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Analog Devices Inc. LTC3410ESC6-1.5
- Part No.:
- LTC3410ESC6-1.5
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410ESC6-1.5.pdf
- Description:
- IC REG BUCK 1.5V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,959
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Product details
Overview
LTC3410ESC6-1.5 from Analog Devices (formerly Linear Technology) is a fixed-output, high-efficiency synchronous step-down DC/DC regulator in SC70-6 package, delivering up to 300mA output current with ±2% voltage accuracy at 1.5V, operating from 2.5V–5.5V input, and featuring 2.25MHz constant-frequency operation and 96% peak efficiency for Li-ion portable systems.
For engineers reviewing the LTC3410ESC6-1.5 datasheet, LTC3410ESC6-1.5 pinout, LTC3410ESC6-1.5 application, or LTC3410ESC6-1.5 equivalent, key selection considerations include its 1.5V fixed output, 26µA quiescent current in Burst Mode, 100% duty-cycle dropout capability, SC70-6 thermal performance (θJA = 250°C/W), and compatibility with ceramic capacitors without external Schottky diode.
Technical Context
The LTC3410ESC6-1.5 employs a constant-frequency, current-mode control architecture with integrated P-channel main switch (RDS(ON) = 0.75Ω typ) and N-channel synchronous rectifier (RDS(ON) = 0.55Ω typ), enabling stable regulation across 2.5V–5.5V input while maintaining low output ripple (20mVP-P in Burst Mode). Its internal 0.8V reference and fixed-resistor feedback network set VOUT = 1.5V with ±2% accuracy over load (50–250mA) and temperature (–40°C to 85°C).
Burst Mode operation reduces supply current to 26µA at light loads by intermittently enabling switching cycles, while shutdown draws <1µA. Oscillator frequency remains tightly regulated at 2.25MHz (1.8–2.7MHz range) independent of input voltage or temperature, supporting compact 2.2–4.7µH inductors and 4.7µF ceramic input/output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% at 100mA load; enables direct replacement of LDOs in 1.5V rail applications without external resistors. |
| Max Output Current | 300mA continuous; supports digital baseband, RF transceivers, and sensor interfaces in space-constrained portable designs. |
| Input Voltage Range | 2.5V to 5.5V; compatible with single-cell Li-ion (2.7–4.2V), LiFePO₄, and regulated 3.3V/5V supplies. |
| Switching Frequency | 2.25MHz (typ); allows use of sub-5mm inductors and eliminates audible noise in consumer audio devices. |
| Quiescent Current | 26µA in Burst Mode; extends battery runtime in standby modes of cellular modems and IoT sensors. |
| Efficiency | Up to 96% at 100mA/VIN=3.6V; minimizes thermal rise in sealed enclosures and reduces PCB copper area requirements. |
| Duty Cycle | 100% dropout operation; maintains regulation down to VIN ≈ VOUT + IOUT × RDS(ON), critical for end-of-battery-life operation. |
| Package | SC70-6 (2.0mm × 1.25mm × 0.95mm); enables ultra-dense layouts in smartphones and wearables where board area is premium. |
Pinout & Package
SC70-6 plastic package: 2.0mm × 1.25mm footprint, 0.95mm max height, 0.65mm lead pitch, thermally enhanced die pad (GND pins 2 & 5 tied internally to exposed pad).
| 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-used for system-level power sequencing. |
| GND (Pins 2, 5) | Power and signal ground | Dual GND pins reduce ground impedance and improve EMI performance; both must be connected to low-impedance PCB ground plane. |
| SW (Pin 3) | Switch node | Connects to inductor; carries high di/dt square-wave current-requires short, wide trace to minimize ringing and EMI. |
| VIN (Pin 4) | Main input supply | Accepts 2.5–5.5V; requires local 4.7µF X5R/X7R ceramic capacitor placed within 2mm of pin to suppress switching transients. |
| VOUT (Pin 6) | Fixed-output feedback | Internally connected to 1.5V divider; no external resistor needed-eliminates layout error risk and saves BOM cost vs adjustable versions. |
Key Features
| Feature | Design Value |
|---|---|
| No external Schottky diode required | Integrated N-channel synchronous rectifier eliminates 0.3–0.5V forward drop, increasing efficiency by 5–10% vs diode-based buck converters. |
| Stable with ceramic capacitors only | Current-mode control and internal compensation eliminate need for ESR-dependent output caps-enables 20mVP-P ripple with 4.7µF X5R. |
| Low-noise Burst Mode operation | 26µA IQ with 20mVP-P output ripple preserves signal integrity in RF sections and audio codecs without requiring external LDO post-regulation. |
| Overtemperature protection | Thermal shutdown activates at ~150°C junction temperature, latching off SW node to prevent damage during sustained overload or poor heatsinking. |
| 100% duty cycle low-dropout mode | Maintains regulation when VIN drops to ~1.6V (at 300mA), extending usable battery life by >15% compared to non-dropout regulators. |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor core voltage (1.5V) from single Li-ion cell (2.7–4.2V) during call and standby modes. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing regulated 1.5V rail with dynamic load response to CPU DVFS transitions. Use Value: 96% efficiency at 100mA and 26µA Burst Mode IQ extend talk time by 12% and standby time by 3× vs legacy solutions. |
Use Scenario: Supplying 1.5V to LTE/Wi-Fi transceiver ICs in compact USB dongles and M.2 modules with strict thermal limits. IC Role / Device Role / Timing Role: High-frequency step-down converter enabling small 2.2µH inductor and 0603-size 4.7µF ceramics to meet size constraints. Use Value: 2.25MHz operation avoids AM/FM band interference while SC70-6 footprint fits within 8mm² PCB area budget. |
| Digital Cameras | Portable Instruments |
