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Analog Devices Inc. LTC3130IUDC-1#PBF
- Part No.:
- LTC3130IUDC-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
LTC3130IUDC-1#PBF.pdf
- Description:
- IC REG BUCK BST PROG 600MA 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,686
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Product details
Overview
LTC3130IUDC-1#PBF from Analog Devices (formerly Linear Technology) is a 25V, 600mA buck-boost DC/DC converter with fixed-output voltage selection, 1.6µA quiescent current in Burst Mode®, 1.2MHz ultralow-noise PWM operation, and integrated maximum power point control (MPPC). It regulates VOUT above, below, or equal to VIN and is used in solar panel post-regulators, low-power sensors, and battery-operated instrumentation.
For engineers reviewing the LTC3130IUDC-1#PBF datasheet, LTC3130IUDC-1#PBF pinout, LTC3130IUDC-1#PBF application, or LTC3130IUDC-1#PBF equivalent, key selection criteria include its four-pin-selectable output voltages (1.8V/3.3V/5.0V/12V), EXTVCC support for sub-1V start-up, thermal shutdown, power good indicator, and MPPC capability for photovoltaic energy harvesting.
Technical Context
The LTC3130IUDC-1#PBF employs a current-mode, monolithic buck-boost architecture with dual NMOS switches (SW1/SW2) and two bootstrap supplies (BST1/BST2) enabling seamless transition between buck, boost, and buck-boost modes. Its internal 4V LDO powers control circuitry from VIN or EXTVCC, supporting operation down to 0.6V input when EXTVCC > 3.15V.
It integrates programmable MPPC via a precision 1.00V reference on the MPPC pin, accurate RUN comparator threshold (1.05V typ), soft-start (12ms), and loop compensation. The MODE pin selects between fixed-frequency PWM or automatic Burst Mode® operation, while VS1/VS2 pins configure one of four factory-trimmed output voltages without external feedback resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 0.6V to 25V (with EXTVCC ≥ 3.15V); enables ultra-low-voltage start-up from energy-harvesting sources |
| VOUT Options | 1.8V, 3.3V, 5.0V, or 12V - selected by VS1/VS2 logic states; eliminates external FB resistor network |
| IQ (Burst Mode) | 1.6µA typical - extends battery life in always-on, intermittent-load applications like remote sensors |
| Switching Frequency | 1.2MHz ±20% - allows use of compact 6.8µH inductors and ceramic capacitors, minimizing solution footprint |
| Output Current | 600mA continuous in buck mode; peak inductor current limit up to 1.3A supports transient loads |
| MPPC Reference | 1.00V ±50mV - enables precise servo control of input voltage for maximum power extraction from PV panels |
| Thermal Shutdown | Activates at TJ = 165°C - protects device during overload or poor PCB thermal design |
Pinout & Package
Package: 20-lead (3mm × 4mm) plastic QFN with exposed thermal pad (Pin 21 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 7–8, Pin 21) | Ground reference and thermal path | Exposed pad (Pin 21) must be soldered to PCB ground plane; provides primary thermal conduction path (θJC = 6.8°C/W) |
| VIN (Pin 3) | Main input supply for VCC regulator | Supplies internal 4V LDO; requires ≥1µF ceramic decoupling; minimum start-up voltage = 2.4V (no EXTVCC) |
| EXTVCC (Pin 12) | Secondary VCC input | Enables operation from VIN as low as 0.6V; must be ≥3.15V to activate; reduces VIN quiescent draw in buck configurations |
| RUN (Pin 4) | Enable/control input | Threshold = 1.05V (rising); hysteresis = 100mV; ties to VIN for always-on operation; enables accurate VIN UVLO programming |
| MODE (Pin 11) | Operating mode select | Low = Burst Mode® (ultra-low IQ); High = fixed-frequency PWM (low-noise, predictable ripple) |
| VS1 / VS2 (Pins 10 / 9) | Fixed VOUT selection inputs | Logic-level inputs (0V/VCC) that configure one of four factory-trimmed outputs per Table 1; no external resistors needed |
| MPPC (Pin 6) | Maximum Power Point Control input | Compares input voltage to 1.00V reference; drives inductor current to maintain programmed input voltage - critical for solar harvesters |
| PGOOD (Pin 13) | Power-good status indicator | Open-drain output asserts low when VOUT drops >5% below regulation; requires external pull-up for system monitoring |
