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Analog Devices Inc. LTC3410BESC6-1.875
- Part No.:
- LTC3410BESC6-1.875
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410BESC6-1.875.pdf
- Description:
- IC REG BUCK 1.875V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,136
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Product details
Overview
LTC3410BESC6-1.875 from Analog Devices (formerly Linear Technology) is a high-efficiency, monolithic synchronous step-down DC/DC regulator in SC70-6 package, delivering up to 300mA output current with ±2% output voltage accuracy at 1.875V, 2.25MHz fixed switching frequency, and 2.5V–5.5V input range-designed for Li-ion battery-powered portable electronics requiring low dropout and ceramic-capacitor compatibility.
For engineers reviewing the LTC3410BESC6-1.875 datasheet, LTC3410BESC6-1.875 pinout, LTC3410BESC6-1.875 application, or LTC3410BESC6-1.875 equivalent, key selection criteria include its 100% duty-cycle capability for ultra-low dropout operation, internal synchronous FETs eliminating external Schottky diodes, stable performance with ceramic output capacitors, and precise 1.875V fixed output voltage optimized for core logic and memory rails in space-constrained devices.
Technical Context
The LTC3410BESC6-1.875 employs a constant-frequency, current-mode control architecture with integrated P-channel main and N-channel synchronous power MOSFETs. Its 2.25MHz oscillator enables compact 2.2–4.7µH inductor and 2.2µF ceramic capacitor designs while maintaining excellent transient response via slope-compensated peak-current sensing.
It features pulse-skipping mode at light loads to minimize quiescent current (<1µA in shutdown), overtemperature protection triggering at ~150°C junction temperature, and robust input UVLO (2.0–2.3V rising threshold) - all operating across –40°C to +85°C ambient with thermal resistance θJA = 250°C/W in SC70 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.875V ±2% (1.837V–1.913V at 100mA load), enabling direct powering of 1.8V logic cores with margin |
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion (2.7V–4.2V) and regulated 3.3V/5V rails without external LDO |
| Switching Frequency | 2.25MHz (±0.45MHz) - allows use of sub-3mm surface-mount inductors and minimizes EMI fundamental frequency |
| Max Output Current | 300mA continuous at VIN = 3V - sufficient for microcontroller cores, sensors, and RF front-end biasing |
| Efficiency | Up to 96% - achieved via synchronous rectification and low RDS(ON) (0.75Ω P-FET / 0.55Ω N-FET) |
| Duty Cycle | 100% - enables true low-dropout operation down to VIN ≈ VOUT, extending battery runtime in deep discharge |
| Quiescent Current | 200µA operating / <1µA shutdown - critical for always-on subsystems and standby power budgets |
Pinout & Package
Package: 6-lead plastic SC70 (SC6), 1.80–2.20mm × 1.15–1.35mm × 0.80–1.00mm height, 0.65mm pitch, thermally enhanced for 250°C/W θJA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RUN (Pin 1) | Enable control input | Logic-high (>1.5V) enables regulation; <0.3V forces shutdown with <1µA supply draw - requires pull-up or active control |
| GND (Pins 2, 5) | Power and signal ground | Dual ground pins reduce PCB trace inductance and improve thermal dissipation - must be tied together with low-impedance copper |
| SW (Pin 3) | Switch node | Connects to inductor; carries high di/dt square-wave current - requires short, wide routing away from sensitive nodes |
| VIN (Pin 4) | Main input supply | Accepts 2.5V–5.5V; requires local 2.2µF ceramic decoupling directly to Pin 2/5 GND to suppress switching noise |
| VOUT (Pin 6) | Fixed-output feedback | Internally connected to 1.875V divider - no external resistors needed; enables remote sensing when routed to load |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, reducing BOM count and improving efficiency by >5% vs asynchronous designs |
| Ceramic capacitor stability | Control loop independent of output capacitor ESR - enables use of low-profile, high-RMS-current X5R/X7R ceramics |
| 100% duty cycle operation | Maintains regulation down to VIN − VOUT ≈ ILOAD × RDS(ON) - extends usable battery voltage range by ~150mV |
| Pulse-skipping light-load mode | Reduces switching losses at ILOAD < 10mA, keeping output ripple < 10mVPP while maintaining regulation |
| Overtemperature protection | Thermal 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 core and memory interface in slim smartphone designs with single Li-ion battery. IC Role / Device Role / Timing Role: Primary 1.875V point-of-load regulator delivering clean, regulated voltage with fast transient response to dynamic CPU load changes. Use Value: Enables 100% duty cycle operation down to 2.7V battery voltage, preserving system uptime during deep discharge without external LDO cascading. | Use Scenario: Supplying image sensor analog front-end and ISP core in compact digital cameras with tight board area constraints. IC Role / Device Role / Timing Role: Fixed-output buck converter providing low-noise 1.875V rail with minimal external components (no feedback resistors required). Use Value: SC70-6 footprint and 2.25MHz switching allow full power stage in <3mm² PCB area - critical for multi-layer camera module stacking. |
| Wireless Modems | Portable Instruments |
Use Scenario: Regulating power for LTE/Wi-Fi transceiver ICs in battery-operated IoT gateways and CPE devices. IC Role / Device Role / Timing Role: High-efficiency step-down regulator supporting burst-mode RF transmission with low quiescent current during idle periods. Use Value: <1µA shutdown current and 200µA operating IQ enable multi-year battery life in always-connected edge devices. | Use Scenario: Powering precision ADCs, op-amps, and microcontrollers in handheld test equipment with variable battery voltage. IC Role / Device Role / Timing Role: Stable 1.875V reference rail ensuring consistent analog measurement accuracy across battery discharge cycle. Use Value: ±2% output accuracy and <0.4%/V line regulation maintain ADC reference integrity even as input drops from 4.2V to 2.7V. |
