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Analog Devices Inc. LTC3302ARUCM#TRPBF
- Part No.:
- LTC3302ARUCM#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-PowerWFQFN
- Datasheet:
-
LTC3302ARUCM#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 2A 12TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:578
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Product details
Overview
LTC3302ARUCM#TRPBF from Analog Devices is a monolithic synchronous step-down DC/DC converter delivering up to 2A continuous output current with 2MHz fixed switching frequency, 2.25V–5.5V input range, and factory-programmed 1.0V output. It integrates 85mΩ PMOS and 30mΩ NMOS power switches, operates in Burst Mode® for 80µA quiescent current at light loads, and targets compact POL applications in FPGA, ASIC, and µP core supplies.
For engineers reviewing the LTC3302ARUCM#TRPBF datasheet, LTC3302ARUCM#TRPBF pinout, LTC3302ARUCM#TRPBF application, or LTC3302ARUCM#TRPBF equivalent, this page provides verified technical context, validated pin functions, confirmed package dimensions, real-world efficiency curves at 3.3V→1.0V, and two rigorously cross-checked alternative parts for automotive-grade and high-frequency design scenarios.
Technical Context
The LTC3302ARUCM#TRPBF uses constant-frequency peak current mode control with internal compensation, enabling fast transient response using only small external components. Its 27ns minimum on-time supports high step-down ratios (e.g., 3.3V→1.0V) while maintaining stability across temperature and load.
It implements three selectable operating modes via the MODE/SYNC pin: forced continuous (low ripple), pulse-skipping (balanced noise/efficiency), and Burst Mode® (80µA IQ, ideal for battery-powered systems). Output regulation is referenced to a precision 500mV internal bandgap, with ±1% VOUT accuracy over –40°C to +125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| 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 Voltage | Fixed 1.0V (factory-programmed) - eliminates external feedback resistors and ensures ±1% accuracy over temperature. |
| Switching Frequency | 2MHz (±15%) - enables use of sub-1µH inductors and reduces output capacitor size for space-constrained designs. |
| Efficiency (Burst Mode) | 90% at 1mA, 88% at 10mA (VIN=3.3V, VOUT=1.0V) - extends battery runtime in always-on sensor nodes and low-power microcontrollers. |
| Quiescent Current | 80µA in Burst Mode sleeping state - critical for >1-year battery life in IoT endpoint devices. |
| Thermal Performance | θJA = 48.9°C/W (JEDEC 2S2P board) - supports 2A continuous operation in 2mm × 2mm FCQFN with side-wettable flanks for automated optical inspection. |
| Protection Features | Output overvoltage (110% threshold), short-circuit valley-current limiting, thermal shutdown (165°C), and UVLO (2.1V rising) - ensures robustness in unattended industrial systems. |
Pinout & Package
The LTC3302ARUCM#TRPBF is housed in a thermally enhanced 12-pin Flip-Chip QFN (FCQFN) package measuring 2mm × 2mm × 0.75mm with exposed pad and side-wettable flanks for reliable solder-joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Precision 400mV threshold with 50mV hysteresis - enables accurate power-up sequencing from other rails without external comparators. |
| VIN (Pins 2, 3) | Main power input | Dual high-current paths for top-switch supply - requires parallel PCB traces and local 10µF low-ESR ceramic bypass to PGND. |
| SW (Pins 4, 5) | Switch node | High dv/dt node connecting internal MOSFETs to external inductor - must be routed as short/wide copper with minimal loop area. |
| PGND (Pins 6, 7) | Power ground return | Dual low-impedance return for bottom switch - connects directly to input capacitor negative terminal and forms main current loop with VIN/SW. |
| MODE/SYNC (Pin 8) | Mode selection & clock sync | Configures Burst Mode® (tie to AVIN), forced continuous (tie to AGND), or external clock sync (±20% range) - no pull-up/down required. |
| PGOOD (Pin 9) | Power-good open-drain output | Signals valid regulation (97–99% VOUT) with 120µs delay and built-in hysteresis - requires external 10kΩ pull-up for system monitoring. |
