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Analog Devices Inc. LTC3130IUDC#TRPBF
- Part No.:
- LTC3130IUDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
LTC3130IUDC#TRPBF.pdf
- Description:
- IC REG BUCK BST ADJ 600MA 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,235
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Product details
Overview
LTC3130IUDC#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 features programmable maximum power point control (MPPC) - ideal for solar-powered sensor nodes and long-life battery systems.
For engineers reviewing the LTC3130IUDC#TRPBF datasheet, LTC3130IUDC#TRPBF pinout, LTC3130IUDC#TRPBF application, or LTC3130IUDC#TRPBF equivalent, key selection criteria include its 1.2MHz ultralow-noise PWM architecture, pin-selectable Burst Mode® vs fixed-frequency operation, accurate RUN comparator threshold (1.05V typ), integrated soft-start, and thermally enhanced 20-lead 3mm × 4mm QFN package with exposed ground pad.
Technical Context
The LTC3130IUDC#TRPBF employs a synchronous four-switch buck-boost topology with dual NMOS power switches (SW1/SW2) and integrated gate drivers powered by BST1/BST2 bootstrap supplies. Its current-mode control loop uses internal compensation and supports seamless transitions between buck, boost, and buck-boost regions without mode switching artifacts.
It integrates a 4V LDO for internal VCC regulation, supports external VCC biasing via EXTVCC to extend VIN down to 1V, and implements MPPC by servoing inductor current based on a precision 1.00V MPPC reference. The RUN pin enables precise start-up control with 100mV hysteresis, while MODE selects between Burst Mode® (1.6µA IQ) and fixed-frequency PWM (1.2MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.4V to 25V (start-up); extends to 0.6V when EXTVCC ≥ 3.15V - enables operation from single-cell Li-ion or weak energy harvesters. |
| VOUT Range | 1.0V to 25V (adjustable via FB pin) - supports wide output flexibility without external DAC or controller. |
| Quiescent Current | 1.6µA in Burst Mode® (VIN = 12V, VOUT = 5V) - minimizes standby drain in battery-critical applications. |
| Switching Frequency | 1.2MHz (typ), ±20% over temp - allows use of compact 2.2µH–10µH inductors and low-ESR ceramic capacitors. |
| Output Current | 600mA continuous in buck mode; peak inductor current limit selectable up to 1.3A - sufficient for RF transceivers and microcontrollers. |
| MPPC Reference | 1.00V ±50mV (–40°C to 125°C) - enables accurate solar panel voltage tracking with simple resistor divider. |
| Package | 20-lead 3mm × 4mm QFN with exposed thermal pad - achieves θJA = 52°C/W for high efficiency in space-constrained layouts. |
Pinout & Package
Package: 20-lead (3mm × 4mm) plastic QFN with exposed GND pad (Pin 21), rated for –40°C to 125°C operating junction temperature. Exposed pad must be soldered to PCB ground plane for thermal and electrical performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| BST1 (1) | Bootstrap supply for SW1 high-side driver | Requires 22nF capacitor to SW1; enables efficient 100% duty-cycle capability in boost mode. |
| PVIN (2) | Main power input to buck-boost power stage | Accepts up to 27.5V; bypass with ≥4.7µF ceramic capacitor close to pin for stability. |
| VIN (3) | Input to internal VCC LDO regulator | Supplies internal circuitry; minimum 1µF decoupling required; UVLO at 2.3V (rising). |
| RUN (4) | Enable comparator input | Turns on converter when >1.05V; 100mV hysteresis prevents chatter; supports precise VIN start threshold via resistor divider. |
| VCC (5) | Internal 4V regulated supply output | Bypass with ≥4.7µF ceramic; can power external logic ≤2mA; dropout <100mV at 3V input. |
| MPPC (6) | Maximum Power Point Control input | Compares to 1.00V reference; drives inductor current to maintain programmed VIN voltage - critical for solar harvesting. |
| GND (7–8, 21) | Analog and power ground reference | Exposed pad (Pin 21) is mandatory GND connection; provides primary thermal path and low-impedance return. |
| FB (9) | Feedback input for adjustable output | 1.000V reference (±20mV); sets VOUT = 1.0V × (1 + R1/R2); high-impedance (≤10nA) for low divider current. |
| VS1/ILIM (10) | Output select (LTC3130-1) / current limit (LTC3130) | This part is LTC3130 (not -1), so ILIM configures average inductor current limit: 250mA (low) or 660mA (high). |
| MODE (11) | Operation mode select | Low = Burst Mode® (ultra-low IQ); High = fixed 1.2MHz PWM; internal 3MΩ pull-down prevents floating. |
| EXTVCC (12) | Secondary VCC input | Enables operation down to 1V VIN; reduces input quiescent draw; requires 4.7µF if not tied directly to VOUT cap. |
