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Analog Devices Inc. LTC3410ESC6-1.875
- Part No.:
- LTC3410ESC6-1.875
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410ESC6-1.875.pdf
- Description:
- IC REG BUCK 1.875V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,098
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Product details
Overview
LTC3410ESC6-1.875 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 at fixed 1.875V with 2.25MHz constant-frequency current-mode control. It operates from 2.5V–5.5V input, achieves ±2% output accuracy, and supports Li-ion battery-powered portable systems requiring low quiescent current (26µA) and ceramic-capacitor stability.
For engineers reviewing the LTC3410ESC6-1.875 datasheet, LTC3410ESC6-1.875 pinout, LTC3410ESC6-1.875 application, or LTC3410ESC6-1.875 equivalent, key selection criteria include its 2.25MHz switching frequency enabling ultra-small inductors, integrated P/N-channel MOSFETs eliminating external Schottky diodes, and Burst Mode™ operation for sub-1µA shutdown current in battery-constrained designs.
Technical Context
The LTC3410ESC6-1.875 implements a constant-frequency, current-mode synchronous buck architecture with internal 0.75Ω P-channel and 0.55Ω N-channel MOSFETs. Its 2.25MHz oscillator enables compact 2.2–4.7µH inductor selection and stable operation with ≤4.7µF ceramic input/output capacitors.
Burst Mode™ operation reduces quiescent current to 26µA at light loads by intermittently activating switching cycles, while slope compensation prevents subharmonic oscillation above 40% duty cycle-maintaining full 380mA peak switch current capability across all operating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.875V ±2% - ensures precise core voltage for low-power microcontrollers and RF ICs without external feedback resistors. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion (2.7–4.2V), USB-powered, and regulated 3.3V/5V rails. |
| Switching Frequency | 2.25MHz (typ) - allows use of <2.5mm-height 2.2–4.7µH inductors and minimizes PCB footprint. |
| Max Output Current | 300mA continuous - sufficient for baseband processors, wireless modems, and digital camera sensors. |
| Quiescent Current | 26µA in operation, <1µA in shutdown - extends battery life in standby and sleep modes. |
| Efficiency | Up to 93% at 300mA - reduces thermal load in sealed portable enclosures. |
| Package | SC70-6 (SC6) - 2.0 × 1.25 × 0.9mm low-profile package for space-constrained mobile PCBs. |
Pinout & Package
SC70-6 (SC6) package: 2.0mm × 1.25mm × 0.9mm body, 0.65mm pitch, 6-pin plastic surface-mount package with exposed pad not present. Pin 1 marked by indentation; pin 1 is RUN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RUN (Pin 1) | Enable control input | Logic-high (>1.5V) enables regulation; logic-low (<0.3V) forces <1µA shutdown - requires pull-up/pull-down for deterministic state. |
| GND (Pins 2, 5) | Power ground reference | Dual GND pins reduce ground impedance and improve transient response; must be connected to common low-impedance ground plane. |
| SW (Pin 3) | Switch node | Connects to inductor; carries high di/dt square-wave current - requires short, wide trace and adjacent ground pour for EMI control. |
| VIN (Pin 4) | Main input supply | Accepts 2.5–5.5V; requires local 4.7µF ceramic decoupling placed within 2mm of pin to minimize AC loop inductance. |
| VOUT (Pin 6) | Feedback reference node | Internal 322.5k/240k resistor divider sets 1.875V output; no external resistors needed - simplifies layout and improves accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated P/N-channel MOSFETs eliminate external Schottky diode - reduces BOM count and improves efficiency by >5% vs asynchronous designs. |
| Ceramic capacitor compatibility | No ESR dependency for loop stability - enables use of low-profile, high-RMS-current X5R/X7R ceramics for <1mm total solution height. |
| 100% duty cycle operation | Supports dropout down to VIN – VOUT ≈ 0.1V - extends usable battery range in Li-ion systems down to ~2.0V before regulation loss. |
| Overtemperature protection | Thermal shutdown at ~150°C junction - prevents permanent damage during sustained overload or poor heatsinking. |
| Low-noise Burst Mode™ | 26µA quiescent current with controlled burst frequency - maintains high efficiency at 10–100µA loads without audible capacitor squeal. |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor and RF transceiver in slim smartphone designs with single Li-ion cell. IC Role / Device Role / Timing Role: Primary 1.875V core supply regulator with fast load transient response to handle burst-mode cellular transmission. Use Value: 93% efficiency at 300mA and 26µA quiescent current directly extend talk time and standby duration. | Use Scenario: Providing stable 1.875V rail for LTE/Wi-Fi SoC in compact USB-powered dongles and IoT gateways. IC Role / Device Role / Timing Role: Synchronous buck converter enabling 2.25MHz operation to shrink filter components and meet EMI Class B limits. Use Value: SC70-6 footprint and ceramic-capacitor support allow full power stage within 12mm² PCB area. |
| Digital Cameras | Portable Instruments |
Use Scenario: Supplying image sensor and ISP in battery-operated action cameras with strict height constraints. IC Role / Device Role / Timing Role: Fixed-output step-down regulator delivering low-noise 1.875V with minimal output ripple (<10mVpp) for analog pixel circuits. Use Value: Stable ceramic-capacitor operation eliminates tantalum leakage risk and improves long-term reliability. | Use Scenario: Powering microcontroller, ADC, and display driver in handheld test equipment with 8-hour battery life target. IC Role / Device Role / Timing Role: High-efficiency DC/DC converter supporting both active measurement (300mA) and deep-sleep (1µA) modes. Use Value: <1µA shutdown current and 26µA Burst Mode™ quiescent current maximize battery longevity between calibrations. |
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 |
|---|---|---|---|
| LTC3405AEDC-1.8 | 1.5MHz switching, 300mA, adjustable output (requires external resistors), DFN-8 package | Requires external feedback network; larger footprint but higher thermal performance | Choose when adjustable output or better thermal dissipation is required over SC70 size constraint. |
| LTC3403EDD-1.8 | 1.5MHz switching, 600mA, adjustable output, DFN-10 package with enable and bypass transistor | Higher current rating and integrated bypass FET for low-dropout mode; not pin-compatible | Choose when >300mA load or seamless bypass-to-regulation transition is needed. |
Compared with LTC3405AEDC-1.8 and LTC3403EDD-1.8, the LTC3410ESC6-1.875 offers the smallest PCB footprint and fixed 1.875V output with no external components, making it optimal for ultra-compact, cost-sensitive portable devices where output voltage is invariant.
