LTC3372EUH#TRPBF - 60V Low IQ Buck Controller + 4-Channel 8A Configurable Buck DC/DCs | Analog Devices
部品番号: LTC3372EUH#TRPBF ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.9 | $4,450.00 |
| 1,000 | $8.1 | $8,100.00 |
LTC3372EUH#TRPBF 概要
A PMIC (Power Management Integrated Circuit) is a highly integrated device that consolidates multiple power conversion and management functions into a single chip, such as DC/DC converters, LDOs, and battery chargers. The LTC3372 belongs to the class of multioutput switching regulators, which are essential in systems requiring multiple voltage rails from a single input supply, such as industrial, automotive, and communications equipment. By integrating a high-voltage controller and configurable low-voltage bucks, it reduces board space and component count compared to discrete solutions.
Key features include a 60V input capability for the HV controller, low quiescent current (Low IQ) for improved efficiency at light loads, and pin-programmable configurations (C1-C3 pins) that allow the four LV bucks to be assigned to one of eight power configurations. The switching frequency is programmable via an external resistor, enabling optimization between efficiency and component size. The device also includes soft-start, overcurrent protection, and thermal shutdown.
Technically, the LTC3372 uses a current-mode control architecture for fast transient response and stable operation. The HV controller can drive external N-channel MOSFETs, allowing high-current, high-voltage step-down conversion. The LV bucks integrate their power switches, simplifying design and reducing external component count. The pin-strapping configuration provides design flexibility without requiring I2C or SPI communication, making it suitable for standalone applications.
Typical applications include industrial power supplies, automotive infotainment and ADAS systems, telecom and networking equipment, and distributed power architectures. The wide input voltage range and configurable outputs make it ideal for systems that need multiple regulated rails from a 12V or 24V bus.
When designing with the LTC3372, ensure proper PCB layout with adequate ground planes and decoupling capacitors for both the HV controller and LV bucks. The switching frequency should be chosen to balance efficiency and component size, and the inductor values must be selected according to the datasheet guidelines to avoid saturation.
ドロップイン代替品: LTC3372EUH#TRPBF — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LTC3372EUH#TRPBF （同一形状・フットプリント） — 相違点: Package, Synchronous Rectification.
クイック比較ツール — 並列比較する代替部品を選択:
LTC3372EUK#TRPBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC3372HUK#TRPBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC3372EUK#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC3370
⚡ 同一パッケージ ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LTC3371
⚡ 同一パッケージ ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS65270
⚡ 同一パッケージ ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LTC3372EUH#TRPBF 最大定格＆電気的特性
| Input Voltage Range (HV Controller) | 4.5V to 60V |
| Number of LV Buck Regulators | 4 |
| Total LV Buck Output Current | 8A (configurable as 8x1A, 4x2A, 2x4A, etc.) |
| LV Buck Input Voltage Range | 2.25V to 5.5V |
| Output Voltage Range (LV Bucks) | 0.8V to VIN |
| Switching Frequency Range | 1MHz to 3MHz (programmable via external resistor) |
| 動作接合温度 | -40°C to 125°C (E-grade: 0°C to 85°C) |
| パッケージ | 48-QFN (7x7mm) |
| 実装タイプ | Surface Mount |
| ピン数 | 48 |
| Control Architecture | Current Mode |
| 同期整流 | Yes (all N-channel) |
| RoHS ステータス | Compliant |
LTC3372EUH#TRPBF ピン構成
| ピン 1 | VIN_HV — High-voltage input for the buck controller |
| ピン 2 | SW_HV — Switch node for the high-voltage controller |
| ピン 3 | BOOST_HV — Bootstrap pin for high-side FET driver |
| ピン 4 | GND — Ground |
| ピン 5 | VIN_LV1 — Input for LV buck 1 |
| ピン 6 | SW1 — Switch node for LV buck 1 |
| ピン 7 | VOUT1 — Output sense for LV buck 1 |
| ピン 8 | GND — Ground |
| ピン 9 | VIN_LV2 — Input for LV buck 2 |
| ピン 10 | SW2 — Switch node for LV buck 2 |
| ピン 11 | VOUT2 — Output sense for LV buck 2 |
| ピン 12 | GND — Ground |
| ピン 13 | VIN_LV3 — Input for LV buck 3 |
| ピン 14 | SW3 — Switch node for LV buck 3 |
| ピン 15 | VOUT3 — Output sense for LV buck 3 |
| ピン 16 | GND — Ground |
| ピン 17 | VIN_LV4 — Input for LV buck 4 |
| ピン 18 | SW4 — Switch node for LV buck 4 |
| ピン 19 | VOUT4 — Output sense for LV buck 4 |
| ピン 20 | GND — Ground |
| ピン 21 | C1 — Configuration pin 1 |
| ピン 22 | C2 — Configuration pin 2 |
| ピン 23 | C3 — Configuration pin 3 |
| ピン 24 | RT — Switching frequency programming pin |
| ピン 25 | SS — Soft-start programming pin |
| ピン 26 | EN_HV — Enable for HV controller |
| ピン 27 | EN_LV — Enable for LV bucks |
| ピン 28 | PGOOD — Power good indicator |
| ピン 29 | VCC — Internal supply voltage |
| ピン 30 | GND — Ground |
| ピン 31 | EXTVCC — External supply for gate drivers |
| ピン 32 | GND — Ground |
| ピン 33 | NC — No connect |
| ピン 34 | NC — No connect |
| ピン 35 | NC — No connect |
| ピン 36 | NC — No connect |
| ピン 37 | NC — No connect |
| ピン 38 | NC — No connect |
| ピン 39 | NC — No connect |
| ピン 40 | NC — No connect |
| ピン 41 | NC — No connect |
| ピン 42 | NC — No connect |
| ピン 43 | NC — No connect |
| ピン 44 | NC — No connect |
| ピン 45 | NC — No connect |
| ピン 46 | NC — No connect |
| ピン 47 | NC — No connect |
| ピン 48 | NC — No connect |
主な用途
LTC3372EUH#TRPBF の用途: 6 件s: Industrial Power Supplies, Automotive Infotainment and ADAS, Telecom and Networking Equipment, Distributed Power Architectures, Medical Equipment, Portable and Battery-Powered Devices.
