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Analog Devices Inc. LTC3410BESC6-1.8
- Part No.:
- LTC3410BESC6-1.8
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410BESC6-1.8.pdf
- Description:
- IC REG BUCK 1.8V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,137
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Product details
Overview
LTC3410BESC6-1.8 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 at 1.8V with 2.5V–5.5V input range, 2.25MHz fixed switching frequency, and ±2% output voltage accuracy. It enables compact, low-noise power for single-cell Li-ion portable systems requiring stable low-voltage rails.
For engineers reviewing the LTC3410BESC6-1.8 datasheet, LTC3410BESC6-1.8 pinout, LTC3410BESC6-1.8 application, or LTC3410BESC6-1.8 equivalent, key selection criteria include its 100% duty-cycle dropout capability, ceramic-capacitor compatibility, shutdown current <1µA, internal 0.8V reference, and thermal protection - all critical for battery life extension and PCB space optimization.
Technical Context
The LTC3410BESC6-1.8 employs constant-frequency current-mode control with integrated P-channel and N-channel MOSFETs, enabling precise load transient response and inherent stability without external compensation. Its pulse-skipping mode maintains regulation at light loads while minimizing output ripple.
It features internal slope compensation that preserves maximum inductor peak current across all duty cycles (>40%), unlike conventional architectures. Overtemperature protection disables both switches when junction temperature approaches ~150°C, ensuring safe operation under sustained overload or high-ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% at 100mA load - ensures accurate rail generation without external feedback resistors. |
| Input Voltage Range | 2.5V to 5.5V - supports full discharge curve of single Li-ion (2.7V–4.2V) plus margin for USB or adapter inputs. |
| Switching Frequency | 2.25MHz (typ), 1.8–2.7MHz (min–max) - enables use of sub-5mm surface-mount inductors and reduces EMI filtering burden. |
| Max Output Current | 300mA continuous - sufficient for core logic, RF front-ends, and sensor subsystems in handheld devices. |
| Efficiency | Up to 96% - minimizes thermal rise and extends battery runtime in portable applications. |
| Shutdown Current | <1µA - preserves battery charge during system sleep or standby modes. |
| Duty Cycle | 100% - sustains regulated 1.8V output even as input drops to 1.8V + ILOAD×RDS(ON), critical for end-of-battery-life operation. |
Pinout & Package
Package: SC70-6 (6-lead plastic SC70), 2.0mm × 1.25mm × 0.9mm profile - optimized for ultra-compact portable PCB layouts.
| 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 - allows host MCU to manage power sequencing. |
| GND (Pins 2, 5) | Power and signal ground | Dual GND pins reduce ground impedance and improve thermal dissipation - critical for stable current-mode loop operation. |
| SW (Pin 3) | Switch node | Connects to inductor and internal P/N-MOSFET drains - carries high di/dt switching current; requires short, low-inductance routing. |
| VIN (Pin 4) | Main input supply | Accepts 2.5V–5.5V; must be decoupled with ≥2.2µF ceramic capacitor placed adjacent to pin - suppresses input ripple and prevents ringing. |
| VOUT (Pin 6) | Fixed-output feedback | Internally connected to 1.8V divider - eliminates external resistor network, simplifies layout, and improves accuracy vs adjustable versions. |
Key Features
| Feature | Design Value |
|---|---|
| No external Schottky diode required | Integrated synchronous rectification increases efficiency by eliminating forward-drop loss and thermal derating concerns. |
| Stable with ceramic capacitors | Control loop independent of output capacitor ESR - enables use of low-profile, high-RMS-current X5R/X7R ceramics for minimal footprint and ripple. |
| Low dropout operation | 100% duty cycle extends usable battery life down to ~1.85V input at 300mA - avoids premature system brownout. |
| Pulse-skipping mode | Maintains tight output regulation at microamp loads while suppressing audible noise and minimizing light-load power loss. |
| Overtemperature protection | Thermal shutdown disables both switches above ~150°C junction - prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| Cellular Telephones | Digital Still Cameras |
|---|---|
Use Scenario: Powering baseband processor core voltage rail in GSM/UMTS smartphones operating from single Li-ion battery. IC Role / Device Role / Timing Role: Primary synchronous buck regulator generating stable 1.8V supply for CPU I/O and memory interface logic. Use Value: 96% peak efficiency and 100% duty cycle preserve battery capacity through full discharge cycle; SC70-6 footprint saves board area in constrained handset designs. | Use Scenario: Supplying image sensor analog front-end and ISP core logic in compact digital cameras. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter delivering clean, low-noise 1.8V rail with fast transient response to burst-mode imaging loads. Use Value: Pulse-skipping mode suppresses switching noise during sensor readout; ceramic-capacitor compatibility ensures sub-10mVpp output ripple without bulkier tantalum alternatives. |
| Wireless Modems | Portable Instruments |
