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Analog Devices Inc. LTC3410BESC6-1.2
- Part No.:
- LTC3410BESC6-1.2
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410BESC6-1.2.pdf
- Description:
- IC REG BUCK 1.2V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,259
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Product details
Overview
LTC3410BESC6-1.2 from Analog Devices (formerly Linear Technology) is a fixed-output, monolithic synchronous step-down DC/DC regulator in SC70-6 package, delivering up to 300mA at 1.2V with 2.5V–5.5V input range, 2.25MHz switching frequency, and ±2% output voltage accuracy. It enables compact, high-efficiency power conversion in single-cell Li-ion portable systems.
For engineers reviewing the LTC3410BESC6-1.2 datasheet, LTC3410BESC6-1.2 pinout, LTC3410BESC6-1.2 application, or LTC3410BESC6-1.2 equivalent, key selection criteria include dropout capability (100% duty cycle), ceramic-capacitor compatibility, shutdown current (<1µA), internal RDS(ON) values (0.75Ω P-FET / 0.55Ω N-FET), and thermal resistance (θJA = 250°C/W).
Technical Context
The LTC3410BESC6-1.2 employs constant-frequency, current-mode control with integrated P-channel main and N-channel synchronous switches. Its architecture supports pulse-skipping mode at light loads to maintain regulation while minimizing output ripple and quiescent current.
Internal 0.8V reference enables precise 1.2V output via factory-trimmed feedback divider; overtemperature protection activates above ~150°C junction temperature, disabling both switches. The device operates across –40°C to +85°C ambient and requires no external Schottky diode due to full integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±2% (1.176V–1.224V at 100mA load) |
| Input Voltage Range | 2.5V to 5.5V - supports single Li-ion battery operation from full charge to cutoff |
| Switching Frequency | 2.25MHz (±0.45MHz) - enables use of sub-5mm inductors and low-profile ceramics |
| Max Output Current | 300mA continuous - sufficient for baseband processors and RF front-ends in handheld devices |
| Efficiency | Up to 96% at 250mA - minimizes thermal stress and extends battery runtime |
| Shutdown Current | <1µA - preserves battery life during system sleep modes |
| Duty Cycle | 100% - enables low-dropout operation down to VIN ≈ VOUT + ILOAD × RDS(ON) |
Pinout & Package
Package: 6-lead plastic SC70 (SC6), 2.0mm × 1.25mm × 0.9mm profile, θJA = 250°C/W, lead-free compatible.
| 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 |
| GND (Pins 2, 5) | Power and signal ground | Dual ground pins reduce PCB trace inductance and improve thermal dissipation |
| SW (Pin 3) | Switch node | Connects to inductor; carries high di/dt square-wave current; must be routed short and wide |
| VIN (Pin 4) | Main input supply | Accepts 2.5V–5.5V; requires local 2.2µF ceramic decoupling to GND (Pin 2) |
| VOUT (Pin 6) | Fixed-output feedback node | Internally connected to precision resistive divider; sets regulated 1.2V output without external components |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, increasing efficiency by ~5–10% vs asynchronous designs |
| Ceramic capacitor stability | No ESR dependency in control loop - allows use of low-ESR, small-footprint X5R/X7R MLCCs |
| Pulse-skipping mode | Maintains regulation at light loads while reducing switching losses and output ripple |
| Low dropout operation | 100% duty cycle extends usable battery range below 1.5V input margin |
| Overtemperature protection | Thermal shutdown disables switches above ~150°C junction temperature, preventing damage |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor core voltage in GSM/UMTS handsets operating from single Li-ion cell. IC Role / Device Role / Timing Role: Primary 1.2V step-down regulator supplying digital logic rail with fast transient response. Use Value: 96% peak efficiency and <1µA shutdown current directly extend talk time and standby duration. | Use Scenario: Supplying 1.2V bias to RF transceiver ICs in 802.11b/g/n client modems. IC Role / Device Role / Timing Role: Fixed-output buck converter delivering clean, low-noise power under dynamic RF load conditions. Use Value: 2.25MHz operation minimizes conducted EMI near Wi-Fi bands; ceramic-capacitor compatibility reduces board area by >30% vs tantalum-based solutions. |
| Digital Still Cameras | Portable Instruments |
Use Scenario: Providing 1.2V core voltage to image sensor interface ASICs during burst capture mode. IC Role / Device Role / Timing Role: High-efficiency synchronous buck regulator supporting rapid load steps up to 300mA. Use Value: Current-mode control ensures <50µs recovery from 100mA→300mA load transients, preventing image corruption. | Use Scenario: Regulating 1.2V supply for microcontroller peripherals in handheld test equipment. IC Role / Device Role / Timing Role: Low-quiescent, fixed-output DC/DC converter enabling long battery life in intermittent-use instruments. Use Value: 200µA operating current and <1µA shutdown draw enable multi-week shelf life on coin-cell backup. |
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 | 3MHz switching frequency; 0.9V–3.6V adjustable output; 400mA rated; 1.5µA shutdown current | Requires external feedback resistors; higher shutdown current limits ultra-low-power sleep use | Preferred when higher switching frequency or adjustable output is needed; not drop-in due to different pinout and feedback scheme |
| MAX17222ELT+T | 1.2V fixed output; 2MHz frequency; 500mA rated; 0.5µA shutdown; uses hysteresis control instead of current mode | Hysteresis architecture yields faster transient response but higher light-load ripple than pulse-skipping mode | Selected for higher output current headroom and lower shutdown current; layout differs due to different control topology and thermal pad requirements |
Compared with LTC3410BESC6-1.2, TPS62231DRYR offers higher frequency and adjustability but requires external resistors and draws more shutdown current, while MAX17222ELT+T provides greater current capacity and lower quiescent draw but trades pulse-skipping noise performance for hysteresis speed.
