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Analog Devices Inc. LTC3410ESC6-1.5#TRPBF
- Part No.:
- LTC3410ESC6-1.5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410ESC6-1.5#TRPBF.pdf
- Description:
- IC REG BUCK 1.5V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,795
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Product details
Overview
LTC3410ESC6-1.5#TRPBF from Analog Devices (formerly Linear Technology) is a fixed-output 1.5V, 300mA synchronous step-down DC/DC regulator in SC70-6 package, featuring 2.25MHz constant-frequency current-mode control, 96% peak efficiency, 26µA quiescent current in Burst Mode, and 100% duty-cycle low-dropout operation for single Li-ion battery systems.
For engineers reviewing the LTC3410ESC6-1.5#TRPBF datasheet, LTC3410ESC6-1.5#TRPBF pinout, LTC3410ESC6-1.5#TRPBF application, or LTC3410ESC6-1.5#TRPBF equivalent, key selection criteria include input voltage range (2.5V–5.5V), ±2% output accuracy at 100mA, thermal resistance (θJA = 250°C/W), SC70-6 footprint compatibility, and absence of external Schottky diode requirement.
Technical Context
The LTC3410ESC6-1.5#TRPBF implements a constant-frequency, current-mode synchronous buck architecture with integrated P-channel main switch (RDS(ON) = 0.75Ω typ) and N-channel synchronous rectifier (RDS(ON) = 0.55Ω typ). It operates across 2.5V–5.5V input, delivers regulated 1.5V ±2% output up to 300mA, and supports 100% duty cycle for ultra-low dropout.
Burst Mode operation enables 26µA IQ at light loads while maintaining low output ripple (20mVP-P), and internal slope compensation ensures stability at high duty cycles without reducing peak inductor current. Oscillator frequency is factory-trimmed to 2.25MHz (1.8–2.7MHz range), enabling use of compact 2.2–4.7µH inductors and ceramic 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 logic rails without feedback divider. |
| Max Output Current | 300mA continuous; sufficient for baseband processors, RF front-ends, and sensor interfaces in portable devices. |
| Input Voltage Range | 2.5V to 5.5V DC; fully supports single-cell Li-ion (2.7–4.2V) and USB-powered (4.5–5.5V) operation. |
| Switching Frequency | 2.25MHz typical (1.8–2.7MHz); allows <2.5mm² total passive area using 4.7µH inductor and 4.7µF ceramic caps. |
| Quiescent Current | 26µA in Burst Mode; extends battery runtime in standby states (e.g., cellular idle, modem sleep). |
| Efficiency Peak | 96% at VIN = 3.6V, VOUT = 1.5V, IOUT = 100mA; minimizes thermal rise in sealed enclosures. |
| Thermal Resistance | θJA = 250°C/W (SC70-6); requires minimal PCB copper for <125°C junction temp at 300mA in 70°C ambient. |
Pinout & Package
Package: 6-lead plastic SC70 (2.0mm × 1.25mm × 0.9mm height), moisture sensitivity level 1, lead-free (Pb-free) and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RUN (Pin 1) | Enable control input | Logic-high (>1.5V) enables regulation; <0.3V forces shutdown (<1µA IQ); must not float. |
| GND (Pins 2, 5) | Power and signal ground | Dual ground pins reduce ground impedance and improve EMI performance in high-frequency switching. |
| SW (Pin 3) | Switch node | Connects to inductor; carries high di/dt square-wave current; requires short, wide trace to minimize ringing. |
| VIN (Pin 4) | Main power input | Accepts 2.5–5.5V; requires local 4.7µF ceramic decoupling within 2mm of pin to suppress high-frequency noise. |
| VOUT (Pin 6) | Fixed-output feedback | Internally connected to 0.8V reference via precision resistor divider; no external resistors needed for 1.5V output. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, improving efficiency by 5–10% vs. asynchronous designs at medium loads. |
| Ceramic capacitor stability | No ESR dependency for loop stability; enables use of low-ESR, low-profile X5R/X7R ceramics for <20mVP-P ripple. |
| 100% duty-cycle operation | Maintains regulation down to VIN ≈ VOUT + IOUT×RDS(ON); extends usable battery life in Li-ion discharge tail. |
| Overtemperature protection | Thermal shutdown activates at ~150°C junction; prevents permanent damage during sustained overload or poor heatsinking. |
| Burst Mode low-noise operation | 20mVP-P output ripple at light loads; avoids audible noise and EMI issues common in pulse-skipping regulators. |
Applications
| Cellular Baseband Power | Wireless Modem Core Rail |
|---|---|
|
Use Scenario: Powers ARM-based baseband processor core (e.g., Qualcomm MDM9200) from single Li-ion cell in smartphone standby mode. IC Role / Device Role / Timing Role: Primary 1.5V synchronous buck regulator delivering up to 300mA with Burst Mode for sub-10µA system sleep current. Use Value: 96% efficiency at 100mA and 26µA IQ extend talk time by >12% vs. legacy 1.5V LDO solutions. |
Use Scenario: Supplies 1.5V core voltage to LTE/Wi-Fi combo chip (e.g., Broadcom BCM4356) in portable hotspot device. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter with 2.25MHz switching, enabling <3mm² solution size including passives. Use Value: SC70-6 footprint and ceramic-capacitor compatibility reduce PCB area by 40% vs. SO-8 buck regulators. |
| Digital Camera Image Sensor Bias | Portable Medical Instrument ADC Rail |
|
Use Scenario: Provides clean 1.5V supply to CMOS image sensor analog front-end in compact digital camera module. IC Role / Device Role / Timing Role: Low-noise synchronous buck with 20mVP-P ripple in Burst Mode, synchronized to sensor readout timing. Use Value: Ripple suppression eliminates fixed-pattern noise in 12-bit image capture without additional LC filtering. |