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 |
|---|---|---|---|
| TPS62231DRVR | 1.8V fixed output, 2.25MHz, 300mA, 2.05–6.0V input - slightly wider VIN range but no 1.875V option | Requires external resistor network to achieve 1.875V; lacks integrated VOUT pin for fixed-voltage simplicity | Choose if 1.8V suffices and higher VIN tolerance is needed; avoid if exact 1.875V and zero-resistor layout are mandatory |
| MAX17222ELT+T | 1.85V fixed output, 2.5MHz, 400mA, 2.0–5.5V input - higher current rating but 25mV offset from 1.875V | Higher peak current supports heavier loads; tighter output tolerance (±1.5%) but different nominal voltage | Prefer for applications needing >300mA or tighter accuracy; verify 1.85V compatibility with downstream logic before substitution |
Compared with TPS62231DRVR and MAX17222ELT+T, the LTC3410BESC6-1.875 uniquely delivers exact 1.875V from a dedicated VOUT pin without external components, maintains 100% duty cycle at lowest possible RDS(ON), and offers proven ceramic-capacitor stability in space-constrained portable systems.
Availability
LTC3410BESC6-1.875 is available at Aetrix Electronics and suitable for cellular telephones, digital still cameras, and wireless modems requiring stable component supply, long-term lifecycle support, and guaranteed authentic sourcing.
Supply support for LTC3410BESC6-1.875 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) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving precision instrumentation, communications, and industrial markets.
The LTC3410B series 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 tolerance of the LTC3410BESC6-1.875 under full load?
The LTC3410BESC6-1.875 guarantees ±2% output voltage accuracy at 100mA load across temperature and line variations, meaning the actual output remains within 1.837V to 1.913V. This specification is confirmed in the Electrical Characteristics table under "VOUT Regulated Output Voltage" for the -1.875 variant, with testing performed at TA = 25°C and full operating temperature range assured by design correlation.
Does the LTC3410BESC6-1.875 require external feedback resistors to set its output voltage?
No, the LTC3410BESC6-1.875 does not require external feedback resistors. As a fixed-output version, it uses an internal resistive divider connected to Pin 6 (VOUT), which is pre-configured for 1.875V. This eliminates component count, layout complexity, and resistor tolerance errors - unlike the adjustable LTC3410BE variant that requires external R1/R2.
Can the LTC3410BESC6-1.875 operate with input voltage equal to its output voltage?
Yes, the LTC3410BESC6-1.875 supports 100% duty cycle operation, allowing it to maintain regulation when VIN approaches VOUT (e.g., VIN = 1.95V). In this dropout condition, output voltage equals VIN minus the P-channel FET's conduction drop (ILOAD × RDS(ON)), enabling extended battery runtime beyond typical buck limitations.
What ceramic capacitor dielectric types are recommended for use with the LTC3410BESC6-1.875?
X5R and X7R dielectrics are explicitly recommended for both input (CIN) and output (COUT) capacitors with the LTC3410BESC6-1.875. These formulations provide optimal balance of capacitance stability over temperature and DC bias, low ESR, and reliability - avoiding voltage coefficient issues seen in Y5V/Z5U types that could compromise regulation or cause audible noise.
How does the LTC3410BESC6-1.875 handle short-circuit conditions on its output?
Under output short-circuit, the LTC3410BESC6-1.875 reduces its oscillator frequency to ~310kHz (1/7 nominal), a feature called frequency foldback. This extends off-time, limiting peak inductor current and preventing thermal runaway. The device resumes normal 2.25MHz operation once VFB rises above 0V, ensuring self-recovery without latch-off or manual reset.
LTC3410BESC6-1.875 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.875V
- 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
LTC3410BESC6-1.875 FAQ
1.How can I place an order for LTC3410BESC6-1.875 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410BESC6-1.875 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 LTC3410BESC6-1.875 reliable?
The price and inventory of LTC3410BESC6-1.875 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410BESC6-1.875 is usually 5 days.
3.What payment methods are accepted for LTC3410BESC6-1.875?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410BESC6-1.875 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410BESC6-1.875?
LTC3410BESC6-1.875 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410BESC6-1.875 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 LTC3410BESC6-1.875?
For technical support, including LTC3410BESC6-1.875 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410BESC6-1.875 requirements.
6.How does Aetrix verify that LTC3410BESC6-1.875 is sourced from the original manufacturer or authorized distributors?
All LTC3410BESC6-1.875 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 LTC3410BESC6-1.875 meets industry standards.
7.What is the process for return or replacement of LTC3410BESC6-1.875?
All LTC3410BESC6-1.875 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410BESC6-1.875, 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 LTC3410BESC6-1.875 part is unused and in its original packaging.
Return procedure for LTC3410BESC6-1.875:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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