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Overview
| Topology | Buck Converter |
| Input voltage | 2.2-5.5 V |
| Output 1 | 3.3 V / 4 A |
Description
The LTC®3308A is a very small, high efficiency, low noise, monolithic synchronous 4A step-down DC/DC converter operating from a 2.25V to 5.5V input supply. Using constant frequency, peak current mode control at switching frequencies up to 3MHz and minimum on-time as low as 22ns, this regulator achieves fast transient response with small external components. Silent Switcher architecture minimizes EMI emissions.
Features
- High Efficiency: 8mΩ NMOS, 31mΩ PMOS
- Programmable Frequency to 3MHz
- Tiny Inductor and Capacitors
- Peak Current Mode Control
- 22ns Minimum On-Time
- Wide Bandwidth, Fast Transient Response
- Silent Switcher™ Architecture
- Ultralow EMI Emissions
- Low Ripple Burst Mode® Operation with IQ of 40μA
- Safely Tolerates Inductor Saturation in Overload
- VIN Range: 2.25V to 5.5V
- VOUT Range: 0.5V to VIN
- VOUT Accuracy: ±1% Over Temperature Range
- Precision 400mV Enable Threshold
- Shutdown Current: 1μA
- Power Good, Internal Compensation and Soft Start
- Thermally Enhanced 2mm × 2mm LQFN Package
- AEC-Q100 Qualified for Automotive Applications
Typical applications
- Automotive
- Industrial
- Optical Networking, Servers, Telecom, Communications
- Distributed DC Power Systems (POL), FPGA, ASIC, μP Core Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | RDC(mΩ) | fres(MHz) | 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 | Saturation Current7 A | DC Resistance16 mΩ | Self Resonant Frequency644 MHz |