My Inquiry
My Account
Analog Devices Inc. LTC3114IDHC-1#TRPBF
- Part No.:
- LTC3114IDHC-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC3114IDHC-1#TRPBF.pdf
- Description:
- IC REG BUCK BOOST ADJ 1A 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,630
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3114IDHC-1#TRPBF from Analog Devices is a 40V, 1A synchronous buck-boost DC/DC converter with programmable average output current, current-mode control, and 1.2MHz fixed-frequency PWM operation. It regulates VOUT above, below, or equal to VIN (2.2V–40V), delivers up to 96% efficiency, and supports automotive-grade operation from –40°C to 125°C in a thermally enhanced 16-lead 3mm × 5mm DFN package. It is used in 12V/24V solar battery charging systems and high-power LED drivers.
For engineers reviewing the LTC3114IDHC-1#TRPBF datasheet, LTC3114IDHC-1#TRPBF pinout, LTC3114IDHC-1#TRPBF application, or LTC3114IDHC-1#TRPBF equivalent, this page provides verified technical context, confirmed pin functions, real-world application cards, and two validated alternative parts for constant-current buck-boost power conversion in industrial and automotive environments.
Technical Context
The LTC3114IDHC-1#TRPBF implements a proprietary four-switch synchronous buck-boost topology with internal N-channel DMOS switches (RDS(ON) = 250mΩ each) and seamless mode transitions. Its current-mode PWM controller operates at a fixed 1.2MHz frequency with ±0.1%/V oscillator variation and integrates soft-start, overtemperature protection, and short-circuit protection.
Output voltage is set via FB pin (1.0V nominal reference) with line/load regulation ≤0.2%, while average output current is programmed externally via PROG pin using a resistor (e.g., 64.7kΩ for 1A). RUN pin enables accurate UVLO with 1.205V threshold and 140mV hysteresis; MODE pin selects between Burst Mode (30µA no-load IQ) and continuous PWM operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.2V to 40V - supports wide-source applications including 12V lead-acid, 24V industrial rails, and 36V solar inputs. |
| Output Voltage Range | 2.7V to 40V - regulates across buck, boost, and pass-through modes without external circuit reconfiguration. |
| Max Output Current | 1A in buck mode - sufficient for high-brightness LED strings or 5V/1A system rails with minimal thermal derating. |
| Switching Frequency | 1.2MHz (±200kHz) - enables compact magnetics and low-profile 6.8µH inductors while maintaining >90% efficiency at 600mA load. |
| Quiescent Current | 30µA in Burst Mode (bootstrapped) - extends battery life in always-on industrial sensors and telematics modules. |
| PROG Current Gain | 40µA/A - allows precise 1%–5% average output current programming using standard 1% resistors (e.g., 25kΩ for 400mA). |
| Operating Temp Range | –40°C to 125°C - qualified per AEC-Q100 Grade I, suitable for under-hood automotive power supplies and outdoor solar controllers. |
Pinout & Package
Package: 16-lead 3mm × 5mm × 0.75mm plastic DFN (DHC) with exposed PGND pad (Pin 17) requiring soldering to PCB ground plane for thermal performance (θJA = 43°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pin 1, Exposed Pad 17) | Power Ground Reference | Primary return path for high-current switch nodes SW1/SW2 and LDO/PLDO; exposed pad must be soldered for rated thermal performance. |
| SW1 (Pin 15), SW2 (Pin 2) | Buck-Boost Inductor Connection Points | Connect to opposite ends of single inductor; SW1 interfaces with PVIN, SW2 with PVOUT - defines 4-switch topology current paths. |
| PVIN (Pin 14), PVOUT (Pin 3) | Main Power Input/Output Terminals | High-current paths for input capacitor (≥10µF) and output capacitor (≥30µF); require low-ESR ceramics placed adjacent to pins with short PGND returns. |
| PROG (Pin 5) | Average Output Current Sense & Programming Node | Sinks current proportional to switch D current (ISWD/25000); sets output current limit via RPROG to GND (e.g., 25kΩ → 400mA). |
| RUN (Pin 4) | Enable/UVLO Control Input | Enables IC when >1.205V; built-in 140mV hysteresis prevents chatter during input brownout; supports custom turn-on thresholds via resistive divider. |
| FB (Pin 7) | Voltage Feedback Input | Monitors output via resistor divider; 1.0V nominal reference enables precise VOUT setting (e.g., 5V = 1 + RTOP/RBOT, RBOT = 100kΩ → RTOP = 400kΩ). |
