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Analog Devices Inc. LTC3410BESC6-1.5
- Part No.:
- LTC3410BESC6-1.5
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410BESC6-1.5.pdf
- Description:
- IC REG BUCK 1.5V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,182
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Product details
Overview
LTC3410BESC6-1.5 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 1.5V, operating from 2.5V–5.5V input, and optimized for single Li-Ion battery-powered portable electronics.
For engineers reviewing the LTC3410BESC6-1.5 datasheet, LTC3410BESC6-1.5 pinout, LTC3410BESC6-1.5 application, or LTC3410BESC6-1.5 equivalent, key selection criteria include fixed 1.5V output, 2.25MHz switching frequency enabling compact 2.2µH inductor use, internal synchronous FETs eliminating external Schottky diode, 100% duty cycle low-dropout operation, and ceramic capacitor compatibility for minimal PCB footprint.
Technical Context
The LTC3410BESC6-1.5 employs constant-frequency current-mode control with internal P-channel main switch (RDS(ON) = 0.75Ω typ) and N-channel synchronous switch (RDS(ON) = 0.55Ω typ), supporting pulse-skipping mode at light loads to maintain regulation while minimizing output ripple. Its 0.8V internal reference enables precise fixed-output voltage generation without external feedback resistors.
Designed for battery-powered systems, it features undervoltage lockout (UVLO) at 2.0V (rising), thermal shutdown at ~150°C, and RUN pin control with 0.3V–1.5V logic thresholds. The device draws only 200µA quiescent current during operation and <1µA in shutdown, preserving battery life in standby modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% over load/temperature - ensures stable core voltage for low-power microcontrollers and RF ICs. |
| Input Voltage Range | 2.5V to 5.5V - supports full discharge curve of single-cell Li-Ion (2.7V–4.2V) with margin. |
| Switching Frequency | 2.25MHz (±0.45MHz) - enables use of small 2.2µH surface-mount inductors and reduces EMI fundamental frequency. |
| Max Output Current | 300mA continuous - sufficient for powering baseband processors, sensors, and audio codecs in portable devices. |
| Efficiency | Up to 96% at 250mA, VIN=3.6V - minimizes thermal rise and extends runtime in space-constrained handhelds. |
| Quiescent Current | 200µA operating / <1µA shutdown - critical for ultra-low-power sleep modes in battery-operated instruments. |
| Duty Cycle | 100% - maintains regulation down to VIN ≈ VOUT, extending usable battery life into deep discharge. |
Pinout & Package
Package: SC70-6 (SC6), 1.8mm × 1.2mm × 0.9mm, 6-pin plastic surface-mount package with exposed pad not present; thermal resistance θJA = 250°C/W.
| 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 system-level power sequencing. |
| GND (Pins 2, 5) | Power and signal ground | Dual ground pins reduce impedance in high-frequency return paths; 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 to minimize EMI and voltage ringing. |
| VIN (Pin 4) | Main input supply | Accepts 2.5V–5.5V; requires local 2.2µF ceramic decoupling placed adjacent to pin to suppress switching transients. |
| VOUT (Pin 6) | Fixed-output feedback node | Internally connected to 1.5V divider - no external resistor needed; connects directly to (+) terminal of COUT for remote sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, improving efficiency by ~5–8% and reducing BOM count and board area. |
| Ceramic capacitor stability | Control loop remains stable with zero-ESR ceramic output capacitors, enabling <10mVPP output ripple and sub-3mm² total solution size. |
| Pulse-skipping mode | Maintains tight output regulation at light loads (<10mA) without burst-mode noise, ideal for noise-sensitive analog/RF sections. |
| Low dropout operation | 100% duty cycle allows VOUT regulation even when VIN drops to 1.55V - maximizes energy extraction from aging Li-Ion cells. |
| Thermal protection | Overtemperature shutdown disables both switches above ~150°C junction temperature, preventing permanent damage during sustained overload. |
Applications
| Cellular Telephones | Digital Still Cameras |
|---|---|
Use Scenario: Powering baseband processor core and memory interface in GSM/UMTS handsets operating from single Li-Ion cell. IC Role / Device Role / Timing Role: Primary 1.5V system rail regulator providing clean, regulated voltage with fast transient response to burst-mode transmission demands. Use Value: 96% peak efficiency and 200µA quiescent current extend talk time by >12% versus comparable non-synchronous regulators. | Use Scenario: Supplying image sensor interface and JPEG encoder ASIC in compact digital cameras. IC Role / Device Role / Timing Role: Fixed 1.5V output stage delivering stable power during high-current CCD readout and flash charging cycles. Use Value: 2.25MHz switching frequency allows use of 2.2µH inductor, reducing solution height to <1.0mm - critical for ultra-thin camera modules. |
| Wireless Modems | Portable Instruments |
Use Scenario: Regulating power for Wi-Fi/BT combo chip and RF front-end in USB-powered dongles and IoT gateways. IC Role / Device Role / Timing Role: Compact, low-noise 1.5V supply with pulse-skipping mode ensuring minimal conducted EMI during receive sensitivity testing. Use Value: Ceramic-capacitor compatibility eliminates ESR-related instability, enabling compliance with FCC Part 15 Class B emissions limits without added filtering. | Use Scenario: Providing precision 1.5V bias for ADC reference buffers and op-amp signal chains in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Low-drift, low-noise power source with ±2% output accuracy and <10µVRMS noise floor over 10Hz–100kHz. Use Value: Internal 0.8V reference and matched on-die resistors ensure output voltage drift <±0.01%/°C - maintains measurement accuracy across –40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | Fixed 1.5V output, 2.25MHz, 300mA, but uses external compensation and requires 4.7µF minimum COUT. | Higher output capacitance requirement increases board area; lacks 100% duty cycle capability. | Choose TPS62231DRVR only if existing design uses TI's WEBENCH ecosystem and requires adjustable soft-start. |
| MP2104DQ-LF-Z | Fixed 1.5V, 2MHz, 300mA, but higher quiescent current (25µA shutdown vs <1µA) and no pulse-skipping mode. | Reduced light-load efficiency and higher output ripple limit suitability for noise-sensitive analog circuits. | Select MP2104DQ-LF-Z only for cost-sensitive industrial applications where shutdown current and ripple are non-critical. |
Compared with TPS62231DRVR and MP2104DQ-LF-Z, the LTC3410BESC6-1.5 delivers superior light-load efficiency via pulse-skipping, lower shutdown current for extended battery shelf life, and true 100% duty cycle operation - making it optimal for portable medical and premium consumer devices demanding maximum runtime and minimal EMI.
