LT8614IUDC#PBF - 42V 4A Silent Switcher Buck | Analog Devices
MPN: LT8614IUDC#PBF ✓ Hoạt độngLT8614IUDC#PBF Tóm tắt
A synchronous buck converter is a DC-DC regulator that uses integrated high-side and low-side switches to transfer energy efficiently while reducing output voltage from a higher input rail. The LT8614 belongs to the voltage-regulator hierarchy within power-management ICs and uses Analog Devices Silent Switcher architecture to control EMI emissions during high-frequency operation. Its monolithic construction helps reduce external component count and supports compact converter layouts.
The verified product data identifies operation from 3.4 V to 42 V input, 0.97 V to 41.8 V adjustable output, and up to 4 A output current. Efficiency reaches 96% at 1 MHz and 94% at 2 MHz according to the verified distributor data. Burst Mode operation provides 2.5 µA quiescent current for 12 VIN to 3 V regulation in the cited operating condition, making the device suitable for low-power and battery-influenced systems when the converter is not carrying heavy load.
The SYNC pin supports clock synchronization and selection of Burst Mode or pulse-skipping operation, while TR/SS provides soft-start and tracking functions. These features help control inrush current and coordinate multiple rails in systems where sequencing or load sharing matters. The exposed-pad QFN package supports improved heat transfer when the PCB provides adequate copper area.
Typical uses include industrial 24 V or 36 V rail conversion, telecom and networking equipment, robotics, instrumentation, and compact embedded systems. Its wide input range covers automotive-style transient headroom when designed with appropriate upstream protection, but the verified data does not establish AEC-Q100 qualification for this exact suffix.
For implementation, check the complete datasheet pinout, compensation or voltage-setting details, switch-current limits, and thermal limits against the exact LT8614IUDC#PBF ordering code. Place input and output capacitors close to their corresponding pins, provide a continuous ground path, and use the exposed pad as a thermal interface rather than an isolated copper island.
Bộ thay thế dễ dàng lắp đặt cho LT8614IUDC#PBF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
LT8614IUDC#WTRPBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LT8614EUDC#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LT8614HUDC#WTRPBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LT8614IUDC#TRPBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS563201
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADP2302
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LT8614IUDC#PBF Tỷ lệ tối đa & tính chất điện
| Phạm vi điện áp đầu vào | 3.4 V to 42 V |
| Khoảng điện áp đầu ra | 0.97 V to 41.8 V |
| Điện áp tối đa đầu ra | 4 A |
| Tần số chuyển đổi | Up to 3 MHz |
| Efficiency at 1 MHz | Up to 96% |
| Efficiency at 2 MHz | Up to 94% |
| Điện áp yên tĩnh | 2.5 µA in Burst Mode for 12 VIN regulating to 3 V |
| Control Architecture | Silent Switcher synchronous step-down architecture |
| Cấu hình đầu ra | Adjustable single output |
| Synchronization | SYNC pin supports clock synchronization, Burst Mode, and pulse-skipping mode |
| Soft Start and Tracking | Available through TR/SS pin |
| Hộp | 20-lead WFQFN with exposed pad, 3 mm x 4 mm |
| Số chân | 20 leads including exposed pad |
| Nhiệt độ hoạt động | -40°C to 125°C operating junction temperature range |
| Integrated Switches | Yes, monolithic construction with integrated power switches |
| Kiểu lắp đặt | Surface Mount |
Hướng dẫn cấu hình chân LT8614IUDC#PBF 20-lead wfqfn with exposed pad, 3 mm x 4 mm
Cấu hình chân cho LT8614IUDC#PBF (20-lead wfqfn with exposed pad, 3 mm x 4 mm gói). Động cơ điện này có chân cổng, nguồn và đầu ra. Đối với các gói không phân極, tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết hướng dẫn chính xác của chân 1 và chi tiết về vân footprint. Các ứng dụng phổ biến bao gồm thiết kế nguồn cung cấp điện, điều khiển động cơ và chuyển đổi tải.
Không có dữ liệu chân cụ thể sẵn có cho LT8614IUDC#PBF.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LT8614IUDC#PBF phù hợp cho 6 Áp dụngs: Industrial 24 V Rail Conversion, Telecom and Networking Equipment, Robotics and Embedded Control Systems, Instrumentation and Test Equipment, Automotive Electrical and Battery Systems, Battery-Powered Portable Systems.
Industrial 24 V Rail Conversion
The LT8614IUDC#PBF suits industrial point-of-load conversion from a 24 V nominal rail because its verified input range extends from 3.4 V to 42 V and its adjustable output spans 0.97 V to 41.8 V. Silent Switcher architecture is useful in compact control, instrumentation, and automation equipment where conducted EMI must be controlled. Use the exposed pad as a thermal interface, place input and output capacitors close to their pins, and verify industrial transient and surge requirements upstream.
