LTC3372MPUH#TR - 60V Low IQ Buck Controller + 4-Channel 8A Configurable Buck DC/DCs | Analog Devices
MPN： LTC3372MPUH#TR ✓ 啟用中LTC3372MPUH#TR 概覽
A multioutput power supply IC is a single integrated circuit that provides multiple regulated voltage rails from one or more input sources. It typically combines a controller for an external high-voltage stage with integrated low-voltage converters, enabling efficient power distribution in complex systems. In the hierarchy of power management, it sits above individual DC-DC converters, offering a complete power solution that reduces component count and board space.
Key features include a wide input voltage range of 4.5V to 60V for the HV controller, low quiescent current for battery-powered applications, and four configurable LV buck converters with up to 8A total output current. The device supports multiple output configurations, allowing designers to tailor the power architecture to specific needs. Its high efficiency and low IQ make it ideal for always-on systems.
Technically, the LTC3372 employs a current-mode control architecture for fast transient response and stable operation. The HV controller drives external N-channel MOSFETs, enabling high-power step-down conversion from elevated input voltages. The LV converters are fully integrated with internal power switches, simplifying design and reducing external component count. The device includes comprehensive protection features such as overcurrent and overtemperature shutdown.
Typical applications include industrial power supplies, automotive infotainment systems, telecom equipment, and distributed power architectures. Its ability to handle high input voltages and provide multiple regulated outputs makes it suitable for systems requiring multiple supply rails from a single source.
When designing with the LTC3372, careful attention must be paid to PCB layout for the high-current paths and the HV controller's gate drive signals. Proper decoupling and thermal management are essential to ensure reliable operation at maximum load.
直接替換替代品，適用於 LTC3372MPUH#TR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LTC3372MPUH#TR （相同外形與佔位） — 差異在於 Synchronous Rectification, Control Architecture, Package, RoHS Status, Input Voltage Range (HV Controller).
LTC3372EUH#TR
✅ 直接替換📋 參考替代品（不在目錄中）
LTC3372IUH#TR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LTC3372MPUH#PBF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LTC3372EUH#PBF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LTC3372IUH#PBF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LTC3372MPUH#TR 最大額定值與電氣特性
| Input Voltage Range (HV Controller) | 4.5 V to 60 V |
| Number of LV Buck Converters | 4 |
| Total Output Current (LV) | 8 A |
| Output Current per Channel | Configurable up to 8 A |
| 工作接面溫度 | -40°C to 125°C |
| 封裝 | 44-pin QFN |
| 安裝類型 | Surface Mount |
| Control Architecture | Current Mode |
| External FETs | All N-Channel |
| Protection Features | Overcurrent, Overtemperature |
| RoHS 狀態 | Compliant |
| REACH Status | Compliant |
LTC3372MPUH#TR 腳位配置
| 腳位 1 | HVIN — High-voltage input for controller |
| 腳位 2 | HVGATE — Gate drive for external N-channel FET |
| 腳位 3 | HVFB — Feedback for HV controller |
| 腳位 4 | LVIN1 — Input for LV buck converter 1 |
| 腳位 5 | LVSW1 — Switch node for LV buck 1 |
| 腳位 6 | LVFB1 — Feedback for LV buck 1 |
| 腳位 7 | LVIN2 — Input for LV buck converter 2 |
| 腳位 8 | LVSW2 — Switch node for LV buck 2 |
| 腳位 9 | LVFB2 — Feedback for LV buck 2 |
| 腳位 10 | LVIN3 — Input for LV buck converter 3 |
| 腳位 11 | LVSW3 — Switch node for LV buck 3 |
| 腳位 12 | LVFB3 — Feedback for LV buck 3 |
| 腳位 13 | LVIN4 — Input for LV buck converter 4 |
| 腳位 14 | LVSW4 — Switch node for LV buck 4 |
| 腳位 15 | LVFB4 — Feedback for LV buck 4 |
| 腳位 16 | GND — Ground |
| 腳位 17 | EN — Enable pin |
| 腳位 18 | MODE — Mode selection |
| 腳位 19 | SYNC — External clock sync |
| 腳位 20 | VCC — Internal supply |
典型應用
LTC3372MPUH#TR 適用於 6 應用s: Industrial Power Supplies, Automotive Infotainment, Telecom Equipment, Distributed Power Architectures, Battery-Powered Systems, FPGA Power Solutions.
