Datasheet Linear Technology LTC3852 — 数据表
| 制造商 | Linear Technology |
| 系列 | LTC3852 |
低输入电压，同步降压DC / DC控制器
数据表
Datasheet LTC3852
PDF, 429 Kb, 语言: en, 文件上传: Sep 23, 2017, 页数: 32
Low Input Voltage, Synchronous Step-Down DC/DC Controller
Low Input Voltage, Synchronous Step-Down DC/DC Controller
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| LTC3852EUDD#PBF | LTC3852EUDD#TRPBF | LTC3852IUDD#PBF | LTC3852IUDD#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | 3x5 QFN-24 包装外形图 | 3x5 QFN-24 包装外形图 | 3x5 QFN-24 包装外形图 | 3x5 QFN-24 包装外形图 |
| Package Code | UDD | UDD | UDD | UDD |
| Package Index | 05-08-1833 | 05-08-1833 | 05-08-1833 | 05-08-1833 |
| Pin Count | 24 | 24 | 24 | 24 |
参数化
| Parameters / Models | LTC3852EUDD#PBF | LTC3852EUDD#TRPBF | LTC3852IUDD#PBF | LTC3852IUDD#TRPBF |
|---|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Demo Boards | DC1270A | DC1270A | DC1270A | DC1270A |
| Design Tools | LTspice File | LTspice File | LTspice File | LTspice File |
| Export Control | no | no | no | no |
| Features | DCR Current Sense, External Synchronization, Resistor Set Frequency, Power Good, Burst Mode | DCR Current Sense, External Synchronization, Resistor Set Frequency, Power Good, Burst Mode | DCR Current Sense, External Synchronization, Resistor Set Frequency, Power Good, Burst Mode | DCR Current Sense, External Synchronization, Resistor Set Frequency, Power Good, Burst Mode |
| Frequency, kHz | 750 | 750 | 750 | 750 |
| Frequency Adjust Range | 250kHz - 750kHz | 250kHz - 750kHz | 250kHz - 750kHz | 250kHz - 750kHz |
| Frequency Sync Range | 250kHz - 750kHz | 250kHz - 750kHz | 250kHz - 750kHz | 250kHz - 750kHz |
| Integrated Inductor | no | no | no | no |
| Ishutdown, µA | 5 | 5 | 5 | 5 |
| Isupply, mA | 7 | 7 | 7 | 7 |
| Max Phases | 1 | 1 | 1 | 1 |
| Monolithic | no | no | no | no |
| 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 | no | no | no | no |
| Sense Resistor | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR |
| Switch Current, A | 25 | 25 | 25 | 25 |
| Synchronous | yes | yes | yes | yes |
| Topology | Buck | Buck | Buck | Buck |
| Vin Max, V | 38 | 38 | 38 | 38 |
| Vin Min, V | 2.7 | 2.7 | 2.7 | 2.7 |
| Vout Max, V | 5 | 5 | 5 | 5 |
| Vout Maximum | 5V | 5V | 5V | 5V |
| Vout Min, V | 0.8 | 0.8 | 0.8 | 0.8 |
| Vref Accuracy Over Temp, % | 1.25 | 1.25 | 1.25 | 1.25 |
生态计划
| LTC3852EUDD#PBF | LTC3852EUDD#TRPBF | LTC3852IUDD#PBF | LTC3852IUDD#TRPBF | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
模型线
系列: LTC3852 (4)
制造商分类
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers