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Overview
| Topology | Buck Converter |
| Input voltage | 5 V |
| Switching frequency | 10000 kHz |
| Output 1 | 2.5 V / 2 A |
| Output 2 | 3.3 V / 2 A |
Description
The LTC®3315B features dual 2A monolithic synchronous step-down converters operating from a 2.25V to 5.5V input supply in one package for space-constrained applications with demanding performance requirements. Using constant frequency, peak current mode control at switching frequencies up to 10MHz with a minimum ontime as low as 25ns, both bucks achieve high efficiency and fast transient response in a very small application footprint.
Features
- Dual Outputs Each with 2A Output Current
- High Efficiency: 19mΩ NMOS and 75mΩ PMOS
- Wide Bandwidth, Fast Transient Response
- Switching Frequency Synchronizable Up to 10MHz
- VIN Range: 2.25V to 5.5V
- VOUT Range: 0.5V to VIN
- VOUT Accuracy: }1%
- Low Ripple Burst ModeR Operation
- Peak Current Mode Control
- Minimum On-Time: 25ns
- Safely Tolerates Inductor Saturation in Overload
- Shutdown Current: 1.2μA
- Precision 400mV Enable Thresholds
- Internal Soft-Start and Compensation
- Power Good Output
- Low Profile, Thermally Enhanced 12-Lead 2mm × 2mm × 0.74mm LQFN Package
- AEC-Q100 Qualified for Automotive Applications
Typical applications
- Industrial
- Servers, Optical Networking, Communications
- Telecom Supplies, Distributed DC Power Systems (POL), FPGA, ASIC, μP Core Supplies
- Automotive
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT1 (A) | ISAT2 (A) | RDC max. (mΩ) | fres (MHz) | Version | ISAT (A) | RDC (mΩ) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744040240047 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LQS SMT Power Inductor | 0.47 | 2.6 | – | – | – | 231 | – | 5 | 32 | ||
 | 74479276147 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PMCI Power Molded Chip Inductor | 0.47 | 6.8 | 2.95 | 6.3 | 30 | 165 | Standard | 4.2 | – | ||
| 74479276147C | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PMCI Power Molded Chip Inductor | 0.47 | 6.8 | 2.95 | 6.3 | 30 | 165 | Low RDC | 4.5 | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744040240047 | SPEC | |
| 74479276147 | SPEC | |
| 74479276147C | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT1 (A) | ISAT2 (A) | RDC max. (mΩ) | fres (MHz) | Version | ISAT (A) | RDC (mΩ) | Samples |
|---|