Availability
LTC3410BESC6-1.2 is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, digital still cameras, and portable instruments requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LTC3410BESC6-1.2 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 and maintains its portfolio of high-performance power management ICs with rigorous reliability testing and automotive-grade qualification paths.
The LTC3410B family was designed specifically for space-constrained, battery-powered portable electronics requiring high efficiency, low quiescent current, and minimal external components - especially where SC70 packaging and fixed 1.2V/1.5V/1.8V outputs simplify design.
FAQ
What is the maximum continuous output current of the LTC3410BESC6-1.2?
The LTC3410BESC6-1.2 delivers up to 300mA continuous output current at 1.2V under typical conditions (VIN = 3.6V, TA = 25°C). Derating is required at elevated ambient temperatures or low input voltages due to thermal limits (θJA = 250°C/W) and increased RDS(ON); at 70°C ambient and VIN = 2.7V, practical limit is ~250mA to maintain TJ < 125°C.
Does the LTC3410BESC6-1.2 require external feedback resistors?
No. The LTC3410BESC6-1.2 is a fixed-output variant with an internal precision resistive divider that sets VOUT = 1.2V. Pin 6 is labeled VOUT (not VFB), and no external resistors are needed - unlike the adjustable LTC3410BE version which uses Pin 6 as VFB and requires R1/R2.
What package type and footprint does the LTC3410BESC6-1.2 use?
The LTC3410BESC6-1.2 uses the SC6 package: a 6-lead plastic SC70 variant measuring 2.0mm × 1.25mm × 0.9mm. It has exposed pad-less construction, standard SC70 pin pitch (0.65mm), and is compatible with reflow soldering per J-STD-020. Footprint matches Linear's DWG #05-08-1638.
Can the LTC3410BESC6-1.2 operate with ceramic output capacitors?
Yes. The LTC3410BESC6-1.2 is explicitly designed for stable operation with low-ESR ceramic capacitors (X5R/X7R dielectrics). Its current-mode control loop does not rely on capacitor ESR for compensation, enabling use of 2.2µF MLCCs for both input and output with minimal footprint and ripple.
What is the shutdown current specification for the LTC3410BESC6-1.2?
The LTC3410BESC6-1.2 draws less than 1µA supply current in shutdown mode (RUN pin < 0.3V), as specified in the Electrical Characteristics table. This value is guaranteed over the full –40°C to +85°C operating temperature range and enables multi-year battery shelf life in always-on portable systems.
LTC3410BESC6-1.2 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):
- 1.2V
- 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
LTC3410BESC6-1.2 FAQ
1.How can I place an order for LTC3410BESC6-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410BESC6-1.2 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 LTC3410BESC6-1.2 reliable?
The price and inventory of LTC3410BESC6-1.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410BESC6-1.2 is usually 5 days.
3.What payment methods are accepted for LTC3410BESC6-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410BESC6-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410BESC6-1.2?
LTC3410BESC6-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410BESC6-1.2 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 LTC3410BESC6-1.2?
For technical support, including LTC3410BESC6-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410BESC6-1.2 requirements.
6.How does Aetrix verify that LTC3410BESC6-1.2 is sourced from the original manufacturer or authorized distributors?
All LTC3410BESC6-1.2 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 LTC3410BESC6-1.2 meets industry standards.
7.What is the process for return or replacement of LTC3410BESC6-1.2?
All LTC3410BESC6-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410BESC6-1.2, 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 LTC3410BESC6-1.2 part is unused and in its original packaging.
Return procedure for LTC3410BESC6-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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