise. Use Value: ±3% output tolerance over temperature ensures ADC reference accuracy remains within 1 LSB across full operating range. |
Use Scenario: Bias supply for GPS RF front-end and baseband IC in vehicle telematics unit subject to engine vibration and thermal shock. IC Role / Device Role / Timing Role: Low-noise 5 V source for GPS LNA and crystal oscillator; rejects alternator ripple via −40 dB PSRR at 120 Hz. Use Value: 500 μV RMS output noise (10 Hz–100 kHz) prevents carrier phase jitter that degrades GPS position fix time and accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV71750PDBVR | CMOS-based, 250 mA output, 25 μA IQ, SOT-23-5 package; no reverse-battery protection; requires <100 mΩ ESR. | Better for space-constrained PCBs needing higher current; unsuitable for reverse-polarity automotive harnesses. | Select TLV71750PDBVR only when board layout permits tight COUT placement and reverse faults are excluded by system design. |
| NCP1117ST50T3G | PNP-based, 1 A output, 6 mA IQ, TO-220/SOT-223; no −50 V transient rating; ±2% tolerance only at 25°C. | Higher current capability for motor drivers; lacks extended temp range and transient robustness for automotive use. | Choose NCP1117ST50T3G for industrial AC/DC supplies where cost-per-amp matters more than quiescent current or surge immunity. |
Compared with TLV71750PDBVR and NCP1117ST50T3G, LM2936Z-5.0/LFT4 uniquely balances ultra-low IQ, reverse-battery survival, and −50 V transient tolerance in a legacy-compatible TO-92 footprint - making it irreplaceable for cost-sensitive, safety-critical automotive body electronics where PCB redesign is prohibited.
Availability
LM2936Z-5.0/LFT4 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, and point-of-load MCU power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.
Supply support for LM2936Z-5.0/LFT4 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 specializing in analog and embedded processing solutions, with leadership in power management ICs for automotive, industrial, and personal electronics markets.
The LM2936 product line was designed specifically for automotive and battery-powered systems demanding ultra-low quiescent current, reverse-battery resilience, and wide-input-voltage operation - targeting body electronics, telematics, and always-on sensor subsystems.
FAQ
What is the maximum input voltage the LM2936Z-5.0/LFT4 can withstand without damage?
The LM2936Z-5.0/LFT4 has an absolute maximum input voltage rating of 60 V for transient survival (e.g., ISO 7637-2 Pulse 1), but its recommended operating range is 5.5 V to 40 V DC. Sustained operation above 40 V risks thermal shutdown under load due to safe operating area limits of the internal PNP pass device. Permanent damage occurs if VIN exceeds 60 V.
Does the LM2936Z-5.0/LFT4 require an input capacitor (CIN)?
LM2936Z-5.0/LFT4 does not mandate CIN for basic functionality, but a 100 nF ceramic capacitor is required at the IN pin if the regulator is located more than 3 inches from the main power supply filter capacitor. This minimizes high-frequency noise coupling and improves transient response during load steps.
What output capacitor specifications are mandatory for stable operation of the LM2936Z-5.0/LFT4?
LM2936Z-5.0/LFT4 requires a minimum 10 µF output capacitor with ESR between 300 mΩ and 8 Ω across the full operating temperature range. Ceramic capacitors may be used only with a series resistor (typically 500 mΩ–1 Ω) to meet ESR requirements; X5R/X7R dielectrics are preferred for voltage/temperature stability.
Can the LM2936Z-5.0/LFT4 be used in reverse-battery fault conditions?
Yes - the LM2936Z-5.0/LFT4 is rated for −24 V DC reverse polarity input and −50 V transient survival. Its PNP pass transistor architecture inherently blocks reverse current flow, eliminating the need for an external series diode in automotive battery connections where polarity reversal is possible during service.
Is thermal shutdown active in the LM2936Z-5.0/LFT4, and what is its trip point?
Yes, LM2936Z-5.0/LFT4 includes internal thermal shutdown that activates at approximately 160°C junction temperature. When triggered, output current ceases until the die cools by ~10°C, then regulation automatically resumes. This protects against permanent damage during sustained overload or inadequate PCB copper area in TO-92 mounting.
LM2936Z-5.0/LFT4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 50mA
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- 9 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:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM2936Z-5.0/LFT4 FAQ
1.How can I place an order for LM2936Z-5.0/LFT4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2936Z-5.0/LFT4 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 LM2936Z-5.0/LFT4 reliable?
The price and inventory of LM2936Z-5.0/LFT4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2936Z-5.0/LFT4 is usually 5 days.
3.What payment methods are accepted for LM2936Z-5.0/LFT4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2936Z-5.0/LFT4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2936Z-5.0/LFT4?
LM2936Z-5.0/LFT4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2936Z-5.0/LFT4 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 LM2936Z-5.0/LFT4?
For technical support, including LM2936Z-5.0/LFT4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2936Z-5.0/LFT4 requirements.
6.How does Aetrix verify that LM2936Z-5.0/LFT4 is sourced from the original manufacturer or authorized distributors?
All LM2936Z-5.0/LFT4 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 LM2936Z-5.0/LFT4 meets industry standards.
7.What is the process for return or replacement of LM2936Z-5.0/LFT4?
All LM2936Z-5.0/LFT4 units undergo pre-shipment inspection (PSI). If there is an issue with LM2936Z-5.0/LFT4, 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 LM2936Z-5.0/LFT4 part is unused and in its original packaging.
Return procedure for LM2936Z-5.0/LFT4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2936Z-5.0/LFT4 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
