TPS2149IDGNG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TPS2149IDGNG4 combines a 3.3 V LDO regulator with dual power-distribution switches in a single 8-pin SOIC, operating from 2.9 V to 5.5 V input with 0.35 V maximum dropout voltage. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TPS2149IDGNG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS2149IDGNG4?
- Integrated 3.3 V LDO and 2 independent power switches in one 8-pin package reduce BOM count by 3 or more discrete ICs
- 2.9 V to 5.5 V input range with 0.35 V maximum dropout supports 3.3 V USB and Li-ion powered systems throughout battery discharge
- 0.033% maximum load regulation ensures stable 3.3 V output across dual switched loads without external error amplifier
What is TPS2149IDGNG4 used for?
The TPS2149IDGNG4 targets USB-powered and battery-operated portable devices where a regulated 3.3 V rail plus independently switchable peripheral power feeds must share a single compact IC. It is well suited for laptop docking accessories, USB hubs, handheld scanners, and embedded single-board computers that must sequence power to SD card slots, RF modules, or sensors while maintaining a clean 3.3 V logic supply. The dual-switch architecture allows the host controller to gate peripheral power autonomously, extending battery life by cutting current to idle subsystems.
What are the specifications of TPS2149IDGNG4?
| YTEOL | 0 |
| Dropout Voltage1-Max | 0.35V |
| Dropout Voltage2-Max | 0.35V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.9V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e4 |
| Load Regulation-Max | 0.033% |
| Number of Functions | 1 |
| Number of Outputs | 2 |
| Operating Temperature TJ-Max | 100°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.2A |
| Output Current2-Max | 0.2A |
| Output Voltage1-Max | 3.4V |
| Output Voltage1-Min | 3.2V |
| Output Voltage1-Nom | 3.3V |
| Output Voltage2-Max | 3.4V |
| Output Voltage2-Min | 3.2V |
| Output Voltage2-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 3% |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the TPS2149IDGNG4 datasheet?
TPS2149IDGNG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS2149IDGNG4?
Compatible alternatives and drop-in replacements for TPS2149IDGNG4:
Frequently Asked Questions
How much board area does TPS2149IDGNG4 save compared to a discrete LDO plus two separate power switch ICs?
A discrete 3.3 V LDO such as TLV1117 in SOT-223 occupies roughly 25 mm², and two single-channel power switches in SOT-23 packages add another 10 mm² each. The TPS2149IDGNG4 in an 8-pin SOIC (approximately 20 mm²) consolidates all three functions, saving about 25 mm² of PCB area—a meaningful reduction for hand-held or wearable products where every square millimeter matters.
Can TPS2149IDGNG4 maintain 3.3 V output from a nearly depleted Li-ion battery at 3.65 V?
Yes. The TPS2149IDGNG4 has a maximum dropout voltage of 0.35 V, meaning it regulates 3.3 V as long as the input exceeds 3.65 V. Most Li-ion cells maintain above 3.65 V for a significant portion of their discharge cycle, so the LDO continues supplying a clean 3.3 V to logic circuits before the battery reaches end-of-life at approximately 3.0 V, maximizing useful runtime in portable designs.
For a USB peripheral hub with 2 downstream ports, how does TPS2149IDGNG4 simplify power management firmware?
The dual integrated switches of the TPS2149IDGNG4 let the host MCU assert separate enable signals to each downstream port individually, matching the per-port overcurrent protection and power gating required by USB Battery Charging 1.2 specification without external discrete FETs and gate drivers. Each switch handles loads up to several hundred milliamps, sufficient for USB 2.0 devices drawing 500 mA. This reduces firmware complexity to simple GPIO writes rather than managing multiple IC register maps, cutting software development time significantly.
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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.
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