LT3976IUDD#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
Analog Devices LT3976IUDD#PBF is a 42 V, 5 A synchronous step-down switching regulator operating at up to 2 MHz with ultra-low 3.4 µA quiescent current for battery-powered applications. Current-mode PWM control with 4.3 V to 40 V input range delivers high efficiency in a compact 24-pin QFN package. Available from stock worldwide with competitive pricing.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- LT3976IUDD#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.6700(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 3.4 µA quiescent current with 4.3 V to 40 V input range ideal for always-on battery-powered systems
- 5 A output current at up to 2 MHz switching frequency enabling high-efficiency compact power designs
- Current-mode PWM control in a 24-pin QFN package for fast transient response and minimal external component count
Applications
The LT3976IUDD#PBF is well-suited for battery-powered portable instruments, IoT sensor nodes, and automotive subsystems requiring efficient DC-DC step-down conversion from wide input supplies up to 40 V. Its 3.4 µA quiescent current minimizes standby power loss, extending battery life in applications with light or intermittent loads. The 2 MHz switching frequency allows the use of small inductors and capacitors, supporting compact power module designs in industrial and automotive electronics.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1833 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 4.3V |
| JESD-30 Code | R-PQCC-N24 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 12.5A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC24,.12X.2,20 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2700kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range and output current does the LT3976IUDD#PBF support?
The LT3976IUDD#PBF operates from an input voltage range of 4.3 V to 40 V and can deliver up to 5 A of continuous output current. Switching at up to 2 MHz, it enables the use of small passive components while maintaining efficiency. The 24-pin QFN package keeps PCB area compact for industrial and automotive power supply designs.
How does the 3.4 µA quiescent current of LT3976IUDD#PBF benefit battery-powered IoT applications?
With only 3.4 µA quiescent current, the LT3976IUDD#PBF draws negligible standby power when the system is in sleep mode, which is critical for IoT sensors running on coin cells or small Li-ion batteries. In a device cycling 1% duty with a 100 mAh cell, the regulator's standby current contributes less than 0.034 mAh per hour, significantly extending operational life compared to regulators with milliamp-range quiescent currents.
Why is the LT3976IUDD#PBF a strong choice for automotive 12 V to 5 V step-down conversion versus discrete MOSFET designs?
The LT3976IUDD#PBF integrates current-mode PWM control, internal MOSFETs capable of 5 A, and protection features in a single 24-pin QFN, eliminating the discrete gate driver, sense resistor, and multiple FETs typically required. Its 4.3 V to 40 V input range comfortably handles automotive battery voltages from 6 V cold-crank to 40 V load-dump transients, with 2 MHz switching minimizing filter size to sub-µH inductance values.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $12.4800 | $12.48 |
| 10+ | $8.5950 | $85.95 |
| 19+ | $7.5100 | $142.69 |
| 1000+ | $5.6700 | $5670.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”