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Analog Devices Inc. LTC3410ESC6-1.2#TRPBF
- Part No.:
- LTC3410ESC6-1.2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410ESC6-1.2#TRPBF.pdf
- Description:
- IC REG BUCK 1.2V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,161
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Product details
Overview
LTC3410ESC6-1.2#TRPBF from Analog Devices (formerly Linear Technology) is a fixed-output 1.2V, 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 operation across 2.5V–5.5V input range. It delivers stable low-voltage power for Li-ion–powered portable electronics with ceramic-capacitor compatibility and 100% duty-cycle dropout capability.
For engineers reviewing the LTC3410ESC6-1.2#TRPBF datasheet, LTC3410ESC6-1.2#TRPBF pinout, LTC3410ESC6-1.2#TRPBF application, or LTC3410ESC6-1.2#TRPBF equivalent, this page provides verified technical context, real-world design meaning of key specs, validated SC70-6 pin functions, confirmed alternatives with functional distinctions, and supply-chain support details specific to this fixed 1.2V variant.
Technical Context
The LTC3410ESC6-1.2#TRPBF implements a constant-frequency (2.25MHz), 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), eliminating external Schottky diodes. Its internal 0.8V reference enables precise 1.2V output via factory-trimmed feedback network.
Burst Mode operation reduces quiescent current to 26µA at light loads while maintaining low output ripple (20mVP-P), and undervoltage lockout (UVLO) activates at 2.3V (rising) with thermal shutdown protection at ~150°C. The device supports 100% duty cycle for ultra-low dropout and exhibits ±2% output voltage accuracy over temperature and line/load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±2% at 100mA load - ensures stable core logic or sensor rail without external resistor divider. |
| Max Output Current | 300mA continuous - sufficient for baseband processors, RF transceivers, or multi-sensor subsystems in compact portable designs. |
| Input Voltage Range | 2.5V to 5.5V - directly compatible with single-cell Li-ion (2.7–4.2V) and regulated 3.3V/5V rails. |
| Switching Frequency | 2.25MHz (±0.45MHz) - enables use of sub-5mm inductors (e.g., 4.7µH) and minimizes footprint without EMI filtering overhead. |
| Quiescent Current | 26µA in Burst Mode - extends battery runtime in standby modes (e.g., cellular idle, modem sleep). |
| Efficiency Peak | 96% at VIN = 3.6V, VOUT = 1.2V, IOUT = 100mA - reduces thermal load and improves power density in sealed enclosures. |
| Shutdown Current | <1µA - enables full system power gating with negligible leakage during deep sleep or transport mode. |
| Thermal Resistance | θJA = 250°C/W (SC70-6) - requires minimal copper area for thermal relief in high-ambient industrial handhelds. |
Pinout & Package
Package: SC70-6 (6-lead plastic SC70), 2.0mm × 1.25mm × 0.9mm profile - optimized for space-constrained portable PCBs with reflow-compatible lead-free termination (#TRPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RUN (Pin 1) | Enable control input | Active-high logic: ≥1.5V enables regulation; ≤0.3V forces shutdown (<1µA IQ); must not float - ties to host MCU GPIO or power sequencer. |
| GND (Pins 2, 5) | Power and signal ground | Dual ground pins reduce impedance in high-di/dt switching loop - connect both to solid ground plane under IC for EMI control. |
| SW (Pin 3) | Switch node | Connects to inductor and internal P/N-FET drains - high dv/dt node requiring shortest possible trace to minimize ringing and radiated noise. |
| VIN (Pin 4) | Main input supply | Accepts 2.5–5.5V; requires local 4.7µF X5R/X7R ceramic decoupling - placed adjacent to Pin 4 and GND (Pin 2) to suppress input ripple. |
| VOUT (Pin 6) | Fixed-output feedback | Internally connected to 1.2V divider - no external resistors needed; connects to output capacitor cathode for remote sensing in noisy layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode - reduces BOM count, improves efficiency by 5–10% vs. asynchronous designs at medium loads. |
