TPS78101DDCTG4 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
The TPS78101DDCTG4 is an adjustable low-dropout (LDO) linear voltage regulator from Texas Instruments, providing 1.22 V to 5.25 V output at up to 150 mA with only 200 mV typical dropout voltage. In a 5-pin TSOT-23 package, it is suited for battery-powered and space-constrained portable power supply designs.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- TPS78101DDCTG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable output from 1.22 V to 5.25 V with external resistors
- 150 mA maximum output current for light-load power rails
- 200 mV typical dropout voltage for efficient low-battery operation
- 0.25 V maximum dropout voltage guarantees performance near battery cutoff
- 2% maximum load regulation ensures stable output under varying loads
- 5-pin TSOT-23 package for ultra-compact portable power designs
Applications
The TPS78101DDCTG4 is used to regulate supply voltages for low-power microcontrollers, sensors, and analog front-ends in battery-operated portable devices such as wearables, IoT nodes, and handheld instruments. Its 200 mV typical dropout voltage allows efficient regulation from a single Li-ion cell even as the battery approaches its discharge cutoff. The adjustable output range from 1.22 V to 5.25 V also makes it a versatile post-regulator for point-of-load power trees in embedded systems.
Specifications
| YTEOL | 0 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.25V |
| Dropout Voltage1-Nom | 0.2V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Line Regulation-Max (%/V) | 0.27 |
| Load Regulation-Max(%) | 2% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.15A |
| Output Voltage1-Max | 5.25V |
| Output Voltage1-Min | 1.22V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | PMOS |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage range and current capacity of the TPS78101DDCTG4?
The TPS78101DDCTG4 delivers an adjustable output voltage from 1.22 V to 5.25 V, set by an external resistor divider, and supports a maximum output current of 150 mA. This combination covers common logic supply voltages such as 1.8 V, 2.5 V, 3.3 V, and 5 V for low-power embedded designs.
How low a dropout voltage does the TPS78101DDCTG4 achieve, and why does this matter for battery applications?
The TPS78101DDCTG4 achieves a typical dropout voltage of only 200 mV and a guaranteed maximum of 250 mV at 150 mA load. For a Li-ion battery discharging from 3.7 V to 3.0 V, this means the device can maintain a regulated 3.3 V output down to a battery voltage of approximately 3.5 V, significantly extending usable runtime.
Can the TPS78101DDCTG4 power 3.3 V microcontroller rails in a space-constrained IoT design?
Yes, the TPS78101DDCTG4 is well suited for powering 3.3 V microcontroller and sensor rails in IoT designs. The 5-pin TSOT-23 package occupies minimal PCB area, and the 150 mA output handles typical MCU active-mode currents of 10 mA to 100 mA. Two external resistors set the output to 3.3 V with a line regulation of 0.27%/V.
How does load regulation performance affect analog circuit accuracy when using the TPS78101DDCTG4?
The TPS78101DDCTG4 specifies a maximum load regulation of 2%, meaning the output voltage shifts by at most 2% across its 0 mA to 150 mA load range. For a 3.3 V output, this corresponds to a maximum variation of 66 mV, which is acceptable for most microcontroller rails but should be evaluated against ADC reference requirements in high-precision analog designs.
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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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