Availability
LTC3410ESC6-1.875 is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, and portable instruments requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for LTC3410ESC6-1.875 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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC3410ESC6-1.875 belongs to ADI's legacy Linear Technology µPower synchronous buck regulator family, designed specifically for space- and battery-constrained portable electronics requiring high efficiency at ultralow quiescent current.
FAQ
What is the maximum continuous output current of the LTC3410ESC6-1.875?
The LTC3410ESC6-1.875 delivers up to 300mA continuous output current at VIN = 3V and ambient temperature ≤85°C. Peak switch current is rated at 380mA minimum, with derating required above 70°C ambient due to thermal resistance (θJA = 250°C/W) and RDS(ON) increase. Full 300mA operation is validated with proper PCB copper area and 4.7µF ceramic output capacitance.
Does the LTC3410ESC6-1.875 require an external Schottky diode?
No, the LTC3410ESC6-1.875 does not require an external Schottky diode. It integrates both a P-channel main switch and an N-channel synchronous rectifier, enabling fully synchronous operation that eliminates conduction losses and heat generation associated with external diodes. This integration is confirmed in the functional diagram and "No Schottky Diode Required" feature list.
What is the recommended input and output capacitor configuration for the LTC3410ESC6-1.875?
The LTC3410ESC6-1.875 is optimized for 4.7µF X5R or X7R ceramic capacitors at both input (CIN) and output (COUT). CIN must be placed within 2mm of VIN and GND pins to minimize high-frequency loop inductance; COUT connects directly between VOUT and GND pins. These values ensure stable operation, low output ripple (<10mVpp), and compatibility with the internal current-mode control loop.
How does Burst Mode™ operation affect efficiency at light loads for the LTC3410ESC6-1.875?
Burst Mode™ operation reduces the LTC3410ESC6-1.875's quiescent current to 26µA at light loads (e.g., 10–100µA), significantly improving efficiency below 1mA compared to forced continuous mode. During bursts, the inductor peak current is held near 70mA, and the device sleeps between bursts - minimizing gate charge and bias losses. Efficiency remains >80% down to 100µA load at VIN = 3.6V, as shown in Figure G02.
Is the LTC3410ESC6-1.875 RoHS-compliant and lead-free?
Yes, the LTC3410ESC6-1.875 is RoHS-compliant and offered in lead-free packaging. Per Linear Technology documentation, lead-free versions carry the #PBF suffix (e.g., LTC3410ESC6-1.875#PBF), and part marking follows the company's lead-free specification. The SC70-6 package uses matte tin plating and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1).
LTC3410ESC6-1.875 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
LTC3410ESC6-1.875 FAQ
1.How can I place an order for LTC3410ESC6-1.875 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410ESC6-1.875 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 LTC3410ESC6-1.875 reliable?
The price and inventory of LTC3410ESC6-1.875 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410ESC6-1.875 is usually 5 days.
3.What payment methods are accepted for LTC3410ESC6-1.875?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410ESC6-1.875 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410ESC6-1.875?
LTC3410ESC6-1.875 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410ESC6-1.875 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 LTC3410ESC6-1.875?
For technical support, including LTC3410ESC6-1.875 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410ESC6-1.875 requirements.
6.How does Aetrix verify that LTC3410ESC6-1.875 is sourced from the original manufacturer or authorized distributors?
All LTC3410ESC6-1.875 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 LTC3410ESC6-1.875 meets industry standards.
7.What is the process for return or replacement of LTC3410ESC6-1.875?
All LTC3410ESC6-1.875 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410ESC6-1.875, 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 LTC3410ESC6-1.875 part is unused and in its original packaging.
Return procedure for LTC3410ESC6-1.875:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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