LTC3100
PRODUCTION1.5MHz Synchronous Dual Channel DC/DC Converter and 100mA LDO
- Part Models
- 2
- 1ku List Price
- Starting From $4.71
Overview
- Extremely Compact Triple-Rail Solution
- Burst Mode® Operation, IQ = 15μA
- 1.5MHz Fixed Frequency Operation
- Power Good Indicators
- 700mA Synchronous Step-Up DC/DC
- 0.65V to 5V VIN Range
- 1.5V to 5.25V VOUT Range
- 94% Peak Efficiency
- VIN > VOUT Operation
- Output Disconnect
- 0.65V to 5V VIN Range
- 250mA Synchronous Step-Down DC/DC
- 1.8V to 5.5V VIN Range
- 0.6V to 5.5V VOUT Range
- 1.8V to 5.5V VIN Range
- LDO (VIN Internally Tied to VBST)
- 0.6V to 5.25V VOUT Range
- 200mV Dropout Voltage at 100mA
- 0.6V to 5.25V VOUT Range
- Available in a 16-Lead 3mm × 3mm QFN Package
The LTC3100 combines a high efficiency 700mA synchronous step-up converter, a 250mA synchronous stepdown converter and a 100mA LDO regulator. The LTC3100 features a wide input voltage range of 0.65V to 5V. The step-down converter can be powered by the output of the step-up converter or from a separate power source between 1.8V and 5.5V. The LDO can also be used as a sequencing switch on the output of the boost.
A switching frequency of 1.5MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The switching regulators use current mode control and are internally compensated, reducing external parts count. Each converter automatically transitions to Burst Mode operation to maintain high efficiency over the full load range. Burst Mode operation can be disabled for low noise applications. The integrated LDO provides a third low noise, low dropout supply.
Anti-ringing circuitry reduces EMI by damping the boost inductor in discontinuous mode. Additional features include shutdown current of under 1μA and overtemperature shutdown. The LTC3100 is housed in a 16-lead 3mm × 3mm 0.75mm QFN package.
Applications
- Bar Code Readers
- Medical Instruments
- Low Power Portable Electronic Devices
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3100EUD#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC3100EUD#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only) |
||
| LTC3100EUD#PBF | PRODUCTION | |
| LTC3100EUD#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Supervisory Circuits & Reset ICs 1 | ||
| LTC2935 | PRODUCTION | Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds |
| Switching Regulators & Controllers 1 | ||
| LTC3880 | RECOMMENDED FOR NEW DESIGNS | Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3100
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC3100EUD Demo Board | 1.5MHz Synchronous Dual-Channel DC/DC Converter and 100mA LDO
Resources
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