Datasheet Linear Technology LTC3874-1 — 数据表
| 制造商 | Linear Technology |
| 系列 | LTC3874-1 |
具有亚兆欧DCR感应功能的多相降压同步从控制器
数据表
Datasheet LTC3874-1
PDF, 1.0 Mb, 语言: en, 文件上传: Oct 3, 2017, 页数: 22
PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing
PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing
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价格
打包
| LTC3874EUF-1#PBF | LTC3874EUF-1#TRPBF | LTC3874IUF-1#PBF | LTC3874IUF-1#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | 4x4 QFN-24 包装外形图 | 4x4 QFN-24 包装外形图 | 4x4 QFN-24 包装外形图 | 4x4 QFN-24 包装外形图 |
| Package Code | UF | UF | UF | UF |
| Package Index | 05-08-1697 | 05-08-1697 | 05-08-1697 | 05-08-1697 |
| Pin Count | 24 | 24 | 24 | 24 |
参数化
| Parameters / Models | LTC3874EUF-1#PBF | LTC3874EUF-1#TRPBF | LTC3874IUF-1#PBF | LTC3874IUF-1#TRPBF |
|---|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Design Tools | LTspice Model | LTspice Model | LTspice Model | LTspice Model |
| Export Control | no | no | no | no |
| Features | Sub-Milliohm DCR Current Sense, External Synchronization, PolyPhase | Sub-Milliohm DCR Current Sense, External Synchronization, PolyPhase | Sub-Milliohm DCR Current Sense, External Synchronization, PolyPhase | Sub-Milliohm DCR Current Sense, External Synchronization, PolyPhase |
| Frequency, kHz | 1000 | 1000 | 1000 | 1000 |
| Frequency Adjust Range | 250kHz - 1MHz | 250kHz - 1MHz | 250kHz - 1MHz | 250kHz - 1MHz |
| Frequency Sync Range | 250kHz - 1MHz | 250kHz - 1MHz | 250kHz - 1MHz | 250kHz - 1MHz |
| Integrated Inductor | no | no | no | no |
| Ishutdown, µA | 1800 | 1800 | 1800 | 1800 |
| Isupply, mA | 4.6 | 4.6 | 4.6 | 4.6 |
| Max Phases | 2, 3, 4, 6, 12 | 2, 3, 4, 6, 12 | 2, 3, 4, 6, 12 | 2, 3, 4, 6, 12 |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Operating Temperature Range, °C | 0 to 85 | 0 to 85 | -40 to 85 | -40 to 85 |
| Output Current, A | 25 | 25 | 25 | 25 |
| Polyphase | yes | yes | yes | yes |
| Sense Resistor | DCR, Sub-Milliohm DCR | DCR, Sub-Milliohm DCR | DCR, Sub-Milliohm DCR | DCR, Sub-Milliohm DCR |
| Switch Current, A | 25 | 25 | 25 | 25 |
| Synchronous | yes | yes | yes | yes |
| Topology | Buck | Buck | Buck | Buck |
| Topology 1 | Buck | Buck | Buck | Buck |
| Vin Max, V | 38 | 38 | 38 | 38 |
| Vin Min, V | 4.5 | 4.5 | 4.5 | 4.5 |
| Vout Max, V | 5.5 | 5.5 | 5.5 | 5.5 |
| Vout Maximum | 5.5V | 5.5V | 5.5V | 5.5V |
| Vout Min, V | 0.6 | 0.6 | 0.6 | 0.6 |
生态计划
| LTC3874EUF-1#PBF | LTC3874EUF-1#TRPBF | LTC3874IUF-1#PBF | LTC3874IUF-1#TRPBF | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
模型线
系列: LTC3874-1 (4)
制造商分类
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck | External Power Switch Buck Controllers