Texas Instruments LP3988IMFX-3.3/NOPB

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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Cut Tape (CT) | Tape & Reel (TR)
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 6V
Voltage - Output (Min/Fixed) 3.3V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.15V @ 150mA
Current - Output 150mA
Current - Quiescent (Iq) 120 µA
Current - Supply (Max) 200 µA
PSRR 65dB ~ 45dB (1kHz ~ 10kHz)
Control Features Enable, Power Good
Protection Features Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Supplier Device Package SOT-23-5
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LP3988IMFX-3.3/NOPB from Texas Instruments is a fixed 3.3V LDO delivering 150mA. With 120 µA quiescent current and 0.15V dropout, it's optimized for battery-powered devices. The SOT-23-5 package is ideal for space-limited applications, and PSRR of 65dB at 1kHz ensures clean output.

  • Low Dropout: 0.15V at 150mA maximizes efficiency when input voltage is close to output.
  • Compact Size: SOT-23-5 package is ideal for miniaturized consumer electronics.
  • Good Noise Rejection: 65dB PSRR at 1kHz reduces ripple from switching converters.
  • Stable Output: Designed for low ESR ceramic capacitors, simplifying BOM.

Mobile Phone Audio Codecs

3.3V output with 65dB PSRR at 1kHz provides clean supply for audio codecs, reducing noise and improving signal-to-noise ratio in voice and music playback.

Bluetooth Modules

150mA is sufficient for BLE SoCs and RF front-ends. Low dropout of 0.15V allows operation from a 3.6V Li-ion battery down to 3.45V.

Digital Cameras

Powers image sensors and DSP cores at 3.3V, with stable output during high-current flash operations.

GPS Receivers

Low noise characteristics prevent interference with sensitive RF reception, ensuring accurate positioning.

Portable Gaming Consoles

Compact SOT-23-5 package fits tight layouts, while 120 µA quiescent current helps conserve battery during standby.

Smart Home Sensors

Reliable 3.3V rail for temperature, humidity, and motion sensors, with low dropout extending operational life from battery packs.

Q: What is the output voltage?
A: Fixed 3.3V output.
Q: What is the maximum current?
A: 150mA maximum output current.
Q: What is the input voltage range?
A: Not specified in provided data; refer to the datasheet.
Q: What is the dropout voltage?
A: 0.15V at 150mA load.
Q: What is the quiescent current?
A: 120 µA quiescent current.
Q: What package is available?
A: SOT-23-5 package.
Base Product Number : LP3988IMF-3.3
150mA 3.3V Audio LDO Linear Regulator Low Dropout SOT-23-5 Texas Instruments
Q: What is the output voltage?
A: Fixed 3.3V output.
Q: What is the maximum current?
A: 150mA maximum output current.
Q: What is the input voltage range?
A: Not specified in provided data; refer to the datasheet.
Q: What is the dropout voltage?
A: 0.15V at 150mA load.
Q: What is the quiescent current?
A: 120 µA quiescent current.
Q: What package is available?
A: SOT-23-5 package.