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Analog Devices LTC7151S | Demoboard DC2615A
LTC7151S High Efficiency 15A Silent Switcher Buck Regulator
Overview
| Topology | Buck Converter |
| Input voltage | 3.1-20 V |
| Output 1 | 1.2 V / 15 A |
Description
Demonstration circuit 2615A features the LTC7151S in a high efficiency 1.2V/15A step-down regulator with an input voltage range of 3.1V to 20V and a 1MHz switching frequency. The Silent Switcher®2 technology reduces the switching noise while the internal MOSFETs of the LTC7151S provide high efficiency over a wide input voltage range. No current sense resistor is required.The LTC7151S employs a controlled on-time, valley current mode architecture. This architecture allows for a short minimum on-time which is ideal for high stepdown ratios. In addition, the architecture provides a fast load step response by allowing the switch node pulses to compress after the load steps up – see Figure 6.The LTC7151S data sheet provides a complete description of the IC operation and application information. The data sheet must be read in conjunction with the quick start guide.
Features
- Silent Switcher®2 Architecture for Low EMI
- VIN Range: 3.1V to 20V
- VOUT Range: 0.5V to 5.5V
- Differential VOUT Remote Sense
- Adjustable Frequency: 400kHz to 3MHz
- Poly Phase® Operation: Up to 12 Phases
- Output Tracking and Soft-Start
- Reference Accuracy: ±1% Over temperature
- Current Mode Operation for Excellent Line and Load Transient Response
- Accurate 1.2V Run Pin Threshold
- Supports Forced Continuous/Discontinuous Modes
- 28-Lead Thermally Enhanced 4mm × 5mm × 0.74mm LQFN Package
Typical applications
- Automotive and Industrial Power Supplies, Server Power Applications, Point-of-Load Supply for ASIC, FPGA, DSP, µP, etc.
- Distributed Power Systems
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | f (mm) | L (µH) | LR (nH) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | Pins | Type | Mount | L (mm) | H (mm) | IR (A) | Working Voltage (V (AC)) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744308020 | – | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCM SMT High Current Flat Wire Inductor | – | 0.2 | 198 | 47 | 64 | 0.37 | 45 | MnZn | 2 | – | SMT | 10.1 | 6.8 | 25 | – | ||
 | 62000421121 | SPEC | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header | – | – | – | – | – | – | – | – | 4 | Straight | THT | 4 | – | 2 | 200 | |
 | 702935000 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SNSR Self-Retaining Spacer | 4.8 | – | – | – | – | – | – | PA66 | – | – | – | 12.7 | – | – | – | |
 | 60800213421 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Jumper | – | – | – | – | – | – | – | – | 2 | – | – | – | – | 3 | 200 | |
 | 62000311121 | SPEC | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header | – | – | – | – | – | – | – | – | 3 | Straight | THT | 6 | – | 2 | 200 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744308020 | – | |
| 62000421121 | SPEC | – |
| 702935000 | SPEC | – |
| 60800213421 | SPEC | – |
| 62000311121 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | f (mm) | L (µH) | LR (nH) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | Pins | Type | Mount | L (mm) | H (mm) | IR (A) | Working Voltage (V (AC)) | Samples |
|---|