| VOUT (Pin 14) | Regulated output | Delivers up to 600mA; requires ≥4.7µF ceramic output capacitor; short-circuit protected via current limiting |
| SW1 / SW2 (Pins 20 / 15) | Power switch nodes | Connect to opposite ends of power inductor; require short, wide PCB traces to minimize EMI and conduction loss |
| BST1 / BST2 (Pins 1 / 16) | Bootstrap supplies for high-side NMOS gates | Each requires dedicated 22nF ceramic capacitor from BSTx to corresponding SWx; placement critical for gate drive integrity |
Key Features
| Feature | Design Value |
|---|---|
| Four-pin-selectable VOUT | 1.8V/3.3V/5.0V/12V factory-trimmed outputs eliminate external feedback resistors and calibration effort |
| Sub-1V start-up capability | Operates from VIN as low as 0.6V when EXTVCC ≥ 3.15V - enables direct connection to single-cell LiFePO₄ or thin-film batteries |
| 1.6µA Burst Mode® IQ | Extends shelf life and runtime in battery-powered IoT sensors where load duty cycle is <0.1% |
| Integrated MPPC | 1.00V reference with <20nA input bias enables high-accuracy, low-component-count solar MPPT without microcontroller |
| Thermally enhanced QFN | 3mm × 4mm package with exposed GND pad achieves θJA = 52°C/W - supports 600mA continuous output at 85°C ambient |
| Accurate RUN threshold | 1.05V ±40mV enable threshold with 100mV hysteresis ensures reliable, noise-immune turn-on across temperature |
Applications
| Solar Panel Post-Regulator | Low-Power Wireless Sensor Node |
|---|---|
|
Use Scenario: Regulates variable output of small photovoltaic panels (e.g., 2–5V, 10–100mA) into stable 3.3V for BLE/Wi-Fi MCU and sensor ICs. IC Role / Device Role / Timing Role: Buck-boost regulator with MPPC actively tracks panel's maximum power point while delivering regulated VOUT. Use Value: Increases harvested energy yield by >15% vs. fixed-input regulators; eliminates need for external MPPT controller IC or firmware. |
Use Scenario: Powers intermittently active environmental sensors (temperature/humidity/pressure) powered by coin-cell or thin-film batteries. IC Role / Device Role / Timing Role: Primary power management IC providing 3.3V rail with ultra-low sleep current and fast wake-up response. Use Value: 1.6µA quiescent current extends 200mAh coin-cell life to >10 years in 1-sleep/60s-active duty cycle; soft-start prevents brownout during wake-up. |
| Portable Military Radio Subsystem | Long-Life Battery-Operated Instrument |
|
Use Scenario: Supplies 5.0V to RF front-end and baseband ASIC in handheld radios operating from 2–3 alkaline cells (2.4–4.8V). IC Role / Device Role / Timing Role: Wide-input buck-boost converter maintaining regulation as battery discharges from 4.8V to 2.4V. Use Value: Eliminates need for separate buck and boost stages; 95% peak efficiency preserves battery capacity; PGOOD enables system-level health monitoring. |
Use Scenario: Powers precision analog front-end (ADC, op-amps, reference) and low-power MCU in portable test equipment with 10+ year field deployment. IC Role / Device Role / Timing Role: Primary DC/DC converter delivering stable 12V output from aging primary lithium thionyl chloride (LiSOCl₂) battery. Use Value: 12V fixed output avoids drift from aging feedback resistors; thermal shutdown prevents field failure under abnormal load conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | 3.2V–20V input; adjustable VOUT only (no fixed options); 2.5µA IQ; no MPPC; 2.5mm × 2.5mm QFN-10 | Lacks pin-selectable outputs and MPPC - requires external circuitry for solar harvesting or fixed-rail simplicity | Choose for space-constrained designs needing adjustable output and lower BOM count than discrete FB networks |
| MAX77827AEWA+T | 2.5V–16V input; 1.8V/3.3V/5.0V fixed outputs; 2.3µA IQ; no MPPC; 2mm × 2mm WLP-20 | Smaller package but lacks MPPC and sub-1V start-up; fixed outputs limited to three values | Choose for ultra-compact wearables where solar harvesting is unnecessary and board area is premium |
Compared with TPS63020DSJR and MAX77827AEWA+T, the LTC3130IUDC-1#PBF uniquely combines pin-selectable fixed outputs, integrated MPPC, and sub-1V start-up - making it optimal for solar-powered and long-life battery systems where reliability and minimal external components are critical.