Use Scenario: Generating 1.5V for image sensor interface logic and ADC drivers during burst capture, with rapid load transient recovery. IC Role / Device Role / Timing Role: Fast-transient-response buck regulator handling 0→300mA load steps in <10µs with <50mV undershoot. Use Value: Current-mode architecture and 2.25MHz frequency deliver 3× faster recovery than 500kHz competitors, preventing frame corruption. |
Use Scenario: Powering precision analog front-end (AFE) and microcontroller in handheld multimeters and gas detectors running on coin cells or Li-ion. IC Role / Device Role / Timing Role: Low-noise, low-IQ regulator supplying clean 1.5V rail to 16-bit ADCs and op-amps without post-LDO filtering. Use Value: 20mVP-P ripple and <1µA shutdown current enable >100-hour battery life and <0.001% measurement error floor. |
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 | 1.5V fixed, 300mA, 3MHz, 17µA IQ, WSON-6 (2.0×2.0mm) | Higher frequency enables smaller inductors but increases gate-drive losses above 4V input; less efficient at 2.7V input. | Prefer for designs prioritizing minimum inductor size over low-VIN efficiency; requires re-layout due to larger WSON footprint. |
| MAX17222ETA+ | 1.5V fixed, 500mA, 2.5MHz, 2.5µA IQ (ultra-low), 6-bump WLP (1.22×0.84mm) | Lower IQ extends battery life further but uses 0.4mm pitch WLP-more challenging for hand-soldering and optical inspection. | Prefer for ultra-long-life battery applications where assembly yield and test access allow WLP handling; not drop-in due to different pinout. |
Compared with LTC3410ESC6-1.5, TPS62231DRYR offers higher switching frequency but sacrifices low-input efficiency, while MAX17222ETA+ delivers ultra-low IQ in a smaller WLP but requires tighter assembly controls-neither is pin-compatible, making LTC3410ESC6-1.5 optimal for balanced performance, manufacturability, and legacy design reuse.
Availability
LTC3410ESC6-1.5 is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, and portable instrumentation requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for LTC3410ESC6-1.5 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3410 family was designed specifically for high-efficiency, low-noise, space-constrained portable power applications-emphasizing ultra-low IQ, ceramic-capacitor compatibility, and robust transient response in sub-2mm packages.
FAQ
What is the maximum continuous output current of the LTC3410ESC6-1.5?
The LTC3410ESC6-1.5 delivers up to 300mA continuous output current at 1.5V with VIN ≥ 2.7V and ambient temperature ≤ 85°C. At higher temperatures or lower input voltages (e.g., 2.5V), derating applies due to increased RDS(ON) and thermal limits-maximum safe current drops to ~220mA at 85°C/2.5V per thermal analysis using θJA = 250°C/W.
Does the LTC3410ESC6-1.5 require external feedback resistors to set the 1.5V output?
No. The LTC3410ESC6-1.5 is a fixed-output variant with internal resistor divider connected to Pin 6 (VOUT), so no external resistors are needed. This eliminates layout sensitivity, improves accuracy (±2% over temperature), and reduces BOM count versus adjustable versions like LTC3410ESC6.
Can the LTC3410ESC6-1.5 operate with input voltage equal to the output voltage?
Yes. The LTC3410ESC6-1.5 supports 100% duty-cycle operation, allowing it to regulate down to VIN ≈ VOUT + (IOUT × RDS(ON)), e.g., ~1.6V at 300mA. This dropout capability extends usable battery life in Li-ion systems, especially during deep discharge where VIN falls below 2.0V.
What is the purpose of the dual GND pins (Pins 2 and 5) on the LTC3410ESC6-1.5 SC70-6 package?
Pins 2 and 5 are both connected to the internal die ground and the exposed thermal pad. Using both pins lowers ground path inductance and resistance, improving EMI performance and thermal dissipation. PCB layout requires connecting both to a solid ground plane via multiple vias-omitting either degrades efficiency and transient response.
How does Burst Mode operation affect output voltage ripple in the LTC3410ESC6-1.5?
In Burst Mode, the LTC3410ESC6-1.5 achieves 20mVP-P output ripple at light loads (e.g., 1mA) while drawing only 26µA IQ. This is accomplished by pulsing full switching cycles followed by sleep intervals-ripple frequency drops to ~1–10kHz depending on load, but amplitude remains tightly controlled by the output capacitor's ESR and value.
LTC3410ESC6-1.5 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
LTC3410ESC6-1.5 FAQ
1.How can I place an order for LTC3410ESC6-1.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410ESC6-1.5 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 LTC3410ESC6-1.5 reliable?
The price and inventory of LTC3410ESC6-1.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410ESC6-1.5 is usually 5 days.
3.What payment methods are accepted for LTC3410ESC6-1.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410ESC6-1.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410ESC6-1.5?
LTC3410ESC6-1.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410ESC6-1.5 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 LTC3410ESC6-1.5?
For technical support, including LTC3410ESC6-1.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410ESC6-1.5 requirements.
6.How does Aetrix verify that LTC3410ESC6-1.5 is sourced from the original manufacturer or authorized distributors?
All LTC3410ESC6-1.5 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 LTC3410ESC6-1.5 meets industry standards.
7.What is the process for return or replacement of LTC3410ESC6-1.5?
All LTC3410ESC6-1.5 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410ESC6-1.5, 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 LTC3410ESC6-1.5 part is unused and in its original packaging.
Return procedure for LTC3410ESC6-1.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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