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Analog Devices Inc. LTC3302CRUCM#TRPBF
- Part No.:
- LTC3302CRUCM#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-PowerWFQFN
- Datasheet:
-
LTC3302CRUCM#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 2A 12TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,482
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Product details
Overview
LTC3302CRUCM#TRPBF from Analog Devices is a monolithic synchronous step-down DC/DC converter delivering up to 2A continuous output current with fixed 6MHz switching frequency, 2.25V–5.5V input range, and factory-programmed output voltage (specific to this variant). It integrates 85mΩ PMOS and 30mΩ NMOS power switches, supports forced continuous, pulse-skipping, and low-ripple Burst Mode® operation, and targets space-constrained POL applications in optical networking and automotive infotainment systems.
For engineers reviewing the LTC3302CRUCM#TRPBF datasheet, LTC3302CRUCM#TRPBF pinout, LTC3302CRUCM#TRPBF application, or LTC3302CRUCM#TRPBF equivalent, key selection criteria include its 6MHz fixed-frequency operation, ±1% VOUT accuracy over temperature, 27ns minimum on-time for high VIN/VOUT ratios, side-wettable-flank FCQFN package for automated optical inspection, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The LTC3302CRUCM#TRPBF uses constant-frequency peak current mode control with internal compensation, enabling fast transient response using minimal external components. Its 6MHz nominal oscillator frequency-factory-programmed for this variant-reduces required inductor and capacitor size while maintaining stability across load and line variations.
Three selectable operating modes are controlled via the MODE/SYNC pin: forced continuous (AGND), pulse-skipping (floating), or Burst Mode® (AVIN). In Burst Mode®, quiescent current drops to 80µA, achieving >90% efficiency at 10mA load with 3.3VIN/1.2VOUT, while forced continuous mode ensures fixed-frequency, low-noise regulation down to zero load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 6MHz (factory-programmed; enables compact 240nH inductors and sub-10µF ceramic output capacitors) |
| Input Voltage Range | 2.25V to 5.5V (supports single-cell Li-ion, USB PD, and 3.3V/5V rail inputs without pre-regulation) |
| Output Current | 2A continuous (derated above 85°C ambient; validated with thermal pad soldered to PCB ground plane) |
| VOUT Accuracy | ±1% over –40°C to +125°C junction temperature (ensures stable core voltage for FPGA/ASIC logic under thermal stress) |
| Min On-Time | 27ns (enables 1.0V output from 2.25V input at 6MHz, supporting high step-down ratios in compact designs) |
| Quiescent Current | 80µA in Burst Mode® sleep (extends battery runtime in always-on automotive sensors and telematics modules) |
| Package Thermal θJA | 48.9°C/W (measured per JESD51-7 on 2S2P JEDEC board; requires exposed pad soldering for full thermal performance) |
Pinout & Package
The LTC3302CRUCM#TRPBF is housed in a thermally enhanced 12-pin Flip-Chip QFN (FCQFN) package measuring 2mm × 2mm × 0.75mm with side-wettable flanks and an exposed thermal pad. This package supports automated optical inspection (AOI) and delivers low thermal resistance (θJCBOTTOM = 6.4°C/W) when the pad is soldered to a multi-layer PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Precision 400mV threshold with 50mV hysteresis; ties directly to VIN for always-on operation or to upstream supply for sequenced power-up |
| VIN (Pins 2, 3) | Main power input | High-current path for top switch; must be bypassed with low-ESR capacitor placed adjacent to both pins |
| SW (Pins 4, 5) | Switch node | Connects to inductor; requires short, wide copper trace to minimize ringing and EMI in 6MHz operation |
| PGND (Pins 6, 7) | Power ground return | Low-impedance return for bottom switch; connects directly to input capacitor negative terminal |
| MODE/SYNC (Pin 8) | Mode selection / clock sync | Configures Burst Mode® (tied to AVIN), forced continuous (tied to AGND), or external clock sync (square wave input) |
