My Inquiry
My Account
Analog Devices Inc. LTC3114EDHC-1#PBF
- Part No.:
- LTC3114EDHC-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC3114EDHC-1#PBF.pdf
- Description:
- IC REG BUCK BOOST ADJ 1A 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:548
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3114EDHC-1#PBF 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), supports wide output range (2.7V–40V), and delivers up to 96% efficiency in automotive and industrial power systems.
For engineers reviewing the LTC3114EDHC-1#PBF datasheet, LTC3114EDHC-1#PBF pinout, LTC3114EDHC-1#PBF application, or LTC3114EDHC-1#PBF equivalent, key selection criteria include programmable output current via PROG pin, Burst Mode® operation (30µA no-load IQ), accurate RUN pin UVLO threshold (1.205V typ), thermal protection, and DFN-16 (3mm × 5mm) package compatibility with AEC-Q100-compliant designs.
Technical Context
The LTC3114EDHC-1#PBF employs proprietary four-switch synchronous buck-boost topology with internal N-channel DMOS switches (250mΩ RDS(ON) each), enabling seamless mode transitions without subharmonics or output transients. Its average current-mode control loop uses FB (1.0V nominal) for voltage regulation and PROG pin current (40µA/A gain) for precise output current programming.
Operation spans 2.2V–40V input and 2.7V–40V output with 1.2MHz oscillator (±100kHz variation), Burst Mode® (30µA no-load IQ) or forced PWM mode via MODE pin, and integrated soft-start (2ms). Thermal shutdown, short-circuit protection, and accurate RUN pin (1.205V threshold, 140mV hysteresis) ensure robustness in 24V/28V industrial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.2V to 40V - supports 12V lead-acid, 24V industrial rails, and wide-range solar inputs without external pre-regulation |
| Output Voltage Range | 2.7V to 40V - enables single-inductor regulation across buck, boost, and pass-through configurations |
| Max Output Current | 1A in buck mode - sufficient for high-power LED drivers and battery charging at VIN > VOUT |
| Switching Frequency | 1.2MHz ±100kHz - balances small external inductor (6.8µH typical) and low EMI in noise-sensitive applications |
| Quiescent Current | 30µA in Burst Mode® (bootstrapped) - extends battery life in always-on industrial sensors and telematics |
| Efficiency | Up to 96% - minimizes thermal stress in enclosed enclosures and reduces heatsink requirements |
| Package | 16-lead 3mm × 5mm DFN - thermally enhanced (θJA = 43°C/W) with exposed PGND pad for PCB-level heat dissipation |
Pinout & Package
Package: 16-lead plastic DFN (3mm × 5mm × 0.75mm) with exposed PGND pad (Pin 17), rated for –40°C to +125°C junction temperature. Exposed pad must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1, 17) | Power Ground | Main return path for high-current switch nodes; exposed pad (Pin 17) is parallel PGND connection requiring soldering to PCB ground plane |
| SW2 (2) | Buck-Boost Switch Node | Connects to one end of inductor; drives output-side switching in boost/buck modes |
| PVOUT (3) | Power Output | High-current output rail; requires ≥10µF low-ESR capacitor placed adjacent to IC with short PGND return |
| RUN (4) | Enable / UVLO Control | Accurate 1.205V enable threshold with 140mV hysteresis; sets custom turn-on/off points via resistive divider from VIN |
| PROG (5) | Output Current Sense | Delivers 40µA per ampere of switch D current; used with resistor to ground for programmable average output current |
| VC (6) | Error Amplifier Output | Compensation node requiring external RC network (CP1, CP2, RZ) for loop stability |
| 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 tied to system ground, separate from PGND routing where possible |
| LDO (9) | Internal Bias Supply | Input for internal 4.4V LDO; requires ≥4.7µF bypass cap to GND and must connect to PLDO |
| VIN (10) | LDO Input Supply | Connects to PVIN; powers internal VCC regulator; requires local 1µF bypass if trace length exceeds 5mm |
| PLDO (11) | LDO Output / Gate Driver Rail | Supplies internal control logic and gate drivers; must connect to LDO pin |
| BST2 (12) | SW2 Gate Driver Boost | Connects via 68nF capacitor to SW2; generates floating rail for switch D gate drive |
| BST1 (13) | SW1 Gate Driver Boost | Connects via 68nF capacitor to SW1; generates floating rail for switch A gate drive |
