Datasheet Texas Instruments LM1770TMF/NOPB
Manufacturer | Texas Instruments |
Series | LM1770 |
Part Number | LM1770TMF/NOPB |
Low-Voltage SOT23 Synchronous Buck Controller With No External Compensation 5-SOT-23 -40 to 125
Datasheets
LM1770 Low-V SOT23 Synch Buck Cntrr w/No Ext Compensation datasheet
PDF, 862 Kb, Revision: C, File published: Apr 3, 2013
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Status
Lifecycle Status | Active (Recommended for new designs) |
Manufacture's Sample Availability | Yes |
Packaging
Pin | 5 |
Package Type | DBV |
Industry STD Term | SOT-23 |
JEDEC Code | R-PDSO-G |
Package QTY | 1000 |
Carrier | LARGE T&R |
Device Marking | SKKB |
Width (mm) | 1.6 |
Length (mm) | 2.9 |
Thickness (mm) | 1.2 |
Pitch (mm) | .95 |
Max Height (mm) | 1.45 |
Mechanical Data | Download |
Parametrics
Control Mode | Constant on-time (COT) |
Duty Cycle(Max) | 98 % |
Iout(Max) | 4 A |
Iq(Typ) | 0.4 mA |
Number of Phases | 1 |
Operating Temperature Range | -40 to 125 C |
Package Group | SOT-23 |
Rating | Catalog |
Regulated Outputs | 1 |
Special Features | Light Load Efficiency |
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: LM1770EVAL
Low-Voltage SOT23 Synchronous Buck Controller With No External Compensation
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- AN-1414 LM1770 Design Reference (Rev. A)PDF, 226 Kb, Revision: A, File published: Apr 23, 2013
This application report presents several reference designs that can be used to implement the TexasInstruments LM1770 Synchronous Buck Controller in a wide variety of configurations. - Advanced Topics in Powering FPGAsPDF, 645 Kb, File published: Mar 22, 2007
- 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: LM1770 (5)
- LM1770SMF/NOPB LM1770TMF/NOPB LM1770TMFX/NOPB LM1770UMF/NOPB LM1770UMFX/NOPB
Manufacturer's Classification
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Down (Buck) > Buck Controller (External Switch)