Use Scenario: Providing regulated 1.8V supply to Wi-Fi/BT SoC and RF transceiver in USB-powered dongles or embedded modules. IC Role / Device Role / Timing Role: High-frequency buck regulator supporting dynamic load changes during packet transmission/reception bursts. Use Value: 2.25MHz operation allows miniature 2.2µH inductor; low 200µA operating current minimizes idle power in always-on connectivity applications. | Use Scenario: Powering microcontroller, ADC, and display driver in handheld test equipment powered by rechargeable Li-ion packs. IC Role / Device Role / Timing Role: Primary voltage regulator for mixed-signal subsystems requiring precision, low-noise, and long runtime. Use Value: ±2% output accuracy ensures consistent ADC reference and sensor biasing; shutdown current <1µA enables multi-week standby without battery replacement. |
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, 2.05MHz switching, 300mA rating, but uses different current-mode architecture and lacks 100% duty cycle. | Higher quiescent current (12µA vs <1µA shutdown); less suitable for deep-sleep battery longevity-critical designs. | Select if higher VIN max (6V) or tighter load regulation (±1%) is prioritized over ultra-low shutdown current. |
| RT8059GJ6 | Fixed 1.8V, 2.5MHz, 300mA, but no integrated synchronous FETs - requires external Schottky diode and has lower efficiency (~92% peak). | Higher thermal dissipation and larger solution size due to external diode; not recommended for space-constrained portable designs. | Choose only if cost sensitivity outweighs efficiency, footprint, and BOM count requirements. |
Compared with TPS62231DRYR and RT8059GJ6, the LTC3410BESC6-1.8 delivers superior battery life via <1µA shutdown current and 100% duty cycle, while its fully integrated synchronous design achieves higher efficiency and smaller total solution size - making it optimal for Li-ion-powered portable electronics where runtime and miniaturization are paramount.
Availability
LTC3410BESC6-1.8 is available at Aetrix Electronics and suitable for cellular telephones, digital still cameras, wireless modems, and portable instruments requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LTC3410BESC6-1.8 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 ICs, serving industrial, automotive, communications, and consumer markets.
The LTC3410B family was designed specifically for space-constrained, battery-powered portable electronics needing high-efficiency, low-noise, fixed-output DC/DC conversion with minimal external components and robust thermal behavior.
FAQ
What is the maximum continuous output current of the LTC3410BESC6-1.8?
The LTC3410BESC6-1.8 delivers up to 300mA continuous output current at 1.8V with 2.5V–5.5V input and ambient temperature ≤85°C. Peak inductor current capability is 380mA minimum, verified per datasheet electrical characteristics under VIN = 3V and VFB = 0.7V conditions. Derating applies at elevated temperatures or low input voltages due to RDS(ON) increase.
Does the LTC3410BESC6-1.8 require external feedback resistors?
No. The LTC3410BESC6-1.8 is a fixed-output variant with internal resistive divider set to 1.8V, connecting Pin 6 directly to the internal reference comparator. This eliminates external resistors, improves accuracy, reduces BOM count, and simplifies PCB layout compared to adjustable versions like the LTC3410BE.
What package type and dimensions does the LTC3410BESC6-1.8 use?
The LTC3410BESC6-1.8 uses the SC70-6 (SC6) package: a 6-lead plastic surface-mount package measuring 2.0mm × 1.25mm × 0.9mm with 0.65mm pitch. Its low-profile construction and dual GND pins support thermal performance and high-density portable PCB designs.
How does the LTC3410BESC6-1.8 behave during input voltage dropout?
When input voltage approaches the 1.8V output, the LTC3410BESC6-1.8 enters 100% duty cycle operation - holding the high-side P-MOSFET continuously on - to maintain regulation until VIN falls below 1.8V + ILOAD×RDS(ON). This extends usable battery life significantly beyond conventional buck regulators with limited duty cycle range.
Is the LTC3410BESC6-1.8 compatible with ceramic output capacitors?
Yes. The LTC3410BESC6-1.8 is explicitly designed for stability with ceramic capacitors - its control loop does not rely on ESR for compensation. Using X5R/X7R 2.2µF ceramics at both input and output yields low ripple (<10mVpp), small footprint, and high reliability without requiring tantalum or electrolytic alternatives.
LTC3410BESC6-1.8 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):
- 1.8V
- 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 FAQ
1.How can I place an order for LTC3410BESC6-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410BESC6-1.8 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 reliable?
The price and inventory of LTC3410BESC6-1.8 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 is usually 5 days.
3.What payment methods are accepted for LTC3410BESC6-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410BESC6-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410BESC6-1.8?
LTC3410BESC6-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410BESC6-1.8 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?
For technical support, including LTC3410BESC6-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410BESC6-1.8 requirements.
6.How does Aetrix verify that LTC3410BESC6-1.8 is sourced from the original manufacturer or authorized distributors?
All LTC3410BESC6-1.8 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 meets industry standards.
7.What is the process for return or replacement of LTC3410BESC6-1.8?
All LTC3410BESC6-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410BESC6-1.8, 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 part is unused and in its original packaging.
Return procedure for LTC3410BESC6-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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