Availability
LTC3410BESC6-1.5 is available at Aetrix Electronics and suitable for cellular telephones, digital still cameras, wireless modems, portable instruments, and MP3 players requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for LTC3410BESC6-1.5 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 digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC3410BESC6-1.5 belongs to ADI's legacy Linear Technology Power Management product line, specifically engineered for ultra-compact, high-efficiency DC/DC conversion in battery-powered portable electronics with stringent size and efficiency constraints.
FAQ
What is the maximum recommended output current for the LTC3410BESC6-1.5?
The LTC3410BESC6-1.5 is rated for up to 300mA continuous output current under typical conditions (VIN ≥ 2.7V, TA ≤ 60°C, with adequate PCB copper). At higher ambient temperatures or lower input voltages, thermal derating applies - e.g., at 85°C ambient and VIN = 2.7V, max output current drops to ~220mA to maintain TJ < 125°C. Always verify thermal performance using θJA = 250°C/W and measured power dissipation in final layout.
Does the LTC3410BESC6-1.5 require external feedback resistors?
No, the LTC3410BESC6-1.5 does not require external feedback resistors. It is a fixed-output variant with internal resistor divider configured for 1.5V nominal output, connecting directly to the VOUT pin (Pin 6). This eliminates component count, layout sensitivity, and resistor tolerance errors - unlike the adjustable LTC3410BE version which uses VFB (Pin 6) with external R1/R2.
Can the LTC3410BESC6-1.5 operate with input voltage below 2.5V?
No, the LTC3410BESC6-1.5 has a specified minimum input voltage of 2.5V per Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 2.5V may result in UVLO activation (threshold ~2.0V rising) or unstable regulation. For sub-2.5V operation, consider the LTC3620 or LTC3630 families, which support down to 1.8V input.
What is the purpose of the dual GND pins (Pins 2 and 5) on the LTC3410BESC6-1.5?
The dual GND pins (Pins 2 and 5) on the LTC3410BESC6-1.5 provide separate low-impedance return paths for power and signal currents: Pin 2 serves as primary power ground for SW and VIN current loops, while Pin 5 provides dedicated signal ground for the internal error amplifier and reference circuitry. This separation minimizes ground bounce and improves load/line transient response and output voltage accuracy.
Is the LTC3410BESC6-1.5 RoHS-compliant and lead-free?
Yes, the LTC3410BESC6-1.5 is RoHS-compliant and available in lead-free packaging. Per Linear Technology documentation, ordering suffix #PBF denotes lead-free, and #TRPBF indicates lead-free tape-and-reel. The SC6 package uses matte tin plating, and Pb-free marking follows the standard "LF" designation per manufacturer's lead-free webpage.
LTC3410BESC6-1.5 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):
- 1.5V
- 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
LTC3410BESC6-1.5 FAQ
1.How can I place an order for LTC3410BESC6-1.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410BESC6-1.5 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 LTC3410BESC6-1.5 reliable?
The price and inventory of LTC3410BESC6-1.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410BESC6-1.5 is usually 5 days.
3.What payment methods are accepted for LTC3410BESC6-1.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410BESC6-1.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410BESC6-1.5?
LTC3410BESC6-1.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410BESC6-1.5 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 LTC3410BESC6-1.5?
For technical support, including LTC3410BESC6-1.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410BESC6-1.5 requirements.
6.How does Aetrix verify that LTC3410BESC6-1.5 is sourced from the original manufacturer or authorized distributors?
All LTC3410BESC6-1.5 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 LTC3410BESC6-1.5 meets industry standards.
7.What is the process for return or replacement of LTC3410BESC6-1.5?
All LTC3410BESC6-1.5 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410BESC6-1.5, 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 LTC3410BESC6-1.5 part is unused and in its original packaging.
Return procedure for LTC3410BESC6-1.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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