LTC3372IUH#TRPBF - 60V Low IQ Buck Controller | Analog Devices
N.º de pieza: LTC3372IUH#TRPBF ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $8.5 | $8,50 |
| 10 | $7.65 | $76,50 |
| 100 | $6.8 | $680,00 |
| 500 | $6.12 | $3.060,00 |
| 1.000 | $5.5 | $5.500,00 |
LTC3372IUH#TRPBF Descripción general
A multioutput power supply IC is a single integrated circuit that generates multiple regulated voltage rails from a single input source. It typically combines a high-voltage controller with several low-voltage synchronous buck regulators, enabling efficient power conversion for complex systems such as automotive electronics, industrial equipment, and portable devices. The LTC3372 exemplifies this category by offering both a high-voltage step-down controller and four low-voltage synchronous buck converters in a single 48-pin QFN package.
Key features of the LTC3372IUH#TRPBF include a wide input voltage range of 4.5V to 60V, low quiescent current for extended battery life, and five independent output channels (one HV controller and four LV regulators). The device supports programmable output voltages and switching frequencies, allowing designers to optimize performance for specific applications. The all N-channel synchronous architecture ensures high efficiency across a wide load range, while the integrated MOSFET drivers simplify the external component count.
From a technical perspective, the LTC3372 employs a current-mode control architecture for fast transient response and stable operation. The high-voltage controller can drive external N-channel MOSFETs to step down voltages as high as 60V, while the four low-voltage regulators operate from a lower input rail, typically 2.7V to 5.5V. The device includes comprehensive protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable operation in harsh environments.
Typical applications for the LTC3372IUH#TRPBF include automotive power systems, industrial control equipment, and energy harvesting systems. In automotive applications, the wide input range accommodates load dump and cold crank conditions, while the low quiescent current helps meet standby power requirements. In industrial settings, the multiple outputs can power microcontrollers, sensors, and communication interfaces from a single 24V or 48V bus. For energy harvesting, the low quiescent current and high efficiency maximize the usable power from solar cells or thermoelectric generators.
When designing with the LTC3372, careful attention must be paid to the layout of the high-voltage switching node and the low-voltage regulators to minimize parasitic inductance and ensure stable operation. Proper decoupling and thermal management are essential, especially when operating at high input voltages and load currents. The device's programmable features allow for flexible configuration, but designers should verify all settings against the datasheet to avoid unexpected behavior.
Alternativas directas para LTC3372IUH#TRPBF — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con LTC3372IUH#TRPBF (mismo factor de forma y huella) — difiere en Synchronous Rectification, Package, Operating Temperature Range, Number of Outputs.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
LTC3372IUK#TRPBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTC3372EUH#TRPBF
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$8.1 / unidad
Ver hoja de datos →LTC3372IUH#PBF
✅ Sustitución directa✓ En stock
$8.15 / unidad
Ver hoja de datos →LTC3372IUK#PBF
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
LTC3372EUH#PBF
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$8.1 / unidad
Ver hoja de datos →LTC3372IUH#TRPBF Valores máximos y características eléctricas
| Rango de tensión de entrada | 4.5 V to 60 V |
| Número de salidas | 5 (1 HV controller + 4 LV regulators) |
| Tipo de salida | Adjustable |
| Encapsulado | 48-QFN (7x7 mm) |
| Tipo de montaje | Surface Mount |
| Rango de temperatura de funcionamiento | -40°C to 125°C (junction) |
| Estado RoHS | Compliant |
| REACH Status | Compliant |
| AEC-Q100 Qualified | No |
| Lead-Free | Yes |
| Sin halógenos | Yes |
| Rectificación síncrona | Yes |
| Control Architecture | Current Mode |
| Protection Features | Overcurrent, Thermal Shutdown, UVLO |
Configuración de pines de LTC3372IUH#TRPBF
| Pin 1 | HVIN — High-voltage input supply |
| Pin 2 | HVSW — High-voltage switch node |
| Pin 3 | HVG1 — High-side gate drive |
| Pin 4 | HVG2 — Low-side gate drive |
| Pin 5 | VCC — Internal supply |
| Pin 6 | GND — Ground |
| Pin 7 | LVIN1 — Low-voltage input 1 |
| Pin 8 | LVSW1 — Low-voltage switch node 1 |
| Pin 9 | LVFB1 — Low-voltage feedback 1 |
| Pin 10 | LVIN2 — Low-voltage input 2 |
| Pin 11 | LVSW2 — Low-voltage switch node 2 |
| Pin 12 | LVFB2 — Low-voltage feedback 2 |
Aplicaciones típicas
LTC3372IUH#TRPBF es adecuado para 6 aplicacións: Automotive Power Systems, Industrial Control Equipment, Energy Harvesting Systems, Portable and Battery-Powered Devices, Networking and Communication Equipment, Test and Measurement Instruments.