| PGOOD (13) | Open-drain power-good indicator | Asserts low when VOUT drops >7.5% below regulation; requires external pull-up; active during UVLO/shutdown. |
| VOUT (14) | Regulated output voltage | Delivers up to 600mA; bypass with ≥4.7µF ceramic; short-circuit protected via current limiting. |
| BST2 (16) | Bootstrap supply for SW2 high-side driver | Requires 22nF capacitor to SW2; complements BST1 for full 4-switch operation. |
| SW2 (15) | High-side switch node (boost path) | Connects to inductor second terminal; keep trace short/wide to minimize EMI and conduction loss. |
| PGND (18–19) | Power ground return for switches | Separate from analog GND pins; must connect directly to exposed pad and low-impedance ground plane. |
| SW1 (20) | High-side switch node (buck path) | Connects to inductor first terminal; same layout rules as SW2 for optimal efficiency and noise control. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 1.6µA in Burst Mode® enables >10-year battery life in 10µA-average IoT sensors. |
| Wide VIN/VOUT flexibility | Operates with VIN < VOUT, VIN > VOUT, or VIN ≈ VOUT - eliminates need for separate buck/boost converters. |
| Integrated MPPC | Tracks solar panel maximum power point using only two resistors - no MCU or external ADC required. |
| Accurate RUN threshold | 1.05V enable threshold with 100mV hysteresis ensures reliable, chatter-free start-up across temperature. |
| Thermally enhanced QFN | 3mm × 4mm footprint with exposed GND pad achieves 52°C/W θJA - sustains 600mA output without derating. |
| Programmable current limit | ILIM pin selects 250mA or 660mA average inductor current limit - matches load requirements and inductor size. |
Applications
| Solar-Powered Environmental Sensor | Portable Military Radio Power Supply |
|---|---|
|
Use Scenario: Outdoor wireless sensor node powered by a 2.5W monocrystalline PV panel under variable irradiance (200–1000W/m²). IC Role / Device Role / Timing Role: Primary buck-boost regulator with MPPC, converting unregulated PV output (0.8–22V) to stable 3.3V for MCU, LoRa transceiver, and analog front-end. Use Value: Delivers >90% efficiency at 100µA–200mA loads and extends operational uptime by extracting up to 15% more energy from partial-shade conditions via MPPC. |
Use Scenario: Handheld tactical radio requiring 3.3V/500mA from either two AA alkalines (1.8–3.2V) or a 12V vehicle port. IC Role / Device Role / Timing Role: Single-chip power manager handling both buck (12V→3.3V) and boost (2×AA→3.3V) modes without manual reconfiguration. Use Value: Eliminates dual-converter BOM; maintains RF amplifier performance across full battery discharge curve with <1.6µA shutdown IQ. |
| Low-Power Industrial Data Logger | Long-Life Battery Instrumentation |
|
Use Scenario: Remote vibration monitor logging data every 5 minutes using a CR2032 coin cell (2.0–3.0V). IC Role / Device Role / Timing Role: Always-on buck-boost regulator generating 1.8V for ultra-low-power MCU and 3.3V for flash memory during write cycles. Use Value: Achieves 8.2-year battery life (per calculation at 1.6µA avg IQ + 5ms/5min 20mA pulse) - exceeds typical CR2032 capacity by 3× vs conventional regulators. |
Use Scenario: Subsea pressure sensor deployed for 5+ years, powered by lithium-thionyl chloride (3.6V nominal, 2.0–3.9V range). IC Role / Device Role / Timing Role: Primary voltage regulator maintaining 3.3V output while minimizing self-discharge and supporting cold-temperature startup (–40°C). Use Value: Guaranteed operation at –40°C with <2.4µA max Burst Mode® IQ and 0.6V VIN start capability via EXTVCC - preserves battery shelf life. |
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 | Lower IQ (2.5µA), 2A output, but no MPPC, no EXTVCC, and only 5.5V max VIN - lacks solar harvesting and ultra-wide input capability. | Best suited for USB-powered portable devices where input is stable and MPPC is unnecessary. | Select LTC3130IUDC#TRPBF when MPPC, sub-2.4V VIN operation, or <2µA IQ is required; choose TPS63020DSJR for higher current and lower cost in fixed-input apps. |
| MAX20406AATG+ | Higher IQ (12µA), 3.5A output, integrated FETs, but no programmable MPPC and only 16V max VIN - trades ultra-low IQ for higher integration. | Ideal for automotive body electronics needing robust AEC-Q200 qualification and higher current. | LTC3130IUDC#TRPBF remains preferred for energy-harvesting and multi-decade battery life; MAX20406AATG+ fits high-current, automotive-grade designs. |
Compared with TPS63020DSJR and MAX20406AATG+, the LTC3130IUDC#TRPBF uniquely combines <2µA quiescent current, true 0.6V–25V input range, integrated MPPC, and guaranteed –40°C operation - making it irreplaceable in solar-powered and ultra-long-life battery applications.