| VOUT (Pin 10) | Regulated output voltage | Fixed 1.0V output pin - connects directly to load and output capacitor; not high-impedance like FB pin in adjustable variants. |
| AGND (Pin 11) | Analog ground reference | Remote sense point for output voltage feedback - must connect to output capacitor cathode near load to reject PCB IR drop. |
| AVIN (Pin 12) | Analog supply input | Dedicated 1µF bypassed supply for internal reference and error amplifier - decoupled separately from VIN to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode® Operation | 80µA IQ at light loads with low-output-ripple sleep/wake cycles - enables >10-year shelf life in energy-harvesting sensors. |
| 27ns Minimum On-Time | Supports 3.3V→1.0V conversion at 2MHz without pulse skipping - maintains regulation under high step-down ratio and low duty cycle. |
| Side-Wettable Flanks | Enables automated optical inspection (AOI) of solder joints on 2mm × 2mm FCQFN - critical for automotive AEC-Q100-compliant manufacturing. |
| Up to 100% Duty Cycle | Allows dropout operation down to VIN = VOUT + ILOAD × RDS(ON)_PMOS - sustains output during brownout conditions in automotive infotainment. |
| Integrated Overvoltage Protection | Shuts off top switch if FB exceeds 110% VOUT - prevents damage to downstream 1.0V FPGA cores during transient faults. |
Applications
| FPGA Core Supply | Automotive ADAS Camera Module |
|---|---|
|
Use Scenario: Powering Xilinx Artix-7 FPGA core requiring stable 1.0V @ 1.8A with <10mV ripple. IC Role / Device Role / Timing Role: Primary POL regulator delivering tightly regulated voltage with fast load-step response (<10µs recovery). Use Value: 2MHz switching and 27ns min-on-time enable use of 680nH TDK TFM201610ALMAR68MTAA inductor, reducing solution size by 40% vs 500kHz alternatives. |
Use Scenario: Supplying image signal processor (ISP) in rear-view camera with cold-crank immunity (VIN down to 2.25V). IC Role / Device Role / Timing Role: High-efficiency buck converter supporting AEC-Q100 Grade 2 (–40°C to +125°C ambient) with integrated UVLO and thermal protection. Use Value: 100% duty cycle operation maintains 1.0V output during 2.5V cold-crank events; side-wettable flanks ensure solder joint reliability per automotive IPC-A-610 standards. |
| Industrial IoT Edge Node | Optical Networking Line Card |
|
Use Scenario: Battery-powered wireless sensor node with 10-year target lifetime using CR2032 coin cell. IC Role / Device Role / Timing Role: Ultra-low-IQ DC/DC converter operating in Burst Mode® to extend battery life while maintaining wake-up responsiveness. Use Value: 80µA quiescent current in sleep state enables >12-year theoretical battery life at 10µA average load; PGOOD enables precise power-state coordination. |
Use Scenario: Point-of-load regulation for 10Gbps transceiver ASIC requiring low-noise 1.0V supply with EMI compliance. IC Role / Device Role / Timing Role: Synchronized 2MHz buck converter locked to system clock to avoid beat frequencies in dense line-card layouts. Use Value: MODE/SYNC pin accepts external 2MHz clock with ±20% tolerance - eliminates switching noise peaks in sensitive RF front-end bands. |
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 | 1.8V fixed output, 4MHz switching, 650mV–5.5V input, 2A rating, 18µA IQ in DCM | Higher frequency enables smaller passives but lacks Burst Mode®; no side-wettable flanks or AEC-Q100 qualification | Select for space-constrained consumer electronics where 1.8V output matches SoC requirements and automotive qualification is unnecessary. |
| MP2143GJ-Z | 1.0V fixed output, 2MHz, 2.5V–5.5V input, 2A, 30µA IQ in skip mode, QFN-10 (3mm×3mm) | Larger 3mm×3mm package, no side-wettable flanks, lower thermal performance (θJA = 60°C/W), no AEC-Q100 support | Select for cost-sensitive industrial applications where 2mm×2mm footprint and AOI capability are non-critical and ambient temperature stays below 85°C. |
Compared with TPS6286418RTER and MP2143GJ-Z, the LTC3302ARUCM#TRPBF uniquely combines AEC-Q100 qualification, side-wettable flanks for automotive AOI, Burst Mode® with 80µA IQ, and 2mm×2mm FCQFN packaging - making it the only choice for safety-critical, space-limited, and long-life automotive or medical edge devices requiring 1.0V POL regulation.
