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Analog Devices Inc. LTC3410ESC6-1.2
- Part No.:
- LTC3410ESC6-1.2
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410ESC6-1.2.pdf
- Description:
- IC REG BUCK 1.2V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,956
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Product details
Overview
LTC3410ESC6-1.2 from Analog Devices (formerly Linear Technology) is a fixed-output, monolithic synchronous step-down DC/DC regulator delivering 1.2V at up to 300mA from a 2.5V–5.5V input. It features 2.25MHz constant-frequency current-mode control, 96% peak efficiency, ±2% output voltage accuracy, and operates in Burst Mode with 26µA quiescent current-ideal for Li-ion-powered portable instrumentation requiring stable low-voltage rail generation.
For engineers reviewing the LTC3410ESC6-1.2 datasheet, LTC3410ESC6-1.2 pinout, LTC3410ESC6-1.2 application, or LTC3410ESC6-1.2 equivalent, key selection factors include its SC70-6 package footprint, 1.2V fixed output with 0.8V internal reference, 100% duty-cycle dropout capability, and compatibility with ceramic input/output capacitors without external diode.
Technical Context
The LTC3410ESC6-1.2 implements a constant-frequency (2.25MHz), current-mode synchronous buck architecture with integrated P-channel high-side and N-channel low-side MOSFETs. Its feedback loop uses an internal 0.8V reference and senses VOUT directly at Pin 6 (VOUT), eliminating external resistor dividers required by adjustable versions.
Burst Mode operation reduces quiescent current to 26µA under light loads while maintaining low output ripple (20mVP-P). Overtemperature protection disables switching above ~150°C, and undervoltage lockout activates below 1.94V (falling) or 2.3V (rising).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±2% at 100mA load; enables direct powering of core logic or low-VCC analog circuits without trimming. |
| Max Output Current | 300mA continuous; supports moderate-power microcontrollers, sensors, or RF front-end bias rails. |
| Input Voltage Range | 2.5V to 5.5V; compatible with single-cell Li-ion (2.7–4.2V), USB 5V, or regulated 3.3V supplies. |
| Switching Frequency | 2.25MHz (typ); permits use of compact 2.2–4.7µH inductors and 4.7µF ceramic capacitors for minimal PCB area. |
| Quiescent Current | 26µA in Burst Mode; extends battery runtime in standby or sleep states of portable devices. |
| Duty Cycle Limit | 100% dropout operation; maintains regulation down to VIN ≈ VOUT + ILOAD × RDS(ON), critical for end-of-battery-life operation. |
| Thermal Resistance | θJA = 250°C/W (SC70-6); requires thermal-aware layout but supports 300mA at 70°C ambient without derating. |
Pinout & Package
Package: 6-lead SC70 (2.0mm × 1.25mm × 0.9mm, 0.65mm pitch), surface-mount, lead-free compatible.
| 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 GND pins reduce ground impedance and improve EMI performance; connect to common ground plane. |
| 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 capacitor placed adjacent to pin. |
| VOUT (Pin 6) | Fixed-output feedback | Internally connected to 0.8V reference via precision divider; connects directly to (+) terminal of COUT for remote sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode; improves efficiency >5% at medium loads and reduces thermal stress. |
| Ceramic capacitor stability | No ESR dependency for loop stability; enables ultra-low-noise, low-profile designs with X5R/X7R MLCCs. |
| Burst Mode ripple control | 20mVP-P output ripple at light loads; avoids audible noise and meets tight analog supply requirements. |
| Low dropout operation | 100% duty cycle allows VOUT regulation even when VIN drops within ~100mV of VOUT (at 300mA). |
| Integrated protection | Overtemperature shutdown and UVLO prevent damage during fault or brownout conditions. |
Applications
| Cellular Baseband Power | Wireless Modem Core Supply |
|---|---|
Use Scenario: Powers ARM-based baseband processor cores in GSM/UMTS handsets operating from single Li-ion cell. IC Role / Device Role / Timing Role: Primary 1.2V core regulator delivering clean, efficient, and dynamically responsive power during burst data transmission. Use Value: Burst Mode extends standby time beyond 10 days; 2.25MHz switching avoids interference with cellular RF bands. | Use Scenario: Supplies 1.2V to Wi-Fi/Bluetooth SoC in DSL/cable modems with intermittent high-throughput activity. IC Role / Device Role / Timing Role: Fixed-output buck converter providing fast transient response to MAC-layer traffic bursts. Use Value: 300mA capability handles peak PHY layer current; SC70 footprint saves space on dense modem PCBs. |
| Digital Camera Image Sensor Bias | Portable Medical Instrumentation |
Use Scenario: Generates 1.2V bias for CMOS image sensor digital backend in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Low-noise, low-ripple power source synchronized to sensor readout timing to avoid image artifacts. Use Value: 20mVP-P ripple prevents pixel-level noise; 26µA quiescent current preserves battery between photo captures. | Use Scenario: Powers ADC/DAC and microcontroller in handheld blood glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: Primary regulated rail ensuring accurate analog measurement integrity across battery discharge cycle. Use Value: ±2% output accuracy and 100% duty cycle maintain calibration validity down to 2.7V battery voltage. |
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, 2.05–6.0V input; higher fSW enables smaller L/C but higher gate charge loss. | Requires 2.05V min input; less suitable for deep Li-ion discharge (2.5V cutoff). | Prefer for space-constrained designs needing >3MHz switching; verify thermal margin at 300mA in DRY package. |
| MAX17222ETA+ | 1.2V fixed, 500mA, 2.5–5.5V input, 2.2MHz; includes power-good flag and tighter load regulation (±1%). | Higher IOUT rating and PG output enable more complex sequencing in multi-rail systems. | Choose when system requires power-good signaling or headroom for future load increases beyond 300mA. |
Compared with LTC3410ESC6-1.2, TPS62231DRYR offers higher frequency but reduced low-input-voltage headroom, while MAX17222ETA+ provides greater current capacity and sequencing support at the cost of larger footprint and higher BOM count.
