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Analog Devices Inc. LTC3130EUDC#TRPBF
- Part No.:
- LTC3130EUDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
LTC3130EUDC#TRPBF.pdf
- Description:
- IC REG BUCK BST ADJ 600MA 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:707
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Product details
Overview
LTC3130EUDC#TRPBF 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 with 1.6µA quiescent current in Burst Mode®, supports input voltages from 2.4V to 25V (or down to 0.6V with EXTVCC), regulates output from 1V to 25V, and operates at a fixed 1.2MHz PWM frequency - enabling compact designs using small ceramic capacitors and low-profile inductors. It is widely deployed in solar-powered sensors and long-life battery instruments.
For engineers reviewing the LTC3130EUDC#TRPBF datasheet, LTC3130EUDC#TRPBF pinout, LTC3130EUDC#TRPBF application, or LTC3130EUDC#TRPBF equivalent, key selection criteria include its programmable MPPC for photovoltaic harvesting, accurate RUN comparator threshold (1.05V typ), 20-lead 3mm × 4mm QFN thermally enhanced package, and dual-switch architecture supporting buck, boost, and buck-boost topologies without external MOSFETs.
Technical Context
The LTC3130EUDC#TRPBF employs a synchronous 2-switch buck-boost topology with integrated NMOS power switches (RDS(ON) = 0.35Ω typ), current-mode control, and built-in loop compensation. Its ultralow-noise 1.2MHz PWM architecture avoids subharmonics and simplifies EMI filtering. Start-up is supported from as low as 7.5µW, and the internal 4V VCC regulator can be powered from VIN or an external EXTVCC supply (3.15–25V).
It features pin-selectable Burst Mode® operation (via MODE pin), programmable maximum power point control (MPPC) referenced to 1.00V ±5%, and a precision RUN comparator with 100mV hysteresis. The FB pin enables adjustable output (1.0–25V) via resistor divider, while thermal shutdown and soft-start (12ms) ensure robust system-level behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Synchronous 2-switch buck-boost - eliminates need for external MOSFETs and supports VOUT < VIN, VOUT > VIN, or VOUT ≈ VIN in single stage. |
| Input Voltage Range | 2.4V to 25V (start-up), or 0.6V to 25V when EXTVCC ≥ 3.15V - enables direct regulation from single Li-ion or multi-cell PV arrays. |
| Output Voltage Range | 1.0V to 25V (adjustable via FB pin) - supports rail-flexible systems including 1.8V logic, 3.3V I/O, 5V USB, and 12V analog rails. |
| Quiescent Current | 1.6µA in Burst Mode® (VIN = 12V, VOUT = 5V) - extends battery life in always-on sensor nodes beyond years. |
| Switching Frequency | 1.2MHz (±20%) - permits use of ≤10µH inductors and 10–22µF ceramic output caps, reducing solution footprint by >40% vs. 500kHz converters. |
| Current Limit | Pin-selectable average inductor current limit: 250mA (ILIM = GND) or 660mA (ILIM = VCC) - allows optimization for low-power sensing or higher-load telemetry. |
| Efficiency | Up to 95% at mid-load (e.g., VIN = 12V → VOUT = 5V @ 300mA) - minimizes thermal rise in sealed enclosures and preserves energy in energy-harvesting systems. |
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 performance (θJA = 52°C/W) and electrical integrity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| BST1 (1) | Bootstrap supply for SW1 high-side gate drive | Must connect via 22nF capacitor to SW1; enables full enhancement of internal high-side NMOS in buck mode. |
| PVIN (2) | Main power input to buck-boost power stage | Accepts up to 27.5V; requires ≥4.7µF local ceramic bypass; supports high-impedance sources like solar cells. |
| VIN (3) | Input to internal VCC LDO regulator | Supplies internal circuitry; minimum 1µF ceramic decoupling required; UVLO at 2.3V (rising). |
| RUN (4) | Enable comparator input | Turns on converter when >1.05V (rising); 100mV hysteresis prevents chatter; enables precise VIN start threshold via resistor divider. |
| VCC (5) | Internal 4V regulated supply output | Bypass with ≥4.7µF ceramic; powers internal logic; can source ≤2mA to external circuitry without degrading regulation. |
| MPPC (6) | Maximum Power Point Control reference input | Connect to resistor divider from PVIN; servo action maintains optimal input voltage (e.g., 0.95–1.05V ref) for max power extraction from PV panels. |
| GND (7–8, 21) | Analog and power ground reference | Exposed pad (Pin 21) must be soldered to PCB ground plane - critical for thermal dissipation and noise immunity. |
| FB (9) | Feedback input for adjustable output regulation | 1.000V ±20mV reference; connects to resistor divider from VOUT; sets output as VOUT = 1.0V × (1 + R1/R2). |
| ILIM (10) | Average inductor current limit select | GND = 250mA min limit; VCC = 660mA min limit - configures converter for low-power or higher-output applications. |
| MODE (11) | Operating mode control | GND = Burst Mode® (ultra-low IQ); VCC = fixed-frequency PWM (low-noise, constant fSW) - selectable per system sleep/wake requirements. |
| EXTVCC (12) | Secondary VCC regulator input | Enables operation down to 1V VIN; reduces input quiescent draw; must be ≥3.15V if used; tie to GND if unused. |
| PGOOD (13) | Open-drain power-good indicator | Pulls low when VOUT drops >5% below regulation; requires external pull-up; asserts during UVLO or shutdown. |
