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Analog Devices Inc. LTC3410BESC6-1.5#TRMPBF
- Part No.:
- LTC3410BESC6-1.5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3410BESC6-1.5#TRMPBF.pdf
- Description:
- IC REG BUCK 1.5V 300MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,695
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Product details
Overview
LTC3410BESC6-1.5#TRMPBF from Analog Devices (formerly Linear Technology) is a high-efficiency monolithic synchronous step-down DC/DC regulator in SC70-6 package, delivering up to 300mA output at 1.5V with 2.5V–5.5V input range, 2.25MHz fixed switching frequency, and ±2% output voltage accuracy. It enables compact, low-noise power for single Li-Ion battery systems requiring stable 1.5V rail.
For engineers reviewing the LTC3410BESC6-1.5#TRMPBF datasheet, LTC3410BESC6-1.5#TRMPBF pinout, LTC3410BESC6-1.5#TRMPBF application, or LTC3410BESC6-1.5#TRMPBF equivalent, key selection criteria include its 100% duty-cycle dropout capability, ceramic-capacitor compatibility, <1µA shutdown current, and internal P/N-channel MOSFETs eliminating external Schottky diodes.
Technical Context
The LTC3410BESC6-1.5#TRMPBF employs constant-frequency current-mode control with internal slope compensation, enabling stable operation across 0–100% duty cycle. Its architecture integrates a 0.75Ω P-channel main switch and 0.55Ω N-channel synchronous switch, supporting pulse-skipping mode at light loads to maintain regulation while minimizing output ripple.
Feedback is internally configured for fixed 1.5V output via an on-chip resistive divider referenced to 0.8V, eliminating external resistor networks. Overtemperature protection activates at ~150°C junction temperature, and undervoltage lockout triggers at 2.0V (rising) / 1.94V (falling) to prevent erratic startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% at 100mA load - ensures precise rail generation without external feedback components. |
| 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 reduces EMI fundamental frequency. |
| Peak Switch Current | 380mA minimum - defines maximum sustainable inductor peak current before current-limit activation. |
| Efficiency | Up to 96% - achieved via synchronous rectification and low RDS(ON) switches, minimizing conduction loss at medium loads. |
| Shutdown Current | <1µA - extends battery life during system sleep modes without requiring external enable sequencing. |
| Operating Temp | –40°C to +85°C - qualified for portable consumer and industrial ambient environments. |
Pinout & Package
Package: 6-lead plastic SC70 (SC6), 1.80–2.20mm × 1.15–1.35mm × 0.80–1.00mm height, 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 quiescent draw - requires explicit pull-up/down, not floating. |
| GND (Pins 2, 5) | Power and signal ground reference | Dual GND 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 inductor and internal P/N-MOSFET drains - high dv/dt node requiring short, wide trace routing away from sensitive analog nodes. |
| VIN (Pin 4) | Main input supply | Accepts 2.5–5.5V input; requires local 2.2µF ceramic decoupling capacitor placed adjacent to pin to minimize AC loop inductance. |
| VOUT (Pin 6) | Fixed-output feedback node | Internally tied to 1.5V output divider - serves as remote-sense point; connect directly to (+) terminal of output capacitor for best regulation accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, reducing BOM count and improving efficiency by 5–10% vs. asynchronous designs at 100–300mA loads. |
| 100% duty-cycle operation | Enables dropout mode down to VIN ≈ VOUT, extending usable battery life in Li-Ion systems by maintaining regulation until ~2.7V input. |
| Ceramic capacitor stability | Control loop is ESR-independent - allows use of low-ESR, high-frequency X5R/X7R ceramics for minimal output ripple and footprint. |
| Pulse-skipping mode | Maintains output regulation at light loads (<10mA) with low ripple and no audible noise - avoids discontinuous-mode ringing seen in forced-PWM regulators. |
| Integrated overtemperature protection | Thermal shutdown disables both switches above ~150°C junction temperature - prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| Cellular Telephones | Digital Still Cameras |
|---|---|
Use Scenario: Powering baseband processor core voltage rail in GSM/UMTS handsets operating from single Li-Ion battery. IC Role / Device Role / Timing Role: Primary 1.5V synchronous buck regulator providing regulated core supply with fast load-transient response. Use Value: 96% peak efficiency and 100% duty cycle extend talk time by >12% versus legacy linear regulators; 2.25MHz switching enables ultra-compact 2.2µH inductor placement. | Use Scenario: Supplying image sensor interface and ISP core logic in compact digital cameras with tight board space constraints. IC Role / Device Role / Timing Role: Fixed-output 1.5V DC/DC converter delivering clean, low-noise power with minimal output ripple (<10mVpp). Use Value: Pulse-skipping mode maintains regulation at standby currents (<1mA) without audible coil whine; SC70-6 footprint saves >30% area vs. SOIC-8 alternatives. |
| Wireless Modems | Portable Instruments |
Use Scenario: Generating 1.5V supply for Wi-Fi/BT radio transceivers in USB-powered broadband modems. IC Role / Device Role / Timing Role: High-frequency buck regulator interfacing directly with USB 5V input, supporting dynamic load steps up to 250mA. Use Value: Current-mode control delivers <50µs recovery from 50–250mA load transients; low 200µA operating quiescent current minimizes idle power draw. | Use Scenario: Powering microcontroller and ADC subsystems in handheld test equipment powered by replaceable alkaline or Li-Ion cells. IC Role / Device Role / Timing Role: Main 1.5V system rail regulator with robust UVLO (2.0V) and thermal protection for unattended field operation. Use Value: –40°C to +85°C rating ensures reliability across environmental extremes; shutdown current <1µA enables multi-year shelf life in battery-backed instruments. |