Use Scenario: Powers 16-bit SAR ADC (e.g., AD7682) and precision op-amps in handheld ECG monitor with Li-ion battery. IC Role / Device Role / Timing Role: High-accuracy (±2%) 1.5V rail generator with <1µA shutdown current for emergency power-off state. Use Value: ±2% output tolerance ensures full-scale ADC accuracy without calibration; 100% duty cycle sustains operation down to 2.7V battery. |
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, 22µA IQ, 0.5mm-pitch DSBGA-6; lower θJA (200°C/W) but requires external soft-start capacitor. | Better suited for space-constrained wearables due to 1.0mm × 1.0mm DSBGA; less tolerant of high-temperature PCB layouts than SC70. | Select when board area <1.2mm² is critical and thermal margin exceeds 30°C; verify soft-start timing matches system reset requirements. |
| MAX8640YETA+ | 1.5V fixed, 600mA, 2.25MHz, 35µA IQ, 2.1mm × 1.6mm TDFN-6; higher current rating but larger footprint and no 100% duty cycle. | Preferred for systems needing headroom beyond 300mA (e.g., burst-mode transceivers); unsuitable for deep-discharge Li-ion operation. | Choose when future-proofing for 400–500mA peak loads is required; avoid in battery-critical applications where dropout below 2.8V is needed. |
Compared with TPS62231DRYR and MAX8640YETA+, the LTC3410ESC6-1.5#TRPBF offers superior dropout capability (100% duty cycle), proven reliability in industrial temperature range (–40°C to 85°C), and simpler layout due to SC70's robust solder joint geometry-making it optimal for cost-sensitive, thermally constrained portable designs.
Availability
LTC3410ESC6-1.5#TRPBF is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, digital cameras, MP3 players, and portable instruments requiring stable component supply with long-term manufacturability and automotive-grade reliability screening.
Supply support for LTC3410ESC6-1.5#TRPBF 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 LTC3410ESC6-1.5#TRPBF belongs to Linear's high-efficiency monolithic synchronous buck regulator family, designed specifically for battery-powered portable electronics demanding ultra-low quiescent current, small solution size, and robust transient response.
FAQ
What is the maximum output current capability of the LTC3410ESC6-1.5#TRPBF under continuous operation?
The LTC3410ESC6-1.5#TRPBF delivers up to 300mA continuous output current at 1.5V with VIN ≥ 2.7V and ambient temperature ≤ 85°C. At 300mA and VIN = 3.6V, junction temperature remains below 125°C on standard 2-layer FR4 with 100mm² copper pour, per thermal characterization data in the official datasheet.
Does the LTC3410ESC6-1.5#TRPBF require external feedback resistors to set the 1.5V output?
No. The LTC3410ESC6-1.5#TRPBF integrates a precision resistor divider internally tied to Pin 6 (VOUT), providing a fixed 1.5V output without any external components. This eliminates resistor tolerance errors and saves PCB area compared to adjustable versions like the LTC3410ESC6.
Can the LTC3410ESC6-1.5#TRPBF operate with input voltage equal to the output voltage (2.7V → 1.5V)?
Yes. The LTC3410ESC6-1.5#TRPBF supports 100% duty-cycle operation, allowing regulation down to VIN ≈ VOUT + IOUT×RDS(ON). At 300mA and 70°C junction, RDS(ON) of the P-channel switch is ~1.0Ω, enabling functional operation at VIN = 2.7V - critical for maximizing Li-ion battery utilization.
What is the recommended input and output capacitor configuration for the LTC3410ESC6-1.5#TRPBF?
Use 4.7µF X5R/X7R ceramic capacitors for both CIN and COUT, placed within 2mm of their respective pins. For VOUT = 1.5V (≤2.5V), 4.7µF meets ESR and RMS current requirements; larger values do not improve regulation but may increase cost and board area unnecessarily.
How does Burst Mode operation affect output voltage ripple in the LTC3410ESC6-1.5#TRPBF?
In Burst Mode, the LTC3410ESC6-1.5#TRPBF maintains ≤20mVP-P output ripple even at 10µA load, achieved through controlled burst energy packets and low-noise internal reference. This is significantly lower than conventional pulse-skipping regulators, preventing interference with sensitive RF or audio circuits powered from the same rail.
LTC3410ESC6-1.5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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#TRPBF FAQ
1.How can I place an order for LTC3410ESC6-1.5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410ESC6-1.5#TRPBF 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#TRPBF reliable?
The price and inventory of LTC3410ESC6-1.5#TRPBF 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#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3410ESC6-1.5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410ESC6-1.5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410ESC6-1.5#TRPBF?
LTC3410ESC6-1.5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410ESC6-1.5#TRPBF 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#TRPBF?
For technical support, including LTC3410ESC6-1.5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410ESC6-1.5#TRPBF requirements.
6.How does Aetrix verify that LTC3410ESC6-1.5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3410ESC6-1.5#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3410ESC6-1.5#TRPBF?
All LTC3410ESC6-1.5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410ESC6-1.5#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LTC3410ESC6-1.5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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