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Analog Devices Inc. LTC3130EUDC#PBF
- Part No.:
- LTC3130EUDC#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
LTC3130EUDC#PBF.pdf
- Description:
- IC REG BUCK BST ADJ 600MA 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,189
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Product details
Overview
LTC3130EUDC#PBF from Analog Devices (formerly Linear Technology) is a monolithic, current-mode buck-boost DC/DC converter optimized for ultra-low-power, wide-input applications. It delivers up to 600mA output current, supports input voltages from 2.4V to 25V (or down to 0.6V with EXTVCC), regulates output from 1V to 25V, and achieves just 1.6µA quiescent current in Burst Mode® operation - enabling multi-year battery life in remote sensors and solar-powered instrumentation.
For engineers reviewing the LTC3130EUDC#PBF datasheet, LTC3130EUDC#PBF pinout, LTC3130EUDC#PBF application, or LTC3130EUDC#PBF equivalent, key selection criteria include its 1.2MHz ultralow-noise PWM architecture, programmable maximum power point control (MPPC) for photovoltaic sources, accurate RUN pin threshold (1.05V typ), and thermally enhanced 20-lead 3mm × 4mm QFN package with exposed ground pad.
Technical Context
The LTC3130EUDC#PBF employs a synchronous four-switch buck-boost topology with integrated 0.35Ω NMOS power switches, enabling regulation where VOUT is above, below, or equal to VIN. Its current-mode control loop uses internal compensation and soft-start (12ms typical), eliminating external loop components while maintaining stability across wide load and input ranges.
Burst Mode® operation dynamically disables switching during light loads to minimize idle power draw, while the MPPC function monitors input voltage via an external resistor divider and adjusts inductor current to maintain optimal source operating point - critical for energy harvesting from low-power, high-impedance sources like small PV panels or thermoelectric generators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.4V to 25V (startup); extends to 0.6V when EXTVCC ≥ 3.15V - enables operation from single-cell Li-ion or weak energy harvesters. |
| Output Voltage Range | 1.0V to 25V (adjustable via FB pin) - supports wide-range system rail generation without external DAC or LDO post-regulation. |
| Quiescent Current (Burst Mode) | 1.6µA typical at VIN = 12V, VOUT = 5V - reduces battery drain to <1.4µAh/day, extending shelf life in always-on IoT nodes. |
| Switching Frequency | 1.2MHz fixed (±20%) - allows use of compact 2.2µH–10µH inductors and ceramic capacitors, minimizing solution footprint. |
| Peak Efficiency | 95% at 600mA load - achieved with low RDS(ON) (0.35Ω) internal MOSFETs and optimized gate drive, reducing thermal stress in sealed enclosures. |
| MPPC Reference Voltage | 1.00V ±50mV - provides precise, temperature-stable setpoint for maximum power extraction from variable-output sources. |
| Shutdown IQ | 500nA - ensures negligible leakage during deep sleep, critical for wake-on-event architectures with microamp-level wake sources. |
Pinout & Package
The LTC3130EUDC#PBF is housed in a thermally enhanced 20-lead 3mm × 4mm plastic QFN package with exposed ground pad (Pin 21), requiring soldering to PCB ground plane for thermal and electrical performance. Pin count and layout match the LTC3130 family's standardized UDC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST1 / BST2 | Bootstrap supply for high-side NMOS gate drivers | Must be connected via 22nF ceramic capacitor to SW1/SW2 respectively; critical for full gate drive voltage and low RDS(ON) performance. |
| PVIN / VIN | Main power input / VCC regulator input | PVIN supplies converter power stage; VIN powers internal 4V LDO - decoupling with ≥4.7µF ceramic required on each. |
| RUN | Enable comparator input | 1.05V rising threshold enables predictable startup; hysteresis (100mV) prevents chatter near UVLO; ties directly to VIN for always-on operation. |
| MPPC | Maximum Power Point Control input | Accepts resistor-divider voltage from PVIN; servo action maintains input at programmed voltage (e.g., 5V for panel VMP) by modulating inductor current. |
| MODE | Operation mode select | Ground = Burst Mode® (ultra-low IQ); VCC = fixed-frequency PWM (low-noise, constant frequency). |
| FB / VS1/VS2 | Feedback input / Output voltage select (LTC3130-1 only) | LTC3130EUDC#PBF uses FB pin for adjustable output; VS1/VS2 are not functional on this variant - pins are NC or unused. |
