My Inquiry
My Account
Analog Devices Inc. LTC3113IDHD#TRPBF
- Part No.:
- LTC3113IDHD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC3113IDHD#TRPBF.pdf
- Description:
- IC REG BUCK BOOST ADJ 3A 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,739
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3113IDHD#TRPBF from Analog Devices (formerly Linear Technology) is a wide-input, synchronous 4-switch buck-boost DC/DC converter IC delivering up to 3A continuous output current with input and output voltage ranges of 1.8V–5.5V. It operates seamlessly across buck, buck-boost, and boost modes using a low-noise fixed-frequency architecture, making it suitable for RF power supplies and portable instrumentation requiring stable regulation when VIN ≈ VOUT.
For engineers reviewing the LTC3113IDHD#TRPBF datasheet, LTC3113IDHD#TRPBF pinout, LTC3113IDHD#TRPBF application, or LTC3113IDHD#TRPBF equivalent, key selection criteria include its programmable 300kHz–2MHz switching frequency, <1μA shutdown current, integrated soft-start, Burst Mode® operation for light-load efficiency, and thermal protection in the 16-lead DFN package.
Technical Context
The LTC3113IDHD#TRPBF implements a proprietary 4-switch synchronous topology with independent control of NMOS (SW1) and PMOS (SW2) pairs, enabling continuous conduction mode transitions between buck, buck-boost, and boost without inductor current discontinuity. Its voltage-mode error amplifier (100dB AVOL) drives VC with 500μA source/160μA sink capability for loop compensation.
It features dual current limiting: an average input current limit (7.8A typ.) enforced via FB injection and a fast peak limit (11.1A typ.) for hard short protection, plus reverse-current limiting (–1.0A typ.) on SW2 during fixed-frequency operation. Thermal shutdown activates at 155°C with hysteresis reset at 145°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, USB, and multi-rail systems without pre-regulation. |
| Output Voltage Range | 1.8V to 5.5V - adjustable via resistor divider on FB pin; regulated even when VIN = VOUT. |
| Max Continuous Output Current | 3A at VIN > 3.0V, VOUT = 3.8V - full load available only in PWM mode; Burst Mode reduces max load. |
| Switching Frequency | 300kHz to 2MHz - set by RT-to-SGND resistor; higher frequencies enable smaller magnetics and faster transient response. |
| Efficiency | Up to 96% - achieved with integrated 25–40mΩ MOSFETs and optimized gate drive; critical for battery runtime. |
| Shutdown Current | <1μA - enables long-term backup power retention in energy-sensitive applications. |
| Feedback Reference | 600mV ±2% - precise reference enables tight output regulation across temperature and load. |
Pinout & Package
Package: 16-lead (5mm × 4mm × 0.75mm) plastic DFN with exposed PGND pad (Pin 17), rated for –40°C to 125°C junction temperature. Thermal resistance θJA = 36.5°C/W; requires soldered exposed pad for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 3,4,5) | Power input supply node | Accepts 1.8V–5.5V; must be bypassed with ≥47μF low-ESR capacitor directly to PGND. |
| VOUT (Pins 1,2) | Regulated output voltage node | Delivers up to 3A; connects to output capacitor (100μF typical) and feedback divider. |
| SW1 (Pins 12,13,14) | High-side NMOS switch node (Switches A/B) | Connects to one end of power inductor; high di/dt path requiring minimized trace length and ground return. |
| SW2 (Pins 15,16) | Low-side NMOS/PMOS switch node (Switches C/D) | Connects to other end of inductor; carries bidirectional current; critical for reverse-current protection. |
| FB (Pin 10) | Feedback input for output voltage sensing | Monitors resistive divider; 600mV reference sets VOUT = 0.6V × (1 + R2/R1); Thevenin resistance >100kΩ required for current limit function. |
| VC (Pin 9) | Error amplifier output | Drives compensation network (R-C from VC to FB); 500μA source/160μA sink capability enables stable loop design. |
| RUN (Pin 11) | Active-high enable control | <0.3V disables IC with output disconnect; >1.2V enables with 2ms internal soft-start. |
| BURST (Pin 7) | Mode selection input | Low = fixed-frequency PWM (full 3A); High = Burst Mode® (low IQ, reduced max load). |
