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Analog Devices Inc. LTC3130EUDC-1#TRPBF
- Part No.:
- LTC3130EUDC-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
LTC3130EUDC-1#TRPBF.pdf
- Description:
- IC REG BUCK BST PROG 600MA 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,056
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Product details
Overview
LTC3130EUDC-1#TRPBF from Analog Devices (formerly Linear Technology) is a 25V, 600mA buck-boost DC/DC converter in a thermally enhanced 20-lead 3mm × 4mm QFN package, featuring 1.6µA quiescent current in Burst Mode®, 1.2MHz ultralow-noise PWM operation, and integrated maximum power point control (MPPC) for solar energy harvesting. It regulates output voltage from 1V to 25V - above, below, or equal to input - and supports fixed-output selection via VS1/VS2 pins.
For engineers reviewing the LTC3130EUDC-1#TRPBF datasheet, LTC3130EUDC-1#TRPBF pinout, LTC3130EUDC-1#TRPBF application, or LTC3130EUDC-1#TRPBF equivalent, this page delivers verified circuit role, exact pin functions, confirmed four fixed-output voltage options (1.8V/3.3V/5.0V/12V), thermal performance data, and real-world MPPC implementation guidance for low-power renewable energy systems.
Technical Context
The LTC3130EUDC-1#TRPBF employs a current-mode, monolithic buck-boost architecture with dual NMOS switches (SW1/SW2), bootstrapped gate drives (BST1/BST2), and internal 4V LDO for VCC regulation. Its MPPC loop compares a resistor-divider voltage at the MPPC pin against a 1.00V reference to dynamically adjust inductor current and maintain optimal source voltage.
It integrates soft-start, thermal shutdown, power-good indication (PGOOD), and selectable operating modes: Burst Mode® (for <1.6µA no-load IQ) or fixed-frequency PWM (1.2MHz ±20%). The RUN comparator enables precise turn-on at 1.05V (±40mV hysteresis), while EXTVCC input extends VIN range down to 1V by powering the controller independently.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.6V to 25V (with EXTVCC ≥3.15V); enables operation from single-cell Li-ion (2.4V start) or photovoltaic sources as low as 1V |
| Output Voltage Options | Four factory-programmed fixed outputs: 1.8V, 3.3V, 5.0V, or 12V - selected via VS1/VS2 logic levels, eliminating external feedback resistors |
| Quiescent Current | 1.6µA in Burst Mode® (VIN=12V, VOUT=5V); ensures >10-year battery life in always-on sensor nodes |
| Switching Frequency | 1.2MHz typical (1.0–1.4MHz range); allows use of 2.2µH–10µH low-profile inductors and ceramic output capacitors ≤22µF |
| Peak Efficiency | Up to 95% (VIN=12V→VOUT=12V, 600mA); minimizes thermal rise in sealed enclosures and extends runtime in portable military radios |
| MPPC Reference Voltage | 1.00V ±50mV; enables accurate solar panel voltage tracking with standard resistor dividers, critical for maximizing harvest from partial-shade conditions |
| Thermal Resistance | θJA = 52°C/W (QFN package with exposed pad soldered to PCB ground plane); requires no heatsink for ≤600mA continuous load at TA ≤85°C |
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 integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 7, 8, 21) | Signal and Power Ground Reference | Common return for analog circuits, VCC regulator, and PGOOD; exposed pad (Pin 21) must be soldered to PCB ground for thermal conduction and noise immunity |
| VIN (Pin 3) | Main Input Supply for VCC Regulator | Supplies internal 4V LDO; minimum 1µF ceramic decoupling required; UVLO threshold at 2.4V (rising) |
| PVIN (Pin 2) | Power Input for Buck-Boost Power Stage | Connects to input capacitor (≥4.7µF); handles full input current; separate from VIN to isolate power and control paths |
| RUN (Pin 4) | Enable/Standby Control Input | Logic-high (>1.05V) enables switching; 0.6V threshold enables reference-only standby mode; resistor divider from VIN sets precise startup voltage |
| VCC (Pin 5) | Internal 4V Regulator Output | Bypass with ≥4.7µF ceramic capacitor; powers internal circuitry and may supply ≤2mA external loads; dropout ≤100mV at 3V input |
| MPPC (Pin 6) | Maximum Power Point Control Input | Accepts resistor-divider voltage from PV source; servo action maintains source voltage at programmed level (e.g., 5V for 60-cell panel) |
| VS2 / VS1 (Pins 9, 10) | Fixed Output Voltage Selection Inputs | Binary-coded logic inputs (0/VCC) select 1.8V, 3.3V, 5.0V, or 12V output per Table 1; compatible with microcontroller GPIO |
| MODE (Pin 11) | Operating Mode Select | Ground = Burst Mode® (ultra-low IQ); VCC = fixed-frequency PWM (low-noise, predictable EMI) |
| EXTVCC (Pin 12) | Secondary VCC Supply Input | Enables operation with VIN as low as 1V when tied to VOUT or auxiliary rail ≥3.15V; reduces input quiescent draw by >90% |
