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Analog Devices Inc. LTC3560IS6#TRPBF
- Part No.:
- LTC3560IS6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC3560IS6#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 800MA TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,456
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Product details
Overview
LTC3560IS6#TRPBF from Analog Devices (formerly Linear Technology) is a monolithic 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, 2.25MHz fixed switching frequency, and ±2% output voltage accuracy across –40°C to 125°C. Its 100% duty cycle enables low-dropout operation critical for battery life extension in portable media players and wireless modems.
For engineers reviewing the LTC3560IS6#TRPBF datasheet, LTC3560IS6#TRPBF pinout, LTC3560IS6#TRPBF application, or LTC3560IS6#TRPBF equivalent, key selection criteria include its 2.5V–5.5V input range, 0.6V feedback reference enabling sub-1.8V outputs, Burst Mode™ operation with 16μA quiescent current, and TSOT-23-6 package compatibility with high-density portable layouts.
Technical Context
The LTC3560IS6#TRPBF employs a constant-frequency, current-mode control architecture with internal P-channel and N-channel MOSFETs. Peak inductor current is regulated via an error amplifier driving a current comparator, while slope compensation prevents subharmonic oscillation above 40% duty cycle without reducing peak current capability.
It supports three operating modes: Burst Mode™ (SYNC/MODE = GND), pulse-skipping PWM (SYNC/MODE = VIN), and external synchronization (1MHz–3MHz clock applied to SYNC/MODE). Shutdown draws <1μA, and soft-start ramps VOUT over 0.9ms to limit inrush current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports full discharge curve of single Li-Ion/Li-Polymer cells without brownout. |
| Output Current | Up to 800mA - sufficient for core logic rails in digital still cameras and cellular baseband processors. |
| Switching Frequency | 2.25MHz (typical), synchronizable 1MHz–3MHz - enables use of ≤2.2μH inductors and 10μF ceramic capacitors. |
| Quiescent Current | 16μA in Burst Mode™ - extends battery runtime in standby states of portable instruments. |
| Feedback Reference | 0.6V ±2% - allows precise programming of low output voltages (e.g., 1.2V, 1.5V) using standard resistor ratios. |
| Efficiency | Up to 95% at 3.6VIN/1.8VOUT/300mA - minimizes thermal load in thermally constrained ThinSOT™ packages. |
| Operating Temp | –40°C to +125°C - qualified for industrial-grade embedded applications requiring extended temperature reliability. |
Pinout & Package
Package: 6-lead TSOT-23 (ThinSOT™), 1mm profile, 2.9mm × 1.6mm footprint - optimized for space-constrained portable PCBs with minimal thermal mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RUN (Pin 1) | Enable/Shutdown Control | Logic-high (>1.5V) enables regulation; logic-low (<0.3V) disables all circuitry and reduces supply current to <1μA. |
| GND (Pin 2) | Power Ground Reference | Primary return path for VIN, SW, and feedback network - must be low-impedance and directly connected to power plane. |
| SW (Pin 3) | Switch Node | Drain connection of internal P- and N-channel MOSFETs - requires short, wide trace to minimize EMI and switching losses. |
| VIN (Pin 4) | Main Input Supply | Connects to battery or source rail; requires ≥10μF ceramic decoupling capacitor placed adjacent to pin. |
| VFB (Pin 5) | Feedback Input | Monitors resistive divider output; regulates VOUT by comparing to 0.6V reference - enables remote sensing. |
| SYNC/MODE (Pin 6) | Mode Selection & Sync Input | GND = Burst Mode™; VIN = pulse-skipping; 1–3MHz square wave = synchronized PWM - no pull-up/down required. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Eliminates external Schottky diode - reduces conduction loss and improves light-load efficiency by >5% vs asynchronous designs. |
| 100% Duty Cycle Operation | Enables dropout regulation down to VIN – ILOAD×RDS(ON) - sustains output during battery voltage sag below target VOUT. |
| Ceramic Capacitor Stability | No ESR dependency in control loop - allows use of low-ESR X5R/X7R ceramics for <20mVP-P ripple and compact BOM. |
| Overtemperature Protection | Thermal shutdown at ~150°C junction - latches off both MOSFETs to prevent damage during sustained overload or poor heatsinking. |
| Low-Noise Pulse-Skipping Mode | Disables Burst Mode™ when synchronized - eliminates low-frequency ripple that interferes with audio codec power rails. |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor core voltage (1.2V) from single Li-Ion cell under dynamic load (10mA–600mA). IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated, low-noise DC supply with fast transient response. Use Value: 16μA quiescent current in Burst Mode™ extends standby time; 2.25MHz switching avoids AM radio band interference. | Use Scenario: Generating 3.3V I/O rail for LTE/Wi-Fi transceiver modules in compact USB dongles. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter with external sync capability to align switching edges with system clock. Use Value: Synchronization to 2MHz system clock eliminates beat frequencies; ±2% VOUT accuracy ensures reliable digital interface timing margins. |
| Digital Still Cameras | Portable Instruments |
