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Analog Devices Inc. LTC3410BESC6
- Part No.:
- LTC3410BESC6
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410BESC6.pdf
- Description:
- IC REG BUCK ADJ 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,704
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Product details
Overview
LTC3410BESC6 from Analog Devices (formerly Linear Technology) is a high-efficiency, monolithic synchronous step-down DC/DC regulator in SC70-6 package, designed for single Li-Ion battery-powered systems. It delivers up to 300mA output current with 2.5V–5.5V input range, 2.25MHz fixed switching frequency, and 1.875V fixed output voltage. Its 96% peak efficiency, 100% duty-cycle low-dropout operation, and ceramic-capacitor compatibility support compact, low-noise portable power rails.
For engineers reviewing the LTC3410BESC6 datasheet, LTC3410BESC6 pinout, LTC3410BESC6 application, or LTC3410BESC6 equivalent, key selection criteria include its fixed 1.875V output, SC70-6 thermal performance (θJA = 250°C/W), ±2% output accuracy over –40°C to 85°C, and absence of external Schottky diode requirement - critical for space-constrained battery-powered instrumentation and wireless modems.
Technical Context
The LTC3410BESC6 implements a constant-frequency, current-mode synchronous buck architecture with integrated P-channel main and N-channel synchronous MOSFETs. Its 2.25MHz oscillator enables use of sub-5mm inductors and 2.2µF ceramic capacitors, while slope-compensated control ensures stability at high duty cycles without reducing peak inductor current capability.
It operates in pulse-skipping mode at light loads to maintain regulation with ultra-low quiescent current (<1µA in shutdown, 200µA operating), and features overtemperature protection, undervoltage lockout (2.0V rising threshold), and 100% duty-cycle dropout operation - enabling extended runtime as battery voltage declines from 4.2V to 2.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.875V ±2% at 100mA load - eliminates external feedback resistors and ensures stable core voltage for low-power microcontrollers. |
| Input Voltage Range | 2.5V to 5.5V - fully supports single-cell Li-ion (2.7V–4.2V) and USB-powered operation without external LDO pre-regulation. |
| Switching Frequency | 2.25MHz (±0.45MHz) - allows use of 4.7µH inductors <2.5mm footprint and minimizes EMI in noise-sensitive RF sections. |
| Peak Switch Current | 380mA minimum - supports 300mA continuous output with margin for transient load steps in digital baseband circuits. |
| Efficiency | Up to 96% at 250mA, VIN=3.6V, VOUT=1.875V - reduces thermal load in sealed handheld enclosures and extends battery life. |
| Shutdown Current | <1µA - enables true system-level power gating for multi-week standby in IoT sensor nodes. |
| Thermal Resistance | θJA = 250°C/W (SC70-6) - requires minimal PCB copper area for thermal relief in space-limited layouts. |
Pinout & Package
Package: 6-lead plastic SC70 (SC6), 1.80–2.20mm × 1.15–1.35mm × 0.80–1.00mm height, moisture sensitivity level 1, RoHS-compliant.
| 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 supply current - used for processor-controlled power sequencing. |
| GND (Pins 2, 5) | Power and signal ground | Dual ground pins reduce ground impedance and improve PSRR; must be connected to common low-impedance ground plane under IC. |
| SW (Pin 3) | Switch node | Connects to inductor and internal P/N-MOSFET drains - high dv/dt node requiring short, wide trace away from sensitive analog signals. |
| VIN (Pin 4) | Main input supply | Accepts 2.5V–5.5V; requires local 2.2µF ceramic decoupling placed within 2mm of pin to minimize switching loop inductance. |
| VOUT (Pin 6) | Fixed-output feedback reference | Internally connected to 1.875V divider - no external resistor required; connects directly to output capacitor positive terminal for remote sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, reducing BOM count and board area while improving efficiency by ~8% vs asynchronous designs. |
| Ceramic capacitor stability | Control loop independent of output capacitor ESR - enables use of low-profile, high-reliability X5R/X7R ceramics instead of larger tantalum or aluminum electrolytics. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT + ILOAD×RDS(ON) - extends usable battery voltage range by ~150mV in Li-ion applications. |
| Pulse-skipping light-load mode | Reduces output ripple and maintains regulation at µA-level loads without burst-mode noise - ideal for always-on sensor bias rails. |
| Integrated overtemperature protection | Shuts down power switches at ~150°C junction temperature - prevents thermal runaway during sustained overload or poor heatsinking. |
Applications
| Cellular Baseband Power | Wireless Modem Core Supply |
|---|---|
Use Scenario: Powering ARM Cortex-M0+ MCU and cellular transceiver baseband section in compact LTE-M modules. IC Role / Device Role / Timing Role: Primary 1.875V core regulator delivering up to 300mA with fast load transient response to handle burst transmission currents. Use Value: 96% efficiency at 250mA extends battery life by >20% vs older 1.8V LDO solutions; SC70-6 footprint saves >3mm² PCB area. | Use Scenario: Supplying 1.875V to PHY layer logic and RF front-end bias in 802.11n/Bluetooth combo modules. IC Role / Device Role / Timing Role: Low-noise synchronous buck providing clean, regulated rail isolated from noisy digital switching domains via ceramic filtering. Use Value: 2.25MHz operation places switching harmonics above 2.4GHz ISM band, minimizing RF interference without added shielding. |
| Digital Still Camera Sensor Bias | Portable Medical Instrumentation |
