Datasheet Texas Instruments LM1771SMM/NOPB
| Manufacturer | Texas Instruments |
| Series | LM1771 |
| Part Number | LM1771SMM/NOPB |
Low-Voltage Synchronous Buck Controller with Precision Enable and No External Compensation 8-VSSOP
Datasheets
LM1771 Low-Voltage Synchronous Buck Controller With Precision Enable and No External Compensation datasheet
PDF, 1.3 Mb, Revision: D, File published: Jan 8, 2016
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Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes |
Packaging
| Pin | 8 |
| Package Type | DGK |
| Industry STD Term | VSSOP |
| JEDEC Code | R-PDSO-G |
| Package QTY | 1000 |
| Carrier | SMALL T&R |
| Device Marking | SNRB |
| Width (mm) | 3 |
| Length (mm) | 3 |
| Thickness (mm) | .97 |
| Pitch (mm) | .65 |
| Max Height (mm) | 1.07 |
| Mechanical Data | Download |
Parametrics
| Control Mode | Constant on-time (COT) |
| Duty Cycle(Max) | 98 % |
| Iout(Max) | 6 A |
| Iq(Typ) | 0.4 mA |
| Number of Phases | 1 |
| Operating Temperature Range | -40 to 125 C |
| Package Group | VSSOP |
| Rating | Catalog |
| Regulated Outputs | 1 |
| Special Features | Enable |
| Switching Frequency(Max) | 2000 kHz |
| Switching Frequency(Min) | 500 kHz |
| Type | Controller |
| Vin(Max) | 5.5 V |
| Vin(Min) | 2.8 V |
| Vout(Max) | 4.5 V |
| Vout(Min) | 0.8 V |
Eco Plan
| RoHS | Compliant |
Design Kits & Evaluation Modules
- Evaluation Modules & Boards: LM1771EVAL
Low-Voltage Synchronous Buck Controller with Precision Enable and No External Compensation
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A)PDF, 103 Kb, Revision: A, File published: May 5, 2013
This application note discusses the Virtex-5 FPGA power supply prerequisites in terms of the multiplevoltage rail and current level requirements, output sequencing, and startup characteristics. - Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A)PDF, 178 Kb, Revision: A, File published: Apr 23, 2013
Of all the voltage regulator control strategies ever devised, the hysteretic regulator is probably about thesimplest. This control methodology simply turns a switch on when the output voltage is below a referenceand turns the switch off when the output rises to a slightly higher reference. The output ripple is thereforea direct function of the difference between the upper and lower reference
Model Line
Series: LM1771 (6)
- LM1771SMM/NOPB LM1771SSD/NOPB LM1771TMM/NOPB LM1771TSD/NOPB LM1771UMM/NOPB LM1771USD/NOPB
Manufacturer's Classification
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Down (Buck) > Buck Controller (External Switch)