| PGOOD | Open-drain power-good indicator | Pulls low when VOUT deviates >5% from target; requires external pull-up; asserts during UVLO or shutdown if VIN/EXTVCC present. |
| GND / PGND / Exposed Pad | Analog/digital/power ground | Exposed pad (Pin 21) is GND and must be soldered to PCB ground plane; separates signal and power return paths to reduce noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-noise 1.2MHz PWM | Minimizes EMI and enables use of tiny inductors (e.g., 2.2µH) and low-ESR ceramic caps - reduces BOM cost and board area by >30% vs. lower-frequency alternatives. |
| Programmable MPPC | Enables direct connection to photovoltaic panels or TEGs without external MPPT controller - eliminates discrete op-amp/comparator circuitry and associated calibration drift. |
| Accurate RUN threshold (1.05V) | Allows precise, resistor-divider-based VIN undervoltage lockout - eliminates need for external supervisor IC in battery-powered systems with tight voltage margins. |
| Integrated soft-start (12ms) | Prevents inrush current and output overshoot during startup - removes requirement for external soft-start capacitor or sequencing circuitry. |
| Thermally enhanced QFN | θJA = 52°C/W with proper pad soldering - sustains 600mA continuous output at +85°C ambient without forced air or heatsink. |
Applications
| Solar-Powered Remote Sensor Node | Low-Power Military Radio Transceiver |
|---|---|
Use Scenario: A wireless environmental sensor powered by a 2.5W monocrystalline PV panel in variable-light outdoor deployment, requiring stable 3.3V for MCU and RF transceiver. IC Role / Device Role / Timing Role: Primary buck-boost regulator with MPPC actively tracking panel VMP to maximize harvested energy under partial shading or low irradiance. Use Value: Delivers >90% efficiency at 10–100mA loads while drawing only 1.6µA in dark standby - enabling >5-year battery-free operation with minimal panel size. |
Use Scenario: Handheld tactical radio with dual Li-ion cells (6–8.4V) powering 1.8V digital baseband and 5V RF front-end, requiring seamless voltage regulation during rapid load transients. IC Role / Device Role / Timing Role: Single-chip dual-rail power supply generating both 1.8V (via LDO post-regulation) and 5V (direct buck-boost output) from shared input. Use Value: Maintains regulated output during 10mA→600mA step loads with <100mV droop and fast recovery (<500µs), ensuring uninterrupted digital signal integrity and RF spectral purity. |
| Long-Life Battery Instrumentation | Industrial Wireless Condition Monitor |
Use Scenario: Portable gas analyzer using coin-cell batteries (3V), needing 5V for electrochemical sensor bias and 3.3V for microcontroller, with 10-year shelf-life requirement. IC Role / Device Role / Timing Role: Ultra-low-IQ buck-boost converter supplying both rails, entering 500nA shutdown when host MCU is asleep. Use Value: Reduces average system current to <2µA in sleep mode - extending coin-cell life beyond 10 years while supporting instant wake-up via RUN pin assertion. |
Use Scenario: Vibration sensor mounted on rotating machinery, powered by energy harvester (piezoelectric or inductive), requiring reliable 3.3V output despite highly variable input (0.8–5V). IC Role / Device Role / Timing Role: Wide-input buck-boost regulator with EXTVCC input accepting harvester output directly, eliminating pre-boost stage. Use Value: Starts regulation from as low as 0.6V input (with EXTVCC), sustaining operation down to 1V VIN - capturing >95% of available harvester energy across operational envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX77827BEWC+T | Higher IQ (2.5µA), narrower input range (2.5V–16V), no MPPC, 2.2MHz switching | Lacks photovoltaic optimization; better suited for USB-powered portable devices than energy harvesting | Select when higher switching frequency and smaller magnetics are prioritized over ultra-low IQ and MPPC capability |
| TPS63051RWFR | Lower max output current (400mA), wider input (1.8V–5.5V), no MPPC, 2.5µA IQ, integrated load switch | Optimized for single-cell Li-ion systems; lacks wide-VIN capability and MPPC for solar/TEG inputs | Choose for space-constrained consumer electronics where input is tightly bounded and load switching is needed |
Compared with MAX77827BEWC+T and TPS63051RWFR, the LTC3130EUDC#PBF uniquely combines sub-2µA quiescent current, 0.6V–25V input flexibility, and hardware-based MPPC - making it the only option capable of autonomous, long-duration operation from weak, variable energy sources without external support circuitry.
