My Inquiry
My Account
Analog Devices Inc. LTC3376IY#PBF
- Part No.:
- LTC3376IY#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 64-LFBGA
- Datasheet:
-
LTC3376IY#PBF.pdf
- Description:
- IC REG BUCK ADJ 12A QUAD 64BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,850
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3376IY#PBF from Analog Devices is a 20V, 4-channel synchronous buck DC/DC controller IC integrating eight configurable 1.5A power stages, supporting output currents from 1.5A to 12A per channel via pin-strappable CFG0–CFG3. It operates from independent 3V–20V inputs, delivers ±1% VOUT accuracy across all channels, and supports Burst Mode® or forced continuous operation for telecom and industrial distributed power systems.
For engineers reviewing the LTC3376IY#PBF datasheet, LTC3376IY#PBF pinout, LTC3376IY#PBF application, or LTC3376IY#PBF equivalent, key selection considerations include its 7mm × 7mm BGA package with internal BST capacitors, RT-programmable 1MHz–3MHz switching frequency, differential feedback sensing, precision RUN thresholds for sequencing, and integrated current monitors per buck channel.
Technical Context
The LTC3376IY#PBF implements peak current mode control with programmable soft-start (0.3–2.5ms), individual PGOOD outputs per channel, and temperature monitoring via TEMP pin (250mV at 25°C, 10mV/°C slope). Its eight discrete 1.5A power stages are grouped into up to four independent buck regulators using CFG0–CFG3 logic inputs to select among 15 fixed configurations.
Each buck channel features differential FB+ and FB− inputs, IMON current monitor output (0.667V/A slope), and dedicated RUN enable with hysteresis (rising threshold 350–730mV, falling 180–220mV). The device supports EXTVCC supply (3V–5.5V) to improve efficiency and includes internal boost capacitors on BST pins to reduce external component count.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 20V per input rail (VINA–H); enables direct use in 12V/24V industrial and telecom systems without pre-regulation. |
| Output Accuracy | ±1% over temperature and line/load; ensures stable voltage rails for sensitive digital loads like FPGAs and ASICs. |
| Switching Frequency | 1MHz to 3MHz (RT-programmable), 2MHz default, or PLL-synchronized; allows optimization of size vs. EMI in space-constrained designs. |
| No-Load Quiescent Current | 27µA (1 buck enabled), 42µA (all bucks enabled); critical for always-on subsystems requiring ultra-low standby power. |
| Power Stage Configuration | 8× 1.5A stages assignable to 1–4 outputs (1.5A–12A/channel); provides flexible rail generation without redesigning power architecture. |
| Thermal Protection | Overtemperature shutdown at 165°C with 10°C hysteresis; prevents thermal runaway during transient overload conditions. |
| Feedback Reference | 400mV ±4mV (VFB+); enables precise regulation with standard resistor dividers and supports low-VOUT applications down to 0.4V. |
Pinout & Package
The LTC3376IY#PBF is housed in a 64-ball BGA package (7.00mm × 7.00mm × 1.34mm, 0.8mm pitch) with thermal performance θJA = 35°C/W and bottom-side thermal path (θJCBOTTOM = 16°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CFG0–CFG3 | Configuration Input Bits | Select one of 15 predefined power stage allocations (e.g., 4×3A, 2×6A, 1×12A); must be tied to INTVCC or GND-no floating allowed. |
| FB1+ to FB4+, FB1− to FB4− | Differential Feedback Inputs | Enable accurate remote sensing; FB− connects directly to GND side of divider, rejecting PCB trace IR drop. |
| IMON1–IMON4 | Current Monitor Outputs | Provide 0.667V/A analog voltage proportional to load current per channel; used for telemetry or fault detection. |
| RUN1–RUN4 | Individual Enable Inputs | Active-high with precision thresholds (350–730mV rising); support staggered power-up sequencing across multiple rails. |
| PGOOD1–PGOOD4 | Open-Drain Power-Good Indicators | Assert high only when output is within ±3.25% of target (96.75%–107.5%); signal valid after soft-start completes and UVLO cleared. |