Use Scenario: Supplying image sensor analog bias (2.8V) and digital core (1.8V) from shared battery rail. IC Role / Device Role / Timing Role: Dual-rail support via resistor-programmable outputs; low output ripple preserves analog signal integrity. Use Value: <20mVP-P ripple in Burst Mode™ prevents noise coupling into CCD/CMOS analog front-end circuits. | Use Scenario: Providing stable 1.5V supply for microcontroller and precision ADC in handheld test equipment. IC Role / Device Role / Timing Role: Industrial-grade regulator maintaining regulation across –40°C to +125°C ambient extremes. Use Value: Guaranteed performance over full temperature range eliminates calibration drift; 0.6V reference enables accurate low-voltage scaling. |
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 | 3MHz fixed frequency, 600mA output, 1.8V–6.5V input, 0.6V reference - lower max current, wider input range. | Optimized for higher-frequency, lower-current apps (e.g., wearables); lacks 100% duty cycle and Burst Mode™. | Select when board space demands >3MHz operation and load stays <600mA; verify thermal margin at 125°C. |
| MAX17503GCU+T | 2.2MHz, 1.2A output, 4.5V–36V input, adjustable soft-start - higher voltage/current, larger package (16-pin TQFN). | Targeted at industrial/high-voltage apps; not pin-compatible and requires external MOSFETs. | Choose only if input exceeds 5.5V or output current >800mA is needed; redesign PCB layout required. |
Compared with TPS62231DRYR and MAX17503GCU+T, the LTC3560IS6#TRPBF uniquely balances ultra-low quiescent current (16μA), 100% duty cycle, and industrial temperature rating in a 6-pin TSOT-23 - making it irreplaceable for space- and battery-life-constrained portable designs operating near battery minimum voltage.
Availability
LTC3560IS6#TRPBF is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, and portable instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC3560IS6#TRPBF 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 LTC3560IS6#TRPBF belongs to Linear's ThinSOT™-optimized power management portfolio, designed specifically for battery-powered portable electronics demanding ultra-low IQ, small footprint, and robust thermal performance.
FAQ
What is the maximum continuous output current of the LTC3560IS6#TRPBF?
The LTC3560IS6#TRPBF delivers up to 800mA continuous output current under typical conditions (VIN = 3.6V, VOUT = 1.8V, TA = 25°C, with proper thermal layout). At elevated temperatures or higher duty cycles (e.g., dropout), derating applies - peak inductor current is limited to 1.5A (typical), and thermal limits constrain sustained current in high-ambient environments. The LTC3560IS6#TRPBF datasheet specifies IPK = 1.0–2.0A depending on VIN and duty cycle.
Does the LTC3560IS6#TRPBF require an external Schottky diode?
No, the LTC3560IS6#TRPBF 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 reverse recovery issues associated with discrete diodes. This integration directly enables its 95% peak efficiency and simplifies PCB layout - a key advantage confirmed in the LTC3560IS6#TRPBF functional diagram and Applications Information section.
How is the output voltage programmed on the LTC3560IS6#TRPBF?
The output voltage of the LTC3560IS6#TRPBF is set using an external resistive divider connected between VOUT and GND, with the midpoint fed to the VFB pin. The formula is VOUT = 0.6V × (1 + R2/R1), where R2 connects to VOUT and R1 connects to GND. This 0.6V reference allows precise generation of common low voltages (e.g., 1.2V, 1.5V, 1.8V) using standard 1% resistors - a design method explicitly illustrated in Figure 2 of the LTC3560IS6#TRPBF datasheet.
What is the purpose of the SYNC/MODE pin on the LTC3560IS6#TRPBF?
The SYNC/MODE pin on the LTC3560IS6#TRPBF serves dual functions: mode selection and external clock synchronization. Grounding it enables Burst Mode™ operation (16μA IQ); connecting it to VIN selects pulse-skipping PWM; applying a 1MHz–3MHz square wave synchronizes switching frequency. This pin directly controls operational behavior - no external components are needed, and floating is prohibited per the LTC3560IS6#TRPBF Pin Functions description.
Is the LTC3560IS6#TRPBF compatible with ceramic output capacitors?
Yes, the LTC3560IS6#TRPBF is fully compatible with ceramic output capacitors. Its current-mode control loop does not rely on capacitor ESR for stability, allowing use of low-ESR X5R/X7R ceramics to achieve <20mVP-P ripple and compact form factor. The LTC3560IS6#TRPBF Applications Information section explicitly recommends ceramic capacitors and provides layout guidance to avoid input ringing - confirming direct compatibility without compensation changes.
LTC3560IS6#TRPBF 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#TRPBF FAQ
1.How can I place an order for LTC3560IS6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3560IS6#TRPBF 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#TRPBF reliable?
The price and inventory of LTC3560IS6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3560IS6#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3560IS6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3560IS6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3560IS6#TRPBF?
LTC3560IS6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3560IS6#TRPBF 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#TRPBF?
For technical support, including LTC3560IS6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3560IS6#TRPBF requirements.
6.How does Aetrix verify that LTC3560IS6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3560IS6#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3560IS6#TRPBF?
All LTC3560IS6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3560IS6#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LTC3560IS6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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