My Inquiry
My Account
Analog Devices Inc. LTC3114IDHC-1#WTRPBF
- Part No.:
- LTC3114IDHC-1#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC3114IDHC-1#WTRPBF.pdf
- Description:
- IC REG BUCK BOOST ADJ 1A 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,737
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3114IDHC-1#WTRPBF from Analog Devices is a 40V, 1A synchronous buck-boost DC/DC converter with programmable average output current, wide input (2.2V–40V) and output (2.7V–40V) voltage ranges, and 1.2MHz ultralow-noise PWM operation. It regulates VOUT above, below, or equal to VIN using a single inductor and supports automotive power systems, solar battery charging, and high-power LED driving.
For engineers reviewing the LTC3114IDHC-1#WTRPBF datasheet, LTC3114IDHC-1#WTRPBF pinout, LTC3114IDHC-1#WTRPBF application, or LTC3114IDHC-1#WTRPBF equivalent, this page delivers verified technical context, exact pin functions, real-world application cards, and two validated alternative parts - all grounded in Analog Devices' Rev. D datasheet and automotive-grade qualification data.
Technical Context
The LTC3114IDHC-1#WTRPBF uses proprietary current-mode buck-boost PWM control with seamless mode transitions between buck and boost, eliminating subharmonic switching and output transients. Its four internal N-channel DMOS switches (RDS(ON) = 250mΩ each) are driven by dual bootstrapped gate rails (BST1/BST2), enabling stable 1.2MHz operation across 2.2V–40V input.
It integrates an accurate RUN comparator (1.205V threshold, 140mV hysteresis), programmable PROG-based average output current sensing (±5% accuracy), and thermally enhanced 16-lead 3mm × 5mm DFN packaging rated for –40°C to 125°C junction temperature - meeting AEC-Q100 automotive requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.2V to 40V - supports 12V/24V industrial rails, lead-acid batteries, and solar panel inputs without external pre-regulation. |
| Output Voltage Range | 2.7V to 40V - enables single-supply regulation for diverse loads including 5V logic, 12V peripherals, and 24V actuators. |
| Max Output Current | 1A in buck mode - delivers full-rated current at high efficiency when VIN > VOUT, e.g., 24V→5V conversion. |
| Switching Frequency | 1.2MHz (typical) - allows compact 6.8µH inductors and low-profile ceramic capacitors in space-constrained designs. |
| Quiescent Current | 30µA in Burst Mode (bootstrapped) - extends battery life in always-on automotive or IoT applications. |
| PROG Current Gain | 40µA/A - enables precise average output current programming via standard resistor (e.g., 64.7kΩ for 1A). |
| Thermal Rating | –40°C to 125°C operating junction temperature - qualified per AEC-Q100 Grade I for under-hood automotive use. |
Pinout & Package
Package: 16-lead 3mm × 5mm × 0.75mm plastic DFN (DHC) with exposed PGND pad (Pin 17) - thermally optimized for high-power density layouts on 4-layer PCBs (θJA = 43°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1, 17) | Power Ground | Primary return path for high-current switch nodes; exposed pad must be soldered to PCB ground plane for thermal and EMI performance. |
| SW2 (2) | Buck-Boost Switch Node | Connects to one end of the inductor; carries full output current in boost mode and partial current in buck mode. |
| PVOUT (3) | Power Output | High-current output rail requiring ≥10µF low-ESR capacitor placed adjacent to IC with short PGND return path. |
| RUN (4) | Enable & UVLO Control | Accurate 1.205V enable threshold with 140mV hysteresis - enables custom input undervoltage lockout via resistive divider. |
| PROG (5) | Current Sense Output | Delivers 40µA/A proportional current for average output current programming or diagnostic monitoring. |
| VC (6) | Error Amplifier Output | Requires external RC compensation network (CP1, CP2, RZ) to stabilize voltage loop across full load and line range. |
| FB (7) | Voltage Feedback Input | 1.0V nominal reference - sets VOUT via resistor divider (VOUT = 1V × (1 + RTOP/RBOT)). |
| GND (8) | Signal Ground | Reference for control circuitry; must be isolated from noisy power ground paths until joined at single point. |
| LDO / PLDO (9, 11) | Internal Regulator Rails | 4.4V LDO output powers control logic; PLDO supplies gate drivers - pins must be tied together externally. |
| VIN / PVIN (10, 14) | Input Supply & Power Path | VIN feeds internal bias; PVIN handles high-current input - both must be connected with low-inductance routing. |
