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Analog Devices Inc. LTC3560ES6#TRMPBF
- Part No.:
- LTC3560ES6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC3560ES6#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 800MA TSOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC3560ES6#TRMPBF from Analog Devices (formerly Linear Technology) is a high-efficiency, monolithic synchronous step-down DC/DC regulator in a 6-lead ThinSOT package. It delivers up to 800mA output current with 2.25MHz fixed-frequency operation, 0.6V feedback reference, and 2.5V–5.5V input range-optimized for single-cell Li-Ion/Li-Polymer battery-powered portable electronics requiring low quiescent current (16μA operating, <1μA shutdown) and low dropout via 100% duty cycle.
For engineers reviewing the LTC3560ES6#TRMPBF datasheet, LTC3560ES6#TRMPBF pinout, LTC3560ES6#TRMPBF application, or LTC3560ES6#TRMPBF equivalent, key selection considerations include its constant-frequency current-mode architecture, external synchronization capability (1–3MHz), Burst Mode™ vs pulse-skipping mode control via SYNC/MODE pin, ±2% output voltage accuracy, and thermal performance in TSOT-23 at 250°C/W θJA.
Technical Context
The LTC3560ES6#TRMPBF implements a constant-frequency, current-mode buck topology with integrated P-channel main and N-channel synchronous MOSFETs. Its peak-current control loop uses slope-compensated sensing and an internal 0.6V reference to regulate output voltage via external resistive divider feedback on VFB.
It supports three operational modes selected by SYNC/MODE pin state: Burst Mode™ (pin grounded), pulse-skipping PWM (pin tied to VIN or >1.5V), or external clock synchronization (1–3MHz AC-coupled signal). Shutdown is controlled independently via RUN pin threshold (0.3–1.5V), with soft-start time of 0.9ms typical.
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 continuous - sufficient for baseband processors, RF transceivers, and camera modules in handheld devices. |
| Switching Frequency | 2.25MHz (typical), synchronizable 1–3MHz - enables use of ≤2.2μH inductors and compact ceramic capacitors. |
| Quiescent Current | 16μA in operation, <1μA in shutdown - extends battery runtime in always-on or low-duty-cycle systems. |
| Feedback Reference | 0.6V ±2% - allows precise low-voltage outputs (e.g., 1.2V, 1.5V, 1.8V) with standard resistor tolerances. |
| RDS(ON) (P-FET / N-FET) | 0.23Ω / 0.21Ω (typ) at 100mA - minimizes conduction loss at medium loads; increases with temperature and lower VIN. |
| Operating Temp Range | –40°C to +85°C (E-grade) - qualified for consumer and industrial portable equipment environments. |
Pinout & Package
Package: 6-lead ThinSOT™ (TSOT-23), 1mm profile, 2.9mm × 1.6mm footprint, exposed pad not present. 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) forces <1μA shutdown - must not float; requires pull-up/down for deterministic state. |
| GND (Pin 2) | Power and signal reference ground | Primary return path for VIN, SW, and feedback network - requires low-inductance connection to power plane. |
| SW (Pin 3) | Switch node | Connection point for external inductor - carries high di/dt square-wave current; layout critical for EMI and efficiency. |
| VIN (Pin 4) | Main input supply | Accepts 2.5–5.5V; requires ≥10μF ceramic decoupling close to pin to suppress switching transients. |
| VFB (Pin 5) | Feedback input | Senses divided output voltage; internal 0.6V reference sets regulation point - remote sensing supported via direct trace to COUT+. |
| SYNC/MODE (Pin 6) | Mode select & sync input | GND = Burst Mode™; VIN or >1.5V = pulse-skipping; 1–3MHz AC signal = external sync - no pull required; floating prohibited. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous FETs | Eliminates need for external Schottky diode - reduces BOM count, PCB area, and forward-drop losses. |
| Burst Mode™ operation | Maintains 16μA IQ and <20mVP-P ripple at light loads - ideal for standby power in battery-critical systems. |
| 100% duty cycle capability | Enables low-dropout operation down to VIN ≈ VOUT + ILOAD×RDS(ON) - extends usable battery life near end-of-discharge. |
| Ceramic capacitor stability | No ESR dependency in control loop - allows use of low-ESR, high-RMS-current X5R/X7R ceramics for minimal size and ripple. |
| Overtemperature protection | Thermal shutdown activates above ~150°C junction - prevents damage during sustained overload or poor heatsinking. |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor core and I/O rails in 3G/4G smartphones during active data transmission and idle listening. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 1.2V/1.8V/2.8V from single Li-Po cell; manages dynamic load steps up to 800mA. Use Value: Burst Mode™ maintains <16μA quiescent draw during sleep states, directly extending talk/listen time per charge cycle. |
Use Scenario: Supplying RF transceiver, MAC controller, and memory in LTE Cat-1/Cat-4 embedded modems deployed in IoT gateways. IC Role / Device Role / Timing Role: Main PMIC rail generator with fast transient response to bursty packet traffic; synchronized to system clock to avoid spectral interference. Use Value: 2.25MHz switching avoids AM/FM radio bands; low output ripple (<20mVP-P) prevents demodulation errors in sensitive RF front-ends. |
| Digital Still Cameras | Portable Instruments |
Use Scenario: Powering image sensor, ISP, and flash LED driver in compact digital cameras with rapid on/off cycling. IC Role / Device Role / Timing Role: High-efficiency buck converter enabling 100ms startup from shutdown (via RUN pin) and seamless mode transitions during capture sequences. Use Value: 0.9ms soft-start prevents inrush-induced voltage droop on shared battery rail; 100% duty cycle sustains output during low-VIN flash charging phase. |