| PGOOD (Pin 9) | Power good indicator | Open-drain output asserting high when VOUT is within –2%/+10% window; includes 120µs delay and OV/UV fault detection |
| VOUT (Pin 10) | Fixed output voltage sense | Direct connection point for regulated output; internally tied to feedback reference for factory-set voltage (not adjustable) |
| AGND (Pin 11) | Analog ground reference | Remote sense return for output capacitor; must connect to load-side capacitor cathode to reject PCB IR drop |
| AVIN (Pin 12) | Analog supply input | Bypassed with 1µF ceramic cap to AGND; powers internal reference, error amp, and oscillator circuits |
Key Features
| Feature | Design Value |
|---|---|
| Low-Ripple Burst Mode® Operation | 80µA IQ with <5mVPP output ripple at light loads-ideal for noise-sensitive RF and ADC power domains |
| Up to 100% Duty Cycle | Enables dropout operation down to VIN – VOUT ≈ 150mV (at 2A), critical for battery-powered systems near end-of-discharge |
| Side-Wettable Flank FCQFN | Enables automated AOI of solder joints on 2mm × 2mm footprint-reducing field failure risk in high-volume automotive production |
| Integrated Overvoltage Protection | Shuts off top switch if FB exceeds 110% of nominal VOUT; prevents damage to downstream 1.2V/1.8V logic during transient faults |
| AEC-Q100 Qualified | Rated for –40°C to +125°C ambient; qualified per stress test requirements for automotive infotainment and ADAS subsystems |
Applications
| Automotive Infotainment Power | Optical Network Line Card POL |
|---|---|
|
Use Scenario: Powering SoC cores and DDR memory in head-unit systems requiring low EMI and thermal resilience. IC Role / Device Role / Timing Role: Primary 1.2V/1.8V POL regulator with 6MHz switching synchronized to system clock to avoid beat frequencies. Use Value: Side-wettable flanks ensure solder joint reliability in thermal cycling environments; ±1% accuracy maintains timing margins for DDR4 interfaces. |
Use Scenario: Local regulation for transceiver ASICs on 1RU line cards where board area is constrained by dense connector layouts. IC Role / Device Role / Timing Role: Compact 2A buck delivering 1.0V from 3.3V backplane with minimal BOM count (no external compensation). Use Value: 2mm × 2mm FCQFN saves >60% PCB area vs. comparable 3mm × 3mm QFN; 27ns min on-time supports 3.3V→1.0V conversion at 6MHz. |
| FPGA Core Supply | Industrial Sensor Node |
|
Use Scenario: Providing clean, sequenced 1.2V core voltage for Xilinx Artix-7 FPGAs in programmable logic controllers. IC Role / Device Role / Timing Role: Regulator with precision enable threshold (400mV) and soft-start for controlled power-up sequencing with companion I/O supply. Use Value: Internal soft-start limits inrush current to <1.5A; PGOOD signal validates regulation before FPGA configuration begins. |
Use Scenario: Battery-powered condition monitoring sensor with 10-year lifetime requirement and intermittent wake-up cycles. IC Role / Device Role / Timing Role: Ultra-low-IQ Buck converter supplying 3.3V microcontroller and analog front-end from coin cell or energy harvester. Use Value: 80µA Burst Mode® IQ extends shelf life; shutdown current of 1µA enables true "off" state during deep sleep intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6286418RTER | 4MHz fixed frequency, 1.8V fixed output, 1.8V–5.5V input, 2A, 1.2mm × 1.6mm WSON | Smaller package but no AEC-Q100 rating; lacks side-wettable flanks and Burst Mode® IQ spec | Select for ultra-compact consumer IoT where automotive qualification is unnecessary |
| MP2174GQZ-P | 2.5V–5.5V input, 1.2V fixed output, 2A, 2MHz, 2mm × 2mm QFN, no AEC-Q100 | Lower frequency increases inductor size; no 6MHz option or side-wettable flanks; higher 120µA IQ in light-load mode | Select for cost-sensitive industrial controls where 6MHz is not required and AOI is not mandated |
Compared with TPS6286418RTER and MP2174GQZ-P, the LTC3302CRUCM#TRPBF uniquely combines AEC-Q100 qualification, 6MHz operation for miniaturization, side-wettable flanks for automotive AOI compliance, and 80µA Burst Mode® IQ-making it the only choice for safety-critical, space-constrained automotive POL designs.
