Datasheet Texas Instruments TPS61121RSAR
| Manufacturer | Texas Instruments |
| Series | TPS61121 |
| Part Number | TPS61121RSAR |
3.3-V 95% Efficient Boost Converter with 1.5-V 200-mA LDO for 1-Cell LiIon or Dual-Cell Applications 16-QFN -40 to 85
Datasheets
TPS6112x Synchronous Boost Converter With 1.1-A Switch and Integrated LDO datasheet
PDF, 1.5 Mb, Revision: D, File published: May 28, 2015
Extract from the document
Prices
Status
| Lifecycle Status | Obsolete (Manufacturer has discontinued the production of the device) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 16 | 16 |
| Package Type | RSA | RSA |
| Industry STD Term | VQFN | VQFN |
| JEDEC Code | S-PQFP-N | S-PQFP-N |
| Device Marking | 1121 | TPS6 |
| Width (mm) | 4 | 4 |
| Length (mm) | 4 | 4 |
| Thickness (mm) | .9 | .9 |
| Pitch (mm) | .65 | .65 |
| Max Height (mm) | 1 | 1 |
| Mechanical Data | Download | Download |
Parametrics
| Approx. Price (US$) | 2.00 | 1ku |
| Duty Cycle(Max)(%) | 100 |
| Iq(Typ)(mA) | 0.04 |
| Operating Temperature Range(C) | -40 to 85 |
| Package Group | TSSOP |
| Rating | Catalog |
| Regulated Outputs(#) | 2 |
| Special Features | Enable Light Load Efficiency Load Disconnect Power Good |
| Switch Current Limit(Min)(A) | 1.1 |
| Switch Current Limit(Typ)(A) | 1.6 |
| Switching Frequency(Max)(kHz) | 600 |
| Switching Frequency(Min)(kHz) | 400 |
| Type | Converter |
| Vin(Max)(V) | 5.5 |
| Vin(Min)(V) | 1.8 |
| Vout(Max)(V) | 3.3 |
| Vout(Min)(V) | 3.3 |
Eco Plan
| RoHS | Not Compliant |
| Pb Free | No |
Design Kits & Evaluation Modules
- Evaluation Modules & Boards: TPS61121EVM-205
TPS61121 Evaluation Module
Lifecycle Status: Active (Recommended for new designs) - Evaluation Modules & Boards: TPS61120EVM-205
TPS61120 Evaluation Module
Lifecycle Status: Active (Recommended for new designs) - Evaluation Modules & Boards: TPS61122EVM-205
TPS61122 Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- Minimizing Ringing at the Switch Node of a Boost ConverterPDF, 201 Kb, File published: Sep 15, 2006
The application report explains how to use proper board layout and/or a snubber to reduce high-frequency ringing at the switch node of a boost converter. - Basic Calculation of a Boost Converter's Power Stage (Rev. C)PDF, 186 Kb, Revision: C, File published: Jan 8, 2014
This application note gives the equations to calculate the power stage of a boost converter built with an IC with integrated switch and operating in continuous conduction mode. It is not intended to give details on the functionality of a boost converter (see Reference 1) or how to compensate a converter. See the references at the end of this document if more detail is needed. - Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. A)PDF, 1.1 Mb, Revision: A, File published: May 11, 2015
- Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain OutputsPDF, 130 Kb, File published: Sep 19, 2011
- Extending the Soft Start Time Without a Soft Start Pin (Rev. B)PDF, 387 Kb, Revision: B, File published: Jun 15, 2017
- IQ: What it is what it isn’t and how to use itPDF, 198 Kb, File published: Jun 17, 2011
- Performing Accurate PFM Mode Efficiency Measurements (Rev. A)PDF, 418 Kb, Revision: A, File published: Dec 11, 2018
When performing measurements on DC-DC converters using pulse frequency modulation(PFM)or any power save mode proper care must be taken to ensure that the measurements are accurate. An accurate PFM mode efficiency measurement is critical for systems which require high efficiency at low loads such as in smart home systems tablets wearables and metering. - LDO PSRR Measurement Simplified (Rev. A)PDF, 131 Kb, Revision: A, File published: Aug 9, 2017
This applicationreportexplainsdifferentmethodsof measuringthe PowerSupplyRejectionRatio(PSRR)of a Low-Dropout(LDO)regulatorand includesthe prosand consof thesemeasuringmethods - LDO Noise Demystified (Rev. A)PDF, 785 Kb, Revision: A, File published: Aug 9, 2017
Thisapplicationreportexplainsthe differencebetweennoiseand PSRRof an LDO.It also explainsthedifferentwaysnoiseis specifiedin LDOdatasheetsandwhichspecificationshouldbe usedin theapplication.Finallyit explainshow LDOnoiseis reduced.
Model Line
Series: TPS61121 (4)
- TPS61121PW TPS61121PWG4 TPS61121RSAR TPS61121RSARG4
Manufacturer's Classification
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Up (Boost) > Boost Converter (Integrated Switch)
