Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 5.5V |
| Voltage-Output(Min/Fixed) | 3.3V |
| VoltageDropout(Max) | 0.2V @ 200mA |
| Current-Output | 250mA |
| Current-Quiescent(Iq) | 110 µA |
| Current-Supply(Max) | 130 µA |
| PSRR | 85dB ~ 45dB (10Hz ~ 1MHz) |
| ControlFeatures | Enable |
| ProtectionFeatures | Over Current, Over Temperature, Under Voltage Lockout (UVLO) |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | 6-WFDFN |
Overview
Description
TPS72733DSER is a fixed 3.3 V low-dropout (LDO) regulator from TI’s TPS7273x family. It converts a higher input voltage to a stable 3.3 V rail with a small dropout, making it suitable for battery-powered and space-constrained electronics. The DSER suffix denotes the specific package/packaging options for this device (small SMD package). Key points: accepts typical input voltages up to about 6 V, provides regulated 3.3 V output with low quiescent current, and includes protective features (overcurrent, over-temperature, reverse current) with the need for input and output capacitors per the datasheet for stability. Common uses include powering microcontroller logic, sensors, and other peripherals on portable or compact boards. For exact electrical specs, pinout, recommended capacitors, and packaging details, refer to the TPS72733DSER datasheet and TI product page.
Equivalent
TPS72733DSER is TI’s 3.3 V LDO (enable, ~250 mA). Do you want TI-family equivalents or cross‑vendor parts? Cross‑vendor 3.3 V LDOs with enable and similar current: ADP3333 (Analog Devices), MIC5319-3.3, LT1763-3.3, AMS1117-3.3. TI-family substitutes (same footprint) include TPS72733DSE and other DS variants.
Features
Here are the key features of the TPS72733DSER:
- Fixed 3.3-V output low-dropout regulator (LDO)
- Input voltage range up to 5.5 V
- Ultra-low quiescent current (high efficiency in low-power apps)
- Low dropout for stable 3.3-V output under load
- Enable (EN) pin to turn regulator on/off
- Short‑circuit protection and thermal shutdown
- Robust protection features (current limit, reverse protection)
- Low-noise operation with good PSRR
- Small DSER package (tiny surface-mount footprint) suitable for space-constrained designs
- Ideal for portable/battery-powered and compact systems
Note: For exact electrical specs (quiescent current, dropout at a given load, PSRR, and protection thresholds), refer to the official datasheet.
- Fixed 3.3-V output low-dropout regulator (LDO)
- Input voltage range up to 5.5 V
- Ultra-low quiescent current (high efficiency in low-power apps)
- Low dropout for stable 3.3-V output under load
- Enable (EN) pin to turn regulator on/off
- Short‑circuit protection and thermal shutdown
- Robust protection features (current limit, reverse protection)
- Low-noise operation with good PSRR
- Small DSER package (tiny surface-mount footprint) suitable for space-constrained designs
- Ideal for portable/battery-powered and compact systems
Note: For exact electrical specs (quiescent current, dropout at a given load, PSRR, and protection thresholds), refer to the official datasheet.
Pinout
- Pin count: 8 pins (8-pin package, DSER variant)
- Function: Fixed-output low-dropout regulator (LDO) that provides a 3.3V output from Vin; pins include Vin, Vout, GND, EN (enable) and BYP (bypass) with remaining pins typically NC for this package.
- Function: Fixed-output low-dropout regulator (LDO) that provides a 3.3V output from Vin; pins include Vin, Vout, GND, EN (enable) and BYP (bypass) with remaining pins typically NC for this package.
Manufacturer
- Manufacturer: Texas Instruments (TI).
- What kind of company: A global American semiconductor company that designs and manufactures analog and embedded processing integrated circuits, headquartered in Dallas, Texas, and traded on NASDAQ (ticker: TXN).
- What kind of company: A global American semiconductor company that designs and manufactures analog and embedded processing integrated circuits, headquartered in Dallas, Texas, and traded on NASDAQ (ticker: TXN).
Application
TPS72733DSER is a fixed 3.3-V LDO regulator. Typical application areas:
- Power rail for microcontrollers, memory, and ADC/DAC front-ends in portable/battery-powered devices (IoT, wearables, medical sensors)
- RF/wireless modules and transceivers (Bluetooth, Zigbee, GPS) needing a clean 3.3-V supply
- Analog/mixed-signal front-ends (MEMS sensors, op-amps) that require a stable 3.3-V rail
- General-purpose 3.3-V regulation in consumer electronics (cameras, displays, audio devices)
- Post-regulator in compact power-management designs from higher Vin
- Power rail for microcontrollers, memory, and ADC/DAC front-ends in portable/battery-powered devices (IoT, wearables, medical sensors)
- RF/wireless modules and transceivers (Bluetooth, Zigbee, GPS) needing a clean 3.3-V supply
- Analog/mixed-signal front-ends (MEMS sensors, op-amps) that require a stable 3.3-V rail
- General-purpose 3.3-V regulation in consumer electronics (cameras, displays, audio devices)
- Post-regulator in compact power-management designs from higher Vin
Package
TPS72733DSER comes in a SOT-23-5 (SC-70-5) package.