| EXTVCC | Optional Low-Voltage Supply Input | Accepts 3V–5.5V to power internal circuitry, reducing VCC current draw and improving light-load efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated BST Capacitors | Eliminates 8 external ceramic capacitors normally required for bootstrap circuits, saving >12mm² PCB area and reducing BOM count. |
| Configurable Multi-Output Architecture | One IC replaces up to four discrete buck controllers; reduces layout complexity and improves inter-rail timing correlation. |
| Individual Soft-Start Control | 0.3–2.5ms programmable soft-start per channel via external capacitor on RUN pins; prevents inrush current conflicts during sequencing. |
| Temperature-Monitored Die | TEMP pin outputs 250mV at 25°C with 10mV/°C linear slope; enables real-time thermal margining and predictive thermal throttling. |
| Low-IQ Sleep Mode | 27µA system quiescent current with one buck active; extends battery life in backup or always-on monitoring subsystems. |
Applications
| Telecom Base Station Power | Industrial PLC I/O Module |
|---|---|
Use Scenario: Generating multiple isolated 3.3V, 5V, and 12V rails from a 12V or 24V backplane in 4G/5G remote radio units. IC Role / Device Role / Timing Role: Primary multi-rail DC/DC controller managing power sequencing, current monitoring, and thermal safety across FPGA, transceiver, and interface IC supplies. Use Value: Single-chip solution eliminates four separate buck controllers and associated layout routing, reducing board area by ~35% versus discrete implementation. |
Use Scenario: Powering mixed-signal I/O circuits (ADCs, DACs, isolators) and microcontrollers in modular automation controllers with strict EMC requirements. IC Role / Device Role / Timing Role: Centralized power manager delivering tightly regulated, sequenced rails with differential sensing to reject noise from motor drive sections. Use Value: ±1% output accuracy and 1MHz–3MHz frequency agility allow compliance with IEC 61000-4-3 radiated immunity limits while maintaining signal integrity. |
| Automotive ADAS Domain Controller | High-Density Server PMU |
Use Scenario: Supplying vision processor SoCs (e.g., NVIDIA Orin), radar MMICs, and CAN-FD interfaces in autonomous driving ECUs operating across –40°C to 125°C. IC Role / Device Role / Timing Role: AEC-Q100 qualified (I-grade) multi-output regulator providing fault-tolerant power with individual PGOOD signaling and overtemperature protection. Use Value: 125°C junction rating and robust RUN pin hysteresis ensure reliable startup and operation under engine bay thermal stress. |
Use Scenario: Consolidating core, memory, and auxiliary rail generation in compact edge AI accelerators where board space and thermal density are constrained. IC Role / Device Role / Timing Role: High-efficiency (up to 95%) multi-phase buck controller enabling 12A core rail from a single 12V input with minimal heatsinking. Use Value: Internal BST caps and 7mm × 7mm BGA footprint reduce total solution size by 28% compared to dual 6A controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8859GQ-Z (Monolithic Power) | 4-channel, fixed 3A/channel; no CFG pin configuration; max VIN = 18V; no integrated BST caps. | Limited to fixed 4×3A output; lacks current monitoring and differential sensing; requires external BST caps. | Choose MP8859GQ-Z only if fixed 3A outputs and lower cost outweigh need for configurability and reduced BOM. |
| TPS546D24 (Texas Instruments) | Single 60A D-CAP4 buck; requires external PMBus controller for multi-rail coordination; no integrated current monitors. | Requires companion IC for sequencing and telemetry; higher design complexity for multi-rail systems. | Choose TPS546D24 only for ultra-high-current single-rail needs (>12A); not a functional substitute for LTC3376IY#PBF's integrated multi-output architecture. |
Compared with MP8859GQ-Z and TPS546D24, the LTC3376IY#PBF uniquely combines pin-configurable power stage allocation, integrated BST capacitors, per-channel current monitoring, and differential feedback in a single BGA package-enabling compact, flexible, and thermally robust multi-rail designs without external coordination logic.
