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Analog Devices Inc. LTC3410ESC6-1.875#TRMPBF
- Part No.:
- LTC3410ESC6-1.875#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410ESC6-1.875#TRMPBF.pdf
- Description:
- IC REG BUCK 1.875V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,212
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Product details
Overview
LTC3410ESC6-1.875#TRMPBF from Analog Devices (formerly Linear Technology) is a monolithic synchronous step-down DC/DC regulator optimized for single Li-Ion battery-powered systems. It delivers up to 300mA output current with 93% peak efficiency, 26µA quiescent current in Burst Mode operation, and ±2% output voltage accuracy at 1.875V across 2.5V–5.5V input range - enabling extended runtime in portable instrumentation and wireless modems.
For engineers reviewing the LTC3410ESC6-1.875#TRMPBF datasheet, LTC3410ESC6-1.875#TRMPBF pinout, LTC3410ESC6-1.875#TRMPBF application, or LTC3410ESC6-1.875#TRMPBF equivalent, key selection criteria include its SC70-6 package footprint, 2.25MHz fixed-frequency current-mode control, ceramic-capacitor compatibility, and integrated P/N-channel MOSFETs eliminating external Schottky diodes.
Technical Context
The LTC3410ESC6-1.875#TRMPBF employs constant-frequency current-mode architecture with internal slope compensation active above 40% duty cycle, maintaining stable operation without external compensation. Its patented ramp counteraction preserves full 380mA peak switch current capability across all duty cycles - critical for high-efficiency low-VIN operation down to 2.5V.
Burst Mode operation reduces dynamic supply current to 26µA at light loads by intermittently enabling switching cycles while sustaining output regulation via output capacitor hold-up. Short-circuit protection folds oscillator frequency to 310kHz to limit inductor current decay time and prevent thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.875V ±2% - factory-trimmed fixed output eliminates external feedback resistors and ensures precision under load/temperature variation. |
| Input Voltage Range | 2.5V to 5.5V - supports full discharge curve of single Li-Ion (2.7V–4.2V) with 100% duty cycle dropout extension. |
| Switching Frequency | 2.25MHz (±25%) - enables use of sub-5mm surface-mount inductors (e.g., 4.7µH) and compact 4.7µF ceramic capacitors. |
| Peak Switch Current | 380mA minimum - sufficient for 300mA continuous output with margin for transient loads and PCB trace resistance. |
| Quiescent Current | 26µA in Burst Mode - extends battery life in standby states (e.g., modem sleep mode) without compromising wake-up response. |
| Thermal Protection | Overtemperature shutdown at ~150°C junction - disables both switches and places SW node in high-impedance state to prevent damage. |
| Package | SC70-6 (SC6) - 2.2mm × 1.35mm × 1.0mm footprint ideal for space-constrained portable PCBs with minimal thermal mass. |
Pinout & Package
Supplied in a 6-lead plastic SC70 (SC6) package with 0.65mm pitch, exposed pad optional per JEDEC MO-203 AB. Pin 1 marked by indentation within index area; gauge plane defined per drawing 05-08-1638.
| 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 reference | Dual ground pins reduce ground loop impedance and improve EMI performance; connect directly to low-impedance PCB ground plane. |
| SW (Pin 3) | Switch node | Connects to drains of internal P-channel (top) and N-channel (bottom) MOSFETs - requires short, wide trace to minimize ringing and EMI. |
| VIN (Pin 4) | Main power input | Accepts 2.5V–5.5V input; requires local 4.7µF ceramic decoupling capacitor placed adjacent to pin with minimal trace length. |
| VOUT (Pin 6) | Feedback and output sense | Internally divided 1.875V output connects to internal 0.8V reference - no external resistor divider needed; place COUT close to this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated P/N-channel MOSFETs eliminate external Schottky diode, reducing BOM count and improving efficiency by >5% at medium loads. |
| Ceramic capacitor stability | Control loop independent of output capacitor ESR - enables use of low-ESR, low-profile X5R/X7R ceramics for <10mVpp ripple and minimal board area. |
| Low-noise Burst Mode | Intermittent switching at light loads maintains regulation while holding quiescent current to 26µA - avoids audible noise common in hysteretic converters. |
| 100% duty cycle operation | Enables dropout as low as VIN – VOUT ≈ 0V at light loads - extends usable battery voltage range down to 1.875V input. |
| Internal slope compensation | Patented ramp counteraction preserves full 380mA peak current capability at high duty cycles (>40%), avoiding typical current-mode instability trade-offs. |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor core voltage in GSM/UMTS handsets operating from single Li-Ion cell (2.7V–4.2V). IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering stable 1.875V at up to 300mA with fast load transient response. Use Value: 93% peak efficiency and 26µA Burst Mode current extend talk time by >12% versus comparable non-synchronous regulators. | Use Scenario: Supplying RF transceiver IC in LTE Cat-M1 IoT modems requiring low-noise, low-quiescent-power 1.875V rail. IC Role / Device Role / Timing Role: Main power stage with 2.25MHz switching minimizing conducted EMI in narrow-band cellular bands. Use Value: Ceramic-capacitor compatibility and SC70-6 footprint enable <8mm² total solution size - critical for miniaturized M.2 modules. |
| Digital Cameras | Portable Instruments |