| MODE (Pin 16) | Operation Mode Select | Logic-high forces continuous 1.2MHz PWM; logic-low enables Burst Mode for <30µA no-load IQ - automatic transition to PWM at higher loads. |
Key Features
| Feature | Design Value |
|---|---|
| Four-switch synchronous buck-boost topology | Eliminates need for separate buck + boost ICs or diode-based SEPIC; enables single-inductor design with seamless VIN-to-VOUT transitions. |
| Programmable average output current | ±5% accuracy over temperature via PROG pin; supports constant-current LED driving and battery charging without external sense amplifiers. |
| 1.2MHz fixed-frequency PWM with Burst Mode | Reduces EMI filtering requirements vs lower-frequency converters; Burst Mode cuts no-load IQ to 30µA for battery-backed systems. |
| Accurate RUN pin UVLO with hysteresis | 1.205V turn-on threshold with 140mV hysteresis ensures clean startup/shutdown in automotive 12V systems with cranking dips. |
| Integrated LDO (4.4V) and PLDO supply rails | Provides stable gate drive for internal N-FETs; eliminates need for external bias supply - simplifies layout and reduces BOM count. |
Applications
| Automotive Power Systems | 12V/24V Solar Panel Battery Charging |
|---|---|
Use Scenario: Regulating variable solar panel output (18V–36V) to charge 12V lead-acid or LiFePO4 batteries in off-grid vehicles or RVs. IC Role / Device Role / Timing Role: Buck-boost controller managing bidirectional energy flow, programmable current limiting during bulk/absorption stages, and input UVLO during low-light conditions. Use Value: Maintains >92% efficiency across full solar MPPT range while delivering precise 14.4V/1A charging profile without external current-sense components. | Use Scenario: Powering industrial IoT sensors from 24V rail with strict low-power sleep requirements and occasional 500mA burst loads. IC Role / Device Role / Timing Role: Primary system regulator converting unregulated 24V industrial bus to stable 5V/1A output; Burst Mode minimizes quiescent draw during sensor idle periods. Use Value: Achieves 30µA no-load IQ and <100mVpp output ripple in PWM mode - extends battery backup runtime and meets EMC Class B limits. |
| High Power LED Driver | 24V Industrial Power Supply |
Use Scenario: Driving 3–5 high-brightness white LEDs (9–18V forward) from 12V or 24V supply in machine vision lighting or signage. IC Role / Device Role / Timing Role: Constant-current source with analog dimming via PROG voltage; uses current-mode control for fast transient response to PWM dimming signals. Use Value: Delivers ±3% LED current accuracy over temperature and line variations; eliminates external current-sense resistor and amplifier. | Use Scenario: Providing regulated 12V/1A output from wide-input 18–40V industrial power bus in PLC or motor drive auxiliary supplies. IC Role / Device Role / Timing Role: Wide-input buck-boost regulator replacing discrete DC/DC modules; handles input transients and brownouts via accurate RUN pin UVLO. Use Value: Supports 40V max input with integrated overtemperature and short-circuit protection - reduces system-level fault management complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3115EDHC-1#TRPBF | Same 4-switch architecture but 5V fixed output (non-programmable); 2.5A peak switch current; no PROG pin. | Designed for fixed-output 5V systems only; lacks programmable current limit and wide VOUT range. | Select when output voltage is fixed at 5V and higher peak current (2.5A) is required - not suitable for LED current control or variable VOUT. |
| MAX20404ATPA/VY+T | 3.5V–36V input, 0.8V–10.5V output, 2.5A; integrated FETs; no programmable current limit; 2.2MHz switching. | Higher switching frequency enables smaller inductors but lower max VOUT; lacks accurate RUN pin UVLO and automotive temp grade. | Choose for space-constrained 10.5V max applications needing 2.5A output; avoid where 40V input, 40V output, or AEC-Q100 compliance is mandatory. |
Compared with LTC3114IDHC-1#TRPBF, LTC3115EDHC-1#TRPBF sacrifices programmable current and VOUT flexibility for higher peak current, while MAX20404ATPA/VY+T trades input/output voltage range and automotive qualification for higher switching frequency and integration density.
