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Analog Devices Inc. LTC3410ESC6
- Part No.:
- LTC3410ESC6
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410ESC6.pdf
- Description:
- IC REG BUCK ADJ 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,273
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Product details
Overview
LTC3410ESC6 from Analog Devices (formerly Linear Technology) is a high-efficiency, monolithic synchronous step-down DC/DC regulator in SC70-6 package, designed for single Li-Ion battery-powered systems. It delivers up to 300mA output current with 2.25MHz fixed switching frequency, 0.8V internal reference, and ±2% output voltage accuracy at 1.875V fixed output. Its 2.5V–5.5V input range and 100% duty-cycle low-dropout operation support portable instrumentation and wireless modems.
For engineers reviewing the LTC3410ESC6 datasheet, LTC3410ESC6 pinout, LTC3410ESC6 application, or LTC3410ESC6 equivalent, key selection criteria include burst-mode quiescent current (26µA), peak switch current (380mA), thermal resistance (θJA = 250°C/W), SC70-6 package footprint constraints, and fixed 1.875V output compatibility with low-voltage digital core rails.
Technical Context
The LTC3410ESC6 implements a constant-frequency, current-mode synchronous buck architecture with integrated P-channel main and N-channel synchronous switches. It uses slope-compensated peak-current control with patented compensation to maintain consistent inductor peak current across all duty cycles, including dropout conditions.
Burst Mode operation reduces quiescent current to 26µA at light loads by intermittently enabling switching cycles while maintaining regulation via output capacitor hold-up; shutdown draws <1µA. Oscillator frequency is internally fixed at 2.25MHz (±250kHz), enabling compact 2.2–4.7µH inductors and ceramic input/output capacitors without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.875V ±2% at 100mA load - ensures stable core supply for low-power microcontrollers and RF ICs. |
| Input Voltage Range | 2.5V to 5.5V - supports full discharge curve of single Li-Ion (2.7V–4.2V) with margin for transient spikes. |
| Switching Frequency | 2.25MHz (typ), 1.8–2.7MHz (min–max) - enables use of sub-5mm surface-mount inductors and minimizes EMI fundamental frequency. |
| Max Output Current | 300mA continuous at VIN = 3V - sufficient for baseband processors and sensor hubs in handheld devices. |
| Quiescent Current | 26µA in Burst Mode, <1µA in shutdown - extends battery life in standby and sleep modes. |
| Peak Switch Current | 380mA (min), 490mA (typ) - defines minimum inductor saturation current rating required for reliable operation. |
| Thermal Resistance | θJA = 250°C/W - requires minimal PCB copper area for thermal management in SC70-6 package. |
Pinout & Package
Package: SC70-6 (6-lead plastic SC70), 2.0mm × 1.25mm × 0.9mm profile, moisture sensitivity level 1.
| 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 - must not be left floating. |
| GND (Pins 2, 5) | Power ground return | Dual ground pins reduce ground impedance and improve thermal dissipation - both must be connected to low-impedance PCB ground plane. |
| SW (Pin 3) | Switch node | Connects to drain terminals of internal P- and N-channel MOSFETs - requires short, wide trace to minimize ringing and EMI. |
| VIN (Pin 4) | Main input supply | Accepts 2.5V–5.5V input; must be decoupled within 2mm to GND (Pin 2) with ≥4.7µF X5R/X7R ceramic capacitor. |
| VOUT (Pin 6) | Fixed-output feedback | Internally connected to 1.875V divider - no external resistor network needed; used for remote sensing in precision applications. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, increasing efficiency by ~8% at 100mA and reducing BOM count and board area. |
| Ceramic capacitor stability | No ESR dependency for loop stability - enables use of low-ESR, high-ripple-current X5R/X7R ceramics for <20mVP-P output ripple. |
| 100% duty-cycle operation | Maintains regulation down to VIN ≈ VOUT, extending usable battery life in deep-discharge states without brownout. |
| Overtemperature protection | Shuts down power switches when junction temperature exceeds ~150°C - prevents thermal runaway during sustained overload or poor heatsinking. |
| Low-noise Burst Mode | Delivers 26µA IQ with <20mVP-P output ripple - suitable for noise-sensitive analog and RF sections without requiring LDO post-regulation. |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor core rail during active call and deep-sleep modes. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated 1.875V at up to 300mA with dynamic load response. Use Value: 96% peak efficiency and 26µA Burst Mode IQ extend talk time and standby duration on single Li-Ion battery. | Use Scenario: Supplying 1.875V to Wi-Fi/Bluetooth SoC in portable hotspot device. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter with fast load transient recovery for bursty data transmission. Use Value: 2.25MHz switching enables small 2.2µH inductor and 4.7µF ceramic caps, minimizing solution size under 15mm². |
| Digital Cameras | Portable Instruments |
Use Scenario: Powering image signal processor (ISP) and memory interface during capture sequence. IC Role / Device Role / Timing Role: High-efficiency step-down regulator supporting rapid load steps from idle (1mA) to active (250mA). Use Value: Current-mode control provides excellent line/load transient response (<10µs recovery), minimizing voltage droop during frame capture. | Use Scenario: Regulating 1.875V supply for low-power MCU and precision ADC in handheld test equipment. IC Role / Device Role / Timing Role: Fixed-output buck converter with ±2% accuracy and low output ripple for analog measurement integrity. Use Value: Stable 0.8V reference and ceramic-compatible design ensure <0.5% total output error over temperature and line variation. |
