Datasheet Linear Technology LT8643S — 数据表
| 制造商 | Linear Technology |
| 系列 | LT8643S |
具有2.5µA静态电流的42V，6A同步降压静音开关2
数据表
Datasheet LT8640S, LT8643S
PDF, 2.3 Mb, 语言: en, 文件上传: Sep 20, 2017, 页数: 30
42V, 6A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current
42V, 6A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current
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| LT8643SEV#PBF | LT8643SIV#PBF | |
|---|---|---|
| N | 1 | 2 |
| Package | 4mm × 4mm × 0.94mm LQFN 包装外形图 | 4mm × 4mm × 0.94mm LQFN 包装外形图 |
| Package Code | LQFN | LQFN |
| Package Index | 05-08-1511 | 05-08-1511 |
| Pin Count | 24 | 24 |
参数化
| Parameters / Models | LT8643SEV#PBF | LT8643SIV#PBF |
|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Demo Boards | DC2658A | DC2658A |
| Design Tools | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File |
| Export Control | no | no |
| Features | Low EMI, Silent Switcher 2 Architecture, Internal Bypass Caps, Resistor Set Frequency, External Synchronization, Burst Mode, Tracking, Power Good | Low EMI, Silent Switcher 2 Architecture, Internal Bypass Caps, Resistor Set Frequency, External Synchronization, Burst Mode, Tracking, Power Good |
| Frequency, kHz | 3000 | 3000 |
| Frequency Adjust Range | 200kHz - 3MHz | 200kHz - 3MHz |
| Frequency Sync Range | 200kHz - 3MHz | 200kHz - 3MHz |
| Integrated Inductor | no | no |
| Ishutdown, µA | 1.7 | 1.7 |
| Isupply, mA | 0.021 | 0.021 |
| Max Phases | 1 | 1 |
| Monolithic | yes | yes |
| Number of Outputs | 1 | 1 |
| Operating Temperature Range, °C | 0 to 85 | -40 to 85 |
| Output Current, A | 6 | 6 |
| Polyphase | no | no |
| Switch Current, A | 10 | 10 |
| Synchronous | yes | yes |
| Topology | Buck | Buck |
| Topology 1 | Buck | Buck |
| Vin Max, V | 42 | 42 |
| Vin Min, V | 3.4 | 3.4 |
| Vin Min Startup, V | 3.4 | 3.4 |
| Vout Max, V | 41.58 | 41.58 |
| Vout Maximum | 0.99Vin | 0.99Vin |
| Vout Min, V | 0.97 | 0.97 |
| Vref Accuracy Over Temp, % | 1.23 | 1.23 |
生态计划
| LT8643SEV#PBF | LT8643SIV#PBF | |
|---|---|---|
| RoHS | Compliant | Compliant |
其他选择
模型线
系列: LT8643S (2)
制造商分类
- Power Management > Switching Regulator > Ultralow Noise Regulators
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck | High Input Voltage Buck