| RT (Pin 8) | Oscillator frequency programming | Resistor to SGND sets fSW: RT ≅ 90/fMHz kΩ; enables optimization for size vs. EMI vs. efficiency. |
| SGND (Pin 6) | Signal ground reference | Reference for FB divider, RT, VC compensation; must be isolated from PGND except at single-point star ground. |
| PGND (Pin 17, Exposed Pad) | Power ground return | Primary thermal path and high-current return for all switches; must be大面积 soldered to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Single-inductor 4-switch buck-boost topology | Enables seamless VIN-to-VOUT transitions without mode-hopping artifacts or output glitches. |
| Programmable 300kHz–2MHz switching frequency | Allows trade-off between inductor size (higher f = smaller L) and conduction losses (lower f = lower MOSFET RMS current). |
| Selectably enabled Burst Mode® operation | Reduces no-load input current to <40μA while maintaining regulation-critical for battery-backed systems. |
| Integrated soft-start (2ms nominal) | Prevents inrush current and output overshoot during power-up; active regardless of BURST pin state. |
| Output disconnect in shutdown | Isolates VOUT from VIN via internal switches-prevents backfeed and preserves backup rail integrity. |
| Thermal shutdown with hysteresis (155°C/145°C) | Protects against sustained overload; automatic recovery avoids manual reset requirement in embedded systems. |
Applications
| Wireless Modems | Portable Instrumentation |
|---|---|
|
Use Scenario: Powering LTE/5G modem baseband and RF sections from single-cell Li-ion (3.0–4.2V) while maintaining stable 3.3V or 3.8V rails. IC Role / Device Role / Timing Role: Primary buck-boost regulator providing regulated output despite varying battery voltage crossing VOUT threshold. Use Value: Eliminates need for separate buck + boost converters; maintains RF signal integrity via low-noise fixed-frequency PWM mode. |
Use Scenario: Supplying precision ADCs, DACs, and op-amps in handheld test equipment where input voltage drops from 4.2V to 3.0V during discharge. IC Role / Device Role / Timing Role: Main system power IC delivering clean, tightly regulated 3.3V/5.0V from shrinking battery voltage. Use Value: Sustains full 3A load capability down to 3.0V input; 600mV reference ensures <±1% output drift over temperature. |
| Backup Power Systems | Portable Barcode Readers |
|
Use Scenario: Maintaining real-time clock (RTC), SRAM, or microcontroller state during main power loss using supercapacitor or coin cell. IC Role / Device Role / Timing Role: Low-quiescent-current buck-boost controller sustaining regulated output from decaying backup source. Use Value: <1μA shutdown current extends backup runtime; output disconnect prevents leakage into depleted source. |
Use Scenario: Powering laser diode drivers, image sensors, and decode processors in handheld scanners operating from 2xAA or Li-ion. IC Role / Device Role / Timing Role: Compact, thermally efficient power stage delivering burst-mode efficiency during idle and full PWM current during scan. Use Value: 16-lead DFN fits space-constrained PCBs; integrated MOSFETs eliminate external FET layout complexity and parasitics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | Lower max output current (2.5A), fixed 2.5MHz frequency, no programmable RT, higher quiescent current (25μA in FPWM). | Best suited for compact, cost-sensitive designs where 2.5A suffices and fixed frequency simplifies EMI filtering. | Choose TPS63020DSJR if board area is critical and full 3A load is not required; verify thermal performance at 125°C ambient. |
| MAX20404ATPA/VY+ | Higher integration (integrated inductor option), 4A capability, but wider input range (2.5V–16V); different pinout and control logic. | Targeted at industrial IoT sensors needing higher input tolerance and simplified layout with module variants. | Choose MAX20404ATPA/VY+ only if input exceeds 5.5V or inductor integration is prioritized; not pin-compatible with LTC3113IDHD#TRPBF. |
Compared with TPS63020DSJR and MAX20404ATPA/VY+, the LTC3113IDHD#TRPBF offers superior light-load efficiency via selectable Burst Mode®, precise 600mV reference for tight regulation, and programmable frequency for optimal magnetics selection-making it preferred for RF and precision analog systems.