Availability
LTC3410ESC6-1.2 is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, digital cameras, and portable medical instrumentation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LTC3410ESC6-1.2 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 continues its legacy of high-performance power management ICs with rigorous characterization and automotive-grade reliability testing.
The LTC3410 family was designed specifically for space-constrained, battery-powered portable electronics demanding high efficiency across wide load ranges-from µA standby to 300mA active operation-without compromising transient response or output accuracy.
FAQ
What is the maximum continuous output current of the LTC3410ESC6-1.2?
The LTC3410ESC6-1.2 delivers up to 300mA continuously under typical conditions (TA ≤ 85°C, proper layout, 4.7µH inductor, 4.7µF ceramic capacitors). Peak switch current is rated at 380mA minimum, and thermal limits (θJA = 250°C/W) allow full 300mA operation at 70°C ambient with 2.7V input. Derating is recommended above 85°C ambient or with poor airflow.
Does the LTC3410ESC6-1.2 require an external feedback resistor network?
No. The LTC3410ESC6-1.2 is a fixed-output variant with internal resistor division tied to the 0.8V reference, so Pin 6 functions as VOUT-not VFB-and connects directly to the positive terminal of the output capacitor. External resistors are unnecessary and would disrupt regulation.
Can the LTC3410ESC6-1.2 operate with input voltage as low as 2.5V while regulating 1.2V output?
Yes. The LTC3410ESC6-1.2 supports 100% duty-cycle operation, enabling regulation down to VIN ≈ VOUT + ILOAD × RDS(ON). At 300mA and 2.5V input, RDS(ON) of the P-channel switch is ~0.9Ω (typ), yielding ~1.0V dropout-well within specification. Efficiency drops in dropout but regulation is maintained.
What is the purpose of the dual GND pins (Pins 2 and 5) on the LTC3410ESC6-1.2 SC70 package?
The dual GND pins reduce ground path impedance and separate high-current power return (from SW and VIN) from sensitive signal ground (for RUN and VOUT sensing). This minimizes ground bounce, improves load transient response, and lowers EMI-critical for noise-sensitive analog or RF subsystems powered by the LTC3410ESC6-1.2.
How does Burst Mode operation affect output voltage ripple in the LTC3410ESC6-1.2?
In Burst Mode, the LTC3410ESC6-1.2 delivers energy in short, high-efficiency bursts followed by sleep intervals, resulting in 20mVP-P typical output ripple at light loads. This is significantly lower than conventional PFM regulators and avoids audible coil whine, making it suitable for powering noise-sensitive analog circuitry alongside digital loads.
LTC3410ESC6-1.2 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
LTC3410ESC6-1.2 FAQ
1.How can I place an order for LTC3410ESC6-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410ESC6-1.2 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 LTC3410ESC6-1.2 reliable?
The price and inventory of LTC3410ESC6-1.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410ESC6-1.2 is usually 5 days.
3.What payment methods are accepted for LTC3410ESC6-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410ESC6-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410ESC6-1.2?
LTC3410ESC6-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410ESC6-1.2 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 LTC3410ESC6-1.2?
For technical support, including LTC3410ESC6-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410ESC6-1.2 requirements.
6.How does Aetrix verify that LTC3410ESC6-1.2 is sourced from the original manufacturer or authorized distributors?
All LTC3410ESC6-1.2 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 LTC3410ESC6-1.2 meets industry standards.
7.What is the process for return or replacement of LTC3410ESC6-1.2?
All LTC3410ESC6-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410ESC6-1.2, 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 LTC3410ESC6-1.2 part is unused and in its original packaging.
Return procedure for LTC3410ESC6-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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