Availability
LTC3302CRUCM#TRPBF is available at Aetrix Electronics and suitable for optical networking line cards, automotive infotainment systems, and FPGA-based industrial controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LTC3302CRUCM#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 industrial, automotive, communications, and healthcare markets with precision power, signal chain, and RF solutions.
The LTC3302 product line delivers ultra-compact, high-frequency synchronous buck regulators targeting space- and noise-constrained point-of-load applications in automotive ADAS, optical transport, and FPGA/ASIC power domains.
FAQ
What is the factory-programmed output voltage of the LTC3302CRUCM#TRPBF?
The LTC3302CRUCM#TRPBF is a fixed-output variant with its output voltage programmed at the factory. While the LTC3302 family supports outputs from 0.5V to 3.65V in 50mV steps, the specific VOUT for LTC3302CRUCM#TRPBF is not stated in the provided documentation. To confirm the exact voltage, consult the part marking "LHSM" on the device or refer to Analog Devices' official ordering information table for this variant.
Does the LTC3302CRUCM#TRPBF require external compensation components?
No, the LTC3302CRUCM#TRPBF features internal compensation and does not require external compensation components. Its peak current mode architecture with integrated error amplifier and slope compensation eliminates the need for external RC networks, simplifying design and reducing BOM count for the fixed-output configuration.
Can the LTC3302CRUCM#TRPBF be synchronized to an external clock source?
Yes, the LTC3302CRUCM#TRPBF can be synchronized to an external clock via the MODE/SYNC pin. When driven with a square wave within ±20% of its nominal 6MHz frequency, the internal oscillator locks to the external source's rising edge and operates in forced continuous mode-enabling EMI reduction through frequency dithering or alignment with system clocks.
What thermal performance can be expected from the LTC3302CRUCM#TRPBF in a typical 2-layer PCB layout?
In a standard 2-layer JEDEC 2S2P board, the LTC3302CRUCM#TRPBF exhibits θJA = 48.9°C/W. With 2A load and 3.3VIN/1.2VOUT, power dissipation is ~240mW; this yields ~12°C rise above ambient. Full thermal performance requires soldering the exposed pad to a solid ground plane-omitting this reduces heat transfer and risks thermal shutdown above 85°C ambient.
How does the LTC3302CRUCM#TRPBF handle output short-circuit conditions?
The LTC3302CRUCM#TRPBF employs dual current limiting: peak switch current limit (3.2A typical) and valley inductor current limit (2.7A). During a short, the valley limit triggers cycle skipping until current falls below threshold. Recovery initiates a soft-start ramp if VOUT drops >100mV below regulation, preventing inrush and ensuring controlled re-establishment of output voltage.
LTC3302CRUCM#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.25V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 3.65V
- Current - Output:
- 2A
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TQFN (2x2)
LTC3302CRUCM#TRPBF FAQ
1.How can I place an order for LTC3302CRUCM#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3302CRUCM#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 LTC3302CRUCM#TRPBF reliable?
The price and inventory of LTC3302CRUCM#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3302CRUCM#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3302CRUCM#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3302CRUCM#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3302CRUCM#TRPBF?
LTC3302CRUCM#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3302CRUCM#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 LTC3302CRUCM#TRPBF?
For technical support, including LTC3302CRUCM#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3302CRUCM#TRPBF requirements.
6.How does Aetrix verify that LTC3302CRUCM#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3302CRUCM#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 LTC3302CRUCM#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3302CRUCM#TRPBF?
All LTC3302CRUCM#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3302CRUCM#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 LTC3302CRUCM#TRPBF part is unused and in its original packaging.
Return procedure for LTC3302CRUCM#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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