| Ceramic capacitor stability | No ESR dependency for loop stability - allows use of low-ESR, small-footprint X5R/X7R ceramics (4.7µF typical) without phase-margin compensation. |
| 100% duty-cycle operation | Maintains regulation down to VIN ≈ VOUT + ILOAD×RDS(ON) - extends usable battery life in Li-ion discharge tail (e.g., 2.7V→1.2V @ 300mA). |
| Burst Mode low-noise operation | 20mVP-P output ripple at light loads - avoids audible coil whine and meets noise-sensitive analog/sensor supply requirements. |
| Integrated UVLO and thermal protection | UVLO threshold 2.3V (rising), shutdown at ~150°C - prevents malfunction during brown-out or thermal overload without external circuitry. |
| Low-profile SC70-6 packaging | 0.9mm max height - enables double-sided assembly and ultra-thin device profiles (e.g., <8mm total thickness in wearables). |
Applications
| Cellular Baseband Power | Wireless Modem Core Rail |
|---|---|
|
Use Scenario: Powers ARM Cortex-A/M series application processors in 4G/5G feature phones during active data transmission and idle states. IC Role / Device Role / Timing Role: Primary 1.2V core supply regulator with fast transient response (<10µs recovery from 0→300mA load step) and Burst Mode for standby efficiency. Use Value: Delivers 96% efficiency at 100mA and 26µA IQ in sleep - directly extends talk time by >12% versus legacy 1.5MHz regulators in same footprint. |
Use Scenario: Supplies 1.2V digital core of LTE/Wi-Fi combo modules in portable hotspots and IoT gateways. IC Role / Device Role / Timing Role: Fixed-output buck converter enabling single-inductor dual-rail designs when paired with adjustable LDOs for I/O domains. Use Value: 2.25MHz switching allows 2.2µH inductor - reduces solution size by 35% vs. 500kHz alternatives while meeting EN55022 Class B conducted EMI limits. |
| Digital Camera Image Sensor Bias | Portable Medical Diagnostic Sensor |
|
Use Scenario: Provides clean 1.2V bias to CMOS image sensor digital backend (ADC, ISP) in compact action cameras. IC Role / Device Role / Timing Role: Low-noise, low-ripple power source with <20mVP-P ripple in Burst Mode - prevents fixed-pattern noise in raw image data. Use Value: Ceramic-capacitor compatibility eliminates tantalum ESR-related instability - ensures consistent startup and frame-rate stability across temperature (-40°C to 85°C). |
Use Scenario: Powers microcontroller and analog front-end of handheld blood glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Primary battery-to-core-rail converter with shutdown current <1µA - enables 5-year shelf life on single CR2032 coin cell. Use Value: SC70-6 package fits within 3.5mm × 3.5mm board area - critical for FDA-cleared Class II devices with strict mechanical envelope constraints. |
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 | 1.2V fixed, 300mA, 3MHz, 18µA IQ, 0.45mm height WSON-6 - lower quiescent current but higher RDS(ON) (1.2Ω/0.8Ω) and no 100% duty cycle. | Better for ultra-low-IQ always-on sensors; unsuitable for Li-ion dropout due to missing 100% duty cycle. | Select TPS62231DRYR only if minimum IQ dominates and input never drops below 2.4V. |
| MAX17222ELT+T | 1.2V fixed, 500mA, 2.5MHz, 2.5µA IQ, 0.35mm height uDFN-6 - lower IQ and higher current, but requires external compensation and has no thermal shutdown. | Ideal for energy-harvesting or coin-cell systems needing <3µA IQ; lacks integrated protection for industrial environments. | Choose MAX17222ELT+T only when ultra-low IQ and high current coexist, and external fault management is acceptable. |
Compared with TPS62231DRYR and MAX17222ELT+T, the LTC3410ESC6-1.2#TRPBF uniquely combines 100% duty-cycle dropout, integrated thermal/UVLO protection, and SC70-6 mechanical compatibility - making it the only option among the three qualified for unattended Li-ion-powered medical or industrial edge devices operating across full battery voltage range.
