TPS62742DSST Texas Instruments (HVSON) In Stock
TPS62742DSST is a voltage-mode step-down switching regulator with PFM/PWM control by Texas Instruments. Key specs: 3 V to 5.5 V input, 1.8 V to 3.3 V adjustable output, 12-pin SON package. From $0.90, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- TPS62742DSST Datasheet PDF
- Price
- From $0.7992(MOQ 10)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual PWM/PFM control mode automatically switches to PFM at light loads for best-in-class efficiency over the full current range
- Adjustable output voltage from 1.8 V to 3.3 V covers common MCU, RF, and sensor supply rails
- Compact 12-pin SON package minimizes PCB footprint for battery-powered portable and IoT devices
Applications
TPS62742DSST is optimized for IoT sensor nodes, wireless modules, and portable consumer electronics powered by a 3.6 V single-cell Li-ion battery where the output rail must be stepped down to 1.8 V or 3.3 V with high efficiency across a wide load range. The automatic PFM/PWM mode transition reduces quiescent current at standby, extending battery life in duty-cycled applications. Its compact SON-12 footprint also suits smartwatches, hearing aids, and medical patches where board area is a premium.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | ALSO OPERATES IN PFM CONTROL TECHNIQUE, OUTPUT VOLTAGE RANGE FROM 1.8 VOLT TO 3.3 VOLT |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | R-PDSO-N12 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.4A |
| Output Voltage-Max | 3.3V |
| Output Voltage-Min | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC12,.08,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2000kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS62742DSST:
Switching Regulator, Voltage-mode, 0.4A, 2000kHz Switching Freq-Max, PDSO12
Frequently Asked Questions
What input and output voltage ranges does TPS62742DSST support in a step-down design?
TPS62742DSST accepts an input voltage from 3 V to 5.5 V, with a nominal operating point at 3.6 V, and provides an adjustable output from 1.8 V to 3.3 V—covering the most common MCU and radio supply rails in a single device with no additional external regulators.
How does TPS62742DSST's PFM mode improve battery life in duty-cycled IoT applications?
When load current drops below a threshold, the TPS62742DSST transitions from PWM to PFM control, reducing switching frequency and quiescent current substantially—often below 10 µA—so a 200 mAh coin cell powering a sensor that sleeps 99% of the time can run for months longer than with a fixed-frequency converter.
What package does TPS62742DSST use and how small is its PCB footprint?
The TPS62742DSST uses a 12-pin SON (R-PDSO-N12) package with an exposed thermal pad, measuring approximately 2 mm × 2 mm, one of the smallest footprints available for an integrated switching regulator—ideal for smartwatch and medical-patch designs where total component area is counted in square millimeters.
When is TPS62742DSST a better choice than an LDO regulator for a 3.6 V Li-ion battery design?
A linear LDO converting 3.6 V to 1.8 V dissipates 50% of input power as heat at any load—meaning at 100 mA it burns 180 mW—while TPS62742DSST's switching architecture typically achieves 85%–92% efficiency at the same operating point, delivering over 3× longer battery runtime and eliminating the need for thermal relief copper.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $1.3340 | $13.34 |
| 25+ | $1.2136 | $30.34 |
| 100+ | $1.0807 | $108.07 |
| 1000+ | $0.8964 | $896.40 |
| 5000+ | $0.8810 | $4405.00 |
| 10000+ | $0.7992 | $7992.00 |
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