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Analog Devices LTC3311 | Demoboard DC3056A
3.3V to 1.2V at 12.5A, 2MHz Automotive Low EMI Buck Regulator in a 1.22cm2 Solution
Overview
| Topology | Buck Converter |
| Input voltage | 3-5.5 V |
| Switching frequency | 1800-2200 kHz |
| Output 1 | 1.22 V / 12.5 A |
Description
Demonstration circuit 3056A features the LTC®3311,12.5A, low voltage synchronous step-down Silent Switcher® operating as a 2MHz, 2.25V–5.5V input,1.2V 12.5A output buck regulator. The LTC3311 supports output voltages from 0.5V to VIN with operating frequencies from 500kHz up to 5MHz. The LTC3311 is a compact,ultralow emission, high efficiency, and high speed synchronous monolithic step-down switching regulator. The Silent Switcher technology optimizes fast-current loops and makes it easier to minimize EMI/EMC emissions. Fast minimum on-time of 35ns enables high VIN to low VOUT conversion at high frequency.
Features
- Pin Compatible with LTC3310/LTC3310S and LTC3311S
- Silent Switcher® Architecture
- Ultralow EMI Emissions
- High Efficiency—4.5mΩ NMOS and 16mΩ PMOS
- Wide Bandwidth, Fast Transient Response -Safely Tolerates Inductor Saturation in Overload
- VIN Range: 2.25V to 5.5V
- VOUT Range: 0.5V to VIN
- VOUT Accuracy: ±1% with Remote Sense
- Peak Current Mode Control
- Minimum On-Time: 35ns
- Programmable Frequency to 5MHz
- Precision 400mV Enable Threshold, 1μA in Shutdown
- Output Soft-Start with Voltage Tracking
- Power Good Output
- Die Temperature Monitor
- Configurable for Paralleling Power Stages in Forced Continuous Mode
- Thermally-Enhanced 3mm × 3mm LQFN Package
- AEC-Q100 Qualified for Automotive Applications
Typical applications
- Industrial, Distributed DC Power Systems (POL)
- Communications, Servers
- Automotive
- Telecom Power Supplies, FPGA, ASIC, µP Core Supplies
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Type | Pins (pcs) | Pitch (mm) | Rows | Gender | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74279226101 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MPSB EMI Multilayer Power Suppression Bead | 100 | 160 | 1100 MHz | 8000 | 150 | 2.3 | High Current | – | – | – | – | – | ||
 | 60800213421 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Jumper | – | – | – | 3000 | – | – | – | 2 | 2 | – | Jumper | Bag | |
 | 62000311121 | SPEC | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header | – | – | – | 2000 | – | – | Straight | 3 | 2 | Single | Pin Header | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74279226101 | SPEC | |
| 60800213421 | SPEC | – |
| 62000311121 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Type | Pins (pcs) | Pitch (mm) | Rows | Gender | Packaging | Samples |
|---|