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 | Fixed 1.8V output, 3MHz switching, 350mA IOUT, 16µA IQ - lower IQ but 0.125V lower output voltage. | Requires system-level tolerance for 1.8V vs 1.875V; better for ultra-low-power sleep but less margin for 1.8V nominal logic. | Select if 1.8V is acceptable and 3MHz allows smaller passive components; verify load-transient performance matches Burst Mode behavior. |
| MAX17222ETA+ | Fixed 1.85V output, 2MHz switching, 300mA IOUT, 1.6µA IQ - significantly lower IQ but no Burst Mode, higher output ripple. | Optimized for lowest possible IQ in always-on sensors; lacks Burst Mode's low-ripple light-load regulation. | Prefer for energy-harvesting or coin-cell applications where average IQ dominates; avoid where low-noise 1.875V rail is critical. |
Compared with TPS62231DRYR and MAX17222ETA+, the LTC3410ESC6 offers precise 1.875V output with industry-leading Burst Mode ripple control and proven robustness in Li-Ion portable designs - making it optimal where fixed-voltage accuracy, low-noise light-load operation, and thermal reliability in SC70 are jointly required.
Availability
LTC3410ESC6 is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, digital cameras, and portable instruments requiring stable component supply with guaranteed long-term sourcing.
Supply support for LTC3410ESC6 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.
The LTC3410 family was designed specifically for space-constrained, battery-powered portable electronics requiring high efficiency across wide load ranges - emphasizing low quiescent current, small-footprint integration, and ceramic-capacitor compatibility.
FAQ
What is the exact output voltage tolerance of the LTC3410ESC6 over temperature and line?
The LTC3410ESC6 guarantees ±2% output voltage accuracy over the full –40°C to +85°C operating temperature range and 2.5V–5.5V input voltage range. At 100mA load, the measured output is 1.837V (min) to 1.913V (max), with typical drift of ±0.005V/°C per the reference voltage vs. temperature curve. This ensures reliable operation for 1.8V nominal logic with 4% headroom.
Does the LTC3410ESC6 require an external Schottky diode?
No, the LTC3410ESC6 does not require an external Schottky diode. It integrates both a P-channel main switch and an N-channel synchronous rectifier, eliminating conduction losses and heat generation associated with external diodes. This improves efficiency by up to 8% at medium loads and reduces solution size and component count.
What is the maximum recommended inductor value for stable operation of the LTC3410ESC6?
The LTC3410ESC6 is optimized for inductors between 2.2µH and 4.7µH. While stable operation is maintained up to 10µH, values above 4.7µH increase ripple current decay time, degrading Burst Mode efficiency and transient response. The datasheet recommends 4.7µH (e.g., Panasonic ELT5KT4R7M) for best balance of size, efficiency, and load-step performance.
How does the RUN pin function, and what happens if it is left unconnected?
The RUN pin (Pin 1) enables or disables the LTC3410ESC6: >1.5V enables regulation; <0.3V forces shutdown with <1µA supply current. Leaving RUN floating causes undefined behavior - the part may oscillate between enable/disable states or remain latched off. A 100kΩ pull-up to VIN is recommended for default-enable operation.
Can the LTC3410ESC6 operate with input voltage below 2.5V?
No, the LTC3410ESC6 has an absolute minimum input voltage of 2.5V per its Absolute Maximum Ratings. Operation below this threshold risks improper biasing of internal circuitry and loss of regulation. Undervoltage lockout activates at ~2.3V (rising) and ~1.94V (falling), but sustained operation below 2.5V is not characterized or guaranteed.
LTC3410ESC6 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- 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 FAQ
1.How can I place an order for LTC3410ESC6 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410ESC6 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 reliable?
The price and inventory of LTC3410ESC6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410ESC6 is usually 5 days.
3.What payment methods are accepted for LTC3410ESC6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410ESC6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410ESC6?
LTC3410ESC6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410ESC6 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?
For technical support, including LTC3410ESC6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410ESC6 requirements.
6.How does Aetrix verify that LTC3410ESC6 is sourced from the original manufacturer or authorized distributors?
All LTC3410ESC6 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 meets industry standards.
7.What is the process for return or replacement of LTC3410ESC6?
All LTC3410ESC6 units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410ESC6, 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 part is unused and in its original packaging.
Return procedure for LTC3410ESC6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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