Availability
LTC3130IUDC-1#PBF is available at Aetrix Electronics and suitable for solar panel post-regulators, low-power wireless sensor nodes, and portable military radio subsystems requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature range (–40°C to +125°C).
Supply support for LTC3130IUDC-1#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 and maintains full product support, datasheets, and application expertise for legacy Linear parts including the LTC3130 family.
The LTC3130 product line targets ultra-low-power, wide-input-range DC/DC conversion for energy harvesting, battery longevity, and harsh-environment applications - emphasizing quiescent current, start-up robustness, and integrated power management features.
FAQ
What is the minimum input voltage required for LTC3130IUDC-1#PBF to start switching?
The LTC3130IUDC-1#PBF starts switching at VIN = 2.4V when powered solely from VIN. With EXTVCC ≥ 3.15V applied, start-up is possible from VIN as low as 0.6V - enabling operation directly from partially discharged single-cell batteries or low-voltage energy harvesters. This behavior is confirmed in the Electrical Characteristics table under "VIN Start-Up Voltage" with EXTVCC > 3.15V condition.
How do I configure the LTC3130IUDC-1#PBF for 5.0V output?
To configure the LTC3130IUDC-1#PBF for 5.0V output, tie VS1 to GND and VS2 to VCC (or logic-high signal ≥1.1V), per Table 1 in the datasheet. No external resistors or programming are required - the 5.0V output is factory-trimmed and specified over temperature (±3% from –40°C to +125°C). The LTC3130IUDC-1#PBF delivers this voltage with built-in loop compensation and soft-start.
Does the LTC3130IUDC-1#PBF support maximum power point tracking (MPPT) for solar panels?
Yes, the LTC3130IUDC-1#PBF includes integrated Maximum Power Point Control (MPPC) via the MPPC pin, which compares an external resistor-divider voltage to an internal 1.00V reference. When the divider voltage falls below ~1.0V, the converter reduces inductor current to servo VIN to the programmed voltage - enabling autonomous MPPT without external microcontroller or dedicated IC. This function is explicitly documented in the Features, Description, and PIN FUNCTIONS sections.
What is the purpose of the EXTVCC pin on the LTC3130IUDC-1#PBF?
The EXTVCC pin on the LTC3130IUDC-1#PBF provides a secondary input to the internal 4V VCC regulator. When driven with 3.15V–25V (e.g., from VOUT or a separate supply), it powers the IC's internal circuitry, reducing VIN quiescent current and enabling operation from VIN as low as 0.6V. If unused, EXTVCC must be grounded. Its quiescent current in Burst Mode is 1.6µA - identical to VIN IQ - ensuring no penalty for using this feature.
Is the LTC3130IUDC-1#PBF pin-compatible with other variants in the LTC3130 family?
Yes, the LTC3130IUDC-1#PBF shares identical 20-lead 3mm × 4mm QFN packaging and pinout with LTC3130IUDC#PBF, LTC3130EUDC-1#PBF, and LTC3130EUDC#PBF. All share the same pin functions, absolute maximum ratings, and thermal pad configuration (Pin 21 = GND). Differences are limited to temperature grade (I-grade = –40°C to +125°C) and internal configuration (LTC3130-1 has fixed-VOUT logic; standard LTC3130 uses FB pin).
LTC3130IUDC-1#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:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.4V
- Voltage - Input (Max):
- 25V
- Voltage - Output (Min/Fixed):
- 1.8V, 3.3V, 5V, 12V
- Voltage - Output (Max):
- -
- 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)
LTC3130IUDC-1#PBF FAQ
1.How can I place an order for LTC3130IUDC-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3130IUDC-1#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 LTC3130IUDC-1#PBF reliable?
The price and inventory of LTC3130IUDC-1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3130IUDC-1#PBF is usually 5 days.
3.What payment methods are accepted for LTC3130IUDC-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3130IUDC-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3130IUDC-1#PBF?
LTC3130IUDC-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3130IUDC-1#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 LTC3130IUDC-1#PBF?
For technical support, including LTC3130IUDC-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3130IUDC-1#PBF requirements.
6.How does Aetrix verify that LTC3130IUDC-1#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3130IUDC-1#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 LTC3130IUDC-1#PBF meets industry standards.
7.What is the process for return or replacement of LTC3130IUDC-1#PBF?
All LTC3130IUDC-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3130IUDC-1#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 LTC3130IUDC-1#PBF part is unused and in its original packaging.
Return procedure for LTC3130IUDC-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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