| PVIN (14) | Power Input | Main high-current input rail; requires ≥10µF low-ESR capacitor with direct PGND via |
| SW1 (15) | Buck-Boost Switch Node | Connects to other end of inductor; drives input-side switching in buck/boost modes |
| MODE (16) | Operating Mode Select | Logic-high = forced PWM (1.2MHz); logic-low = Burst Mode® (auto-transition to PWM at high load) |
Key Features
| Feature | Design Value |
|---|---|
| Four-switch synchronous buck-boost topology | Enables continuous regulation across VIN < VOUT, VIN > VOUT, and VIN ≈ VOUT without mode-jump artifacts or output glitches |
| Programmable average output current | Set via single resistor on PROG pin (40µA/A gain); ±5% accuracy over temperature; supports LED driving and battery charging with tight current control |
| 1.2MHz fixed-frequency PWM + Burst Mode® | Reduces EMI in sensitive RF systems while maintaining 30µA no-load IQ in light-load conditions for energy-efficient standby operation |
| Integrated 4.4V LDO with PLDO gate driver supply | Eliminates need for external bias rail; PLDO powers all gate drivers, enabling full 40V operation without external level-shifting |
| AEC-Q100 qualified (Grade I) | Validated for automotive power systems including infotainment, ADAS sensors, and body electronics operating from –40°C to +125°C |
Applications
| Automotive Power Systems | High-Power LED Driver |
|---|---|
Use Scenario: Regulating 12V or 24V vehicle battery to stable 5V/12V for infotainment head units under cold-crank (4.5V) and load-dump (40V) conditions. IC Role / Device Role / Timing Role: Primary buck-boost regulator with programmable current limit and accurate RUN pin UVLO for controlled startup during battery recovery. Use Value: Seamless VOUT regulation across extreme VIN transients eliminates need for pre-boost or post-buck stages, reducing BOM count by 2–3 components. |
Use Scenario: Driving high-brightness LED strings (e.g., 3×1W LEDs @ 350mA) from variable 9–36V industrial supply. IC Role / Device Role / Timing Role: Constant-current source using PROG pin feedback; operates in buck mode at 12V input, boost mode at 9V input. Use Value: Programmable average current (±5% accuracy) ensures consistent LED brightness and lifetime across input voltage and temperature variations. |
| 12V/24V Solar Panel Battery Charging | 24V/28V Industrial Power Supply |
Use Scenario: Charging sealed lead-acid or LiFePO4 batteries from solar panels with VMPPT ranging from 18V to 36V. IC Role / Device Role / Timing Role: Buck-boost charger controller with programmable current limit and thermal foldback; uses RUN pin to disable during low-light conditions. Use Value: Wide 2.2V–40V input accommodates panel voltage drift; 1A output supports up to 12W charging without external MOSFETs. |
Use Scenario: Providing regulated 5V/3.3V rails for PLC I/O modules powered from unregulated 24V industrial bus with ±10% tolerance. IC Role / Device Role / Timing Role: Primary non-isolated DC/DC converter; operates in buck mode at nominal 24V input, handles brownouts down to 2.2V. Use Value: 96% peak efficiency and 30µA Burst Mode® IQ reduce thermal load in dense DIN-rail enclosures and extend uptime during low-power sleep states. |
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#PBF | Higher 60V input rating, 2A output capability, same 16-pin DFN package and PROG-based current programming | Supports 48V industrial and telecom inputs; not AEC-Q100 qualified | Select when input exceeds 40V or output current >1A is required; pin-compatible but requires layout review for higher current paths |
| MAX20406AATG+T | 36V max input, 2.5A output, 2.2MHz switching, integrated FETs, but no PROG-based current programming | Lacks programmable average output current; relies on external sense resistor and op-amp for current control | Choose for higher output current and smaller solution size where precise integrated current programming is not mandatory |
Compared with LTC3115EDHC-1#PBF and MAX20406AATG+T, the LTC3114EDHC-1#PBF uniquely combines AEC-Q100 qualification, 40V input, 1A output, and factory-trimmed PROG-based current programming in a thermally optimized DFN-making it optimal for automotive and industrial applications demanding accuracy, reliability, and compact layout.
