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Analog Devices Inc. LTC3410BESC6-1.8#TRMPBF
- Part No.:
- LTC3410BESC6-1.8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410BESC6-1.8#TRMPBF.pdf
- Description:
- IC REG BUCK 1.8V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,720
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Product details
Overview
LTC3410BESC6-1.8#TRMPBF from Analog Devices (formerly Linear Technology) is a monolithic synchronous step-down DC/DC regulator in SC70-6 package, delivering up to 300mA output at fixed 1.8V with 2.25MHz constant-frequency current-mode control. It operates from 2.5V–5.5V input, achieves up to 96% efficiency, supports 100% duty cycle for low-dropout operation, and requires no external Schottky diode-ideal for single-cell Li-ion portable systems such as digital still cameras and MP3 players.
For engineers reviewing the LTC3410BESC6-1.8#TRMPBF datasheet, LTC3410BESC6-1.8#TRMPBF pinout, LTC3410BESC6-1.8#TRMPBF application, or LTC3410BESC6-1.8#TRMPBF equivalent, key selection criteria include its fixed 1.8V output, SC70-6 thermal performance (θJA = 250°C/W), ±2% output voltage accuracy over temperature, shutdown current <1µA, and compatibility with ceramic input/output capacitors without ESR dependency.
Technical Context
The LTC3410BESC6-1.8#TRMPBF employs a constant-frequency, current-mode PWM architecture with internal P-channel and N-channel synchronous MOSFETs. Its 2.25MHz switching frequency enables compact 2.2µH inductors and 2.2µF ceramic capacitors, while slope compensation prevents subharmonic oscillation above 40% duty cycle-maintaining peak inductor current stability across all operating conditions.
It features pulse-skipping mode at light loads to minimize output ripple and quiescent current (200µA typical operating, <1µA in shutdown), integrated overtemperature protection (trip at ~150°C), and undervoltage lockout (UVLO rising threshold 2.0–2.3V). The fixed-output version uses an internal resistive divider tied to VOUT (Pin 6), eliminating external feedback components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% (measured at 100mA load, 2.5V–5.5V input range) |
| Max Output Current | 300mA continuous (limited by thermal design and 380mA min peak switch current) |
| Switching Frequency | 2.25MHz nominal (1.8–2.7MHz range; enables <2.5mm² inductor footprint) |
| Input Voltage Range | 2.5V to 5.5V (supports single Li-ion battery discharge profile) |
| Efficiency | Up to 96% at 250mA, VIN=3.6V, VOUT=1.8V (enables >10hr runtime in portable instruments) |
| Shutdown Current | <1µA (preserves battery life during system sleep modes) |
| Package | SC70-6 (1.8×1.2×0.9mm, θJA=250°C/W, lead-free #TRMPBF) |
Pinout & Package
SC70-6 plastic package: 1.8mm × 1.2mm × 0.9mm body, 0.65mm pitch, 6-pin surface-mount with exposed pad not present. Thermal resistance θJA = 250°C/W.
| 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 draw |
| GND (Pins 2, 5) | Power and signal ground | Dual ground pins reduce PCB trace inductance and improve thermal dissipation path |
| SW (Pin 3) | Switch node | Connects to internal P- and N-MOSFET drains; carries high di/dt switching current-requires short, wide layout |
| VIN (Pin 4) | Main power input | Accepts 2.5–5.5V; must be decoupled with ≥2.2µF ceramic capacitor placed adjacent to Pin 4 |
| VOUT (Pin 6) | Fixed-output feedback | Internally connected to 1.8V divider; no external resistor required-simplifies BOM and layout |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode-reduces board area and improves efficiency by ~5% vs asynchronous designs |
| Ceramic capacitor support | No ESR dependency in control loop-enables use of low-profile, high-RMS-current X5R/X7R ceramics for <10mVPP output ripple |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT-extends usable battery life in Li-ion systems by ~15% versus non-dropout regulators |
| Pulse-skipping mode | Reduces light-load output ripple vs burst mode-critical for noise-sensitive audio and RF subsystems |
| Integrated UVLO and OTP | Prevents malfunction during brown-out and thermal runaway-no external protection circuitry needed |
Applications
| Cellular Telephones | Digital Still Cameras |
|---|---|
Use Scenario: Powering baseband processor core voltage rail in GSM/UMTS handsets with dynamic load ranging 1mA–300mA. IC Role / Device Role / Timing Role: Primary 1.8V synchronous buck regulator supplying CPU I/O and memory interface. Use Value: 96% peak efficiency and <1µA shutdown current extend talk time by >20 minutes per charge cycle versus legacy solutions. | Use Scenario: Supplying image sensor analog front-end and ISP core logic in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Fixed 1.8V power stage with fast transient response for burst-mode image capture. Use Value: 2.25MHz switching minimizes inductor size to fit within 8mm × 8mm camera module footprint. |
| MP3 Players | Portable Instruments |
Use Scenario: Regulating DSP and DAC supply in battery-powered audio players with standby current <2mA. IC Role / Device Role / Timing Role: Low-noise 1.8V source enabling clean audio playback without switching artifacts. Use Value: Pulse-skipping mode maintains <5mVPP ripple at 10mA load-eliminates need for post-regulator LDO filtering. | Use Scenario: Powering microcontroller and precision ADC in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Main system rail regulator with stable 1.8V output under varying battery voltage (2.7V–4.2V). Use Value: ±2% output accuracy and 0.4%/V line regulation ensure consistent ADC reference performance across battery discharge. |
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 |
|---|---|---|---|
| TPS62231DRVR | 3MHz switching, 300mA, fixed 1.8V, 2.05–6.0V input, 18µA quiescent current | Higher IQ limits battery life in ultra-low-power standby; requires external soft-start capacitor | Preferred for higher-frequency designs needing smaller inductors where 18µA IQ is acceptable |
| MAX17222ELT+T | 1.2MHz, 500mA, fixed 1.8V, 2.0–5.5V input, 2.5µA IQ, integrated soft-start | Lower switching frequency increases inductor size; higher current rating adds margin but no efficiency gain at 300mA | Selected when extended input range (2.0V) and lower IQ than LTC3410B are critical |
Compared with TPS62231DRVR and MAX17222ELT+T, the LTC3410BESC6-1.8#TRMPBF offers superior light-load efficiency due to its <1µA shutdown and 200µA operating IQ, tighter output accuracy (±2% vs ±3%), and optimized 2.25MHz frequency for minimal passive component footprint in space-constrained Li-ion devices.
