LTC3115-1IDE#PBF - 40V, 2A Buck-Boost DC/DC Converter | Analog Devices
MPN: LTC3115-1IDE#PBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.68 | $2,340.00 |
| 1,000 | $4.16 | $4,160.00 |
Drop-in alternatives for LTC3115-1IDE#PBF β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
LTC3115IDHD-1#PBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3115EDHD-1#PBF
β Drop-Inπ Reference alternative (not in catalog)
LTC3115-2
β Drop-Inπ Reference alternative (not in catalog)
LTC3115-1IDE#PBF Maximum Ratings & Electrical Characteristics
| Function | Buck-Boost |
| Output Voltage | 2.7V to 40V (Adjustable) |
| Output Current | 2A |
| Input Voltage Range | 2.7V to 40V |
| Switching Frequency | 300kHz to 2MHz (Programmable) |
| Synchronous Rectifier | Yes |
| Efficiency | Up to 95% |
| Quiescent Current | [DATA_NEEDED: Quiescent Current] |
| Shutdown Current | [DATA_NEEDED: Shutdown Current] |
| Operating Temperature Range | -40Β°C to 125Β°C |
| Package | 16-Lead DFN (4mm x 3mm) |
| Mounting Type | Surface Mount |
| Synchronization | Yes (via PWM/SYNC pin) |
| Soft Start | Yes |
| RoHS | Compliant |
LTC3115-1IDE#PBF Pin Configuration
| Pin 1 | SW1 β Switch node 1 |
| Pin 2 | PVIN β Power input |
| Pin 3 | VIN β Input voltage sense |
| Pin 4 | RUN β Enable input |
| Pin 5 | RT β Switching frequency set |
| Pin 6 | PWM/SYNC β PWM mode select / sync input |
| Pin 7 | ITH β Error amplifier output |
| Pin 8 | FB β Feedback input |
| Pin 9 | VOUT β Output voltage sense |
| Pin 10 | PVOUT β Power output |
| Pin 11 | SW2 β Switch node 2 |
| Pin 12 | PGND β Power ground |
| Pin 13 | PGND β Power ground |
| Pin 14 | PGND β Power ground |
| Pin 15 | PGND β Power ground |
| Pin 16 | PGND β Power ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
LTC3115-1IDE#PBF is suitable for 6 applications: Automotive Power Supplies, Industrial Power Supplies, Battery-Powered Equipment, Portable Medical Devices, IoT and Smart Home Devices, Telecom and Networking Equipment.
Automotive Power Supplies
The LTC3115-1IDE#PBF is ideal for automotive power supplies due to its wide 2.7V to 40V input range, which can handle load dumps and transients. It provides a regulated output for infotainment systems, ADAS, and sensors. Its high efficiency reduces heat dissipation in the vehicle's cabin, and its programmable switching frequency allows optimization for EMI compliance.
Recommended
Industrial Power Supplies
In industrial applications, the LTC3115-1IDE#PBF provides a stable output from fluctuating input sources such as 24V buses or battery backups. Its wide input range and 2A output current make it suitable for powering sensors, actuators, and microcontrollers. The device's synchronization feature allows it to be used in noise-sensitive environments by locking to an external clock.
Recommended
Battery-Powered Equipment
The LTC3115-1IDE#PBF is perfect for battery-powered devices like portable instruments and IoT nodes. It maintains a regulated output even as the battery voltage drops below the output, maximizing usable battery capacity. Its high efficiency (up to 95%) extends battery life, and the shutdown mode reduces quiescent current to near zero for long standby times.
Recommended
Portable Medical Devices
For portable medical devices, the LTC3115-1IDE#PBF provides a reliable power supply from batteries or USB sources. Its low noise operation and synchronization capability are beneficial for sensitive analog circuits. The wide input range ensures operation during battery discharge, and the small DFN package saves board space in compact designs.
Recommended
IoT and Smart Home Devices
The LTC3115-1IDE#PBF is well-suited for IoT devices that need to operate from a variety of power sources, including batteries, solar panels, or USB. Its wide input range and high efficiency make it ideal for energy harvesting applications. The programmable switching frequency allows designers to avoid interference with wireless communication bands.
Recommended
Telecom and Networking Equipment
In telecom and networking equipment, the LTC3115-1IDE#PBF provides a regulated output from a wide input range, such as 12V or 48V buses. Its 2A output current can power FPGAs, processors, and communication modules. The synchronization feature helps reduce EMI in systems with multiple converters.
Recommended
Recommended Products Summary
Engineering reference data for LTC3115-1IDE#PBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTC3115IDHD-1#PBF | LTC3115EDHD-1#PBF | LTC3115IFE-1#PBF | LTC3115EFE-1#PBF | LTC3115-2 | TPS63070RNMT |
|---|---|---|---|---|---|---|---|
| Package | 16-Lead DFN | 16-Lead DFN | 16-Lead DFN | 20-Lead TSSOP | 20-Lead TSSOP | 16-Lead DFN | VQFN-16 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Input Voltage Range | 2.7V to 40V | 2.7V to 40V | 2.7V to 40V | 2.7V to 40V | 2.7V to 40V | 2.7V to 40V | 2V to 16V |
| Output Current | 2A | 2A | 2A | 2A | 2A | 2A | 3A |
| Switching Frequency | 300kHz to 2MHz | 300kHz to 2MHz | 300kHz to 2MHz | 300kHz to 2MHz | 300kHz to 2MHz | 300kHz to 2MHz | 2.4MHz |
| Operating Temperature Range | -40Β°C to 125Β°C | -40Β°C to 125Β°C | 0Β°C to 70Β°C | -40Β°C to 125Β°C | 0Β°C to 70Β°C | -40Β°C to 125Β°C | -40Β°C to 125Β°C |
| Synchronization | Yes | Yes | Yes | Yes | Yes | Yes | No |
| Price (1pc) | $6.50 | $6.50 | $5.80 | $6.20 | $5.50 | $6.80 | $3.50 |
Key Differentiators
- Wide input voltage range (2.7V to 40V) (vs TPS63070RNMT)
- Synchronization capability (vs TPS63070RNMT)
- Industrial temperature grade (vs LTC3115EDHD-1#PBF)
Design Notes
For optimal performance, place the input and output capacitors as close as possible to the PVIN and PVOUT pins. Use a low-ESR ceramic capacitor of at least 10uF on the input and output. The exposed pad should be soldered to a large copper area for thermal dissipation.
Keep the switching node (SW1, SW2) traces short and wide to minimize parasitic inductance and EMI. Route the feedback trace away from the switching node to avoid noise coupling. Use a ground plane to provide a low-impedance return path.
The LTC3115-1IDE#PBF can dissipate significant power at high output currents. Ensure adequate thermal vias under the exposed pad to conduct heat to the PCB. For continuous operation at 2A, consider a copper area of at least 1 square inch on the top and bottom layers.
Compliance Information
RoHS compliant per 'PBF' suffix. AEC-Q100 qualification not specified in available data.
