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Overview
| Topology | Buck Converter |
| Input voltage | 3.3 V |
| Switching frequency | 3000 kHz |
| Output 1 | 0.8 V / 2 A |
| Output 2 | 1.2 V / 2 A |
Description
The LTC®3315A features dual 2A monolithic synchronousstep-down converters operating from a 2.25V to5.5V input supply in one package for space-constrainedapplications with demanding performance requirements.Using constant frequency, peak current mode control atswitching frequencies up to 3MHz with a minimum ontimeas low as 25ns, both bucks achieve high efficiencyand fast transient response in a very small applicationfootprint.
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 3MHz
- VIN Range: 2.25V to 5.5V
- VOUT Range: 0.5V to VIN
- VOUT Accuracy: ±1%
- Low Ripple Burst Mode® 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
Typical applications
- Distributed DC Power Systems (POL)
- Industrial/Automotive/Communications
- FPGA, ASIC, μP Core Supplies
- Servers, Telecom Supplies, Optical Networking
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 | IRP,40K (A) | ISAT,30% (A) | RDC typ. (mΩ) | VOP (V) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744383360033 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MAPI SMT Power Inductor | 0.33 | 5.5 | – | – | 17 | 140 | SMT | 8.7 | 10.5 | 14 | 80 | SMT | ||
| 744383360047 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MAPI SMT Power Inductor | 0.47 | 4.8 | – | – | 22 | 99 | SMT | 7.55 | 9.8 | 18 | 80 | SMT | ||
 | 74479299147 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PMCI Power Molded Chip Inductor | 0.47 | 11.05 | 5.15 | 9.95 | 22 | 90 | High Saturation Current | 11.05 | – | 18 | – | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744383360033 | SPEC | |
| 744383360047 | SPEC | |
| 74479299147 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT1 (A) | ISAT2 (A) | RDC max. (mΩ) | fres (MHz) | Version | IRP,40K (A) | ISAT,30% (A) | RDC typ. (mΩ) | VOP (V) | Mount | Samples |
|---|