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Overview
| Topology | Buck Converter |
| Input voltage | 2.25-5.5 V |
| Switching frequency | 2000-6000 kHz |
| Output 1 | 3.65 V / 2 A |
Description
The LTC®3302 is a very small, high efficiency, low noise, monolithic synchronous 2A step-down DC/DC converter operating from a 2.25V to 5.5V input supply. Using constant frequency, peak current mode control,this regulator achieves fast transient response with small external components.The LTC3302 operates in forced continuous or pulseskipping mode for low noise, or in low-ripple Burst Mode operation for high efficiency at light loads, ideal for battery-powered systems. The IC regulates output voltages as low as 500mV. The adjustable version operates from 500mV to VIN with two additional external resistors. Other features include output overvoltage protection, short-circuit protection, thermal shutdown, clock synchronization,and up to 100% duty cycle operation for low dropout.The LTC3302 is available in a low profile 2mm × 2mmFCQFN package with exposed pad and side wettable flanks.
Features
- High Efficiency: 30mΩ NMOS, 85mΩ PMOS
- Peak Current Mode Control
- 27ns Minimum On-Time
- Wide Bandwidth, Fast Transient Response
- Low-Ripple Burst Mode® Operation with IQ of 80μA
- Up to 6MHz Operation
- Safely Tolerates Inductor Saturation in Overload
- VIN Range: 2.25V to 5.5V
- Fixed VOUT Range: 0.5V to 3.65V, FactoryProgrammed in 50mV Steps
- VOUT Accuracy: ±1% Overtemperature Range
- Precision 400mV Enable Threshold
- Shutdown Current: 1μA
- Power Good, Internal Compensation and Soft-Start
- Thermally Enhanced, 12-Pin, 2mm × 2mm, Flip Chip(FCQFN) Package with Side Wettable Flanks
- AEC-Q100 Qualified for Automotive Applications
Typical applications
- Optical Networking, Servers, Telecom, Communications
- Automotive,
- Distributed DC Power Systems (POL), FPGA, ASIC, μP Core Supplies
- Industrial
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT1(A) | ISAT2(A) | RDC max.(mΩ) | fres(MHz) | ISAT(A) | RDC(mΩ) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-LQS SMT Power Inductor, 0.16 µH, 3.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQS SMT Power Inductor | Inductance0.16 µH | Rated Current3.7 A | – | – | – | Self Resonant Frequency644 MHz | Saturation Current7 A | DC Resistance16 mΩ | ||||
 | WE-PMCI Power Molded Chip Inductor, 0.24 µH, 6.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMCI Power Molded Chip Inductor | Inductance0.24 µH | Rated Current6.9 A | Saturation Current 12.8 A | Saturation Current 26.7 A | DC Resistance21 mΩ | Self Resonant Frequency280 MHz | Saturation Current5.4 A | – | ||||
| WE-PMCI Power Molded Chip Inductor, 0.47 µH, 5.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMCI Power Molded Chip Inductor | Inductance0.47 µH | Rated Current5.4 A | Saturation Current 12.95 A | Saturation Current 26.3 A | DC Resistance30 mΩ | Self Resonant Frequency165 MHz | Saturation Current4.2 A | – | ||||
 | WE-PMCI Power Molded Chip Inductor, 0.47 µH, 7.35 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMCI Power Molded Chip Inductor | Inductance0.47 µH | Rated Current7.35 A | Saturation Current 13.6 A | Saturation Current 27.4 A | DC Resistance29 mΩ | Self Resonant Frequency150 MHz | Saturation Current5 A | – |