LTC3372MPUH#PBF - 60V Low IQ Buck Controller + 4-Channel 8A Configurable Buck DC/DCs | Analog Devices
MPN: LTC3372MPUH#PBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.9 | $7,900.00 |
Drop-in alternatives for LTC3372MPUH#PBF 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:
LTC3372HUK#PBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3372EUK#PBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3372IUK#PBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3372MPUH#TRPBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3372HUK#TRPBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3372EUK#TRPBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3372MPUH#PBF Maximum Ratings & Electrical Characteristics
| Input Voltage Range | 4.5V to 60V |
| Output Current (Total) | 8A (configurable buck converters) |
| Number of Outputs | 1 HV controller + 4 buck converters |
| Switching Frequency | [DATA_NEEDED: switching frequency] |
| Quiescent Current | Low IQ (specific value [DATA_NEEDED]) |
| Operating Junction Temperature | -40Β°C to 125Β°C |
| Package | 48-QFN (7x7mm) |
| Mounting Type | Surface Mount |
| Control Architecture | Current-mode control |
| Synchronous Rectification | Yes (all N-channel) |
| RoHS Status | Compliant (#PBF suffix) |
| MSL Level | [DATA_NEEDED: MSL level] |
| Output Voltage Range | [DATA_NEEDED: output voltage range] |
| Efficiency | [DATA_NEEDED: efficiency] |
| Protection Features | [DATA_NEEDED: overcurrent, overvoltage, etc.] |
LTC3372MPUH#PBF Pin Configuration
| Pin 1 | VIN β Input supply voltage for the buck converters |
| Pin 2 | SW1 β Switch node for buck converter 1 |
| Pin 3 | PGND1 β Power ground for buck converter 1 |
| Pin 4 | VOUT1 β Output voltage sense for buck converter 1 |
| Pin 5 | FB1 β Feedback for buck converter 1 |
| Pin 6 | VOUT2 β Output voltage sense for buck converter 2 |
| Pin 7 | SW2 β Switch node for buck converter 2 |
| Pin 8 | PGND2 β Power ground for buck converter 2 |
| Pin 9 | VOUT3 β Output voltage sense for buck converter 3 |
| Pin 10 | SW3 β Switch node for buck converter 3 |
| Pin 11 | PGND3 β Power ground for buck converter 3 |
| Pin 12 | VOUT4 β Output voltage sense for buck converter 4 |
| Pin 13 | SW4 β Switch node for buck converter 4 |
| Pin 14 | PGND4 β Power ground for buck converter 4 |
| Pin 15 | HVIN β Input supply for the high-voltage controller |
| Pin 16 | HVSENSE β Sense input for the high-voltage controller |
| Pin 17 | HVGATE β Gate drive output for external N-channel MOSFET |
| Pin 18 | HVBST β Bootstrap pin for high-side gate drive |
| Pin 19 | HVFB β Feedback for the high-voltage controller |
| Pin 20 | SGND β Signal ground |
| Pin 21 | MODE β Mode selection pin for operation mode |
| Pin 22 | RUN β Enable pin for the device |
| Pin 23 | PGOOD β Power good indicator |
| Pin 24 | SYNC β External clock synchronization input |
| Pin 25 | VCC β Internal supply voltage output |
| Pin 26 | EXTVCC β External supply input for internal circuitry |
| Pin 27 | SS β Soft-start programming pin |
| Pin 28 | ITH β Transconductance amplifier output for compensation |
| Pin 29 | VREF β Reference voltage output |
| Pin 30 | GND β Ground |
| Pin 31 | NC β No connect |
| Pin 32 | NC β No connect |
| 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
LTC3372MPUH#PBF is suitable for 6 applications: Industrial Power Supplies, Automotive Electronics, Telecom and Networking Equipment, FPGA and Processor Power, Battery-Powered Systems, Distributed Power Architectures.
Industrial Power Supplies
The LTC3372MPUH#PBF is ideal for industrial power supplies that require multiple regulated rails from a high-voltage bus. Its 4.5V to 60V input range accommodates 24V and 48V industrial standards, while the four configurable buck converters provide up to 8A total for powering FPGAs, microcontrollers, and sensors. The high-voltage controller drives external MOSFETs for efficient step-down conversion, and the wide temperature range ensures reliable operation in factory environments. Designers can configure the outputs to match specific load requirements, reducing component count and board space.