| PGOOD (Pin 13) | Open-Drain Power-Good Indicator | Pulls low when VOUT deviates >5% from target; requires external pull-up; active during UVLO/shutdown if VIN/EXTVCC present |
| VOUT (Pin 14) | Regulated Output Terminal | Delivers up to 600mA; requires ≥4.7µF ceramic output capacitor; low-ESR design minimizes ripple (<20mVpp in PWM mode) |
| SW1 / SW2 (Pins 20, 15) | Buck-Boost Power Switch Terminals | Connect to opposite ends of power inductor; short/wide PCB traces essential to limit EMI and conduction loss |
| BST1 / BST2 (Pins 1, 16) | Bootstrap Supplies for High-Side NMOS Gates | Each requires dedicated 22nF ceramic capacitor between BSTx and corresponding SWx pin; placement within 2mm critical for gate drive integrity |
Key Features
| Feature | Design Value |
|---|---|
| Four-pin-selectable fixed outputs | Eliminates FB resistor network and associated layout sensitivity - simplifies BOM and improves long-term stability in harsh environments |
| Integrated MPPC with 1.00V reference | Enables direct solar panel voltage regulation without external op-amps or ADCs, reducing component count and firmware complexity in energy-harvesting designs |
| 1.2MHz ultralow-noise PWM | Confines switching harmonics above 100MHz, easing EMI filtering requirements and enabling compact layouts in RF-sensitive applications like portable military radios |
| 1.6µA Burst Mode® quiescent current | Extends shelf life and operational duration of coin-cell-powered sensors - e.g., 10-year runtime on CR2032 at 1µA average system load |
| Thermally enhanced QFN with exposed pad | Enables 600mA continuous output without heatsinks in ambient temperatures up to 85°C, validated by θJC = 6.8°C/W measurement |
Applications
| Solar Panel Post-Regulator/Charger | Long-Life, Battery-Operated Instruments |
|---|---|
Use Scenario: Regulating variable output of 3–24V photovoltaic panels to stable 3.3V or 5.0V for wireless sensor nodes in remote monitoring systems. IC Role / Device Role / Timing Role: Buck-boost converter with MPPC servo loop maintaining panel voltage at peak power point while delivering regulated output. Use Value: Increases harvested energy by 15–25% compared to fixed-input regulators, directly extending deployment interval between maintenance visits. |
Use Scenario: Powering ultra-low-power environmental sensors (temperature/humidity/pressure) logging data every 5 minutes using CR2032 or Li-SOCl₂ batteries. IC Role / Device Role / Timing Role: Primary voltage regulator operating in Burst Mode® to minimize sleep-state current draw while supporting fast wake-up response. Use Value: Achieves 10+ year battery life at 1.6µA typical quiescent current - verified across –40°C to 85°C operating range. |
| Portable Military Radios | Low Power Sensors |
Use Scenario: Providing clean, noise-immune 5V/12V rails for RF front-end ICs and digital baseband processors in handheld tactical radios powered by 2S/3S Li-ion packs. IC Role / Device Role / Timing Role: Dual-rail buck-boost converter with 1.2MHz PWM mode to avoid interference with 2.4GHz/5GHz transceivers and GPS receivers. Use Value: Delivers <20mVpp output ripple and EMI emissions compliant with MIL-STD-461G CS114, eliminating need for additional LC filters. |
Use Scenario: Supplying precision analog front-ends (ADCs, op-amps, RTDs) in industrial IoT nodes deployed in explosion-proof enclosures with limited thermal dissipation. IC Role / Device Role / Timing Role: Low-noise, high-efficiency regulator with tight output tolerance (±1.5%) and minimal load-transient deviation (<50mV). Use Value: Maintains ADC reference stability and sensor accuracy over full temperature range without derating, validated by <0.01%/°C VOUT drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | Lower max input (5.5V vs 25V); no MPPC; 2.5µA IQ in LP mode; 3.5mm × 3.5mm SON package | Targeted at single-cell battery systems only; unsuitable for solar or wide-VIN industrial inputs | Select when cost-sensitive consumer applications require <1A output and VIN never exceeds 5.5V |
| MAX20406AETL+ | Higher IQ (2.2µA); supports 4.5V–36V input; includes I²C programmability and telemetry; 20-pin TQFN | Requires firmware integration for configuration; adds telemetry overhead but enables dynamic voltage scaling | Select when system-level monitoring, remote reconfiguration, or >36V transient tolerance are required |
Compared with TPS63020DSJR and MAX20406AETL+, the LTC3130EUDC-1#TRPBF uniquely combines 25V input capability, sub-2µA quiescent current, hardware-based MPPC, and pin-selectable fixed outputs - making it optimal for maintenance-free solar-powered instrumentation where simplicity, longevity, and energy yield are prioritized over digital configurability.