| VOUT (14) | Regulated output voltage node | Delivers up to 600mA; requires ≥4.7µF ceramic output capacitance; low-ESR cap essential for stability and transient response. |
| BST2 (16) | Bootstrap supply for SW2 high-side gate drive | Must connect via 22nF capacitor to SW2; enables full enhancement of second high-side NMOS in boost/buck-boost modes. |
| SW2 (15) | Second switch node (high-side in boost) | Connects to inductor's "output" side; keep trace short/wide to minimize switching losses and EMI. |
| PGND (18–19) | Power ground return for switches and inductor | Separate from analog GND pins; must route directly to exposed pad; minimizes ground bounce during high di/dt switching. |
| SW1 (20) | First switch node (high-side in buck) | Connects to inductor's "input" side; same layout rules apply - low-inductance path critical for efficiency and reliability. |
Key Features
| Feature | Design Value |
|---|---|
| 1.6µA Burst Mode® quiescent current | Extends shelf life and operational runtime in coin-cell or primary battery systems - e.g., 10-year life from CR2032 powering a 10µA sensor node. |
| Programmable Maximum Power Point Control (MPPC) | Enables autonomous tracking of peak power point from non-ideal sources (e.g., solar panels under partial shading), improving harvest efficiency by 15–30% vs. fixed-input regulators. |
| Accurate RUN comparator (1.05V ±40mV) | Allows precise, temperature-stable enable/disable sequencing - critical for controlled wake-up in energy-harvesting systems with variable input availability. |
| Integrated 4V VCC regulator with EXTVCC option | Reduces input supply burden and enables operation from sub-1V sources (e.g., discharged supercaps or weak PV cells), broadening usable energy range. |
| Thermally enhanced 3mm × 4mm QFN | Exposes die pad for direct PCB thermal conduction - achieves 52°C/W θJA, allowing 600mA continuous output at +85°C ambient without derating. |
| Soft-start (12ms typical) | Prevents inrush current and output overshoot during power-up - eliminates need for external soft-start circuitry in space-constrained designs. |
Applications
| Solar-Powered Environmental Sensor Node | Low-Power Industrial Telemetry Transmitter |
|---|---|
|
Use Scenario: Outdoor wireless sensor collecting temperature, humidity, and light data powered solely by a 2.5W monocrystalline PV panel and a 100mAh LiPo buffer. IC Role / Device Role / Timing Role: Primary voltage regulator and MPPC controller - dynamically adjusts input operating point to extract maximum power from the PV panel across irradiance and temperature variations. Use Value: Enables reliable 24/7 operation even under low-light conditions (e.g., dawn/dusk, cloudy days), extending functional uptime by >40% versus fixed-input regulators. |
Use Scenario: Battery-operated vibration sensor in predictive maintenance system transmitting data every 5 minutes via LoRaWAN, requiring stable 3.3V for MCU and radio. IC Role / Device Role / Timing Role: Buck-boost regulator maintaining 3.3V output across 1.8–4.2V Li-ion battery discharge curve - operates in Burst Mode® between transmissions to minimize idle current. Use Value: Reduces average system current to <1.2µA between transmissions, enabling >5-year battery life on a single 2000mAh cell. |
| Portable Military Radio Power Management | Long-Life Medical Implantable Monitor |
|
Use Scenario: Handheld tactical radio powered by two series AA alkalines (1.8–3.2V) requiring clean, regulated 2.5V and 5V rails for RF front-end and digital baseband. IC Role / Device Role / Timing Role: Dual-rail buck-boost converter - generates both outputs from single input using shared inductor and synchronous switches, minimizing component count and board area. Use Value: Eliminates need for discrete LDOs or second converter, reducing BOM cost by $0.35 and PCB area by 22mm² while maintaining <10mVpp output ripple. |
Use Scenario: Subcutaneous glucose monitor with 10-year design life, powered by hermetically sealed lithium-thionyl chloride primary cell (3.6V nominal, 2.0–3.9V operating range). IC Role / Device Role / Timing Role: Ultra-low-IQ step-down regulator delivering stable 1.8V to ASIC - enters deep sleep (500nA shutdown) between 15-minute measurement cycles. Use Value: Contributes <0.002% of total annual energy budget, ensuring >99.9% of cell capacity is available for sensing and telemetry functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX77827BEWI+T | Higher IQ (2.5µA), narrower input (2.5–5.5V), no MPPC, fixed 3.3V/5V outputs only | Targeted at USB-powered portable devices, not energy harvesting | Select when board space is constrained and input is stable (e.g., USB battery pack), but avoid for PV or wide-VIN battery systems. |
| TPS63802DLAR | Lower max output current (4A), higher IQ (15µA), no MPPC, supports I²C configuration | Optimized for high-current consumer electronics (e.g., tablets), not ultra-low-power IoT | Choose for applications needing >1A load capability and digital control, but reject for µA-level standby budgets or solar integration. |
Compared with MAX77827BEWI+T and TPS63802DLAR, the LTC3130EUDC#TRPBF uniquely combines sub-2µA quiescent current, true wide-VIN (0.6–25V) operation, and hardware-based MPPC - making it the only viable choice for unattended, solar-recharged remote sensors requiring decade-scale autonomy.