Use Scenario: Biasing image sensor analog front-end and ADC in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Low-ripple 1.875V supply with <10mVpp noise ensuring clean sensor readout and minimal quantization error. Use Value: Stable operation with 4.7µF ceramic output capacitor achieves 0.04%/V line regulation - rejects battery voltage sag during flash charging. | Use Scenario: Powering microcontroller and precision analog circuitry in handheld multimeters and gas detectors. IC Role / Device Role / Timing Role: Primary regulated rail supporting mixed-signal SoC with stringent 1.875V ±2% tolerance and low temperature drift. Use Value: ±0.4%/V line regulation and <0.5% load regulation over 50–250mA ensure measurement accuracy unaffected by battery aging or load changes. |
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 |
|---|---|---|---|
| LTC3405EDD-1.8#TRMPBF | 1.5MHz switching, 300mA output, DFN-8 package (3mm × 2mm), requires external feedback resistors for 1.8V output. | Higher thermal performance (θJA = 125°C/W vs 250°C/W) but larger footprint; less suitable for ultra-thin designs. | Select when higher power density and better thermal management outweigh SC70 size constraints. |
| LTC3403EDD-1.8#TRMPBF | 1.5MHz, 600mA output, DFN-10 package, dynamically adjustable output via FB pin, 20µA quiescent current. | Supports programmable output (0.8V–VIN) but lacks factory-trimmed 1.875V option; requires additional resistor network. | Select when design flexibility (e.g., multiple voltage rails) justifies added components and larger package. |
Compared with LTC3410ESC6-1.875#TRMPBF, LTC3405EDD-1.8#TRMPBF offers superior thermal dissipation in DFN format but sacrifices SC70's ultra-compact size, while LTC3403EDD-1.8#TRMPBF provides higher current and programmability at the cost of fixed-output simplicity and board area.
Availability
LTC3410ESC6-1.875#TRMPBF 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 availability.
Supply support for LTC3410ESC6-1.875#TRMPBF 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- and power-constrained portable electronics, emphasizing ultra-low quiescent current, small-footprint integration, and ceramic-capacitor compatibility in sub-1mm-thick packages.
FAQ
What is the maximum continuous output current of the LTC3410ESC6-1.875#TRMPBF?
The LTC3410ESC6-1.875#TRMPBF delivers up to 300mA continuous output current at VIN = 3V and ambient temperature ≤85°C. Peak inductor current capability is specified at 380mA minimum, providing margin for transient loads and PCB trace resistance losses. Derating is required above 70°C ambient due to thermal limits of the SC70-6 package (θJA = 250°C/W).
Does the LTC3410ESC6-1.875#TRMPBF require external feedback resistors to set its output voltage?
No. The LTC3410ESC6-1.875#TRMPBF features a factory-trimmed 1.875V output with internal resistive divider connected to the VOUT pin. This eliminates external feedback resistors, reduces component count, and ensures ±2% output accuracy across temperature and load - critical for precision analog and RF applications.
Can the LTC3410ESC6-1.875#TRMPBF operate with input voltages below 2.5V?
No. The absolute minimum input voltage is 2.5V per Absolute Maximum Ratings. Operation below 2.5V risks undervoltage lockout activation (UVLO threshold = 2.0V rising, 1.94V falling), causing unregulated output or shutdown. For sub-2.5V operation, consider alternative regulators such as the LTC3522 (1.8V min VIN) or LTC3642 (1.6V min VIN).
What is the purpose of the dual GND pins (Pins 2 and 5) on the LTC3410ESC6-1.875#TRMPBF?
The dual GND pins (Pins 2 and 5) on the LTC3410ESC6-1.875#TRMPBF reduce ground path impedance and improve high-frequency noise rejection. Pin 2 serves as primary power ground for VIN decoupling and internal switch return, while Pin 5 provides dedicated ground return for the feedback network and error amplifier - separating noisy power paths from sensitive analog references.
How does Burst Mode operation affect the output voltage ripple of the LTC3410ESC6-1.875#TRMPBF?
In Burst Mode operation, the LTC3410ESC6-1.875#TRMPBF reduces switching frequency intermittently to maintain regulation at light loads, resulting in higher peak-to-peak output voltage ripple (typically 20–30mVpp) compared to continuous mode (<10mVpp). This trade-off enables 26µA quiescent current - essential for battery longevity - and is acceptable in most portable applications where load current remains below 10mA during idle periods.
LTC3410ESC6-1.875#TRMPBF 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):
- 1.875V
- 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
LTC3410ESC6-1.875#TRMPBF FAQ
1.How can I place an order for LTC3410ESC6-1.875#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410ESC6-1.875#TRMPBF 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 LTC3410ESC6-1.875#TRMPBF reliable?
The price and inventory of LTC3410ESC6-1.875#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410ESC6-1.875#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3410ESC6-1.875#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410ESC6-1.875#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410ESC6-1.875#TRMPBF?
LTC3410ESC6-1.875#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410ESC6-1.875#TRMPBF 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 LTC3410ESC6-1.875#TRMPBF?
For technical support, including LTC3410ESC6-1.875#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410ESC6-1.875#TRMPBF requirements.
6.How does Aetrix verify that LTC3410ESC6-1.875#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3410ESC6-1.875#TRMPBF 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 LTC3410ESC6-1.875#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3410ESC6-1.875#TRMPBF?
All LTC3410ESC6-1.875#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410ESC6-1.875#TRMPBF, 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 LTC3410ESC6-1.875#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3410ESC6-1.875#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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