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Analog Devices Inc. LT3380HUJM#TRPBF
- Part No.:
- LT3380HUJM#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LT3380HUJM#TRPBF.pdf
- Description:
- IC REG QD BUCK/LNR 2.25MHZ 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,980
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Product details
Overview
LT3380HUJM#TRPBF from Analog Devices is a multioutput power management IC for advanced portable application processor systems, integrating four synchronous buck DC/DC converters (2.5A, 2.5A, 1.5A, 1.5A) and three 300mA LDO regulators with I²C programmability, operating up to 150°C junction temperature in automotive-grade applications.
For engineers reviewing the LT3380HUJM#TRPBF datasheet, LT3380HUJM#TRPBF pinout, LT3380HUJM#TRPBF application, or LT3380HUJM#TRPBF equivalent, key selection considerations include I²C-controlled dynamic voltage scaling, autonomous power-down sequencing across four time slots, selectable 1.125 MHz / 2.25 MHz switching frequency, 12 µA standby current, and AEC-Q100 qualification for automotive use.
Technical Context
The LT3380HUJM#TRPBF implements independent control logic for four buck regulators (two 2.5A, two 1.5A) and three LDOs (LDO1/LDO2 adjustable via 725 mV reference, LDO3 fixed at 1.8 V), all coordinated through an I²C interface supporting dynamic voltage scaling, fault reporting, and programmable startup/shutdown sequencing.
Its architecture includes per-regulator enable pins, PWR_ON master control, IRQ and PGOOD open-drain status outputs, side-wettable 40-lead QFN package with exposed GND pad, and thermal protection active up to 150°C junction temperature-meeting AEC-Q100 Grade H requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Junction Temp | –40°C to +150°C - supports under-hood automotive operation without derating |
| Buck Output Current | 2.5A (B1/B2), 1.5A (B3/B4) - enables core, memory, I/O, and SoC rail regulation |
| LDO Output Current | 300mA ×3 - supplies low-noise analog rails including fixed 1.8V LDO3 |
| I²C Interface | Standard-mode (400 kHz), DVDD-referenced logic - enables full register access for sequencing and DVS |
| Standby Current | 12 µA - minimizes battery drain during system sleep states |
| Switching Frequency | Selectable 1.125 MHz or 2.25 MHz - balances EMI, efficiency, and component size |
| Package | 40-lead 6 mm × 6 mm QFN with wettable flanks - supports automated optical inspection (AOI) |
Pinout & Package
LT3380HUJM#TRPBF uses a 40-lead plastic side-wettable QFN (6 mm × 6 mm) with exposed GND pad (Pin 41), rated for –40°C to +150°C operation and qualified per AEC-Q100 Grade H.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB_L1, FB_L2, FB_B1–FB_B4 | Feedback inputs | Set output voltages via resistor dividers; LDOs reference 725 mV, bucks reference 725 mV (adjustable 412.5–800 mV) |
| VIN, PVIN1–PVIN4, VIN_L1–VIN_L3 | Power inputs | VIN supplies all regulators; PVINx feed individual bucks; VIN_Lx feed respective LDOs (≤VIN) |
| EN_B1–EN_B4, EN_L1–EN_L3 | Enable inputs | Active-high digital enables with internal 4.5 MΩ pull-down; support pin-strapped or I²C sequencing |
| SW1–SW4 | Buck switch nodes | Connect to inductor high-side terminals; require low-ESR ceramic output capacitors |
| IRQ, PGOOD | Status outputs | Open-drain signals indicating faults (UVLO, overtemp), power-good status, or interrupt conditions |
| PWR_ON | Master enable | Global control: inhibits all EN pins when low; 3 ms delay before enabling after rising edge |
| SDA, SCL, DVDD | I²C interface | DVDD sets logic level (1.6–5.5 V); SDA/SCL support standard-mode I²C with 400 kHz max clock |
Key Features
| Feature | Design Value |
|---|---|
| I²C-programmable sequencing | Four configurable power-down time slots and flexible startup order via command registers |
| Dynamic voltage scaling (DVS) | Real-time output voltage adjustment of all four bucks using integrated DACs and I²C |
| Multi-mode buck operation | Selectable pulse-skipping, Burst Mode®, or forced continuous mode per regulator |
| Automotive reliability | AEC-Q100 Grade H qualified with 150°C max TJ, wettable flanks, and controlled manufacturing |
| Low-noise LDO integration | Three 300mA LDOs-including two adjustable (725 mV ref) and one fixed 1.8V output |
Applications
| Automotive ADAS Camera Module | Industrial Edge AI Processor Board |
|---|---|
Use Scenario: Powering image sensor, ISP, and low-power MCU in compact rear-view camera module exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Single-chip PMIC delivering sequenced 1.2V core, 1.8V I/O, 3.3V sensor bias, and 1.8V analog rails with thermal fault monitoring. Use Value: Eliminates discrete sequencing logic and reduces BOM count by integrating four bucks + three LDOs in AEC-Q100-compliant package. | Use Scenario: Supplying heterogeneous compute platform with ARM Cortex-A72, FPGA fabric, DDR4 memory, and PCIe PHY. IC Role / Device Role / Timing Role: Centralized power controller managing core voltage scaling, memory rail ramp-up/down, and analog supply isolation during sleep/wake transitions. Use Value: Enables dynamic voltage/frequency scaling (DVFS) via I²C to optimize power vs. performance across workloads. |
| 5G Small Cell Radio Unit | Ruggedized Telematics Gateway |
