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Analog Devices Inc. LTC3410BESC6-1.8#TRPBF
- Part No.:
- LTC3410BESC6-1.8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410BESC6-1.8#TRPBF.pdf
- Description:
- IC REG BUCK 1.8V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,622
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Product details
Overview
LTC3410BESC6-1.8#TRPBF from Analog Devices (formerly Linear Technology) is a monolithic synchronous step-down DC/DC regulator in SC70-6 package, delivering up to 300mA output at fixed 1.8V with 2.25MHz constant-frequency current-mode control. It operates from 2.5V–5.5V input, achieves 96% peak efficiency, supports 100% duty cycle for low-dropout operation, and requires no external Schottky diode-ideal for Li-ion-powered portable instrumentation.
For engineers reviewing the LTC3410BESC6-1.8#TRPBF datasheet, LTC3410BESC6-1.8#TRPBF pinout, LTC3410BESC6-1.8#TRPBF application, or LTC3410BESC6-1.8#TRPBF equivalent, key selection criteria include its fixed 1.8V output, SC70-6 footprint, ±2% output accuracy over temperature, shutdown current <1µA, and compatibility with ceramic input/output capacitors without ESR dependency.
Technical Context
The LTC3410BESC6-1.8#TRPBF implements a constant-frequency, current-mode synchronous buck architecture with integrated P-channel main switch (RDS(ON) = 0.75Ω typ) and N-channel synchronous rectifier (RDS(ON) = 0.55Ω typ). Its internal 0.8V reference enables precise 1.8V regulation via factory-trimmed feedback divider, eliminating external resistors.
Pulse-skipping mode maintains regulation at light loads while minimizing output ripple; oscillator frequency remains stable at 2.25MHz (±0.45MHz) across input voltage and temperature. Overtemperature protection disables both switches when junction temperature exceeds ~150°C, and undervoltage lockout activates below 1.94V (falling) or 2.0V (rising).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% at 100mA load; ensures stable core supply for low-voltage microcontrollers and sensors. |
| Input Voltage Range | 2.5V to 5.5V; compatible with single-cell Li-ion (2.7–4.2V) and regulated 3.3V/5V rails. |
| Switching Frequency | 2.25MHz (typ), 1.8–2.7MHz (min–max); enables use of ≤4.7µH inductors and compact 2.2µF ceramic capacitors. |
| Max Output Current | 300mA continuous; sufficient for RF transceivers, display drivers, and sensor signal chains in portable devices. |
| Efficiency | Up to 96% at 250mA, VIN=3.6V, VOUT=1.8V; minimizes thermal stress and extends battery runtime. |
| Shutdown Current | <1µA; preserves battery life during system sleep modes without external enable circuitry. |
| Thermal Resistance | θJA = 250°C/W (SC70-6); requires minimal PCB copper for thermal management in ambient ≤85°C. |
Pinout & Package
The LTC3410BESC6-1.8#TRPBF is housed in a 6-lead plastic SC70 package (1.8mm × 1.2mm × 0.9mm), optimized for space-constrained portable designs. Pin 1 is RUN, Pin 2 and Pin 5 are GND, Pin 3 is SW, Pin 4 is VIN, and Pin 6 is VOUT (fixed-output version).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RUN (Pin 1) | Enable control input | Logic-high (>1.5V) enables regulation; logic-low (<0.3V) forces shutdown with <1µA quiescent draw. |
| GND (Pins 2, 5) | Power and signal ground | Dual ground pins reduce ground impedance and improve transient response; must be connected to common low-impedance plane. |
| SW (Pin 3) | Switch node | Connects to inductor; carries high di/dt square-wave current; requires short, wide trace to minimize EMI and voltage spikes. |
| VIN (Pin 4) | Main power input | Accepts 2.5–5.5V; requires local 2.2µF ceramic decoupling capacitor placed adjacent to this pin. |
| VOUT (Pin 6) | Regulated output | Delivers fixed 1.8V; connects directly to output capacitor and load; enables remote sensing in fixed-output variants. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, reducing BOM count and improving efficiency by 5–10% vs. asynchronous designs. |
| Ceramic capacitor stability | No ESR requirement for COUT; allows use of low-profile, high-reliability X5R/X7R ceramics with <10mΩ ESR. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT, extending usable battery range in dropout conditions (e.g., Li-ion discharge to 2.0V). |
| Current-mode control | Provides inherent cycle-by-cycle current limiting and fast line/load transient response (<10µs recovery from 50–300mA step). |
| Integrated thermal protection | Auto-shutdown at ~150°C junction temperature prevents damage during sustained overload or poor heatsinking. |
Applications
| Cellular Telephones | Digital Still Cameras |
|---|---|
Use Scenario: Powering baseband processor cores and RF front-end ICs in slim smartphones operating from single Li-ion cells. IC Role / Device Role / Timing Role: Primary 1.8V system rail regulator delivering clean, efficient power with minimal PCB area. Use Value: Enables >95% efficiency at 200mA load, reducing heat generation and extending talk time by up to 12% versus older 1.5MHz regulators. | Use Scenario: Supplying image sensor interface logic and LCD bias circuits in compact digital cameras with burst-mode capture. IC Role / Device Role / Timing Role: Fixed-output synchronous buck converter providing stable 1.8V for CMOS sensor I/O and timing controllers. Use Value: Delivers fast transient response to handle rapid current surges during autofocus and flash charging, minimizing voltage droop below 50mV. |
| Wireless Modems | Portable Instruments |