Availability
LTC3130IUDC#TRPBF is available at Aetrix Electronics and suitable for solar panel post-regulators, portable military radios, and long-life battery-operated instruments requiring stable component supply and extended lifecycle support.
Supply support for LTC3130IUDC#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 continues its legacy of high-performance analog, mixed-signal, and power management ICs for demanding industrial, aerospace, and instrumentation applications.
The LTC3130 product line was designed specifically for ultra-low-power, wide-input-range DC/DC conversion in energy-harvesting and battery-critical systems - emphasizing quiescent current, MPPC, and thermal efficiency in miniature packages.
FAQ
What is the minimum input voltage required to start up the LTC3130IUDC#TRPBF?
The LTC3130IUDC#TRPBF achieves start-up from as low as 2.4V on VIN when EXTVCC is unconnected. With EXTVCC ≥ 3.15V, start-up is guaranteed down to 0.6V on VIN - enabling operation from nearly depleted batteries or low-output energy harvesters. Startup power requirement is just 7.5µW, verified per datasheet Figure 21.
Does the LTC3130IUDC#TRPBF support maximum power point tracking (MPPC) and how is it configured?
Yes, the LTC3130IUDC#TRPBF includes integrated MPPC functionality. It is configured by connecting the MPPC pin to a resistor divider from VIN to GND, setting the target input voltage to match the solar panel's VMPP. The internal 1.00V reference compares the divider output and adjusts inductor current to servo VIN to that point - no external controller or software is needed.
What package type and thermal characteristics does the LTC3130IUDC#TRPBF use?
The LTC3130IUDC#TRPBF uses a 20-lead 3mm × 4mm plastic QFN package with an exposed thermal pad (Pin 21). Its thermal resistance is θJA = 52°C/W and θJC = 6.8°C/W. Proper soldering of the exposed pad to a PCB ground plane is mandatory to achieve these ratings and sustain 600mA output without thermal derating.
How does the MODE pin affect efficiency and noise performance of the LTC3130IUDC#TRPBF?
When MODE = 0V, the LTC3130IUDC#TRPBF enters Burst Mode® operation, reducing quiescent current to 1.6µA but introducing low-frequency output ripple (~1kHz). When MODE = VCC, it operates in fixed 1.2MHz PWM mode - delivering lower output ripple and tighter regulation at the cost of ~20× higher light-load IQ. Selection depends on system noise sensitivity versus battery life requirements.
Can the LTC3130IUDC#TRPBF regulate output voltage above, below, or equal to input voltage?
Yes, the LTC3130IUDC#TRPBF is a true four-switch buck-boost converter capable of seamless regulation whether VOUT is greater than, less than, or equal to VIN. This eliminates the need for separate buck and boost converters in systems with variable input sources such as batteries discharging from 4.2V to 2.5V while powering a constant 3.3V rail.
LTC3130IUDC#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)
LTC3130IUDC#TRPBF FAQ
1.How can I place an order for LTC3130IUDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3130IUDC#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 LTC3130IUDC#TRPBF reliable?
The price and inventory of LTC3130IUDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3130IUDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3130IUDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3130IUDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3130IUDC#TRPBF?
LTC3130IUDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3130IUDC#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 LTC3130IUDC#TRPBF?
For technical support, including LTC3130IUDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3130IUDC#TRPBF requirements.
6.How does Aetrix verify that LTC3130IUDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3130IUDC#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 LTC3130IUDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3130IUDC#TRPBF?
All LTC3130IUDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3130IUDC#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 LTC3130IUDC#TRPBF part is unused and in its original packaging.
Return procedure for LTC3130IUDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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