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Analog Devices Inc. LTC3560IS6#TRMPBF
- Part No.:
- LTC3560IS6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC3560IS6#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 800MA TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,003
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Product details
Overview
LTC3560IS6#TRMPBF from Analog Devices (formerly Linear Technology) is a high-efficiency, 2.25MHz synchronous step-down DC/DC regulator optimized for single-cell Li-Ion/Li-Polymer battery-powered systems. It delivers up to 800mA output current with 95% peak efficiency, 0.6V feedback reference, and 100% duty-cycle low-dropout operation. Its primary circuit role is main power conversion in portable digital loads such as media players and DSL modems.
For engineers reviewing the LTC3560IS6#TRMPBF datasheet, LTC3560IS6#TRMPBF pinout, LTC3560IS6#TRMPBF application, or LTC3560IS6#TRMPBF equivalent, key selection criteria include input voltage range (2.5V–5.5V), quiescent current in Burst Mode (16μA), thermal performance in TSOT-23 (θJA = 250°C/W), and synchronization capability (1MHz–3MHz).
Technical Context
The LTC3560IS6#TRMPBF employs a constant-frequency, current-mode control architecture with internal P-channel and N-channel synchronous MOSFETs. It integrates slope compensation to prevent subharmonic oscillation above 40% duty cycle while maintaining full 1.5A peak inductor current capability across all operating conditions.
Its dual-mode operation-Burst Mode (for ultra-low IQ at light load) and pulse-skipping PWM (for low-noise, low-ripple performance)-is selected via the SYNC/MODE pin. The device supports external clock synchronization without disabling regulation, and features built-in overtemperature protection with thermal shutdown at ~150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports direct connection to single Li-Ion (2.7V–4.2V) or Li-Polymer batteries with margin for termination and aging. |
| Output Current | Up to 800mA continuous - sufficient for core logic rails in portable digital systems including baseband processors and camera modules. |
| Switching Frequency | 2.25MHz (typical), synchronizable 1MHz–3MHz - enables use of compact 1.0–2.2μH inductors and 10μF ceramic capacitors without compromising transient response. |
| Quiescent Current | 16μA in Burst Mode - extends battery runtime in standby or low-activity states (e.g., idle media player or modem sleep mode). |
| Feedback Reference | 0.6V ±2% - allows precise, low-output-voltage regulation (e.g., 1.2V, 1.3V, 1.8V) using standard resistor ratios without external references. |
| Efficiency | Up to 95% at 3.6VIN/1.8VOUT/300mA - minimizes thermal stress in space-constrained ThinSOT packages and preserves battery energy. |
| Duty Cycle | 100% - maintains regulation down to VIN ≈ VOUT + ILOAD × RDS(ON), critical for end-of-discharge operation in battery systems. |
Pinout & Package
The LTC3560IS6#TRMPBF is housed in a 6-lead Plastic TSOT-23 (ThinSOT™) package, 1mm profile, with exposed pad not electrically connected. Thermal resistance θJA = 250°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RUN (Pin 1) | Enable/Shutdown Control Input | Logic-high (>1.5V) enables regulation; logic-low (<0.3V) disables all switching and reduces supply current to <1μA. Must not be left floating. |
| GND (Pin 2) | Power Ground Reference | Primary return path for VIN, SW, and internal bias currents; requires low-inductance connection to PCB ground plane. |
| SW (Pin 3) | Switch Node | Connection point between internal P- and N-channel MOSFET drains; carries high di/dt square-wave current - must be routed short and wide. |
| VIN (Pin 4) | Main Input Supply | Connects to input capacitor (≥10μF ceramic); supplies gate drive and bias current - decoupling must be placed adjacent to this pin. |
| VFB (Pin 5) | Feedback Input | Monitors resistive divider output; regulates VOUT to 0.6V - remote sensing supported by routing divider directly to COUT (+) terminal. |
| SYNC/MODE (Pin 6) | Mode Selection & Clock Sync | Ground = Burst Mode; tied to VIN = pulse-skipping mode; 1–3MHz external clock = synchronized PWM - no floating allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates need for external Schottky diode, reducing BOM count and improving efficiency by >5% at medium loads. |
| Ceramic-capacitor stability | No ESR dependency in control loop - enables use of low-ESR, small-footprint X5R/X7R ceramics for minimal output ripple and board area. |
| Low-noise pulse-skipping mode | Disables Burst Mode during sync or high MODE pin, suppressing low-frequency ripple that interferes with audio codecs and RF receivers. |
| Integrated soft-start | 0.9ms typical VOUT ramp time - prevents inrush current into downstream capacitance and avoids brownout on shared rails. |
| Overtemperature protection | Thermal shutdown activates when junction exceeds ~150°C - protects device during sustained dropout or high ambient conditions. |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor core voltage (1.2V) and memory I/O (1.8V) from a single Li-Ion cell. IC Role / Device Role / Timing Role: Primary buck converter delivering regulated, low-noise DC power with fast load transient response to support burst-mode cellular transmission. Use Value: 95% efficiency at 300mA extends talk time; 2.25MHz switching avoids interference with GSM/UMTS receive bands. | Use Scenario: Supplying 3.3V rail to Wi-Fi/BT combo chip and Ethernet PHY in compact DSL/wireless gateway. IC Role / Device Role / Timing Role: Main system power regulator enabling simultaneous RF and wired interface operation from limited battery or wall-adapter input. Use Value: 16μA Burst Mode IQ preserves standby battery life; 100% duty cycle sustains operation during brownout events on unregulated adapters. |