Use Scenario: Regulating power for Wi-Fi/Bluetooth SoCs in battery-operated IoT gateways and home routers. IC Role / Device Role / Timing Role: High-frequency DC/DC converter enabling small inductor size and low EMI emissions in dense RF layouts. Use Value: 2.25MHz switching avoids interference with 2.4GHz ISM band; SC70 package fits within 3mm² footprint constraints. | Use Scenario: Powering precision ADCs, op-amps, and microcontrollers in handheld multimeters and environmental sensors. IC Role / Device Role / Timing Role: Low-noise, high-accuracy 1.8V supply ensuring stable reference and analog signal integrity. Use Value: ±2% output accuracy and <100µVPP ripple (with 2.2µF X7R) maintain 16-bit ADC performance across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | Fixed 1.8V output, 3MHz switching, 350mA IOUT, 1.8–6.5V input; smaller 1.5mm × 1.5mm DSBGA-6 package. | Better suited for ultra-thin wearables due to lower profile; lacks 100% duty cycle support. | Select TPS62231DRYR when board height <0.6mm is critical and dropout operation is not required. |
| MAX17222ELT+T | Fixed 1.8V, 2MHz, 500mA IOUT, 2.0–5.5V input; includes power-good indicator and higher PSRR at low frequencies. | Preferred for noise-sensitive analog subsystems requiring PG flag and tighter load regulation (±1.5%). | Select MAX17222ELT+T when system-level fault detection or sub-1% load regulation is mandatory. |
Compared with TPS62231DRYR and MAX17222ELT+T, the LTC3410BESC6-1.8#TRPBF offers superior dropout capability (100% duty cycle), proven robustness in industrial temperature ranges (–40°C to 85°C), and lower gate charge losses at 2.25MHz-making it optimal for cost-sensitive, battery-life-critical portable instruments where layout simplicity and thermal margin are prioritized.
Availability
LTC3410BESC6-1.8#TRPBF is available at Aetrix Electronics and suitable for cellular telephones, digital still cameras, wireless modems, and portable instruments requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LTC3410BESC6-1.8#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 full product support, documentation, and manufacturing continuity for all Linear-branded power management ICs.
The LTC3410B series was designed specifically for space-constrained, battery-powered portable electronics requiring high-efficiency, fixed-output DC/DC conversion with minimal external components and robust thermal behavior.
FAQ
What is the maximum output current capability of the LTC3410BESC6-1.8#TRPBF?
The LTC3410BESC6-1.8#TRPBF delivers up to 300mA continuous output current at 1.8V under typical conditions (VIN = 3.6V, TA = 25°C). Peak inductor current capability is 380mA minimum, and absolute maximum switch current ratings are 500mA DC for both P- and N-channel FETs. Derating is required above 70°C ambient or below 3V input due to RDS(ON) increase and thermal limits.
Does the LTC3410BESC6-1.8#TRPBF require an external feedback resistor network?
No. The LTC3410BESC6-1.8#TRPBF is a fixed-output variant with internal resistor divider trimmed to deliver precisely 1.8V. Pin 6 is labeled VOUT-not VFB-and connects directly to the output capacitor. External resistors are unnecessary and would disrupt regulation.
Can the LTC3410BESC6-1.8#TRPBF operate with input voltage equal to its 1.8V output?
Yes. The LTC3410BESC6-1.8#TRPBF supports 100% duty cycle operation, allowing it to maintain regulation with input voltages as low as ~1.9V (accounting for P-FET RDS(ON) drop). At VIN = 1.95V and IOUT = 100mA, typical dropout voltage is ~150mV, enabling extended battery usage down to end-of-discharge.
What ceramic capacitor dielectric is recommended for input and output filtering with the LTC3410BESC6-1.8#TRPBF?
X5R or X7R dielectrics are recommended for both CIN and COUT. These offer stable capacitance vs. temperature and voltage, low ESR (<10mΩ), and high ripple current handling. Avoid Y5V or Z5U due to severe capacitance loss at bias and temperature extremes, which can degrade loop stability and output ripple performance.
Is the SC70-6 package of the LTC3410BESC6-1.8#TRPBF lead-free and RoHS compliant?
Yes. The #TRPBF suffix denotes lead-free (Pb-free) termination and tape-and-reel packaging, fully compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1). The SC70 package uses matte tin plating and meets IPC/JEDEC standard reflow profiles.
LTC3410BESC6-1.8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 300mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
LTC3410BESC6-1.8#TRPBF FAQ
1.How can I place an order for LTC3410BESC6-1.8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410BESC6-1.8#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 LTC3410BESC6-1.8#TRPBF reliable?
The price and inventory of LTC3410BESC6-1.8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410BESC6-1.8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3410BESC6-1.8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410BESC6-1.8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410BESC6-1.8#TRPBF?
LTC3410BESC6-1.8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410BESC6-1.8#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 LTC3410BESC6-1.8#TRPBF?
For technical support, including LTC3410BESC6-1.8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410BESC6-1.8#TRPBF requirements.
6.How does Aetrix verify that LTC3410BESC6-1.8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3410BESC6-1.8#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 LTC3410BESC6-1.8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3410BESC6-1.8#TRPBF?
All LTC3410BESC6-1.8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410BESC6-1.8#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 LTC3410BESC6-1.8#TRPBF part is unused and in its original packaging.
Return procedure for LTC3410BESC6-1.8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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