Availability
LTC3410BESC6-1.8#TRMPBF is available at Aetrix Electronics and suitable for cellular telephones, digital still cameras, MP3 players, portable instruments, and wireless modems requiring stable component supply with full production traceability and long-term lifecycle support.
Supply support for LTC3410BESC6-1.8#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 acquired Linear Technology in 2017 and maintains its high-performance power management portfolio with rigorous automotive- and industrial-grade qualification.
The LTC3410B series was designed specifically for space-constrained, battery-powered portable electronics requiring high efficiency, low quiescent current, and minimal external components-targeting applications where SC70 footprint and 2.25MHz operation deliver decisive PCB area advantage.
FAQ
What is the maximum recommended output current for LTC3410BESC6-1.8#TRMPBF under continuous operation?
The LTC3410BESC6-1.8#TRMPBF is rated for 300mA continuous output current at ambient temperatures ≤85°C with adequate PCB copper pour. Derating is required above 70°C ambient or with poor thermal layout; peak switch current capability is 380mA minimum, verified across input voltage and temperature ranges per datasheet Figure 1 and Electrical Characteristics table.
Does LTC3410BESC6-1.8#TRMPBF require external feedback resistors to set the output voltage?
No. The LTC3410BESC6-1.8#TRMPBF is a fixed-output variant with internal resistive divider connecting Pin 6 (VOUT) to the 0.8V reference. Unlike the adjustable LTC3410BE, it requires no external R1/R2 network-reducing BOM count and eliminating resistor tolerance errors affecting output accuracy.
Can LTC3410BESC6-1.8#TRMPBF operate with input voltage below 2.5V?
No. Absolute maximum ratings specify –0.3V to 6V, but functional operation requires VIN ≥2.5V per Electrical Characteristics. Undervoltage lockout activates below 2.0V (rising) and 1.94V (falling); attempting operation below 2.5V risks regulation loss, excessive dropout losses, and potential thermal violation due to increased RDS(ON).
What ceramic capacitor dielectric is recommended for input and output use with LTC3410BESC6-1.8#TRMPBF?
X5R or X7R dielectrics are explicitly recommended in the datasheet for both CIN and COUT due to their stable capacitance vs. temperature and bias voltage. These formulations avoid the severe capacitance loss seen in Y5V/Z5U types, ensuring consistent 2.2µF effective value across –40°C to +85°C and full input voltage range.
How does the pulse-skipping mode in LTC3410BESC6-1.8#TRMPBF differ from Burst Mode® operation?
Pulse-skipping in the LTC3410BESC6-1.8#TRMPBF reduces switching frequency only at very light loads to maintain regulation while minimizing output ripple-unlike Burst Mode®, which gates entire switching cycles and introduces higher low-frequency ripple. This makes pulse-skipping preferable for noise-sensitive analog circuits where sub-100kHz artifacts must be avoided.
LTC3410BESC6-1.8#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):
- 1.8V
- 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
LTC3410BESC6-1.8#TRMPBF FAQ
1.How can I place an order for LTC3410BESC6-1.8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410BESC6-1.8#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 LTC3410BESC6-1.8#TRMPBF reliable?
The price and inventory of LTC3410BESC6-1.8#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410BESC6-1.8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3410BESC6-1.8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410BESC6-1.8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410BESC6-1.8#TRMPBF?
LTC3410BESC6-1.8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410BESC6-1.8#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 LTC3410BESC6-1.8#TRMPBF?
For technical support, including LTC3410BESC6-1.8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410BESC6-1.8#TRMPBF requirements.
6.How does Aetrix verify that LTC3410BESC6-1.8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3410BESC6-1.8#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 LTC3410BESC6-1.8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3410BESC6-1.8#TRMPBF?
All LTC3410BESC6-1.8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410BESC6-1.8#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 LTC3410BESC6-1.8#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3410BESC6-1.8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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