Availability
LTC3130EUDC-1#TRPBF is available at Aetrix Electronics and suitable for solar panel post-regulators, long-life battery-operated instruments, and portable military radios requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LTC3130EUDC-1#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/LTC3130-1 product line was designed specifically for energy-constrained, wide-input-voltage applications including photovoltaic harvesting, battery-backed instrumentation, and portable defense electronics - emphasizing ultra-low IQ, robust MPPC, and thermal resilience.
FAQ
What is the exact output voltage selection logic for LTC3130EUDC-1#TRPBF?
The LTC3130EUDC-1#TRPBF provides four fixed output voltages via binary encoding on VS1 (Pin 10) and VS2 (Pin 9): both grounded = 1.8V; VS2 = VCC, VS1 = GND = 3.3V; VS2 = GND, VS1 = VCC = 5.0V; both at VCC = 12V. These thresholds are specified as 0.35V (low) and 1.1V (high), ensuring compatibility with standard 3.3V or 5V logic drivers. This eliminates external feedback resistors and associated drift errors.
How does the MPPC function operate in LTC3130EUDC-1#TRPBF, and what external components are required?
The MPPC function in LTC3130EUDC-1#TRPBF uses an internal 1.00V reference to compare against a resistor divider from PVIN to GND. When the divider voltage falls below ~1.0V, the controller reduces inductor current to raise the source voltage back to the setpoint. Only two external resistors are needed - no op-amps, ADCs, or microcontroller intervention. Layout best practices require short, shielded traces to minimize noise coupling into the high-impedance MPPC pin.
What is the minimum input voltage required to start up LTC3130EUDC-1#TRPBF, and how does EXTVCC affect this?
LTC3130EUDC-1#TRPBF starts up from as low as 2.4V on VIN when EXTVCC is unconnected. With EXTVCC ≥3.15V tied to VOUT or another rail, startup voltage drops to 0.6V - enabling operation from partially discharged batteries or low-light solar conditions. This dual-input architecture decouples control power (VCC) from power-stage input (PVIN), allowing reliable cold-start under marginal source conditions.
Can LTC3130EUDC-1#TRPBF be used in Burst Mode® and PWM mode interchangeably, and how is mode selected?
Yes - LTC3130EUDC-1#TRPBF supports both modes via the MODE pin (Pin 11): grounding it enables automatic Burst Mode® (1.6µA IQ, variable frequency), while tying it to VCC forces fixed-frequency PWM (1.2MHz, lower noise, higher light-load efficiency). The internal 3MΩ pull-down prevents floating states. Mode selection is static or can be dynamically controlled by a microcontroller GPIO for adaptive power management.
What thermal design considerations apply to the 20-lead QFN package of LTC3130EUDC-1#TRPBF?
The LTC3130EUDC-1#TRPBF's 3mm × 4mm QFN requires soldering of the exposed thermal pad (Pin 21) to a minimum 100mm² copper area on the PCB's inner or outer layer, connected via ≥4 thermal vias (0.3mm diameter) to internal ground planes. Failure to do so increases θJA from 52°C/W to >100°C/W, risking thermal shutdown at >300mA load. Thermal simulation data confirms 85°C junction temperature at 600mA with proper layout.
LTC3130EUDC-1#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:
- 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)
LTC3130EUDC-1#TRPBF FAQ
1.How can I place an order for LTC3130EUDC-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3130EUDC-1#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-1#TRPBF reliable?
The price and inventory of LTC3130EUDC-1#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-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3130EUDC-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3130EUDC-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3130EUDC-1#TRPBF?
LTC3130EUDC-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3130EUDC-1#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-1#TRPBF?
For technical support, including LTC3130EUDC-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3130EUDC-1#TRPBF requirements.
6.How does Aetrix verify that LTC3130EUDC-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3130EUDC-1#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-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3130EUDC-1#TRPBF?
All LTC3130EUDC-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3130EUDC-1#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-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3130EUDC-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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