LM61440AANRJRRIn StockTexas Instruments
LM61440AANRJRR is a 40V 4A synchronous buck regulator by Texas Instruments in WQFN-HR package, quiescent current 60µA, from $2.49/250pcs, in stock, ships globally.
- Manufacturer
- Texas Instruments
- Package
- WQFN-HR
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LM61440AANRJRR Datasheet PDF
- Category
- power-management
- Price
- From $2.2632(MOQ 250)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40V maximum input voltage for wide voltage range designs
- 4A continuous output current with integrated high-side and low-side MOSFETs
- Ultra-low 60µA quiescent current for high-efficiency light-load operation
- Adjustable switching frequency 100kHz–2.2MHz
- WQFN-HR 20-pin thermally enhanced package
- Protection: OCP, OVP, thermal shutdown, hiccup mode
Applications
Suitable for industrial power supplies, automotive 12V/24V systems, and IoT devices requiring efficient DC-DC step-down conversion. Also used in embedded computing boards and smart home devices needing regulated 5V or 3.3V rails from a wide input supply.
Specifications
| inputVoltageMin | 3.8V |
| inputVoltageMax | 40V |
| outputCurrentMax | 4A |
| quiescentCurrent | 60µA |
| switchingFrequency | 100–2200kHz |
| operatingTempMin | -40°C |
| operatingTempMax | 125°C |
| packageType | WQFN-HR |
| pinCount | 20 |
| topology | Synchronous Buck |
| Package | WQFN-HR |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL MSL 1 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum input voltage of LM61440AANRJRR?
The LM61440AANRJRR supports a maximum input voltage of 40V, making it suitable for 12V, 24V, and 36V bus systems common in industrial and automotive applications.
What output current can LM61440AANRJRR deliver?
The LM61440AANRJRR can deliver up to 4A continuous output current. It integrates both high-side and low-side MOSFETs, eliminating the need for external switching transistors.
What package does LM61440AANRJRR use and how many pins does it have?
LM61440AANRJRR comes in a 20-pin WQFN-HR (Wettable Flank QFN) package, which supports automated optical inspection (AOI) in SMT assembly and offers good thermal performance.
What are common applications for LM61440AANRJRR?
Common applications include industrial 24V to 5V/3.3V point-of-load converters, automotive accessory power supplies, smart home hubs, embedded computing modules, and motor drive auxiliary rails.
What are the alternatives to LM61440AANRJRR?
Functional alternatives include the LM62460 (similar 40V buck, smaller package), TPS54440 (42V/4A buck), and MP2307 (23V/3A, cost-optimized). For higher current, consider LM61495 (5A, 40V).
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $2.4902 | $622.55 |
| 500+ | $2.4103 | $1205.13 |
| 1000+ | $2.3445 | $2344.45 |
| 3000+ | $2.2631 | $6789.45 |
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