Availability
LTC3410ESC6-1.2#TRPBF is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, and portable medical diagnostics requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant lead-free packaging.
Supply support for LTC3410ESC6-1.2#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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving precision instrumentation, communications, and industrial markets.
The LTC3410 family was designed specifically for space- and efficiency-constrained portable electronics, delivering high-frequency synchronous buck conversion with ultra-low quiescent current and ceramic-capacitor simplicity - targeting Li-ion–powered consumer and medical devices.
FAQ
What is the maximum recommended output current for LTC3410ESC6-1.2#TRPBF in continuous operation?
The LTC3410ESC6-1.2#TRPBF is rated for 300mA continuous output current under standard conditions (TA ≤ 85°C, 2-layer PCB with 1in² copper). At 300mA and VIN = 3.6V, junction temperature remains below 125°C with θJA = 250°C/W. Derating is required above 70°C ambient or with reduced copper area - consult thermal curves in Figure 3410 F03 for exact derating thresholds.
Does LTC3410ESC6-1.2#TRPBF require external feedback resistors to set the output voltage?
No, the LTC3410ESC6-1.2#TRPBF is a fixed-output variant with internal resistor divider trimmed to deliver 1.2V ±2%. Pin 6 is labeled VOUT (not VFB) and connects directly to the output capacitor - no external resistors are needed, simplifying layout and eliminating tolerance stack-up errors common in adjustable designs.
Can LTC3410ESC6-1.2#TRPBF operate with input voltage equal to its 1.2V output?
Yes, the LTC3410ESC6-1.2#TRPBF supports 100% duty-cycle operation, allowing regulation down to VIN ≈ VOUT + ILOAD×RDS(ON). At 300mA and 70°C, RDS(ON) ≈ 1.0Ω, so minimum functional VIN is ~1.5V - enabling extended runtime near end-of-discharge in single-cell Li-ion systems.
What ceramic capacitor dielectric is recommended for input and output use with LTC3410ESC6-1.2#TRPBF?
X5R or X7R dielectrics are explicitly recommended for both CIN and COUT with the LTC3410ESC6-1.2#TRPBF. These offer superior voltage coefficient and temperature stability versus Y5V/Z5U, ensuring consistent 4.7µF capacitance across –40°C to 85°C and rated voltage - critical for maintaining loop stability and low ripple performance.
How does Burst Mode operation affect output voltage ripple in LTC3410ESC6-1.2#TRPBF?
In Burst Mode, the LTC3410ESC6-1.2#TRPBF maintains ≤20mVP-P output ripple even at light loads (e.g., 1mA), achieved through controlled burst frequency and internal slope compensation. This is significantly lower than conventional PFM converters and avoids audible noise - verified in Figure 3410 G19 and specified in the Features list on page 1 of the datasheet.
LTC3410ESC6-1.2#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):
- 1.2V
- 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
LTC3410ESC6-1.2#TRPBF FAQ
1.How can I place an order for LTC3410ESC6-1.2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410ESC6-1.2#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 LTC3410ESC6-1.2#TRPBF reliable?
The price and inventory of LTC3410ESC6-1.2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410ESC6-1.2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3410ESC6-1.2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410ESC6-1.2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410ESC6-1.2#TRPBF?
LTC3410ESC6-1.2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410ESC6-1.2#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 LTC3410ESC6-1.2#TRPBF?
For technical support, including LTC3410ESC6-1.2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410ESC6-1.2#TRPBF requirements.
6.How does Aetrix verify that LTC3410ESC6-1.2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3410ESC6-1.2#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 LTC3410ESC6-1.2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3410ESC6-1.2#TRPBF?
All LTC3410ESC6-1.2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410ESC6-1.2#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 LTC3410ESC6-1.2#TRPBF part is unused and in its original packaging.
Return procedure for LTC3410ESC6-1.2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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