Use Scenario: Powering RF transceiver, baseband processor, and timing circuitry in outdoor-mounted 5G small cell unit. IC Role / Device Role / Timing Role: High-efficiency multi-rail source with burst-mode operation for low-idle power and fast transient response to bursty traffic loads. Use Value: 12 µA standby current extends backup battery life; 2.25 MHz switching enables compact 1 µH inductors. | Use Scenario: Supporting CAN FD, cellular modem, GNSS receiver, and secure MCU in vehicle-to-everything (V2X) gateway operating across –40°C to +105°C ambient. IC Role / Device Role / Timing Role: Automotive-grade PMIC providing fault-tolerant power with IRQ-driven diagnostics and PGOOD validation of all rails. Use Value: AEC-Q100 qualification ensures reliability; PWR_ON coordination prevents brown-out during ignition cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS659122YFFR | 6-buck + 8-LDO, 3.3V–5.5V input, no AEC-Q100 rating, 125°C max TJ | Targeted at industrial/commercial tablets; lacks automotive qualification and extended temp support | Choose for non-automotive designs requiring higher LDO count and lower cost |
| MAX20029ATPA/V+T | 4-buck + 3-LDO, 2.7V–5.5V input, AEC-Q100 Grade 0 (–40°C to +125°C), 12 µA IQ | Same topology but limited to 125°C TJ; no I²C-based DVS-uses dedicated VSEL pins | Choose when I²C control is unnecessary and 125°C suffices for target environment |
Compared with TPS659122YFFR and MAX20029ATPA/V+T, LT3380HUJM#TRPBF uniquely combines AEC-Q100 Grade H qualification, 150°C operation, and full I²C-based dynamic voltage scaling-making it the only option for thermally demanding automotive ADAS or under-hood telematics where both reliability and real-time rail tuning are required.
Availability
LT3380HUJM#TRPBF is available at Aetrix Electronics and suitable for automotive ADAS camera modules, industrial edge AI processors, and 5G small cell radio units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LT3380HUJM#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and automotive markets.
The LT3380 product line delivers highly integrated, I²C-configurable power management solutions for application processor-based systems-designed specifically for automotive infotainment, ADAS, and industrial edge computing where thermal robustness and programmable sequencing are critical.
FAQ
What is the maximum junction temperature rating for LT3380HUJM#TRPBF?
The LT3380HUJM#TRPBF is rated for a maximum junction temperature of +150°C and is qualified per AEC-Q100 Grade H. This allows reliable operation in under-hood automotive environments and other high-temperature industrial applications without thermal derating. The device includes overtemperature protection that activates above 150°C to prevent damage during momentary overload conditions.
Does LT3380HUJM#TRPBF support dynamic voltage scaling (DVS) for all four buck regulators?
Yes, LT3380HUJM#TRPBF supports full dynamic voltage scaling for all four buck regulators via its I²C interface. Each buck's output voltage is controlled by an internal DAC with programmable reference range (412.5 mV to 800 mV), enabling real-time adjustment during operation-critical for optimizing power consumption in application processors and FPGAs.
How does the PWR_ON pin function in LT3380HUJM#TRPBF?
The PWR_ON pin on LT3380HUJM#TRPBF acts as a master enable/disable control. When pulled low, it inhibits all individual EN_Bx and EN_Lx pins regardless of their state. After transitioning high, LT3380HUJM#TRPBF waits 3 ms before allowing enable signals to take effect-ensuring stable VIN before regulator activation and preventing premature startup during power ramp-up.
What are the key differences between LT3380HUJM#TRPBF and the LT3380IUJM#TRPBF variant?
The primary difference is junction temperature rating: LT3380HUJM#TRPBF is specified for –40°C to +150°C operation and qualified per AEC-Q100 Grade H, while LT3380IUJM#TRPBF is rated for –40°C to +125°C and meets AEC-Q100 Grade I. Both share identical pinout, electrical specs, and feature set-but only the 'H' grade supports sustained operation at 150°C junction temperature.
Can LT3380HUJM#TRPBF operate with a 1.8V DVDD supply for its I²C interface?
Yes, LT3380HUJM#TRPBF supports DVDD from 1.6V to 5.5V, so a 1.8V supply is fully compliant. I²C logic levels (SDA/SCL) scale directly to DVDD, and the internal I²C controller operates correctly across this range. DVDD also resets I²C registers to power-on defaults when driven below 1V, enabling hardware-initiated configuration recovery.
LT3380HUJM#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck)
- Number of Outputs:
- 4
- Frequency - Switching:
- 1.12MHz, 2.25MHz
- Voltage/Current - Output 1:
- 0.725V ~ 5.5V, 2.5A
- Voltage/Current - Output 2:
- 0.725V ~ 5.5V, 2.5A
- Voltage/Current - Output 3:
- 1.8V, 1.5A
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 40-QFN (6x6)
LT3380HUJM#TRPBF FAQ
1.How can I place an order for LT3380HUJM#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3380HUJM#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT3380HUJM#TRPBF reliable?
The price and inventory of LT3380HUJM#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3380HUJM#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3380HUJM#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3380HUJM#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3380HUJM#TRPBF?
LT3380HUJM#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3380HUJM#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT3380HUJM#TRPBF?
For technical support, including LT3380HUJM#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3380HUJM#TRPBF requirements.
6.How does Aetrix verify that LT3380HUJM#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3380HUJM#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT3380HUJM#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3380HUJM#TRPBF?
All LT3380HUJM#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3380HUJM#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT3380HUJM#TRPBF part is unused and in its original packaging.
Return procedure for LT3380HUJM#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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