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Analog Devices LTC3114-1
40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current
Overview
| Topology | Buck-Boost Converter |
| Input voltage | 2.2-40 V |
| Switching frequency | 1200 kHz |
| Output 1 | 40 V / 1 A |
| IC revision | A |
Description
The LTC®3114-1 is a versatile, wide operating voltage rangesynchronous monolithic buck-boost DC/DC converter withprogrammable average output current. The LTC3114-1’sproprietary buck-boost PWM control circuitry delivers lownoise operation across the entire operating voltage range.Current mode control ensures exceptional line and loadtransient responses.Synchronous, internal MOSFET switches and pin selectableBurst Mode operation maintain high efficiency acrossthe entire range of load current. Average output currentis programmed with a standard resistor and provides thebasis for wide input range, high efficiency charging systemsor constant current, high efficiency LED drive. Regulatorturn-on is programmable through the accurate RUN pin.Quiescent current is just 3μA in shutdown. Overtemperatureprotection, short-circuit protection and soft-start areintegrated. The LTC3114-1 is offered in 16-lead 3mm ×5mm × 0.75mm DFN and 16 lead TSSOP (FE) packages.
Features
- Regulates VOUT Above, Below or Equal to VIN
- Single Inductor
- Wide VIN Range: 2.2V to 40V
- Wide VOUT Range: 2.7V to 40V
- 1A Output Current in Buck Mode
- 0.5A Output Current, VIN = 3.6V, VOUT = 5V
- Programmable Average Output Current
- Up to 96% Efficiency
- Burst Mode® Operation, 30μA No-Load IQ
- Current Mode Control
- 1.2MHz Ultralow Noise PWM
- Accurate RUN Pin Threshold
- Thermally Enhanced, 16-lead 3mm × 5mm DFNand TSSOP Packages
Typical applications
- 12V/24V Solar Panel Battery Charging Systems
- 24V/28V Industrial Power Supply
- 12V Lead-Acid to 12V Regulator
- High Power LED Driver
- Automotive Power Systems
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Mount | IRP,40K(A) | RDC max.(mΩ) | Size | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD SMT Power Inductor, 4.7 µH, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance4.7 µH | – | – | Self Resonant Frequency45 MHz | MountSMT | Performance Rated Current4.2 A | DC Resistance35 mΩ | Size7332 | VersionRobust | ||||
 | WE-TPC SMT Tiny Power Inductor, 6.8 µH, 4.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Inductance6.8 µH | Rated Current4.2 A | Saturation Current3.6 A | Self Resonant Frequency30 MHz | MountSMT | – | DC Resistance33 mΩ | Size1028 | VersionSMT | ||||
 | WE-TPC SMT Tiny Power Inductor, 15 µH, 3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Inductance15 µH | Rated Current3 A | Saturation Current3.25 A | Self Resonant Frequency16 MHz | MountSMT | – | DC Resistance50 mΩ | Size1038 | VersionSMT | ||||
| WE-PD SMT Power Inductor, 33 µH, 2.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance33 µH | Rated Current2.8 A | Saturation Current3 A | Self Resonant Frequency11 MHz | MountSMT | Performance Rated Current4.6 A | DC Resistance57 mΩ | Size1260 | VersionStandard |