LTC3372MPUH#PBF - 60V Low IQ Buck Controller + 4-Channel 8A Configurable Buck DC/DCs | Analog Devices
MPN: LTC3372MPUH#PBF ✓ פעילLTC3372MPUH#PBF סקירה
A multioutput power supply IC is a single integrated circuit that provides multiple regulated voltage rails from one input source. It typically combines controllers and converters to generate various output voltages for complex systems like FPGAs, processors, and mixed-signal boards. The LTC3372 falls under the category of power management ICs (PMICs), specifically multi-rail DC/DC converters, which are essential for efficient power distribution in modern electronics.
Key features include a wide 4.5V to 60V input range, a low quiescent current (low IQ) buck controller, and four configurable buck converters with total output current up to 8A. The device supports multiple output configurations, allowing designers to tailor the power solution to specific load requirements. Its high-voltage capability makes it suitable for industrial 24V/48V bus systems and automotive applications.
Technically, the LTC3372 employs a current-mode control architecture for fast transient response and stable operation. The integrated buck controller drives external N-channel MOSFETs, enabling high-efficiency conversion at high input voltages. The four buck converters can be paralleled to increase output current or configured for different voltage rails, providing design flexibility. The device operates over a -40°C to 125°C junction temperature range, ensuring reliability in harsh environments.
Typical applications include industrial power supplies, automotive body electronics, telecom and networking equipment, and distributed power architectures. The wide input range and multiple outputs make it ideal for powering FPGAs, microprocessors, and mixed-signal systems that require multiple low-voltage rails from a higher-voltage bus.
When designing with the LTC3372, careful attention must be paid to PCB layout for the high-current paths and the switching nodes. Proper decoupling and thermal management are essential to achieve optimal performance and reliability.
חלופות תחליף ישיר עבור LTC3372MPUH#PBF — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם LTC3372MPUH#PBF (אותו גורם צורה וטביעת רגל) — שונים ב Control Architecture, Package, RoHS Status.
LTC3372HUK#PBF
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LTC3372EUK#PBF
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LTC3372IUK#PBF
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
LTC3372MPUH#TRPBF
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
LTC3372HUK#TRPBF
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
LTC3372EUK#TRPBF
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
LTC3372MPUH#PBF דירוגים מרביים ומאפיינים חשמליים
| טווח מתח כניסה | 4.5V to 60V |
| Output Current (Total) | 8A (configurable buck converters) |
| מספר יציאות | 1 HV controller + 4 buck converters |
| טמפרטורת צומת פעולה | -40°C to 125°C |
| מארז | 48-QFN (7x7mm) |
| סוג הרכבה | Surface Mount |
| Control Architecture | Current-mode control |
| יישור סינכרוני | Yes (all N-channel) |
| סטטוס RoHS | Compliant (#PBF suffix) |
תצורת פינים של LTC3372MPUH#PBF
| פין 1 | VIN — Input supply voltage for the buck converters |
| פין 2 | SW1 — Switch node for buck converter 1 |
| פין 3 | PGND1 — Power ground for buck converter 1 |
| פין 4 | VOUT1 — Output voltage sense for buck converter 1 |
| פין 5 | FB1 — Feedback for buck converter 1 |
| פין 6 | VOUT2 — Output voltage sense for buck converter 2 |
| פין 7 | SW2 — Switch node for buck converter 2 |
| פין 8 | PGND2 — Power ground for buck converter 2 |
| פין 9 | VOUT3 — Output voltage sense for buck converter 3 |
| פין 10 | SW3 — Switch node for buck converter 3 |
| פין 11 | PGND3 — Power ground for buck converter 3 |
| פין 12 | VOUT4 — Output voltage sense for buck converter 4 |
| פין 13 | SW4 — Switch node for buck converter 4 |
| פין 14 | PGND4 — Power ground for buck converter 4 |
| פין 15 | HVIN — Input supply for the high-voltage controller |
| פין 16 | HVSENSE — Sense input for the high-voltage controller |
| פין 17 | HVGATE — Gate drive output for external N-channel MOSFET |
| פין 18 | HVBST — Bootstrap pin for high-side gate drive |
| פין 19 | HVFB — Feedback for the high-voltage controller |
| פין 20 | SGND — Signal ground |
| פין 21 | MODE — Mode selection pin for operation mode |
| פין 22 | RUN — Enable pin for the device |
| פין 23 | PGOOD — Power good indicator |
| פין 24 | SYNC — External clock synchronization input |
| פין 25 | VCC — Internal supply voltage output |
| פין 26 | EXTVCC — External supply input for internal circuitry |
| פין 27 | SS — Soft-start programming pin |
| פין 28 | ITH — Transconductance amplifier output for compensation |
| פין 29 | VREF — Reference voltage output |
| פין 30 | GND — Ground |
| פין 31 | NC — No connect |
| פין 32 | NC — No connect |
| פין 33 | NC — No connect |
| פין 34 | NC — No connect |
| פין 35 | NC — No connect |
| פין 36 | NC — No connect |
| פין 37 | NC — No connect |
| פין 38 | NC — No connect |
| פין 39 | NC — No connect |
| פין 40 | NC — No connect |
| פין 41 | NC — No connect |
| פין 42 | NC — No connect |
| פין 43 | NC — No connect |
| פין 44 | NC — No connect |
| פין 45 | NC — No connect |
| פין 46 | NC — No connect |
| פין 47 | NC — No connect |
| פין 48 | NC — No connect |
יישומים טיפוסיים
LTC3372MPUH#PBF מתאים עבור 6 יישוםs: 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.
מומלץ
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 (-40°C to 125°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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור LTC3372MPUH#PBF — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 | -40°C to 125°C | -40°C to 125°C | 0°C to 85°C | -40°C to 85°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 |
מבדילים עיקריים
- Extended temperature range (-40°C to 125°C) (לעומתLTC3372EUK#PBF)
- High-voltage controller integrated (לעומתLTC3372EUK#PBF)
- Low quiescent current (לעומתLTC3372EUK#PBF)
הערות תכנון
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 -40°C to 125°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.
מידע על תאימות
The #PBF suffix indicates lead-free and RoHS compliant. AEC-Q100 qualification is not specified for this part.