Use Scenario: Generating 1.875V bias for CMOS image sensor analog front-end and ADC reference in pocket-sized cameras. IC Role / Device Role / Timing Role: Fixed-output regulator with <1µA shutdown current enabling instant-on wake-up from deep sleep between photo captures. Use Value: Pulse-skipping mode maintains <10mVpp output ripple at 10µA load - preserves sensor SNR without requiring additional LDO post-regulation. | Use Scenario: Powering low-power microcontroller, OLED display driver, and precision analog front-end in handheld ECG monitors. IC Role / Device Role / Timing Role: Primary system regulator supporting both active measurement (300mA peak) and 7-day standby (2µA avg) modes. Use Value: 100% duty-cycle dropout extends operational time from 3.0V to 1.95V battery voltage - adds ~12% usable capacity per charge cycle. |
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, 1.8V–6.5V input - higher frequency but 0.175V lower output voltage. | Requires redesign of feedback network if 1.875V exact match is mandatory; better suited for 1.8V FPGA I/O banks. | Select only if 1.8V tolerance is acceptable and higher frequency justifies layout rework. |
| MAX17222ATA+ | Fixed 1.85V output, 2MHz, 500mA IOUT, 2.0V–5.5V input - higher current rating but ±3% output accuracy vs ±2% for LTC3410BESC6. | Supports heavier loads but may require tighter output tolerance verification in precision analog subsystems. | Prefer when >300mA headroom is needed and ±3% VOUT is sufficient for target SoC. |
Compared with TPS62231DRYR and MAX17222ATA+, the LTC3410BESC6 offers the closest match to 1.875V nominal output with highest accuracy (±2%), lowest thermal resistance in SC70, and proven ceramic-capacitor stability - making it optimal for space-constrained, battery-life-critical applications where exact voltage and minimal footprint are prioritized over raw current headroom.
Availability
LTC3410BESC6 is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, and portable medical instrumentation requiring stable component supply across long production lifecycles and varying demand volumes.
Supply support for LTC3410BESC6 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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3410B family was designed specifically for ultra-compact, high-efficiency DC/DC conversion in portable Li-ion-powered devices - emphasizing low quiescent current, ceramic-capacitor compatibility, and minimal external component count.
FAQ
What is the exact output voltage of the LTC3410BESC6 and how tightly is it regulated?
The LTC3410BESC6 provides a fixed output voltage of 1.875V with ±2% accuracy over the full –40°C to 85°C operating temperature range and 2.5V–5.5V input voltage range. This specification is verified per the Electrical Characteristics table (page 2), where VOUT = 1.837V to 1.913V at 100mA load. The tight tolerance ensures reliable operation of 1.8V-core microcontrollers and FPGAs without external trimming.
Does the LTC3410BESC6 require an external Schottky diode?
No, the LTC3410BESC6 does not require an external Schottky diode. It integrates both a P-channel main switch and an N-channel synchronous rectifier, eliminating conduction losses and board space associated with discrete diodes. This is explicitly stated in the Features list ("No Schottky Diode Required") and confirmed in the Functional Diagram (page 6), where both switches are internal.
What package type and dimensions does the LTC3410BESC6 use?
The LTC3410BESC6 uses the SC6 package: a 6-lead plastic SC70 measuring 1.80–2.20mm × 1.15–1.35mm × 0.80–1.00mm height. Its land pattern and mechanical drawing are defined in LTC DWG #05-08-1638 (page 15). This ultra-small outline enables placement in dense portable PCBs where QFN or SOIC packages would be prohibitive.
Can the LTC3410BESC6 operate with ceramic output capacitors?
Yes, the LTC3410BESC6 is explicitly designed for stable operation with ceramic output capacitors. Its control loop does not rely on capacitor ESR for compensation, allowing use of low-ESR, high-reliability X5R/X7R ceramics (e.g., 2.2µF) - as confirmed in the Features list ("Stable with Ceramic Capacitors") and Applications Information (page 9).
What is the shutdown current consumption of the LTC3410BESC6?
The LTC3410BESC6 draws less than 1µA supply current in shutdown mode, as specified in the Features list and Electrical Characteristics table (page 2, IS = 0.1µA to 1µA). This ultra-low leakage enables multi-week battery standby in always-on IoT sensors and portable instruments when the RUN pin is pulled below 0.3V.
LTC3410BESC6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- 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 FAQ
1.How can I place an order for LTC3410BESC6 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410BESC6 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 reliable?
The price and inventory of LTC3410BESC6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410BESC6 is usually 5 days.
3.What payment methods are accepted for LTC3410BESC6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410BESC6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410BESC6?
LTC3410BESC6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410BESC6 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?
For technical support, including LTC3410BESC6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410BESC6 requirements.
6.How does Aetrix verify that LTC3410BESC6 is sourced from the original manufacturer or authorized distributors?
All LTC3410BESC6 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 meets industry standards.
7.What is the process for return or replacement of LTC3410BESC6?
All LTC3410BESC6 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410BESC6, 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 part is unused and in its original packaging.
Return procedure for LTC3410BESC6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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