Recommended
Automotive Electronics
In automotive electronics, the LTC3372MPUH#PBF provides a robust power solution for infotainment, ADAS, and body control modules. Its wide input range handles 12V battery voltage variations, including cold-crank and load-dump transients. The extended temperature range (-40Β°C to 125Β°C) meets automotive under-hood requirements. The multiple outputs can power microcontrollers, CAN transceivers, and sensors. The high-voltage controller efficiently steps down from the battery rail, while the buck converters provide low-voltage rails. This integration simplifies power tree design and improves reliability.
Recommended
Telecom and Networking Equipment
The LTC3372MPUH#PBF is well-suited for telecom and networking equipment that requires multiple low-voltage rails from a 48V backplane. Its 60V input capability directly handles 48V telecom supplies, and the four buck converters can generate 3.3V, 2.5V, 1.8V, and 1.2V rails for FPGAs, ASICs, and line cards. The high-voltage controller can drive an external MOSFET stage for higher-power intermediate bus conversion. The low quiescent current helps meet standby power regulations. The compact 48-QFN package saves board space in dense networking hardware.
Recommended
FPGA and Processor Power
The LTC3372MPUH#PBF provides a complete power solution for FPGAs and processors that require multiple voltage rails with specific sequencing and current requirements. The four configurable buck converters can supply core, I/O, and auxiliary voltages, while the high-voltage controller can power a higher-current rail. The device's flexibility allows designers to adjust output voltages and currents to match the load profile. Its high efficiency reduces thermal stress, and the wide input range supports various system power sources. This integration simplifies the power design and reduces component count.
Recommended
Battery-Powered Systems
The LTC3372MPUH#PBF is suitable for battery-powered systems that require efficient multi-rail power conversion. Its low quiescent current extends battery life in portable and remote applications. The wide input range accommodates various battery chemistries, from 2-cell Li-ion to 48V lead-acid. The four buck converters can efficiently step down to the required voltages, while the high-voltage controller can manage a higher-power load. The device's small package and high integration make it ideal for space-constrained designs. Designers can optimize efficiency by configuring the converters for different load conditions.
Recommended
Distributed Power Architectures
In distributed power architectures, the LTC3372MPUH#PBF serves as a point-of-load (POL) converter that generates multiple local rails from a higher-voltage intermediate bus. Its 60V input capability allows it to be placed close to the load, reducing I2R losses and improving transient response. The four buck converters can be configured to provide different voltages and currents, while the high-voltage controller can drive an external stage for higher-power POLs. This approach simplifies board layout and improves power integrity. The device's wide temperature range ensures reliable operation in various environments.
Recommended
Recommended Products Summary
Engineering reference data for LTC3372MPUH#PBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTC3372HUK#PBF | LTC3372EUK#PBF | LTC3372IUK#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 |
| Operating Temperature Range | -40Β°C to 125Β°C | -40Β°C to 125Β°C | 0Β°C to 85Β°C | -40Β°C to 85Β°C |
| Total Output Current | 8A | 8A | 8A | 8A |
| Number of Buck Converters | 4 | 4 | 4 | 4 |
| High-Voltage Controller | Yes | Yes | Yes | Yes |
| RoHS Compliant | Yes | Yes | Yes | Yes |
Key Differentiators
- Extended temperature range (-40Β°C to 125Β°C) (vs LTC3372EUK#PBF)
- High-voltage controller integrated (vs LTC3372EUK#PBF)
- Low quiescent current (vs LTC3372EUK#PBF)
Design Notes
For optimal performance, place the LTC3372MPUH#PBF close to the load and use a solid ground plane. Keep the high-current paths (SW nodes, VIN, VOUT) short and wide to minimize parasitic inductance and resistance. Use multiple vias for thermal relief to the exposed pad. Follow the layout guidelines in the datasheet for the high-voltage controller and buck converters.
The LTC3372MPUH#PBF can dissipate significant power when delivering 8A total output. Ensure adequate thermal management by using a large copper area on the PCB and providing airflow if necessary. The 48-QFN package has an exposed pad that must be soldered to a thermal pad on the PCB. Monitor junction temperature to stay within the -40Β°C to 125Β°C range.
Do not exceed the absolute maximum input voltage of 60V. Ensure proper decoupling with ceramic capacitors at the input and output of each converter. The high-voltage controller requires a bootstrap capacitor for the high-side gate drive. Verify the feedback resistor values for correct output voltage settings. Use the RUN pin for proper power sequencing if required.
Compliance Information
The #PBF suffix indicates lead-free and RoHS compliant. AEC-Q100 qualification is not specified for this part.