Availability
LTC3376IY#PBF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive ADAS domain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC3376IY#PBF 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The LTC3376IY#PBF belongs to Analog Devices' Power by Linear™ family, engineered specifically for high-density, multi-rail power management in space- and thermal-constrained systems where configurability, accuracy, and integration are critical.
FAQ
What is the operating temperature range for the LTC3376IY#PBF?
The LTC3376IY#PBF is specified for operation from –40°C to +125°C junction temperature. This I-grade qualification makes it suitable for demanding environments such as automotive engine compartments and industrial control cabinets. The device includes overtemperature shutdown at 165°C with 10°C hysteresis to protect against sustained thermal overstress. All electrical characteristics in the datasheet are guaranteed across this full range.
How does the CFG0–CFG3 pin configuration work on the LTC3376IY#PBF?
The CFG0–CFG3 pins on the LTC3376IY#PBF are binary inputs that select one of 15 predefined power stage allocations across its four buck channels. For example, CFG[3:0] = 0000 configures four independent 3A outputs, while 1111 selects a single 12A output. Each pin must be hard-wired to either INTVCC or GND-floating is prohibited. The configuration is latched at power-up and remains static during operation.
Can the LTC3376IY#PBF support differential voltage sensing, and how is it implemented?
Yes, the LTC3376IY#PBF supports true differential output voltage sensing via dedicated FB+ and FB− pins for each buck channel (e.g., FB1+, FB1−). FB− must connect directly to the ground-side node of the feedback resistor divider, rejecting PCB trace resistance and improving regulation accuracy under high-current conditions. This feature is essential for maintaining ±1% output accuracy in noisy or high-power layouts.
What is the purpose of the EXTVCC pin on the LTC3376IY#PBF, and how should it be used?
The EXTVCC pin on the LTC3376IY#PBF accepts an external 3V–5.5V supply to power the internal control circuitry, reducing current draw from the main VCC rail and improving light-load efficiency. When used, a 4.7µF ceramic capacitor must bypass EXTVCC to GND. If unused, EXTVCC must be tied to GND-not left floating-to prevent malfunction. This pin enables efficiency gains in systems where a clean 3.3V rail is already available.
Does the LTC3376IY#PBF provide current monitoring, and what is the scaling factor?
Yes, the LTC3376IY#PBF provides analog current monitoring via IMON1–IMON4 pins. Each outputs a voltage proportional to load current with a slope of 0.667V/A (e.g., 1V at 1.5A per configured power stage). The IMON output is zero when the corresponding buck is disabled or in Burst Mode sleep. A typical design uses a 1kΩ resistor from IMONx to GND to generate 1V at full scale, enabling simple ADC-based telemetry or overcurrent detection.
LTC3376IY#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-LFBGA
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 4
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- 16.6V
- Current - Output:
- 12A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-BGA (7x7)
LTC3376IY#PBF FAQ
1.How can I place an order for LTC3376IY#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3376IY#PBF 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 LTC3376IY#PBF reliable?
The price and inventory of LTC3376IY#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3376IY#PBF is usually 5 days.
3.What payment methods are accepted for LTC3376IY#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3376IY#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3376IY#PBF?
LTC3376IY#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3376IY#PBF 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 LTC3376IY#PBF?
For technical support, including LTC3376IY#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3376IY#PBF requirements.
6.How does Aetrix verify that LTC3376IY#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3376IY#PBF 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 LTC3376IY#PBF meets industry standards.
7.What is the process for return or replacement of LTC3376IY#PBF?
All LTC3376IY#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3376IY#PBF, 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 LTC3376IY#PBF part is unused and in its original packaging.
Return procedure for LTC3376IY#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3376IY#PBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
