My Inquiry
My Account
Analog Devices Inc. LTC3114HFE-1#PBF
- Part No.:
- LTC3114HFE-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
LTC3114HFE-1#PBF.pdf
- Description:
- IC REG BUCK BOOST ADJ 1A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:767
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3114HFE-1#PBF from Analog Devices is a 40V, 1A synchronous buck-boost DC/DC converter with programmable average output current, 1.2MHz fixed-frequency PWM operation, and AEC-Q100 qualification for automotive power systems. It regulates VOUT above, below, or equal to VIN (2.2V–40V), delivers up to 96% efficiency, and supports wide-output-range LED driving and battery charging.
For engineers reviewing the LTC3114HFE-1#PBF datasheet, LTC3114HFE-1#PBF pinout, LTC3114HFE-1#PBF application, or LTC3114HFE-1#PBF equivalent, this page provides verified technical context, validated pin functions, confirmed thermal specs (–40°C to 150°C), real-world efficiency curves, and two rigorously cross-checked alternative parts for automotive-grade buck-boost design.
Technical Context
The LTC3114HFE-1#PBF implements proprietary current-mode buck-boost control with seamless mode transitions between buck and boost-no subharmonics or output transients. Its four internal N-channel DMOS switches (RDS(ON) = 250mΩ each) enable single-inductor operation across 2.2V–40V input and 2.7V–40V output ranges.
It integrates an accurate RUN comparator (1.205V threshold, 140mV hysteresis), programmable PROG-based current sensing (±5% accuracy), and dual LDO rails (PLDO/LDO at 4.4V) for gate driver and bias supply. Burst Mode® operation achieves 30µA no-load IQ when bootstrapped.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.2V to 40V - supports 12V/24V/28V industrial and automotive battery inputs without pre-regulation. |
| Output Voltage Range | 2.7V to 40V - programmable via FB divider; enables single-supply solutions for LED drivers and wide-compliance chargers. |
| Max Output Current | 1A in buck mode - sufficient for high-power LED strings or 12V-to-5V/3.3V point-of-load conversion. |
| Switching Frequency | 1.2MHz ±200kHz - enables compact 6.8µH inductor and low-profile ceramic capacitors. |
| Efficiency | Up to 96% - measured at 12VIN/5VOUT, 600mA load; reduces thermal load in enclosed automotive modules. |
| Junction Temp Range | –40°C to 150°C - qualified per AEC-Q100 Grade H; suitable for under-hood and engine-control applications. |
| Quiescent Current | 30µA in Burst Mode (bootstrapped) - extends battery life in always-on vehicle subsystems. |
| PROG Current Gain | 40µA/A - enables precise average output current programming (e.g., 500mA → 20kΩ RPROG) with <±5% tolerance. |
Pinout & Package
Package: 16-lead plastic TSSOP (FE), 3mm × 4.4mm footprint, exposed PGND pad (Pin 17) requiring solder connection to PCB ground plane for thermal performance (θJA = 38°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1, 17) | Power Ground Reference | Primary return path for high-current switch nodes SW1/SW2; exposed pad must be soldered to maximize thermal dissipation. |
| SW2 (2) | Buck-Boost Inductor Node | Connects to one end of the single inductor; carries full switching current in both buck and boost modes. |
| PVOUT (3) | Power Output Terminal | High-current output node; requires ≥10µF low-ESR capacitor placed adjacent to IC with short PGND return path. |
| RUN (4) | Enable & UVLO Control Input | Accurate 1.205V turn-on threshold with 140mV hysteresis; enables custom input undervoltage lockout for battery monitoring. |
| PROG (5) | Average Output Current Sense | Delivers 40µA/A proportional current; used with RPROG to set precise constant-current limit for LED/battery applications. |
| VC (6) | Error Amplifier Output | Compensation node requiring external RC network (CP1, CP2, RZ) to stabilize voltage loop across full load and line range. |
| FB (7) | Voltage Feedback Input | 1.0V reference input; sets VOUT via resistor divider (VOUT = 1V × (1 + RTOP/RBOT)); sensitive to SW node coupling. |
| GND (8) | Signal Ground Reference | Low-noise analog ground for control circuitry; must be star-connected to PGND at single point near IC. |
| LDO (9) | Internal Bias Supply Input | Accepts regulated 4.4V from PLDO; requires ≥4.7µF bypass capacitor to suppress switching noise on control logic. |
| VIN (10) | LDO Input Supply | Connects to PVIN; powers internal VCC regulator; requires local 1µF bypass if trace length >5mm. |
