Datasheet Texas Instruments LM2745
| Manufacturer | Texas Instruments |
| Series | LM2745 |
1-14V, Voltage Mode Synchronous Buck Controller with Pre-Bias Startup and Optional Clock Sync
Datasheets
LM2745/48 Synch Buck Controller w/ Pre-Bias Startup & Optional Clk Synch datasheet
PDF, 1.3 Mb, Revision: E, File published: Apr 3, 2013
Extract from the document
Prices
Status
| LM2745MTC/NOPB | LM2745MTCX/NOPB | |
|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes | No |
Packaging
| 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 | Download | Download |
Parametrics
| 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 |
Eco Plan
| LM2745MTC/NOPB | LM2745MTCX/NOPB | |
|---|---|---|
| RoHS | Compliant | Compliant |
Application Notes
- Analyzing Power ModulesPDF, 503 Kb, File published: Mar 22, 2007
- AN-1603 LM274X Reference Designs (Rev. C)PDF, 222 Kb, Revision: C, File published: 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, Revision: B, File published: 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, File published: Apr 24, 2008
- Reduce buck-converter EMI and voltage stress by minimizing inductive parasiticsPDF, 926 Kb, File published: Jul 21, 2016
Model Line
Series: LM2745 (2)
Manufacturer's Classification
- Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Down (Buck)> Buck Controller (External Switch)
