LTC3372EUH#TRPBF - 60V Low IQ Buck Controller + 4-Channel 8A Configurable Buck DC/DCs | Analog Devices
MPN: LTC3372EUH#TRPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 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 |
Drop-in alternatives for LTC3372EUH#TRPBF β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
LTC3372EUK#TRPBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3372HUK#TRPBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3372EUK#PBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3370
β‘ Same Packageπ Reference alternative (not in catalog)
LTC3371
β‘ Same Packageπ Reference alternative (not in catalog)
TPS65270
β‘ Same Packageπ Reference alternative (not in catalog)
LTC3372EUH#TRPBF Maximum Ratings & Electrical Characteristics
| 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) |
| Quiescent Current (Low IQ) | Low IQ (typical value [DATA_NEEDED: quiescent current]) |
| Operating Junction Temperature | -40Β°C to 125Β°C (E-grade: 0Β°C to 85Β°C) |
| Package | 48-QFN (7x7mm) |
| Mounting Type | Surface Mount |
| Number of Pins | 48 |
| Control Architecture | Current Mode |
| Synchronous Rectification | Yes (all N-channel) |
| RoHS Status | Compliant |
| MSL Level | [DATA_NEEDED: MSL level] |
LTC3372EUH#TRPBF Pin Configuration
| Pin 1 | VIN_HV β High-voltage input for the buck controller |
| Pin 2 | SW_HV β Switch node for the high-voltage controller |
| Pin 3 | BOOST_HV β Bootstrap pin for high-side FET driver |
| Pin 4 | GND β Ground |
| Pin 5 | VIN_LV1 β Input for LV buck 1 |
| Pin 6 | SW1 β Switch node for LV buck 1 |
| Pin 7 | VOUT1 β Output sense for LV buck 1 |
| Pin 8 | GND β Ground |
| Pin 9 | VIN_LV2 β Input for LV buck 2 |
| Pin 10 | SW2 β Switch node for LV buck 2 |
| Pin 11 | VOUT2 β Output sense for LV buck 2 |
| Pin 12 | GND β Ground |
| Pin 13 | VIN_LV3 β Input for LV buck 3 |
| Pin 14 | SW3 β Switch node for LV buck 3 |
| Pin 15 | VOUT3 β Output sense for LV buck 3 |
| Pin 16 | GND β Ground |
| Pin 17 | VIN_LV4 β Input for LV buck 4 |
| Pin 18 | SW4 β Switch node for LV buck 4 |
| Pin 19 | VOUT4 β Output sense for LV buck 4 |
| Pin 20 | GND β Ground |
| Pin 21 | C1 β Configuration pin 1 |
| Pin 22 | C2 β Configuration pin 2 |
| Pin 23 | C3 β Configuration pin 3 |
| Pin 24 | RT β Switching frequency programming pin |
| Pin 25 | SS β Soft-start programming pin |
| Pin 26 | EN_HV β Enable for HV controller |
| Pin 27 | EN_LV β Enable for LV bucks |
| Pin 28 | PGOOD β Power good indicator |
| Pin 29 | VCC β Internal supply voltage |
| Pin 30 | GND β Ground |
| Pin 31 | EXTVCC β External supply for gate drivers |
| Pin 32 | GND β Ground |
| Pin 33 | NC β No connect |
| Pin 34 | NC β No connect |
| Pin 35 | NC β No connect |
| Pin 36 | NC β No connect |
| Pin 37 | NC β No connect |
| Pin 38 | NC β No connect |
| Pin 39 | NC β No connect |
| Pin 40 | NC β No connect |
| Pin 41 | NC β No connect |
| Pin 42 | NC β No connect |
| Pin 43 | NC β No connect |
| Pin 44 | NC β No connect |
| Pin 45 | NC β No connect |
| Pin 46 | NC β No connect |
| Pin 47 | NC β No connect |
| Pin 48 | NC β No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
LTC3372EUH#TRPBF is suitable for 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.
Recommended
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 -40Β°C to 125Β°C operating range meets automotive requirements, and the low IQ improves efficiency during standby modes.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for LTC3372EUH#TRPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 | -40Β°C to 125Β°C | -40Β°C to 125Β°C | -40Β°C to 150Β°C | -40Β°C to 125Β°C |
| Switching Frequency | 1MHz to 3MHz | 1MHz to 3MHz | 1MHz to 3MHz | 1MHz to 3MHz |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tray |
| Quiescent Current | Low IQ (typical value [DATA_NEEDED]) | Low IQ (typical value [DATA_NEEDED]) | Low IQ (typical value [DATA_NEEDED]) | Low IQ (typical value [DATA_NEEDED]) |
Key Differentiators
- Integrated high-voltage buck controller (vs LTC3370)
- Wide input voltage range up to 60V (vs TPS65270)
- Pin-configurable output currents (vs LTC3371)
Design Notes
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 125Β°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.
Compliance Information
RoHS compliant per Analog Devices product page. AEC-Q100 qualification not specified for this variant; consider H-grade for automotive.