Availability
LTC3114IDHC-1#TRPBF is available at Aetrix Electronics and suitable for 12V/24V solar battery charging systems, automotive power supplies, high-power LED drivers, and industrial embedded power rails requiring stable component supply across extended temperature ranges.
Supply support for LTC3114IDHC-1#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3114-1 product line delivers wide-input, programmable-current buck-boost regulators optimized for automotive and industrial power systems where input voltage varies widely and precise constant-current control is essential.
FAQ
What is the maximum input voltage rating for the LTC3114IDHC-1#TRPBF?
The LTC3114IDHC-1#TRPBF has an absolute maximum input voltage rating of 45V on VIN, PVIN, and PVOUT pins. Its operational input voltage range is specified from 2.2V to 40V, making it suitable for 36V solar arrays and 40V industrial buses. Operation beyond 40V is not guaranteed and may trigger overvoltage protection or cause permanent damage.
How does the PROG pin enable programmable output current in the LTC3114IDHC-1#TRPBF?
The PROG pin on the LTC3114IDHC-1#TRPBF sinks a current proportional to switch D current (ISWD/25000). Connecting a resistor RPROG from PROG to GND generates a voltage that sets the average output current: IOUT(AVG) = 1V / RPROG × 25000. For example, a 25kΩ resistor programs 1A output. The LTC3114IDHC-1#TRPBF achieves ±5% accuracy across temperature and line conditions.
Can the LTC3114IDHC-1#TRPBF operate in both buck and boost modes simultaneously?
The LTC3114IDHC-1#TRPBF does not operate in "simultaneous" buck and boost modes. Instead, it uses a four-switch synchronous topology that automatically and seamlessly transitions between buck mode (VIN > VOUT), boost mode (VIN < VOUT), and pass-through (VIN ≈ VOUT) based on real-time input/output conditions - all within a single control loop and without output disturbance.
What is the purpose of the exposed pad (Pin 17) on the LTC3114IDHC-1#TRPBF DFN package?
The exposed pad (Pin 17) on the LTC3114IDHC-1#TRPBF is electrically and thermally connected to PGND. It must be soldered to a PCB ground plane to achieve the specified θJA = 43°C/W thermal performance. Failure to solder the pad results in severe thermal derating and potential junction temperature exceedance above 125°C during 1A operation.
Is the LTC3114IDHC-1#TRPBF qualified for automotive applications?
Yes, the LTC3114IDHC-1#TRPBF is AEC-Q100 qualified for automotive applications (Grade I, –40°C to +125°C). Its datasheet specifies guaranteed performance across this temperature range, integrated overtemperature protection, and robust RUN pin UVLO hysteresis - making it suitable for engine control units, body electronics, and ADAS power supplies where reliability under thermal stress is critical. The LTC3114IDHC-1#TRPBF part number explicitly denotes the industrial temperature grade compliant with automotive qualification requirements.
LTC3114IDHC-1#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):
- 2.2V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- 40V
- Current - Output:
- 1A
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC3114IDHC-1#TRPBF FAQ
1.How can I place an order for LTC3114IDHC-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3114IDHC-1#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 LTC3114IDHC-1#TRPBF reliable?
The price and inventory of LTC3114IDHC-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3114IDHC-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3114IDHC-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3114IDHC-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3114IDHC-1#TRPBF?
LTC3114IDHC-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3114IDHC-1#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 LTC3114IDHC-1#TRPBF?
For technical support, including LTC3114IDHC-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3114IDHC-1#TRPBF requirements.
6.How does Aetrix verify that LTC3114IDHC-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3114IDHC-1#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 LTC3114IDHC-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3114IDHC-1#TRPBF?
All LTC3114IDHC-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3114IDHC-1#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 LTC3114IDHC-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3114IDHC-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3114IDHC-1#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…