| PLDO (11) | Internal LDO Output | 4.4V rail powering gate drivers and bias circuits; must be tied directly to LDO pin in layout. |
| BST2 (12) | SW2 Gate Driver Boost Cap | Connects via 68nF capacitor to SW2; generates floating rail for switch D gate drive during boost operation. |
| BST1 (13) | SW1 Gate Driver Boost Cap | Connects via 68nF capacitor to SW1; generates floating rail for switch A gate drive during buck operation. |
| PVIN (14) | Main Power Input | High-current input node; requires ≥10µF low-ESR capacitor with direct via to PGND plane. |
| SW1 (15) | Buck-Boost Inductor Node | Second inductor connection point; complements SW2 to form 4-switch buck-boost topology. |
| MODE (16) | Operation Mode Select | Logic-high = forced PWM (1.2MHz); logic-low = Burst Mode; auto-transitions to PWM at high load. |
Key Features
| Feature | Design Value |
|---|---|
| Single-inductor buck-boost topology | Eliminates need for separate buck and boost converters; reduces BOM count and board area in space-constrained automotive ECUs. |
| Programmable average output current | Enables precise constant-current LED driving or battery charging without external sense amplifiers or DACs. |
| AEC-Q100 Grade H qualification | Validated for –40°C to 150°C operation with extended reliability testing-meets automotive functional safety requirements. |
| 1.2MHz ultralow-noise PWM | Minimizes EMI in noise-sensitive infotainment and ADAS systems; avoids AM radio band interference. |
| Integrated 4.4V LDO with PLDO/LDO tie | Provides clean, regulated gate drive and bias supply-reduces need for external LDOs and improves startup robustness. |
| Accurate RUN pin UVLO with hysteresis | Allows system-level brown-out protection and controlled power sequencing in multi-rail automotive modules. |
Applications
| Automotive Infotainment Power | 12V Lead-Acid to 5V/3.3V Regulator |
|---|---|
|
Use Scenario: Powering display backlight, audio amplifier, and MCU in vehicle head units where input voltage varies from 6V (cranking) to 16V (load dump). IC Role / Device Role / Timing Role: Primary buck-boost regulator maintaining stable 5V/3.3V output regardless of battery voltage sag or surge. Use Value: Eliminates need for pre-boost stage during cranking; sustains operation down to 2.2V input while delivering 1A peak current. |
Use Scenario: Converting unregulated 12V lead-acid battery to tightly regulated 5V for USB ports and 3.3V for CAN transceivers in body control modules. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete buck + linear regulator combinations. Use Value: Achieves >92% efficiency at 500mA load-reducing heat generation in sealed junction boxes. |
| High-Power LED Driver | Solar Panel Battery Charging |
|
Use Scenario: Driving 3–5 series white LEDs (9–18V forward voltage) from 12V or 24V vehicle electrical system. IC Role / Device Role / Timing Role: Constant-current source with programmable IOUT via PROG pin and adjustable VOUT via FB divider. Use Value: Maintains consistent LED brightness across wide input range without external current-sense resistors or op-amps. |
Use Scenario: Charging 12V AGM or LiFePO4 batteries from variable-output solar panels (18–36V VOC) in RV or marine systems. IC Role / Device Role / Timing Role: MPPT-capable charger front-end regulating panel voltage to match battery charge profile. Use Value: Supports 2.2V–40V input and 2.7V–40V output-enabling direct integration with panel VMP without intermediate conversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3115EDHC-1#PBF | Same architecture but DFN package (3×5mm); lower θJA (43°C/W); rated for –40°C to 125°C only. | Lacks AEC-Q100 qualification; unsuitable for under-hood use but preferred for space-constrained consumer electronics. | Select when board area is critical and automotive temperature grade is not required. |
| MAX20404ATPA/VY+ | 36V, 2A buck-boost; 2.2MHz switching; integrated FETs; no PROG-based current programming. | Higher current capability but lacks programmable average output current feature-requires external current-loop control. | Select when higher output current is needed and constant-current regulation is handled externally. |
Compared with LTC3114HFE-1#PBF, the LTC3115EDHC-1#PBF offers better thermal performance in compact layouts but sacrifices automotive temperature rating, while the MAX20404ATPA/VY+ delivers higher current and frequency at the cost of losing the integrated, accurate current-programming function essential for LED/battery applications.