Availability
LTC3130EUDC#PBF is available at Aetrix Electronics and suitable for solar panel post-regulators, low-power sensor nodes, and portable military radios requiring stable component supply across extended production lifecycles and temperature extremes (–40°C to 125°C).
Supply support for LTC3130EUDC#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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, automotive, communications, and aerospace markets.
The LTC3130 product line was designed specifically for ultra-low-power, wide-input DC/DC conversion in energy-constrained and energy-harvesting applications - emphasizing quiescent current minimization, input voltage adaptability, and autonomous source optimization.
FAQ
What is the minimum input voltage required to start up the LTC3130EUDC#PBF?
The LTC3130EUDC#PBF starts up from as low as 2.4V when powered solely from VIN. However, with EXTVCC enabled (≥3.15V), startup is guaranteed down to 0.6V. This dual-path architecture allows reliable operation from weak sources like partially discharged batteries or low-output energy harvesters - a key enabler for maintenance-free remote sensing.
Does the LTC3130EUDC#PBF support fixed output voltages without external resistors?
No - the LTC3130EUDC#PBF is the adjustable version of the family and requires an external resistor divider on the FB pin to set output voltage between 1.0V and 25V. The LTC3130-1 variant (e.g., LTC3130EUDC-1#PBF) provides four factory-fixed outputs (1.8V/3.3V/5.0V/12V) via VS1/VS2 pins. Using the wrong variant will result in incorrect regulation or failure to regulate.
How does the MPPC function work in the LTC3130EUDC#PBF?
The LTC3130EUDC#PBF's MPPC pin accepts a resistor divider from PVIN. When the divided voltage falls below 1.00V (typ), the controller reduces inductor current to raise PVIN back to the setpoint - effectively maximizing power extraction from non-ideal sources like solar panels. This closed-loop servo operates independently of output regulation, enabling true autonomous MPPT without firmware or external controllers.
Can the LTC3130EUDC#PBF operate in fixed-frequency PWM mode?
Yes - the MODE pin selects between Burst Mode® (ground) and fixed-frequency PWM (tied to VCC). In PWM mode, the LTC3130EUDC#PBF operates continuously at 1.2MHz regardless of load, delivering lower output ripple and predictable EMI spectrum - ideal for noise-sensitive analog or RF circuits where burst-mode switching artifacts must be avoided.
What thermal design considerations apply to the LTC3130EUDC#PBF's QFN package?
The LTC3130EUDC#PBF's 20-lead 3mm × 4mm QFN requires soldering of the exposed thermal pad (Pin 21) to a solid PCB ground plane. Failure to do so increases θJA from 52°C/W to >100°C/W, risking thermal shutdown at >300mA loads. A minimum 4×4 array of thermal vias (0.3mm diameter) beneath the pad is recommended to ensure reliable 600mA operation at +85°C ambient.
LTC3130EUDC#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.4V
- Voltage - Input (Max):
- 25V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 25V
- Current - Output:
- 600mA
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x4)
LTC3130EUDC#PBF FAQ
1.How can I place an order for LTC3130EUDC#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3130EUDC#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 LTC3130EUDC#PBF reliable?
The price and inventory of LTC3130EUDC#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3130EUDC#PBF is usually 5 days.
3.What payment methods are accepted for LTC3130EUDC#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3130EUDC#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3130EUDC#PBF?
LTC3130EUDC#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3130EUDC#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 LTC3130EUDC#PBF?
For technical support, including LTC3130EUDC#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3130EUDC#PBF requirements.
6.How does Aetrix verify that LTC3130EUDC#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3130EUDC#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 LTC3130EUDC#PBF meets industry standards.
7.What is the process for return or replacement of LTC3130EUDC#PBF?
All LTC3130EUDC#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3130EUDC#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 LTC3130EUDC#PBF part is unused and in its original packaging.
Return procedure for LTC3130EUDC#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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