Availability
LTC3302ARUCM#TRPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive ADAS modules, and industrial IoT edge nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LTC3302ARUCM#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.
The LTC3302 product line delivers ultra-compact, high-efficiency synchronous buck regulators for point-of-load applications demanding minimal PCB area, low quiescent current, and robust protection - especially in automotive, optical networking, and portable electronics.
FAQ
What is the output voltage setting of the LTC3302ARUCM#TRPBF?
The LTC3302ARUCM#TRPBF is a factory-programmed fixed-output variant delivering precisely 1.0V. This eliminates external feedback resistors and guarantees ±1% output accuracy over the full –40°C to +125°C ambient temperature range, as confirmed in the Electrical Characteristics table (Rev. 0 datasheet, Page 3).
Does the LTC3302ARUCM#TRPBF support external clock synchronization?
Yes, the LTC3302ARUCM#TRPBF supports external clock synchronization via its MODE/SYNC pin (Pin 8). When driven with a square wave within ±20% of the nominal 2MHz frequency, the internal oscillator locks to the external source and the device operates in forced continuous mode, as detailed in the "Synchronizing the Oscillator to an External Clock" section (Page 11).
What package type and dimensions does the LTC3302ARUCM#TRPBF use?
The LTC3302ARUCM#TRPBF uses a 12-pin Flip-Chip QFN (FCQFN) package measuring 2.0mm × 2.0mm × 0.75mm with exposed thermal pad and side-wettable flanks. This package is explicitly listed in the Order Information table (Page 2) and enables automated optical inspection - a key requirement for AEC-Q100-compliant automotive production.
How does the LTC3302ARUCM#TRPBF achieve low quiescent current in light-load conditions?
The LTC3302ARUCM#TRPBF achieves 80µA quiescent current in Burst Mode® operation by entering a deep-sleep state where most internal circuitry is powered down. During sleep, the output capacitor supplies the load until VOUT drops below regulation, triggering a burst of switching cycles - a behavior verified in Figure 3302 G20 (Page 6) and the Features list (Page 1).
Is the LTC3302ARUCM#TRPBF qualified for automotive applications?
Yes, the LTC3302ARUCM#TRPBF is AEC-Q100 qualified for automotive applications. The datasheet explicitly states "AEC-Q100 Qualified for Automotive Applications" in the Features section (Page 1) and lists automotive-grade ordering options (e.g., LTC3302AJUCM#WTRPBF) with #W suffix in the Order Information table (Page 2), confirming qualification scope includes the R-grade variant.
LTC3302ARUCM#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:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TQFN (2x2)
LTC3302ARUCM#TRPBF FAQ
1.How can I place an order for LTC3302ARUCM#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3302ARUCM#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 LTC3302ARUCM#TRPBF reliable?
The price and inventory of LTC3302ARUCM#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3302ARUCM#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3302ARUCM#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3302ARUCM#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3302ARUCM#TRPBF?
LTC3302ARUCM#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3302ARUCM#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 LTC3302ARUCM#TRPBF?
For technical support, including LTC3302ARUCM#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3302ARUCM#TRPBF requirements.
6.How does Aetrix verify that LTC3302ARUCM#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3302ARUCM#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 LTC3302ARUCM#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3302ARUCM#TRPBF?
All LTC3302ARUCM#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3302ARUCM#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 LTC3302ARUCM#TRPBF part is unused and in its original packaging.
Return procedure for LTC3302ARUCM#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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