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Analog Devices Inc. LT8650SPJV#TRPBF
- Part No.:
- LT8650SPJV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 32-TFQFN Exposed Pad
- Datasheet:
-
LT8650SPJV#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 6A DL 32LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
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Product details
Overview
LT8650SPJV#TRPBF from Analog Devices is a dual-channel synchronous step-down regulator delivering up to 6A per channel continuously (12A total) with heat sink, supporting peak loads of 8A per channel. It operates from 3.0V to 42V input, delivers 5V/6A and 3.3V/6A outputs at 2MHz switching frequency, and features Silent Switcher®2 architecture for ultralow EMI in automotive power systems.
For engineers reviewing the LT8650SPJV#TRPBF datasheet, LT8650SPJV#TRPBF pinout, LT8650SPJV#TRPBF application, or LT8650SPJV#TRPBF equivalent, key selection factors include AEC-Q100 qualification, 40ns minimum on-time for high step-down ratios, 6.2µA quiescent current in Burst Mode®, exposed-die thermal interface, and dual VC pins for fast transient response and current sharing.
Technical Context
The LT8650SPJV#TRPBF implements peak current mode control with independent error amplifiers per channel, each configurable via VC1/VC2 for internal compensation (2.5µA IQ/channel in Burst Mode) or external loop tuning. Its second-generation Silent Switcher architecture integrates bypass capacitors and optimizes high-frequency current loops to suppress radiated EMI without layout sensitivity.
It supports three operating modes: Burst Mode® (6.2µA IQ), forced continuous mode (fixed fSW), and spread-spectrum modulation. The CLKOUT pin enables 4-phase synchronization across two chips for 24A supplies, while SYNC allows external clocking or DC-mode selection. Thermal monitoring via TEMP pin provides junction temperature feedback (250mV @ 25°C, 9.5mV/°C slope).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports wide automotive battery transients including cold-crank (4.5V) and load-dump (40V) |
| Output Current (per channel) | 6A continuous (with heat sink), 8A peak - enables compact dual-rail power for ADAS ECUs and infotainment SoCs |
| Switching Frequency | 300kHz to 3MHz (RT-programmable) - allows optimization between efficiency (400kHz) and size (2MHz) |
| Quiescent Current | 6.2µA in Burst Mode® - sustains >10-year battery life in always-on vehicle modules |
| Minimum On-Time | 40ns - enables 12V-to-1.0V conversion at 2MHz for core logic rails |
| Feedback Reference | 0.790V to 0.810V (±1.25%) - ensures tight output regulation across temperature and line |
| Thermal Rating | Junction range –40°C to 150°C - qualified per AEC-Q100 Grade 1 for under-hood deployment |
Pinout & Package
Package: 32-lead LQFN (4mm × 6mm × 0.94mm) with exposed die on top for heat sink attachment and exposed GND pads (pins 33–38) on bottom requiring soldering to PCB ground plane. θJC-TOP = 0.93°C/W enables direct thermal path to heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC1 / VC2 | Error amplifier output & compensation node | Enables fast transient response and channel current sharing when externally compensated; tie to VCC for internal compensation |
| EN/UV1 / EN/UV2 | Hysteretic enable/disable with undervoltage lockout | 0.74V falling / 0.77V rising threshold - supports programmable input UVLO using resistor dividers |
| PG1 / PG2 | Open-drain power-good indicators | Assert low until FBx is within ±7.5% of target; pulled low during UVLO, thermal shutdown, or disable |
| CLKOUT | Phase-shifted clock output | 90° out-of-phase square wave in FCM - synchronizes up to four phases across multiple LT8650SP devices |
| TEMP | Junction temperature monitor | 250mV @ 25°C, +9.5mV/°C - used for system thermal management (not for closed-loop control) |
| RT | Oscillator frequency programming | Resistor to GND sets fSW from 300kHz to 3MHz - enables EMI/efficiency trade-off tuning |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher®2 Architecture | Integrated VIN/VCC/BST bypass capacitors eliminate layout-dependent EMI; meets CISPR 25 Class 5 limits without external filters |
| Exposed Die Thermal Interface | Top-side die exposure requires mechanical heatsink contact - mandatory to achieve 6A/channel continuous rating |
| Dual VC Pins | Independent compensation per channel enables optimized transient response for asymmetric loads (e.g., 5V CPU + 3.3V I/O rails) |
| Spread Spectrum Modulation | Reduces peak EMI by >10dB across 100kHz–10MHz band - activated via SYNC pin DC voltage |
| AEC-Q100 Grade 1 Qualification | Validated for –40°C to +150°C operation - suitable for engine control units, radar modules, and body electronics |
Applications
| Automotive ADAS ECU Power | Infotainment System Core Supply |
|---|---|
Use Scenario: Dual-rail power for vision processor (5V) and sensor interface (3.3V) in forward-facing camera module with strict EMI limits. IC Role / Device Role / Timing Role: Primary dual-output buck regulator providing regulated, synchronized, low-noise power with thermal monitoring. Use Value: Silent Switcher®2 eliminates need for ferrite beads and shielding cans, reducing BOM cost and board area by 35% vs. legacy solutions. | Use Scenario: Powering SoC cores and peripherals in head-unit with battery backup and cold-crank support. IC Role / Device Role / Timing Role: High-efficiency dual-channel DC/DC converter with ultra-low IQ for always-on wake-up circuitry. Use Value: 6.2µA quiescent current extends vehicle battery life beyond 10 years in standby, meeting OEM parasitic drain requirements. |
| Industrial Motor Drive Control | Ruggedized Telematics Gateway |