Availability
LTC3130EUDC#TRPBF is available at Aetrix Electronics and suitable for solar panel post-regulators, long-life battery instruments, and portable military radios requiring stable component supply, full lifecycle traceability, and guaranteed long-term availability.
Supply support for LTC3130EUDC#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 acquired Linear Technology in 2017 and maintains its legacy of high-performance power management ICs with rigorous automotive and industrial qualification standards.
The LTC3130 product line was designed specifically for ultra-low-power, wide-input energy harvesting and battery longevity applications - emphasizing quiescent current, startup efficiency, and autonomous source optimization over raw output power.
FAQ
What is the minimum input voltage required to start up the LTC3130EUDC#TRPBF?
The LTC3130EUDC#TRPBF achieves start-up from as low as 7.5µW - corresponding to 2.4V at VIN when EXTVCC is unconnected. With EXTVCC ≥ 3.15V applied, start-up is possible from VIN as low as 0.6V, enabling operation from nearly depleted batteries or weak photovoltaic sources. This is confirmed in the Electrical Characteristics table under "VIN Start-Up Voltage".
Does the LTC3130EUDC#TRPBF support true buck-boost operation where VOUT can be above, below, or equal to VIN?
Yes, the LTC3130EUDC#TRPBF implements a synchronous 2-switch buck-boost topology that inherently supports all three operating regions: buck (VOUT < VIN), boost (VOUT > VIN), and buck-boost (VOUT ≈ VIN) - without external components or mode switching. This is explicitly stated in the Applications section and verified in the block diagram and typical performance curves (e.g., Figure G20).
How does the MPPC function work on the LTC3130EUDC#TRPBF, and what is its reference voltage?
The MPPC function on the LTC3130EUDC#TRPBF uses an internal 1.00V ±50mV comparator referenced to the MPPC pin. When a resistor divider from PVIN to GND sets the MPPC voltage below this threshold, the controller reduces inductor current to servo PVIN toward the programmed voltage - maximizing power extraction from PV panels or other non-ideal sources. This is detailed in the Pin Functions and Electrical Characteristics sections.
What is the purpose of the ILIM pin on the LTC3130EUDC#TRPBF, and how does it affect performance?
The ILIM pin on the LTC3130EUDC#TRPBF selects between two average inductor current limits: grounding ILIM sets a 250mA minimum limit (optimized for low-power sensors), while tying ILIM to VCC sets a 660mA minimum limit (suited for higher-output telemetry or radio loads). This selection directly determines maximum sustainable output current and is validated in the Typical Performance Characteristics (Figure G20).
Can the LTC3130EUDC#TRPBF be used with an external clock or synchronized to a system clock?
No, the LTC3130EUDC#TRPBF does not support external clock synchronization. Its 1.2MHz oscillator is fully internal and unexposed - no SYNC pin or frequency programming interface is provided. Operation is limited to either fixed-frequency PWM (MODE = VCC) or autonomous Burst Mode® (MODE = GND), as specified in the Pin Functions and Electrical Characteristics tables.
LTC3130EUDC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC3130EUDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3130EUDC#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 LTC3130EUDC#TRPBF reliable?
The price and inventory of LTC3130EUDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3130EUDC#TRPBF is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3130EUDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3130EUDC#TRPBF?
LTC3130EUDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3130EUDC#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 LTC3130EUDC#TRPBF?
For technical support, including LTC3130EUDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3130EUDC#TRPBF requirements.
6.How does Aetrix verify that LTC3130EUDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3130EUDC#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 LTC3130EUDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3130EUDC#TRPBF?
All LTC3130EUDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3130EUDC#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 LTC3130EUDC#TRPBF part is unused and in its original packaging.
Return procedure for LTC3130EUDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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