Product Overview
The LM2936MP-5.0 from Texas Instruments is a 50mA, 5V fixed-output ultra-low quiescent current LDO voltage regulator in a SOT-223 package. With 15uA maximum IQ at 100uA load and reverse battery protection, it is specifically designed for automotive and battery-operated systems.
Key Specifications
| Output Voltage | 5.0 V fixed (+/-3% over line, load, temperature) |
| Output Current | 50 mA |
| Input Voltage Range | 5.5 V to 40 V (60V for HV version) |
| Quiescent Current | 9 uA typical (100uA load), 15 uA max |
| Dropout Voltage | 200 mV typical at 50 mA |
| Reverse Polarity Protection | -50V transient, -24V continuous |
| Operating Temperature | -40C to +125C |
Features
- Ultra-low quiescent current of 9uA typical at 100uA load for battery longevity
- 200mV typical dropout at 50mA for wide input-to-output differential
- -24V reverse battery and -50V transient input protection
- Internal short-circuit current limit and thermal shutdown
- SOT-223 surface-mount package for compact layouts
- Automotive ECU 5V standby power with ultra-low IQ
- Battery-powered instrument 5V regulation
- Industrial control 5V supply with reverse polarity protection
- Always-on automotive accessory power with 15uA max IQ
- Automotive ECU 5V standby power with 9uA ultra-low IQ for battery longevity
- Battery-powered instrument 5V regulation with reverse polarity protection
- Industrial control 5V supply with -50V transient protection in SOT-223
- Always-on automotive accessory power with 15uA max quiescent current
- Automotive Electronics: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
- Medical Devices: High-reliability components meet medical industry safety and compliance regulations, ensuring stable operation for medical equipment.
- Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.
- Accepted Payment Methods
- T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
- PayPal: Ideal for small orders, sample orders and quick payments.
Settlement Currency
US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.
Bank Charges
All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.
- Payment Requirements
- Sample and small orders: Shipment will be arranged upon full payment.
- In-stock bulk orders: Goods will be delivered within 2 to 3 working days after full payment.
- Logistics Partners
- International Express: DHL, FedEx, UPS, TNT
- Economy Logistics: Air freight and sea freight for large-volume cargo
- Domestic Delivery: SF Express, Yunda Express
- Order Processing Time
- In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
- Out-of-stock or sourced items: The delivery lead time will be confirmed separately according to brand and inventory status.
- Estimated Transit Time
- International Express: 3 – 7 working days globally
- Air Freight: 7 – 12 working days
- Sea Freight: 25 – 40 working days for heavy and large bulk cargo
- Shipping Fee Rules
- Shipping cost is calculated based on package weight, volume, destination and delivery method.
- Both freight prepaid and freight collect are available. Please provide your courier account number in advance if you choose freight collect.
- Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
- Shipment Tracking
Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.
MOQ & Sample Service
We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.
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All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.
Import Duties & Taxes
All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.
- Handling of Lost or Damaged Goods
- In case of loss or severe damage during transit, please contact us within 48 hours after receiving the tracking information. We will assist you in filing a claim with the logistics provider.
- We shall not be liable for any losses caused by incorrect delivery address, wrong contact information or the buyer’s refusal to complete customs clearance.
- Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
- Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
- Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.
- All components are packed separately to avoid damage caused by friction and collision;
- Shockproof buffer materials are added for fragile products to ensure transportation safety;
- Each package is clearly marked with part number, quantity, batch number and specifications for easy inventory counting and management.
- Anti-static Packaging: Static-sensitive components such as chips, circuit boards and sensors are packaged with anti-static bags, shielding boxes and conductive foam in strict accordance with international anti-static standards to prevent static damage.
- Vacuum Moisture-proof Packaging: Moisture-sensitive components are vacuum-sealed with desiccants to isolate humid air, suitable for ocean transportation and long-term storage.
- Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
- Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
- Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.
Applications
The LM2936MP-5.0 from Texas Instruments is a 50mA, 5V fixed-output ultra-low quiescent current low-dropout voltage regulator in a SOT-223 (DCY) surface-mount package. With less than 15uA quiescent current at a 100uA load, the LM2936 is specifically designed for automotive and battery-operated systems where standby power consumption must be minimized. The device features a low-dropout PNP pass element with 200mV typical dropout at 50mA, allowing operation from input voltages as low as 5.5V while maintaining 5V output regulation. The input operating voltage range extends to 40V (60V for the LM2936HV variant), providing adequate margin for automotive load dump transients. The LM2936 retains all features common to LDO regulators including reverse battery protection (-24V continuous, -50V transient), short-circuit current limiting, and thermal shutdown. The +/-3% output voltage tolerance is guaranteed over the full output current, input voltage, and temperature range. The SOT-223 package provides a compact footprint with the exposed tab serving as both the ground connection and the primary thermal path.
The LM2936MP-5.0 uses a PNP pass transistor LDO topology optimized for ultra-low quiescent current. (1) PNP Pass Element: The PNP transistor is connected between the input and output. Unlike NPN-pass regulators that require base drive current proportional to the load current (increasing IQ), the PNP pass element draws minimal base current. The quiescent current remains nearly constant regardless of load, achieving the ultra-low 9uA typical IQ even at 100uA load. (2) Voltage Regulation: An internal bandgap reference generates a stable voltage. The error amplifier compares a fraction of the output voltage with the reference and adjusts the PNP base drive to maintain regulation. (3) Reverse Polarity Protection: An internal circuit detects negative input voltages and turns off the pass transistor, preventing reverse current flow and protecting the powered circuitry. (4) Thermal Shutdown: When the junction temperature exceeds approximately 150C, the pass transistor is turned off. After the device cools, regulation resumes. (5) Current Limiting: The output current is limited to approximately 120mA (short-circuit) to protect against fault conditions.
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | Output | Regulated 5V output |
| 2 | GND | Ground | Ground (tab, thermal contact) |
| 3 | IN | Power | Input supply (5.5-40V) |
| Manufacturer | Part Number | Package | Notes |
|---|---|---|---|
| TI | LM2936HVMP-5.0 | SOT-223 | 60V input version |
| TI | LM2936MX-5.0 | SOIC-8 | Same function, larger pkg |
| onsemi | NCV4275CDT50RKG | DPAK | 50mA, 5V, automotive |
| ST | LF50CV | TO-220 | 500mA, higher current |
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