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Analog Devices LTC3314A | Demoboard DC3204A
3.3V to 1.2V and 1.8V at 4A, 2MHz Dual Step-Down DC/DC Regulators
Overview
| Topology | Buck Converter |
| Input voltage | 2.25-5.5 V |
| Switching frequency | 1800-2200 kHz |
| Output 1 | 1.84 V / 2 A |
| Output 2 | 1.23 V / 2 A |
Description
Demo circuit 3204A features the LTC3314A, 5V, dual 4A/ dual-phase 8A step-down DC/DC regulator IC. This demo circuit is configured as a 2MHz, 3.3V input buck regulator with dual 4A output at 1.2V and 1.8V.The LTC®3314A features dual monolithic synchronous4A step-down power stages in a 30-ball, 2.2mm × 2.7mm WLCSP package for space saving applications with demanding performance requirements. Both bucks achieve high efficiency and fast transient response with small external components. The LTC3314A can also be configured as a single output, dual-phase 8A step-down converter. Please refer to DC3205A as a single output dual-phase application example. The LTC3314A data sheet gives a complete description of its operation and application information. The data sheet must be read in All registered trademarks and trademarks are the property of their respective owners. PERFORMANCE SUMMARY conjunction with this demo manual when evaluating or modifying this demo circuit.
Features
- Dual 4A Outputs
- Configurable as Single Output, 2-Phase 8A Buck
- High Efficiency: 12mΩ High-Side and 8mΩ Low-Side
- ±1% Maximum Total DC Output Error
- Wide Bandwidth, Fast Transient Response
- VIN Range: 2.25V to 5.5V
- VOUT Range: 0.5V to VIN
- Programmable Frequency to 3MHz
- Low Ripple Burst Mode® Operation with Low IQ
- Shutdown Current: 1.4µA
- 35ns Minimum On-Time
- Internal Compensation
- Precision Enable, Power Good for Power Sequencing
- Tiny 30-Lead, 2.2mm × 2.7mm WLCSP Package
Typical applications
- Servers, Telecom Power Supplies, μP Core Supplies, Distributed DC Power Systems (POL), FPGA, ASIC
- Optical Networking
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | L (mm) | f (mm) | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Type | Pins | Rows | Gender | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74279226101 | SPEC | 8 files | WE-MPSB EMI Multilayer Power Suppression Bead | 4.5 | – | 100 | 160 | 1100 MHz | 8000 | 150 | 2.3 | High Current | – | – | – | – | ||
 | 62000311121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Pin Header | 6 | – | – | – | – | 2000 | – | – | Straight | 3 | Single | Pin Header | Bag | |
| 62000411121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Pin Header | 8 | – | – | – | – | 2000 | – | – | Straight | 4 | Single | Pin Header | Bag | |
 | 702935000 | SPEC | – | 3 files | WA-SNSR Self-Retaining Spacer | 12.7 | 4.8 | – | – | – | – | – | – | – | – | – | – | – | |
 | 60800213421 | SPEC | – | 3 files | WR-PHD 2.00 mm Jumper with Test Point | – | – | – | – | – | 3000 | – | – | – | 2 | – | Jumper | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74279226101 | SPEC | |
| 62000311121 | SPEC | – |
| 62000411121 | SPEC | – |
| 702935000 | SPEC | – |
| 60800213421 | SPEC | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Product series | L (mm) | f (mm) | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Type | Pins | Rows | Gender | Packaging | Samples |
|---|