LTC3372EUH#TRPBF - 60V Low IQ Buck Controller + 4-Channel 8A Configurable Buck DC/DCs | Analog Devices
N.º da peça: LTC3372EUH#TRPBF ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para LTC3372EUH#TRPBF — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com LTC3372EUH#TRPBF (mesmo formato e footprint) — diferindo em Package, Synchronous Rectification.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
LTC3372EUK#TRPBF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LTC3372HUK#TRPBF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LTC3372EUK#PBF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LTC3370
⚡ Mesmo encapsulamento ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
LTC3371
⚡ Mesmo encapsulamento ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TPS65270
⚡ Mesmo encapsulamento ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
LTC3372EUH#TRPBF Classificações máximas e características elétricas
| 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) |
| Temperatura de junção de operação | -40°C to 125°C (E-grade: 0°C to 85°C) |
| Encapsulamento | 48-QFN (7x7mm) |
| Tipo de montagem | Surface Mount |
| Número de pinos | 48 |
| Control Architecture | Current Mode |
| Retificação síncrona | Yes (all N-channel) |
| Status RoHS | Compliant |
Configuração de pinos do LTC3372EUH#TRPBF
| Pino 1 | VIN_HV — High-voltage input for the buck controller |
| Pino 2 | SW_HV — Switch node for the high-voltage controller |
| Pino 3 | BOOST_HV — Bootstrap pin for high-side FET driver |
| Pino 4 | GND — Ground |
| Pino 5 | VIN_LV1 — Input for LV buck 1 |
| Pino 6 | SW1 — Switch node for LV buck 1 |
| Pino 7 | VOUT1 — Output sense for LV buck 1 |
| Pino 8 | GND — Ground |
| Pino 9 | VIN_LV2 — Input for LV buck 2 |
| Pino 10 | SW2 — Switch node for LV buck 2 |
| Pino 11 | VOUT2 — Output sense for LV buck 2 |
| Pino 12 | GND — Ground |
| Pino 13 | VIN_LV3 — Input for LV buck 3 |
| Pino 14 | SW3 — Switch node for LV buck 3 |
| Pino 15 | VOUT3 — Output sense for LV buck 3 |
| Pino 16 | GND — Ground |
| Pino 17 | VIN_LV4 — Input for LV buck 4 |
| Pino 18 | SW4 — Switch node for LV buck 4 |
| Pino 19 | VOUT4 — Output sense for LV buck 4 |
| Pino 20 | GND — Ground |
| Pino 21 | C1 — Configuration pin 1 |
| Pino 22 | C2 — Configuration pin 2 |
| Pino 23 | C3 — Configuration pin 3 |
| Pino 24 | RT — Switching frequency programming pin |
| Pino 25 | SS — Soft-start programming pin |
| Pino 26 | EN_HV — Enable for HV controller |
| Pino 27 | EN_LV — Enable for LV bucks |
| Pino 28 | PGOOD — Power good indicator |
| Pino 29 | VCC — Internal supply voltage |
| Pino 30 | GND — Ground |
| Pino 31 | EXTVCC — External supply for gate drivers |
| Pino 32 | GND — Ground |
| Pino 33 | NC — No connect |
| Pino 34 | NC — No connect |
| Pino 35 | NC — No connect |
| Pino 36 | NC — No connect |
| Pino 37 | NC — No connect |
| Pino 38 | NC — No connect |
| Pino 39 | NC — No connect |
| Pino 40 | NC — No connect |
| Pino 41 | NC — No connect |
| Pino 42 | NC — No connect |
| Pino 43 | NC — No connect |
| Pino 44 | NC — No connect |
| Pino 45 | NC — No connect |
| Pino 46 | NC — No connect |
| Pino 47 | NC — No connect |
| Pino 48 | NC — No connect |
Aplicações típicas
LTC3372EUH#TRPBF é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para LTC3372EUH#TRPBF — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Integrated high-voltage buck controller (vs LTC3370)
- Wide input voltage range up to 60V (vs TPS65270)
- Pin-configurable output currents (vs LTC3371)
Notas de projeto
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.
Informações de conformidade
RoHS compliant per Analog Devices product page. AEC-Q100 qualification not specified for this variant; consider H-grade for automotive.