Use Scenario: Regulating microcontroller, display, and analog front-end in handheld multimeters, gas detectors, and portable oscilloscopes. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete buck + LDO combos; provides clean, accurate voltage for precision ADC references and LCD bias. Use Value: ±2% output accuracy over –40°C to +85°C ensures measurement repeatability; low noise preserves SNR in analog signal chains. |
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 | 2.25MHz, 300mA max, 0.6V ref, 2.05–6.5V input - lower current rating, wider VIN, same package. | Not suitable for >300mA loads; better for ultra-low-power MCU cores than RF/baseband subsystems. | Select when load current ≤300mA and input may exceed 5.5V (e.g., USB-powered instruments). |
| MAX17532ATA+ | 2.1MHz, 1A, 0.8V ref, 4.5–28V input - higher voltage range, higher current, different feedback threshold. | Requires level-shifting feedback network; unsuitable for single-cell Li-Ion due to minimum 4.5V VIN. | Choose only for multi-cell or wide-input industrial applications - not drop-in for LTC3560ES6#TRMPBF designs. |
Compared with TPS62231DRYR and MAX17532ATA+, the LTC3560ES6#TRMPBF uniquely balances 800mA capability, single-cell compatibility (2.5–5.5V), and ultra-low IQ in TSOT-23 - making it irreplaceable in space-constrained, battery-optimized portable systems where both peak current and standby efficiency are critical.
Availability
LTC3560ES6#TRMPBF is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, and digital still cameras requiring stable component supply across production lifecycles and seasonal demand spikes.
Supply support for LTC3560ES6#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 full technical and manufacturing continuity for all Linear power products, including robust qualification and long-term reliability testing.
The LTC3560ES6#TRMPBF belongs to Linear's high-density, low-quiescent-current DC/DC regulator family - engineered specifically for battery-powered portable electronics demanding minimal board area, extended runtime, and seamless mode transitions under dynamic load.
FAQ
What is the maximum output current capability of the LTC3560ES6#TRMPBF?
The LTC3560ES6#TRMPBF is rated for up to 800mA continuous output current under typical conditions (TA = 25°C, VIN = 3.6V, VOUT = 1.8V). Peak inductor current capability reaches 1.5A (typ), but sustained output is limited by thermal dissipation in the TSOT-23 package - derating is required above 70°C ambient or at low input voltages where RDS(ON) rises.
How does the LTC3560ES6#TRMPBF achieve low quiescent current in light-load conditions?
The LTC3560ES6#TRMPBF achieves 16μA typical quiescent current using Burst Mode™ operation: during light loads, the IC enters sleep cycles where both power switches and most internal circuitry are disabled, waking only periodically to recharge the output capacitor. This is distinct from pulse-skipping mode, which maintains higher IQ but reduces output ripple - selectable via the SYNC/MODE pin.
Can the LTC3560ES6#TRMPBF be synchronized to an external clock, and what is the valid frequency range?
Yes, the LTC3560ES6#TRMPBF supports external synchronization via the SYNC/MODE pin. When driven with an AC-coupled square wave, it locks to frequencies between 1MHz and 3MHz - disabling Burst Mode™ and forcing pulse-skipping PWM operation. The internal oscillator remains disabled during sync; no additional components beyond a coupling capacitor are required.
What is the purpose of the RUN pin on the LTC3560ES6#TRMPBF, and what voltage thresholds enable/disable operation?
The RUN pin on the LTC3560ES6#TRMPBF provides hardware-controlled enable/disable functionality. Pulling RUN above 1.5V enables regulation with internal soft-start; pulling it below 0.3V forces shutdown drawing <1μA. Between 0.3V and 1.5V, the state is undefined - therefore, RUN must be actively pulled high (e.g., via resistor to VIN) or low (to GND), never left floating.
Does the LTC3560ES6#TRMPBF require output capacitor ESR for loop stability, and which capacitor types are recommended?
No, the LTC3560ES6#TRMPBF's current-mode control loop is inherently stable with zero-ESR output capacitors. Ceramic capacitors (X5R/X7R dielectric) are strongly recommended for both input and output - they provide low ESR, high RMS current handling, and minimal size. Tantalum or polymer capacitors may be used if ceramic placement is constrained, but ceramics deliver superior ripple suppression and reliability.
LTC3560ES6#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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC3560ES6#TRMPBF FAQ
1.How can I place an order for LTC3560ES6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3560ES6#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 LTC3560ES6#TRMPBF reliable?
The price and inventory of LTC3560ES6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3560ES6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3560ES6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3560ES6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3560ES6#TRMPBF?
LTC3560ES6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3560ES6#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 LTC3560ES6#TRMPBF?
For technical support, including LTC3560ES6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3560ES6#TRMPBF requirements.
6.How does Aetrix verify that LTC3560ES6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3560ES6#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 LTC3560ES6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3560ES6#TRMPBF?
All LTC3560ES6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3560ES6#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 LTC3560ES6#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3560ES6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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