LTC3372EUH#TRPBF - 60V Low IQ Buck Controller + 4-Channel 8A Configurable Buck DC/DCs | Analog Devices
Référence : LTC3372EUH#TRPBF ✓ Actif| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour LTC3372EUH#TRPBF — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec LTC3372EUH#TRPBF (même facteur de forme et même empreinte) — différant par Package, Synchronous Rectification.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
LTC3372EUK#TRPBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC3372HUK#TRPBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC3372EUK#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC3370
⚡ Même boîtier ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
LTC3371
⚡ Même boîtier ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TPS65270
⚡ Même boîtier ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
LTC3372EUH#TRPBF Valeurs maximales et caractéristiques électriques
| 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) |
| Température de jonction en fonctionnement | -40°C to 125°C (E-grade: 0°C to 85°C) |
| Boîtier | 48-QFN (7x7mm) |
| Type de montage | Surface Mount |
| Nombre de broches | 48 |
| Control Architecture | Current Mode |
| Redressement synchrone | Yes (all N-channel) |
| Statut RoHS | Compliant |
Configuration des broches de LTC3372EUH#TRPBF
| Broche 1 | VIN_HV — High-voltage input for the buck controller |
| Broche 2 | SW_HV — Switch node for the high-voltage controller |
| Broche 3 | BOOST_HV — Bootstrap pin for high-side FET driver |
| Broche 4 | GND — Ground |
| Broche 5 | VIN_LV1 — Input for LV buck 1 |
| Broche 6 | SW1 — Switch node for LV buck 1 |
| Broche 7 | VOUT1 — Output sense for LV buck 1 |
| Broche 8 | GND — Ground |
| Broche 9 | VIN_LV2 — Input for LV buck 2 |
| Broche 10 | SW2 — Switch node for LV buck 2 |
| Broche 11 | VOUT2 — Output sense for LV buck 2 |
| Broche 12 | GND — Ground |
| Broche 13 | VIN_LV3 — Input for LV buck 3 |
| Broche 14 | SW3 — Switch node for LV buck 3 |
| Broche 15 | VOUT3 — Output sense for LV buck 3 |
| Broche 16 | GND — Ground |
| Broche 17 | VIN_LV4 — Input for LV buck 4 |
| Broche 18 | SW4 — Switch node for LV buck 4 |
| Broche 19 | VOUT4 — Output sense for LV buck 4 |
| Broche 20 | GND — Ground |
| Broche 21 | C1 — Configuration pin 1 |
| Broche 22 | C2 — Configuration pin 2 |
| Broche 23 | C3 — Configuration pin 3 |
| Broche 24 | RT — Switching frequency programming pin |
| Broche 25 | SS — Soft-start programming pin |
| Broche 26 | EN_HV — Enable for HV controller |
| Broche 27 | EN_LV — Enable for LV bucks |
| Broche 28 | PGOOD — Power good indicator |
| Broche 29 | VCC — Internal supply voltage |
| Broche 30 | GND — Ground |
| Broche 31 | EXTVCC — External supply for gate drivers |
| Broche 32 | GND — Ground |
| Broche 33 | NC — No connect |
| Broche 34 | NC — No connect |
| Broche 35 | NC — No connect |
| Broche 36 | NC — No connect |
| Broche 37 | NC — No connect |
| Broche 38 | NC — No connect |
| Broche 39 | NC — No connect |
| Broche 40 | NC — No connect |
| Broche 41 | NC — No connect |
| Broche 42 | NC — No connect |
| Broche 43 | NC — No connect |
| Broche 44 | NC — No connect |
| Broche 45 | NC — No connect |
| Broche 46 | NC — No connect |
| Broche 47 | NC — No connect |
| Broche 48 | NC — No connect |
Applications typiques
LTC3372EUH#TRPBF convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LTC3372EUH#TRPBF — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Integrated high-voltage buck controller (vs LTC3370)
- Wide input voltage range up to 60V (vs TPS65270)
- Pin-configurable output currents (vs LTC3371)
Notes de conception
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.
Informations de conformité
RoHS compliant per Analog Devices product page. AEC-Q100 qualification not specified for this variant; consider H-grade for automotive.