Được đề xuất
Telecom and Networking Equipment
The LT8614IUDC#PBF is a strong candidate for telecom and networking power rails that require efficient conversion at high switching frequency. The verified data cites up to 96% efficiency at 1 MHz and 94% at 2 MHz, helping reduce heat in compact equipment. Silent Switcher architecture minimizes EMI emissions, while the 4 A output rating supports local rails when thermal and inductor limits permit. Validate conducted-emissions margins and system power sequencing during prototype testing.
Được đề xuất
Robotics and Embedded Control Systems
The LT8614IUDC#PBF fits robotics and embedded control systems that need a compact 42 V-capable buck stage for motors, sensors, and logic rails. Its adjustable output allows different rail voltages, while integrated switches reduce the external power-stage component count. Silent Switcher architecture is valuable when reducing EMI around control electronics and cable-connected modules. Check ripple at sensitive loads and provide adequate copper around the exposed pad to manage self-heating.
Được đề xuất
Instrumentation and Test Equipment
The LT8614IUDC#PBF is appropriate for precision instrumentation rails where switching noise and layout-induced emissions must be controlled. Its high-frequency operation supports smaller magnetics and capacitors in compact instruments, while the adjustable output supports multiple internal voltage levels. The verified 2.5 µA Burst Mode current is useful when the instrument spends time in a low-power state. For analog front ends, measure output ripple, transient response, and conducted emissions on the final board.
Được đề xuất
Automotive Electrical and Battery Systems
The LT8614IUDC#PBF can be evaluated for 42 V-class automotive or battery-powered systems because its verified input range reaches 42 V and its synchronous topology supports efficient conversion. Silent Switcher architecture helps control EMI in systems with long wiring harnesses and sensitive electronics. However, the provided data does not confirm AEC-Q100 qualification for this exact I-grade suffix. Verify automotive qualification, load dump, reverse-battery, and transient requirements before production use.
Được đề xuất
Battery-Powered Portable Systems
The LT8614IUDC#PBF can serve as a regulated rail in portable or battery-managed equipment when the input voltage remains within its verified 3.4 V to 42 V range. Burst Mode can reduce quiescent current to the cited 2.5 µA condition, which helps conserve energy during light-load periods. The converter’s high-frequency operation reduces passive-component size, but output ripple and efficiency depend strongly on the battery source impedance and selected inductor. Confirm shutdown behavior and load-current requirements in the system.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LT8614IUDC#PBF — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | LT8614IUDC#WTRPBF | LT8614EUDC#PBF | LT8614HUDC#WTRPBF | TPS563201 | ADP2302 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
Bảo phân biệt quan trọng
- Silent Switcher architecture targets lower EMI than a conventional high-current buck layout (vsTPS563201)
- High-frequency operation supports compact magnetics and capacitors (vsADP2302)
- Wide 42 V input capability for industrial and battery-influenced rails (vsLM2596)
- Integrated switches and synchronization features reduce external control complexity (vsLT8614EUDC#PBF)
Ghi chú thiết kế
Use the official LT8614 datasheet package drawing to place input and output capacitors close to their power terminals and maintain a short, low-loop-area high-current path. The exposed pad should be connected to the recommended ground or thermal structure and tied to adequate PCB copper; do not treat it as an isolated cosmetic pad. Because the part can switch up to 3 MHz, trace inductance and return-current discontinuities can materially affect EMI and transient behavior.
Silent Switcher architecture is intended to reduce EMI, but it does not remove the need for an EMC-focused layout. Keep the switch loop compact, route high-di/dt current through the shortest possible path, use a continuous ground reference, and follow the datasheet guidance for component placement. Validate conducted and radiated emissions with the final enclosure, cable harness, and load. Changing switching frequency or inductor values can alter the EMI profile.
The verified 4 A rating is a headline maximum, not a guarantee of continuous 4 A operation at every output voltage. Check switch conduction and switching losses, inductor copper loss, ambient temperature, exposed-pad copper area, and the PCB thermal resistance. Use the manufacturer’s current-limit and thermal information for design margin, and derate the output current when the converter operates near maximum frequency or in a sealed enclosure.
Do not substitute a generic 42 V, 4 A buck regulator solely because its headline ratings match. Verify pin names and locations, SYNC and TR/SS behavior, compensation or feedback implementation, current-limit response, switch-node layout, and exposed-pad requirements. Also confirm the I-grade suffix and temperature guarantees against the exact datasheet revision before releasing a PCB or placing a production order.
Thông tin tuân thủ
The verified data does not provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. Automotive-grade wording appears for LT8614HUDC#WTRPBF in cross-reference results, but AEC-Q100 qualification for LT8614IUDC#PBF is not established by the provided sources.