Use Scenario: Generating isolated gate-driver supplies (5V) and microcontroller rails (3.3V) in IPM-based servo drives. IC Role / Device Role / Timing Role: Robust dual-buck controller tolerant of 42V transients and 150°C ambient temperatures. Use Value: 42V max input and AEC-Q100 qualification ensure reliable operation during motor regeneration spikes and factory wash cycles. | Use Scenario: Power management for LTE/C-V2X telematics module mounted near exhaust with limited airflow. IC Role / Device Role / Timing Role: Thermally optimized dual regulator with exposed-die interface for direct heatsink mounting. Use Value: θJC-TOP = 0.93°C/W enables 6A/channel operation at 120°C case temperature - avoids costly forced-air cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous step-down applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8650SIV#TRPBF | Same silicon, standard-grade (–40°C to 125°C), non-AEC-Q100, no TEMP pin | Targeted for industrial/commercial use only; lacks automotive thermal monitoring and extended temp rating | Select when AEC-Q100 and junction temperature reporting are not required; lower cost for non-automotive designs |
| MPQ8645PGLE-Z | Monolithic dual 6A buck, 3.8V–32V input, no spread spectrum, no CLKOUT sync, 12µA IQ | No automotive qualification; lacks phase-sync capability and ultralow EMI architecture | Choose for cost-sensitive industrial applications where EMI filtering is acceptable and multi-phase scaling is unnecessary |
Compared with LT8650SIV#TRPBF and MPQ8645PGLE-Z, the LT8650SPJV#TRPBF uniquely combines AEC-Q100 qualification, integrated spread spectrum, CLKOUT-based 4-phase scalability, and exposed-die thermal interface - making it the only option for high-reliability, EMI-constrained automotive power rails.
Availability
LT8650SPJV#TRPBF is available at Aetrix Electronics and suitable for automotive ADAS systems, infotainment head-units, and industrial motor control applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for LT8650SPJV#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The LT8650SP product line delivers dual-channel, high-current, ultralow-EMI power conversion for safety-critical automotive electronics - designed specifically to replace discrete multi-regulator solutions in space- and noise-constrained ECUs.
FAQ
What is the maximum continuous output current per channel for LT8650SPJV#TRPBF?
The LT8650SPJV#TRPBF delivers up to 6A per channel continuously when used with an attached heatsink and proper PCB thermal design. Without a heatsink, continuous current is derated based on ambient temperature and airflow - refer to Figure G42/G43 in the datasheet for case temperature rise curves. Peak capability reaches 8A per channel for short durations.
Does LT8650SPJV#TRPBF require external compensation components?
No - LT8650SPJV#TRPBF supports both internal and external compensation. Connecting VC1 and VC2 to VCC enables default internal compensation with 2.5µA quiescent current per channel in Burst Mode®. External RC networks on VC1/VC2 allow custom loop shaping for faster transient response or current sharing, increasing IQ to ~50µA per channel.
How is EMI performance achieved in LT8650SPJV#TRPBF without external filters?
LT8650SPJV#TRPBF achieves ultralow EMI through second-generation Silent Switcher®2 architecture: integrated ceramic bypass capacitors for VIN1/VIN2/VCC/BST1/BST2 minimize high-frequency loop area, symmetrical pin layout reduces magnetic field coupling, and optional spread spectrum modulation lowers peak emissions - enabling CISPR 25 Class 5 compliance on standard 4-layer PCBs.
Can LT8650SPJV#TRPBF synchronize with other regulators?
Yes - LT8650SPJV#TRPBF supports full synchronization. The SYNC pin accepts external clocks (300kHz–3MHz) to align switching edges. In forced continuous mode, CLKOUT outputs a 90° phase-shifted square wave, allowing two LT8650SPJV#TRPBF devices to generate a 4-phase 24A supply with interleaved ripple cancellation.
Is LT8650SPJV#TRPBF pin-compatible with earlier LT8650 variants?
Yes - LT8650SPJV#TRPBF shares identical pinout, package dimensions (4mm × 6mm LQFN), and electrical characteristics with LT8650SPJ and LT8650SPV variants. The "JV" suffix denotes the automotive-grade version with AEC-Q100 qualification and TEMP pin functionality; all share the same footprint and interconnect compatibility.
LT8650SPJV#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®2
- Package/Case:
- 32-TFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.6V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 42V
- Current - Output:
- 6A
- Frequency - Switching:
- 300kHz ~ 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LQFN (6x4)
LT8650SPJV#TRPBF FAQ
1.How can I place an order for LT8650SPJV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8650SPJV#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 LT8650SPJV#TRPBF reliable?
The price and inventory of LT8650SPJV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8650SPJV#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8650SPJV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8650SPJV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8650SPJV#TRPBF?
LT8650SPJV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8650SPJV#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 LT8650SPJV#TRPBF?
For technical support, including LT8650SPJV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8650SPJV#TRPBF requirements.
6.How does Aetrix verify that LT8650SPJV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8650SPJV#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 LT8650SPJV#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8650SPJV#TRPBF?
All LT8650SPJV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8650SPJV#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 LT8650SPJV#TRPBF part is unused and in its original packaging.
Return procedure for LT8650SPJV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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