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 | Fixed 1.5V output, 2.05MHz switching, 300mA IOUT, 1.8–6.5V input - higher max input voltage but lower efficiency (93% typ) and no 100% duty cycle. | Requires external soft-start capacitor; lacks integrated thermal shutdown flag output. | Preferred when wider input range (up to 6.5V) is needed and 100% dropout is not required. |
| MAX17222ELT+T | Fixed 1.5V output, 2.5MHz switching, 300mA IOUT, 2.0–5.5V input - includes power-good indicator and tighter line regulation (±0.5%), but higher quiescent current (2.5µA shutdown). | Supports forced PWM mode only - no pulse-skipping, resulting in higher light-load ripple and potential audible noise. | Chosen when power-good signaling and superior line regulation outweigh need for ultra-low shutdown current. |
Compared with TPS62231DRVR and MAX17222ELT+T, the LTC3410BESC6-1.5#TRMPBF offers superior dropout performance (100% duty cycle), lowest shutdown current (<1µA), and ceramic-capacitor-optimized stability - making it optimal for battery-critical, space-constrained portable systems where runtime and PCB area are primary constraints.
Availability
LTC3410BESC6-1.5#TRMPBF is available at Aetrix Electronics and suitable for cellular telephones, digital still cameras, wireless modems, portable instruments, and DSL modems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LTC3410BESC6-1.5#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, serving industrial, automotive, communications, and consumer markets.
The LTC3410B series is part of Analog Devices' precision power conversion portfolio, designed specifically for space-constrained, battery-powered portable electronics demanding high efficiency, small solution size, and robust transient performance.
FAQ
What is the absolute maximum input voltage rating for the LTC3410BESC6-1.5#TRMPBF?
The LTC3410BESC6-1.5#TRMPBF has an absolute maximum input voltage of 6V. Exceeding this value, even momentarily, may cause permanent damage. The recommended operating range remains 2.5V to 5.5V per datasheet specifications, with typical use cases centered on single-cell Li-Ion (2.7V–4.2V) and USB-powered systems.
Does the LTC3410BESC6-1.5#TRMPBF require external feedback resistors to set the output voltage?
No. The LTC3410BESC6-1.5#TRMPBF is a fixed-output variant with an internal resistive divider configured for 1.5V regulation. Pin 6 is labeled VOUT (not VFB), and no external resistors are needed - simplifying layout and improving accuracy by eliminating resistor tolerance and temperature drift effects.
Can the LTC3410BESC6-1.5#TRMPBF operate with 100% duty cycle, and under what conditions?
Yes. The LTC3410BESC6-1.5#TRMPBF supports 100% duty cycle operation when input voltage approaches the 1.5V output level. This low-dropout mode maintains regulation down to ~2.7V input (with appropriate inductor and layout), significantly extending usable battery capacity in portable devices powered by single Li-Ion cells.
What type of output capacitors are recommended for the LTC3410BESC6-1.5#TRMPBF?
X5R or X7R dielectric ceramic capacitors are strongly recommended for the LTC3410BESC6-1.5#TRMPBF. These offer low ESR, high ripple-current capability, and stable capacitance over temperature/voltage - enabling minimal output ripple (<10mVpp) and compact design. Avoid high-voltage-rated Y5V/Z5U ceramics due to severe capacitance loss under bias.
How does the RUN pin function on the LTC3410BESC6-1.5#TRMPBF, and what happens if left unconnected?
The RUN pin (Pin 1) enables or disables regulation: >1.5V enables, <0.3V shuts down the device with <1µA supply current. Leaving RUN floating is prohibited - it may cause erratic enable/disable behavior or latch-up. A pull-up resistor to VIN or active control signal is mandatory for reliable operation.
LTC3410BESC6-1.5#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):
- 1.5V
- 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
LTC3410BESC6-1.5#TRMPBF FAQ
1.How can I place an order for LTC3410BESC6-1.5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3410BESC6-1.5#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 LTC3410BESC6-1.5#TRMPBF reliable?
The price and inventory of LTC3410BESC6-1.5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3410BESC6-1.5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3410BESC6-1.5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3410BESC6-1.5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3410BESC6-1.5#TRMPBF?
LTC3410BESC6-1.5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3410BESC6-1.5#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 LTC3410BESC6-1.5#TRMPBF?
For technical support, including LTC3410BESC6-1.5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3410BESC6-1.5#TRMPBF requirements.
6.How does Aetrix verify that LTC3410BESC6-1.5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3410BESC6-1.5#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 LTC3410BESC6-1.5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3410BESC6-1.5#TRMPBF?
All LTC3410BESC6-1.5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3410BESC6-1.5#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 LTC3410BESC6-1.5#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3410BESC6-1.5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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