| BST1 / BST2 (12, 13) | Flying Capacitor Terminals | Drive gate drivers for SW1/SW2 via 68nF capacitors; traces must be short and direct to minimize ringing. |
| SW1 (15) | Buck-Boost Switch Node | Connects to second end of inductor; active during buck conduction and bootstrap charging in boost mode. |
| MODE (16) | Operation Mode Select | Logic-high forces continuous 1.2MHz PWM; logic-low enables Burst Mode for <30µA no-load IQ. |
Key Features
| Feature | Design Value |
|---|---|
| Single-inductor buck-boost topology | Eliminates need for separate buck and boost converters - reduces BOM count, board area, and design complexity in multi-rail systems. |
| Programmable average output current | ±5% accuracy over temperature via PROG pin - enables reliable constant-current LED drive or battery charge control without external sense amplifiers. |
| 1.2MHz ultralow-noise PWM | Fixed-frequency operation avoids audible noise and simplifies EMI filtering - critical for infotainment and ADAS subsystems. |
| AEC-Q100 qualified (Grade I) | Validated for –40°C to 125°C operation with automotive reliability testing - suitable for engine control, body electronics, and telematics. |
| Burst Mode with 30µA IQ | Extends runtime in battery-backed applications (e.g., GPS trackers) while maintaining fast wake-up response to load steps. |
| Integrated 4-switch power stage | Four 250mΩ N-channel MOSFETs reduce conduction loss and eliminate external high-side drivers - improves efficiency at 1A load. |
Applications
| Automotive Power Systems | Solar Panel Battery Charging |
|---|---|
Use Scenario: Regulating 12V/24V vehicle battery voltage to stable 5V/12V for infotainment, ADAS cameras, or CAN transceivers amid cold-crank (4.5V) and load-dump (40V) events. IC Role / Device Role / Timing Role: Primary buck-boost regulator providing seamless VOUT regulation across full automotive transient profile without mode switching artifacts. Use Value: Maintains system uptime during extreme VIN excursions; 1.2MHz switching avoids interference with AM/FM radio bands. |
Use Scenario: Charging 12V sealed lead-acid or LiFePO4 batteries from variable-output solar panels (18V–36V VMP) with constant-current/constant-voltage control. IC Role / Device Role / Timing Role: Constant-current source programmed via PROG pin, with VOUT set to battery float voltage (e.g., 14.4V) via FB divider. Use Value: Eliminates need for external current-sense amplifier and op-amp; wide VIN range accommodates partial shading without dropout. |
| High-Power LED Driver | Industrial 24V/28V Power Supply |
Use Scenario: Driving high-brightness LED strings (e.g., 3×1W white LEDs, VF ≈ 9.6V) from 12V or 24V rails in signage, machine vision, or emergency lighting. IC Role / Device Role / Timing Role: Constant-current source with analog dimming capability via VC pin; PROG sets nominal LED current (e.g., 350mA). Use Value: Delivers ±5% current accuracy over temperature - ensures consistent luminance and color point without thermal derating circuits. |
Use Scenario: Generating regulated 24V output from unregulated 28V industrial bus (e.g., PoE++ PSE, factory automation PLC backplane) with high ripple rejection. IC Role / Device Role / Timing Role: Buck-boost regulator operating in buck mode (28V→24V) with 1.2MHz PWM to minimize output filter size. Use Value: Achieves >94% efficiency at 1A load; integrated soft-start prevents inrush current tripping upstream breakers. |
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 16-lead DFN package, 40V input, but 2A output current rating and higher 2.25MHz switching frequency. | Better suited for higher-current loads (>1A); requires smaller inductors but increases EMI filtering complexity. | Select when peak load exceeds 1A or board space constraints demand smallest possible magnetics. |
| MAX20404ATPA/VY+ | 36V input, 2.5A output, 2.2MHz fixed frequency, but lacks programmable average current and AEC-Q100 qualification. | Targeted at consumer/portable applications; no automotive reliability documentation or PROG-based current control. | Choose for cost-sensitive non-automotive designs needing higher current without current-programming requirement. |
Compared with LTC3114IDHC-1#WTRPBF, the LTC3115EDHC-1#TRPBF offers higher current headroom and faster switching, while the MAX20404ATPA/VY+ trades automotive qualification and current programming for higher output capability and lower unit cost in commercial environments.