Automotive Power Systems
The LTC3372IUH#TRPBF is ideal for automotive power systems due to its wide 4.5V to 60V input range, which handles load dump and cold crank transients. The multiple outputs can power microcontrollers, sensors, and communication interfaces from a single 12V or 24V battery bus. The low quiescent current helps meet standby power requirements, and the high efficiency reduces thermal stress in the engine compartment. The device's robust protection features ensure reliable operation in harsh automotive environments.
Recomendado
Industrial Control Equipment
In industrial control systems, the LTC3372IUH#TRPBF provides multiple regulated rails from a 24V or 48V bus, powering PLCs, motor controllers, and sensors. The high-voltage controller can step down the bus voltage efficiently, while the four low-voltage regulators supply logic and analog circuits. The wide input range accommodates voltage sags and surges, and the low quiescent current is beneficial for always-on systems. The device's programmable features allow optimization for different load profiles.
Recomendado
Energy Harvesting Systems
The LTC3372IUH#TRPBF is well-suited for energy harvesting systems where input voltage varies widely, such as solar panels or thermoelectric generators. Its low quiescent current maximizes the usable power from the harvester, and the high efficiency ensures minimal losses. The multiple outputs can power sensors, microcontrollers, and wireless transceivers. The wide input range allows direct connection to the harvester output without additional conditioning, simplifying the design.
Recomendado
Portable and Battery-Powered Devices
For portable devices, the LTC3372IUH#TRPBF offers low quiescent current to extend battery life and multiple outputs to power different subsystems. The high-voltage controller can handle input from a variety of battery chemistries, while the low-voltage regulators provide clean rails for digital and analog circuits. The compact 48-QFN package saves board space, and the high efficiency reduces heat generation in handheld devices.
Recomendado
Networking and Communication Equipment
In networking equipment, the LTC3372IUH#TRPBF can generate multiple rails from a 48V telecom bus, powering processors, FPGAs, and transceivers. The high-voltage controller efficiently steps down the 48V input, while the low-voltage regulators supply core and I/O voltages. The low quiescent current is beneficial for line cards that must meet standby power regulations. The device's multiple outputs reduce the number of separate converters, saving board space and cost.
Recomendado
Test and Measurement Instruments
The LTC3372IUH#TRPBF is used in test and measurement equipment to provide clean, stable power rails for precision analog circuits and digital logic. The low noise and high PSRR of the LV regulators ensure accurate measurements, while the high-voltage controller can handle input from various power sources. The multiple outputs allow a single IC to power an entire instrument, simplifying design and improving reliability.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LTC3372IUH#TRPBF — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | LTC3372IUK#TRPBF | LTC3372EUH#TRPBF | LTC3372IUH#PBF |
|---|---|---|---|---|
| Package | 48-QFN (7x7) | 48-QFN (7x7) | 48-QFN (7x7) | 48-QFN (7x7) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Input Voltage Range | 4.5V to 60V | 4.5V to 60V | 4.5V to 60V | 4.5V to 60V |
| Number of Outputs | 5 | 5 | 5 | 5 |
| Operating Temperature Range | -40°C to 125°C | -40°C to 125°C | 0°C to 85°C | -40°C to 125°C |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tube |
| RoHS | Compliant | Compliant | Compliant | Compliant |
Diferenciadores clave
- Wide input voltage range up to 60V (frente a LTC3370IUH#TRPBF)
- Five outputs including a high-voltage controller (frente a LTC3370IUH#TRPBF)
- Low quiescent current for battery-powered applications (frente a LTC3370IUH#TRPBF)
Notas de diseño
For the high-voltage controller, keep the switching node (HVSW) trace short and wide to minimize parasitic inductance. Place the high-side and low-side MOSFETs close to the IC and use a solid ground plane. For the low-voltage regulators, use separate input capacitors close to each LVIN pin to reduce noise coupling.
The LTC3372 in a 48-QFN package can dissipate significant power when operating at high input voltages and load currents. Ensure adequate copper area on the PCB connected to the exposed pad to improve thermal performance. Consider airflow or a heatsink if the total power dissipation exceeds 2W.
Do not exceed the absolute maximum input voltage of 60V on the HVIN pin. Ensure the bootstrap capacitor for the high-side gate driver is properly sized and placed. Also, verify that the feedback resistors for each output are correctly connected to the respective FB pins to avoid incorrect output voltages.
Información de cumplimiento
RoHS and REACH compliant per distributor data. Not AEC-Q100 qualified.