Availability
LTC3113IDHD#TRPBF is available at Aetrix Electronics and suitable for wireless modems, portable instrumentation, and backup power systems requiring stable component supply, extended temperature operation (–40°C to 125°C), and high-efficiency wide-VIN conversion.
Supply support for LTC3113IDHD#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, serving industrial, automotive, communications, and healthcare markets.
The LTC3113 belongs to Linear's high-efficiency power conversion product line, designed specifically for noise-sensitive, wide-input-range applications where seamless buck-boost operation and thermal robustness are essential.
FAQ
What is the maximum continuous output current capability of the LTC3113IDHD#TRPBF?
The LTC3113IDHD#TRPBF delivers up to 3A continuous output current when VIN > 3.0V and VOUT = 3.8V in PWM mode. At lower input voltages (e.g., VIN ≥ 1.8V, VOUT = 3.3V), the rated continuous output is 1.5A. Burst Mode® operation further reduces maximum deliverable current due to peak-current limiting constraints.
How does the LTC3113IDHD#TRPBF achieve seamless mode transitions between buck, buck-boost, and boost?
The LTC3113IDHD#TRPBF uses a proprietary 4-switch synchronous topology with dynamic phase control: as VIN decreases relative to VOUT, it smoothly transitions from buck (SWD always on) through buck-boost (SWA/SWC active) to boost (SWA always on), maintaining continuous inductor current and avoiding output voltage discontinuities or loop instability.
What is the purpose of the exposed pad (Pin 17) on the LTC3113IDHD#TRPBF DFN package?
The exposed pad of the LTC3113IDHD#TRPBF is electrically and thermally connected to PGND. It must be soldered to a large PCB copper area to provide the primary thermal dissipation path (θJA = 36.5°C/W) and low-impedance ground return for high-current switch nodes SW1 and SW2.
Can the LTC3113IDHD#TRPBF operate with input voltage equal to output voltage (VIN = VOUT)?
Yes-the LTC3113IDHD#TRPBF is explicitly designed to regulate output voltage when VIN equals VOUT, as well as when VIN is above or below VOUT. This is enabled by its 4-switch architecture and voltage-mode control, ensuring stable regulation without dropout or mode switching artifacts.
What protection features are integrated into the LTC3113IDHD#TRPBF?
The LTC3113IDHD#TRPBF integrates short-circuit protection via dual current limiting (7.8A average input limit + 11.1A peak limit), thermal shutdown (155°C activation), undervoltage lockout (1.6V UVLO threshold), reverse-current limiting (–1.0A typ.), and output disconnect during shutdown-all without requiring external components.
LTC3113IDHD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 300kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x4)
LTC3113IDHD#TRPBF FAQ
1.How can I place an order for LTC3113IDHD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3113IDHD#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 LTC3113IDHD#TRPBF reliable?
The price and inventory of LTC3113IDHD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3113IDHD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3113IDHD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3113IDHD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3113IDHD#TRPBF?
LTC3113IDHD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3113IDHD#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 LTC3113IDHD#TRPBF?
For technical support, including LTC3113IDHD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3113IDHD#TRPBF requirements.
6.How does Aetrix verify that LTC3113IDHD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3113IDHD#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 LTC3113IDHD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3113IDHD#TRPBF?
All LTC3113IDHD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3113IDHD#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 LTC3113IDHD#TRPBF part is unused and in its original packaging.
Return procedure for LTC3113IDHD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3113IDHD#TRPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