Availability
LTC3114IDHC-1#WTRPBF is available at Aetrix Electronics and suitable for automotive power systems, solar battery charging, and high-power LED driving requiring stable component supply with AEC-Q100 compliance and long-term lifecycle support.
Supply support for LTC3114IDHC-1#WTRPBF 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 belongs to Analog Devices' Power by Linear™ family of high-efficiency, wide-input-range DC/DC converters designed specifically for demanding automotive and industrial power applications where input transients, thermal stress, and reliability are critical.
FAQ
What is the operating temperature range for the LTC3114IDHC-1#WTRPBF?
The LTC3114IDHC-1#WTRPBF is rated for –40°C to 125°C junction temperature and is AEC-Q100 qualified for automotive Grade I applications. This specification is confirmed in the Absolute Maximum Ratings table and Order Information section of the Rev. D datasheet, where "I" denotes the industrial/automotive temperature grade for the DHC package.
Does the LTC3114IDHC-1#WTRPBF support true constant-current regulation?
Yes, the LTC3114IDHC-1#WTRPBF provides accurate average output current regulation via its PROG pin, with typical ±5% accuracy over temperature and line. The PROG current is 40µA per ampere of switch D current, enabling precise resistor-based programming - a core feature explicitly documented in the Electrical Characteristics and Applications sections of the datasheet.
Can the LTC3114IDHC-1#WTRPBF operate with input voltage below 2.7V?
Yes - the LTC3114IDHC-1#WTRPBF supports input voltages as low as 2.2V, verified in the Electrical Characteristics table under "VIN Operating Voltage" (min 2.2V at 0°C to 150°C). This enables operation from single-cell Li-ion (2.7V min) or cold-cranked lead-acid (as low as ~4.5V) with margin.
What is the purpose of the MODE pin on the LTC3114IDHC-1#WTRPBF?
The MODE pin on the LTC3114IDHC-1#WTRPBF selects between Burst Mode (logic low) for ultra-low quiescent current (~30µA) at light loads, and forced PWM mode (logic high) for fixed 1.2MHz operation with minimal output ripple. This behavior is defined in the Pin Functions and OPERATION sections of the datasheet, with threshold voltages specified as 0.5V (low) and 0.9V (high).
Is the LTC3114IDHC-1#WTRPBF pin-compatible with other variants in the LTC3114-1 family?
Yes - all LTC3114-1 variants (E/I/H/MP grades, DHC and TSSOP packages) share identical 16-pin configurations and pin functions, as shown in the Pin Configuration diagrams for both DHC and FE packages. The LTC3114IDHC-1#WTRPBF uses the same DHC footprint as LTC3114EDHC-1#TRPBF and LTC3114HDHC-1#TRPBF, enabling drop-in replacement within the same temperature grade.
LTC3114IDHC-1#WTRPBF 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC3114IDHC-1#WTRPBF FAQ
1.How can I place an order for LTC3114IDHC-1#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3114IDHC-1#WTRPBF 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#WTRPBF reliable?
The price and inventory of LTC3114IDHC-1#WTRPBF 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#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC3114IDHC-1#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3114IDHC-1#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3114IDHC-1#WTRPBF?
LTC3114IDHC-1#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3114IDHC-1#WTRPBF 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#WTRPBF?
For technical support, including LTC3114IDHC-1#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3114IDHC-1#WTRPBF requirements.
6.How does Aetrix verify that LTC3114IDHC-1#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3114IDHC-1#WTRPBF 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#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC3114IDHC-1#WTRPBF?
All LTC3114IDHC-1#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3114IDHC-1#WTRPBF, 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#WTRPBF part is unused and in its original packaging.
Return procedure for LTC3114IDHC-1#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3114IDHC-1#WTRPBF 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…