Availability
LTC3114EDHC-1#PBF is available at Aetrix Electronics and suitable for automotive power systems, high-power LED drivers, 12V/24V solar battery chargers, and 24V/28V industrial power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for LTC3114EDHC-1#PBF 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 with precision power, signal chain, and RF solutions.
The LTC3114-1 product line delivers wide-input, programmable-current buck-boost regulators for harsh-environment applications where input voltage varies widely and precise current control is critical-such as automotive battery regulation and solar charge management.
FAQ
What is the maximum input voltage supported by the LTC3114EDHC-1#PBF?
The LTC3114EDHC-1#PBF supports an absolute maximum input voltage of 45V on VIN, PVIN, and PVOUT pins, with guaranteed operation from 2.2V to 40V. This 40V operating range enables use in 24V industrial systems, 12V automotive battery applications with load dump, and solar panel inputs without external clamping or pre-regulation stages.
How is output current programmed on the LTC3114EDHC-1#PBF?
Output current is programmed on the LTC3114EDHC-1#PBF using a resistor from the PROG pin to GND. The PROG pin delivers a current proportional to switch D current (40µA per ampere), so RPROG = 1V / (IOUT × 40µA/A). For example, a 25kΩ resistor sets 1A average output current. Factory trimming ensures ±5% accuracy across temperature.
Does the LTC3114EDHC-1#PBF support automotive-grade temperature operation?
Yes, the LTC3114EDHC-1#PBF is specified for –40°C to +125°C junction temperature and is AEC-Q100 qualified (Grade I). Its thermal design-including exposed PGND pad and 43°C/W θJA-ensures reliable operation in under-hood automotive environments and industrial enclosures without derating below 125°C.
What is the purpose of the MODE pin on the LTC3114EDHC-1#PBF?
The MODE pin on the LTC3114EDHC-1#PBF selects between Burst Mode® operation (MODE = low) for ultra-low quiescent current (30µA) at light loads, and forced PWM mode (MODE = high) for fixed 1.2MHz switching and minimal output ripple. The device automatically transitions to PWM mode under heavy load even when MODE is low.
Can the LTC3114EDHC-1#PBF regulate output voltage when input equals output?
Yes, the LTC3114EDHC-1#PBF regulates output voltage seamlessly when VIN equals VOUT due to its four-switch synchronous buck-boost architecture. Unlike traditional two-switch topologies, it avoids discontinuities, subharmonics, or output transients during pass-through operation-critical for noise-sensitive applications like automotive infotainment.
LTC3114EDHC-1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tube
- 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)
LTC3114EDHC-1#PBF FAQ
1.How can I place an order for LTC3114EDHC-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3114EDHC-1#PBF 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 LTC3114EDHC-1#PBF reliable?
The price and inventory of LTC3114EDHC-1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3114EDHC-1#PBF is usually 5 days.
3.What payment methods are accepted for LTC3114EDHC-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3114EDHC-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3114EDHC-1#PBF?
LTC3114EDHC-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3114EDHC-1#PBF 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 LTC3114EDHC-1#PBF?
For technical support, including LTC3114EDHC-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3114EDHC-1#PBF requirements.
6.How does Aetrix verify that LTC3114EDHC-1#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3114EDHC-1#PBF 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 LTC3114EDHC-1#PBF meets industry standards.
7.What is the process for return or replacement of LTC3114EDHC-1#PBF?
All LTC3114EDHC-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3114EDHC-1#PBF, 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 LTC3114EDHC-1#PBF part is unused and in its original packaging.
Return procedure for LTC3114EDHC-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3114EDHC-1#PBF 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…