| Digital Still Cameras | Portable Instruments |
Use Scenario: Generating 2.5V for image sensor analog front-end and 1.8V for digital signal processor in battery-powered DSC. IC Role / Device Role / Timing Role: Dual-rail power source with independent feedback paths, supporting rapid on/off cycling during capture sequences. Use Value: Low output ripple (<20mVP-P) prevents noise coupling into analog imaging chain; RUN pin enables hardware-controlled power gating. | Use Scenario: Providing stable 1.2V and 3.3V supplies for microcontroller, ADC, and display driver in handheld test equipment. IC Role / Device Role / Timing Role: High-accuracy, low-drift power management IC ensuring measurement integrity across temperature and battery discharge. Use Value: ±2% output voltage accuracy and 0.6V reference enable precise rail generation; -40°C to 125°C rating supports industrial environmental ranges. |
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 | 2.25MHz fixed frequency, 0.6V ref, but only 300mA rated output; lower IQ (18μA) but no 100% duty cycle. | Not suitable for >500mA loads or deep dropout; better for ultra-low-power sensor nodes than high-current portable systems. | Select only if load current ≤300mA and dropout headroom >300mV is guaranteed. |
| MAX17503GCU+T | Higher 2A rating, wider 4.5V–60V input, but larger 16-pin TQFN; no Burst Mode, higher IQ (100μA). | Targeted at industrial/high-voltage applications - over-engineered and cost-prohibitive for single-cell battery use. | Choose only when input exceeds 5.5V or output current demand exceeds 800mA. |
Compared with TPS62231DRVR and MAX17503GCU+T, the LTC3560IS6#TRMPBF uniquely balances 800mA capability, 16μA Burst Mode IQ, 100% duty cycle, and TSOT-23 footprint - making it optimal for space- and battery-life-constrained portable designs where both peak and light-load efficiency matter.
Availability
LTC3560IS6#TRMPBF is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, and portable instruments requiring stable component supply across extended temperature and long production lifecycles.
Supply support for LTC3560IS6#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 precision analog and power management product lines with full technical documentation and long-term support.
The LTC3560IS6#TRMPBF belongs to Linear's high-frequency monolithic buck regulator family, designed specifically for compact, battery-powered digital systems demanding high efficiency across full load range and robust thermal behavior in ultra-thin packages.
FAQ
What is the maximum continuous output current of the LTC3560IS6#TRMPBF?
The LTC3560IS6#TRMPBF delivers up to 800mA continuous output current under typical conditions (TA = 25°C, VIN = 3.6V, VOUT = 1.8V). Peak inductor current capability is 1.5A (typical), but sustained output is thermally limited by the TSOT-23 package - derating is required above 70°C ambient or below 3V input.
How does the SYNC/MODE pin affect LTC3560IS6#TRMPBF operation?
The SYNC/MODE pin selects operating mode: grounded → Burst Mode (16μA IQ); tied to VIN → pulse-skipping PWM (lower ripple, higher light-load IQ); driven with 1–3MHz external clock → synchronized PWM (no Burst Mode, fixed frequency). Leaving this pin floating is prohibited and may cause erratic startup or shutdown.
Can the LTC3560IS6#TRMPBF operate with ceramic input and output capacitors?
Yes - the LTC3560IS6#TRMPBF is explicitly designed for ceramic capacitor compatibility. Its current-mode control loop is stable with zero-ESR ceramics. Use X5R or X7R dielectrics; place ≥10μF ceramic CIN adjacent to VIN/GND pins and size COUT per ripple and transient requirements - no ESR-based compensation needed.
What is the purpose of the RUN pin on the LTC3560IS6#TRMPBF?
The RUN pin provides hardware enable/disable control for the LTC3560IS6#TRMPBF. Pulling it above 1.5V enables regulation; pulling below 0.3V forces full shutdown (<1μA supply current). It also initiates internal soft-start (0.9ms ramp) on enable. Floating RUN is forbidden - always tie to logic controller or pull-up/pull-down network.
Does the LTC3560IS6#TRMPBF support 100% duty cycle operation, and why does it matter?
Yes - the LTC3560IS6#TRMPBF supports true 100% duty cycle, allowing VOUT regulation even when VIN drops to within RDS(ON) × ILOAD of the output voltage. This is essential for maximizing usable battery capacity in single-cell Li-Ion systems, extending runtime by 10–15% compared to regulators lacking dropout capability.
LTC3560IS6#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 800mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC3560IS6#TRMPBF FAQ
1.How can I place an order for LTC3560IS6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3560IS6#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 LTC3560IS6#TRMPBF reliable?
The price and inventory of LTC3560IS6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3560IS6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3560IS6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3560IS6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3560IS6#TRMPBF?
LTC3560IS6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3560IS6#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 LTC3560IS6#TRMPBF?
For technical support, including LTC3560IS6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3560IS6#TRMPBF requirements.
6.How does Aetrix verify that LTC3560IS6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3560IS6#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 LTC3560IS6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3560IS6#TRMPBF?
All LTC3560IS6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3560IS6#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 LTC3560IS6#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3560IS6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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