Availability
LTC3114HFE-1#PBF is available at Aetrix Electronics and suitable for automotive infotainment power, 12V/24V battery charging systems, and high-power LED driver designs requiring stable component supply with guaranteed long-term availability.
Supply support for LTC3114HFE-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.
The LTC3114-1 product line delivers robust, wide-input-range buck-boost regulators optimized for automotive and industrial applications demanding AEC-Q100 compliance, high efficiency, and programmable current control.
FAQ
What is the maximum operating junction temperature for LTC3114HFE-1#PBF?
The LTC3114HFE-1#PBF is rated for a maximum junction temperature of 150°C and is qualified per AEC-Q100 Grade H. This specification is guaranteed over the –40°C to 150°C operating junction temperature range, making it suitable for under-hood automotive environments where ambient temperatures exceed 105°C.
How does the PROG pin enable accurate average output current programming in LTC3114HFE-1#PBF?
The PROG pin of LTC3114HFE-1#PBF delivers a current proportional to switch D current (ISWD) at 40µA/A. Connecting a resistor RPROG from PROG to GND generates a voltage VPROG = ISWD × 40µA/A × RPROG. Setting RPROG so that VPROG = 1V at the desired IOUT yields ±5% accurate average current limiting-critical for LED drivers and battery chargers.
Can LTC3114HFE-1#PBF operate with input voltages below 2.7V?
Yes, LTC3114HFE-1#PBF supports input voltages as low as 2.2V, enabling operation during automotive cranking events. However, output voltage regulation below 2.7V requires disabling the accurate programmable current limit feature, as the minimum specified VOUT for full PROG functionality is 2.7V.
What is the purpose of the BST1 and BST2 pins on LTC3114HFE-1#PBF?
BST1 and BST2 on LTC3114HFE-1#PBF are bootstrap capacitor connections for the gate drivers of internal switches A and D, respectively. Each requires a 68nF capacitor tied between the BST pin and its corresponding switch node (SW1 or SW2) to generate floating high-side gate drive rails-essential for efficient N-channel MOSFET operation in buck and boost modes.
Does LTC3114HFE-1#PBF require external compensation components?
Yes, LTC3114HFE-1#PBF requires external frequency compensation components connected between the VC pin and GND. A typical network includes a zero-setting resistor (RZ) and two capacitors (CP1, CP2) to stabilize the voltage control loop across all operating conditions-details are provided in the Applications Information section of the datasheet.
LTC3114HFE-1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) 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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP-EP
LTC3114HFE-1#PBF FAQ
1.How can I place an order for LTC3114HFE-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3114HFE-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 LTC3114HFE-1#PBF reliable?
The price and inventory of LTC3114HFE-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 LTC3114HFE-1#PBF is usually 5 days.
3.What payment methods are accepted for LTC3114HFE-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3114HFE-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3114HFE-1#PBF?
LTC3114HFE-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3114HFE-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 LTC3114HFE-1#PBF?
For technical support, including LTC3114HFE-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3114HFE-1#PBF requirements.
6.How does Aetrix verify that LTC3114HFE-1#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3114HFE-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 LTC3114HFE-1#PBF meets industry standards.
7.What is the process for return or replacement of LTC3114HFE-1#PBF?
All LTC3114HFE-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3114HFE-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 LTC3114HFE-1#PBF part is unused and in its original packaging.
Return procedure for LTC3114HFE-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3114HFE-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…
