Datasheet Texas Instruments LM2745 — 数据表
| 制造商 | Texas Instruments |
| 系列 | LM2745 |
具有预偏置启动和可选时钟同步功能的1-14V，电压模式同步降压控制器
数据表
LM2745/48 Synch Buck Controller w/ Pre-Bias Startup & Optional Clk Synch datasheet
PDF, 1.3 Mb, 修订版: E, 档案已发布: Apr 3, 2013
从文件中提取
价格
状态
| LM2745MTC/NOPB | LM2745MTCX/NOPB | |
|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes | No |
打包
| LM2745MTC/NOPB | LM2745MTCX/NOPB | |
|---|---|---|
| N | 1 | 2 |
| Pin | 14 | 14 |
| Package Type | PW | PW |
| Industry STD Term | TSSOP | TSSOP |
| JEDEC Code | R-PDSO-G | R-PDSO-G |
| Package QTY | 94 | 2500 |
| Carrier | TUBE | LARGE T&R |
| Device Marking | MTC | 2745 |
| Width (mm) | 4.4 | 4.4 |
| Length (mm) | 5 | 5 |
| Thickness (mm) | 1 | 1 |
| Pitch (mm) | .65 | .65 |
| Max Height (mm) | 1.2 | 1.2 |
| Mechanical Data | 下载 | 下载 |
参数化
| Parameters / Models | LM2745MTC/NOPB | LM2745MTCX/NOPB |
|---|---|---|
| Control Mode | Voltage Mode | Voltage Mode |
| Duty Cycle(Max), % | 86 | 86 |
| Iout(Max), A | 20 | 20 |
| Iq(Typ), mA | 1.7 | 1.7 |
| Number of Phases | 1 | 1 |
| Operating Temperature Range, C | -40 to 125 | -40 to 125 |
| Package Group | TSSOP | TSSOP |
| Rating | Catalog | Catalog |
| Regulated Outputs | 1 | 1 |
| Special Features | Enable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification,Tracking | Enable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification,Tracking |
| Switching Frequency(Max), kHz | 1000 | 1000 |
| Switching Frequency(Min), kHz | 250 | 250 |
| Type | Controller | Controller |
| Vin(Max), V | 14 | 14 |
| Vin(Min), V | 1 | 1 |
| Vout(Max), V | 12 | 12 |
| Vout(Min), V | 0.6 | 0.6 |
生态计划
| LM2745MTC/NOPB | LM2745MTCX/NOPB | |
|---|---|---|
| RoHS | Compliant | Compliant |
应用须知
- Analyzing Power ModulesPDF, 503 Kb, 档案已发布: Mar 22, 2007
- AN-1603 LM274X Reference Designs (Rev. C)PDF, 222 Kb, 修订版: C, 档案已发布: May 1, 2013
This application note presents several reference designs that implement the LM274X synchronous buckcontroller. The designs address various applications in a wide variety of configurations. The designreference will give an engineer a head start on their project, with designs encompassing sequencing,tracking, synchronizing multiple power supplies, DDR termination, buck-boost, low PCB real esta - Current Limit Foldback Improves Short Circuit Protection in LM274X Family (Rev. B)PDF, 89 Kb, 修订版: B, 档案已发布: Apr 23, 2013
This application report discusses the function of the low side current limit used in the LM274X, andpresents a simple method to enhance the short-circuit protection. the current limit is required to protect thepower components from thermal stress, which can reduce life span. Typically, high side current limitdesigns require an internal rising edge blanking time or external filter to avoid no - Optmiz Pwr Cntrlr Dsigns thru Utiliz Freq & Sync, Ext Ref, Trking & Precis ENPDF, 359 Kb, 档案已发布: Apr 24, 2008
- Reduce buck-converter EMI and voltage stress by minimizing inductive parasiticsPDF, 926 Kb, 档案已发布: Jul 21, 2016
模型线
系列: LM2745 (2)
制造商分类
- Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Down (Buck)> Buck Controller (External Switch)