Industrial Power Supplies
The LTC3372EUH#TRPBF is ideal for industrial power supplies that require multiple regulated rails from a 24V or 48V bus. Its HV controller handles up to 60V input, while the four LV bucks provide configurable outputs for logic, analog, and I/O rails. The wide input range and low quiescent current ensure efficient operation across varying load conditions, making it suitable for factory automation, process control, and test equipment.
おすすめ
Automotive Infotainment and ADAS
In automotive systems, the LTC3372EUH#TRPBF provides a compact solution for powering infotainment processors, ADAS sensors, and communication modules. Its 60V input capability handles load dumps and transients, while the configurable LV bucks supply core, I/O, and memory voltages. The -40°C to 125°C operating range meets automotive requirements, and the low IQ improves efficiency during standby modes.
おすすめ
Telecom and Networking Equipment
The LTC3372EUH#TRPBF is well-suited for telecom and networking equipment that requires multiple voltage rails from a 48V backplane. The HV controller steps down 48V to an intermediate bus, while the LV bucks generate 3.3V, 2.5V, 1.8V, and 1.0V rails for FPGAs, ASICs, and transceivers. The programmable switching frequency allows optimization for EMI and efficiency, critical in dense networking environments.
おすすめ
Distributed Power Architectures
The LTC3372EUH#TRPBF excels in distributed power architectures where a high-voltage bus is converted to multiple point-of-load rails. Its HV controller can drive external MOSFETs for high-current intermediate bus conversion, while the integrated LV bucks provide precise regulation for sensitive loads. The pin-configurable outputs eliminate the need for digital communication, simplifying design and reducing cost.
おすすめ
Medical Equipment
In medical equipment, the LTC3372EUH#TRPBF provides reliable multi-rail power for imaging systems, patient monitors, and diagnostic devices. Its wide input range accommodates various power sources, and the low noise operation is critical for sensitive analog circuits. The compact 48-QFN package saves board space, and the configurable outputs allow flexibility in system design.
おすすめ
Portable and Battery-Powered Devices
The LTC3372EUH#TRPBF can be used in portable devices that require multiple voltage rails from a battery. Its low quiescent current extends battery life, and the configurable LV bucks can be optimized for different load requirements. The wide input range allows operation from various battery chemistries, and the small package is suitable for space-constrained designs.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: LTC3372EUH#TRPBF — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | LTC3372EUK#TRPBF | LTC3372HUK#TRPBF | LTC3372EUK#PBF |
|---|---|---|---|---|
| Package | 48-QFN (7x7mm) | 48-QFN (7x7mm) | 48-QFN (7x7mm) | 48-QFN (7x7mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Input Voltage Range (HV) | 4.5V to 60V | 4.5V to 60V | 4.5V to 60V | 4.5V to 60V |
| Total LV Buck Output Current | 8A | 8A | 8A | 8A |
| Operating Temperature Range | -40°C to 125°C | -40°C to 125°C | -40°C to 150°C | -40°C to 125°C |
| Switching Frequency | 1MHz to 3MHz | 1MHz to 3MHz | 1MHz to 3MHz | 1MHz to 3MHz |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tray |
主な差別化要因
- Integrated high-voltage buck controller （vs LTC3370)
- Wide input voltage range up to 60V （vs TPS65270)
- Pin-configurable output currents （vs LTC3371)
設計ノート
For the LTC3372EUH#TRPBF, ensure a solid ground plane under the 48-QFN package and place decoupling capacitors close to each VIN pin. The HV controller's switch node (SW_HV) should have a short, wide trace to minimize parasitic inductance. Use a 4-layer PCB with dedicated power and ground planes for optimal performance.
The 48-QFN package has an exposed pad that must be soldered to a thermal via array to dissipate heat effectively. The power dissipation depends on the total output current and voltage drop. For high-current configurations (e.g., 8A total), ensure adequate copper area and airflow to keep the junction temperature below 125°C.
Do not exceed the absolute maximum ratings for VIN_HV (60V) and VIN_LV (5.5V). The C1-C3 configuration pins must be tied to the correct logic levels to avoid unintended output configurations. Also, select the RT resistor carefully to set the switching frequency within the 1MHz to 3MHz range to avoid instability.
コンプライアンス情報
RoHS compliant per Analog Devices product page. AEC-Q100 qualification not specified for this variant; consider H-grade for automotive.