Industrial Power Supplies
The LTC3372MPUH#TR's 60V input capability and multiple outputs make it ideal for industrial power supplies that need to generate multiple rails from a high-voltage bus. Its high efficiency reduces heat dissipation, and the configurable outputs allow flexible voltage/current combinations. The wide temperature range ensures reliable operation in factory environments.
推薦
Automotive Infotainment
In automotive infotainment systems, the LTC3372MPUH#TR provides multiple regulated rails for processors, displays, and audio from a 12V battery. Its wide input range handles load dumps and cranking conditions, while the low quiescent current supports always-on features. The -40°C to 125°C temperature range meets automotive requirements.
推薦
Telecom Equipment
Telecom equipment often operates from 48V backplanes, and the LTC3372MPUH#TR's 60V input directly handles this. It generates multiple low-voltage rails for FPGAs, ASICs, and line cards. The high efficiency reduces cooling requirements, and the configurable outputs adapt to different board designs.
推薦
Distributed Power Architectures
The LTC3372MPUH#TR is well-suited for distributed power architectures where a high-voltage bus is stepped down to multiple point-of-load rails. Its HV controller drives external FETs for high-power conversion, while the integrated LV converters handle lower-power rails. This reduces component count and improves efficiency.
推薦
Battery-Powered Systems
With its low quiescent current, the LTC3372MPUH#TR is suitable for battery-powered systems that require multiple rails, such as portable instruments. The wide input range accommodates battery voltage variations, and the high efficiency extends battery life. The configurable outputs allow optimization for different load profiles.
推薦
FPGA Power Solutions
FPGAs require multiple voltage rails (core, I/O, auxiliary) with precise sequencing. The LTC3372MPUH#TR provides up to four configurable outputs that can be sequenced to meet FPGA power-up requirements. Its high efficiency and small footprint make it ideal for dense FPGA boards.
推薦
推薦產品摘要
工程參考資料，適用於 LTC3372MPUH#TR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LTC3372EUH#TR | LTC3372IUH#TR | LTC3372MPUH#PBF |
|---|---|---|---|---|
| Package | 44-pin QFN | 44-pin QFN | 44-pin QFN | 44-pin QFN |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Temperature Grade | -40°C to 125°C | 0°C to 85°C | -40°C to 85°C | -40°C to 125°C |
| Lead-Free | Yes (RoHS) | Yes | Yes | Yes |
| Input Voltage Range | 4.5V to 60V | 4.5V to 60V | 4.5V to 60V | 4.5V to 60V |
| Number of Outputs | 1 HV + 4 LV | 1 HV + 4 LV | 1 HV + 4 LV | 1 HV + 4 LV |
| Total Output Current | 8A (LV) | 8A | 8A | 8A |
| Quiescent Current | Low IQ | Low IQ | Low IQ | Low IQ |
主要差異化特點
- Extended temperature range (-40°C to 125°C) (對比LTC3372EUH#TR)
- High-voltage controller with 60V input (對比LTC3372EUH#TR)
- Low quiescent current for battery operation (對比LTC3372EUH#TR)
設計說明
For the high-current LV buck converters, use wide copper traces and multiple vias for the switch nodes and ground. Place input and output capacitors close to the IC pins to minimize parasitic inductance. The HV controller's gate drive traces should be short and direct to the external FETs to reduce ringing.
The LTC3372MPUH#TR can dissipate significant power when delivering 8A from the LV converters. Ensure adequate thermal vias under the exposed pad and a sufficient copper area for heat spreading. For high ambient temperatures, consider forced airflow or a heatsink.
Do not exceed the absolute maximum input voltage of 60V on the HV pin. Ensure the external FETs are rated for the maximum input voltage and have appropriate gate drive. The feedback resistors for each output must be placed close to the IC to avoid noise pickup.
合規資訊
RoHS and REACH compliant per Analog Devices product page. Not AEC-Q100 qualified; for automotive, verify with manufacturer.
