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Product attributes Property Value
Manufacturer ETEK MICROELECTRONICS
Product Series ET631XX
Packaging Tape & Reel (TR) |
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 5.5V
Voltage - Output (Min/Fixed) 2.8V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.27V @ 150mA
Current - Output 150mA
Current - Quiescent (Iq) 900 nA
Current - Supply (Max) -
PSRR 45dB (1kHz)
Control Features Enable
Protection Features Over Current, Over Temperature
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 4-XDFN Exposed Pad
Supplier Device Package 4-DFN (1x1)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ET63128YB is an ultra-low-power LDO regulator from ETEK Microelectronics, offering a fixed 2.8V output at up to 150mA. Its standout feature is a mere 900 nA quiescent current, making it one of the most efficient regulators in its class. The low dropout voltage of 0.27V and compact 4-DFN (1x1) package make it perfect for battery-powered, space-constrained designs requiring extended operational life.

  • Industry-Leading Low IQ: 900 nA quiescent current extends battery life in always-on applications by years.
  • Low Dropout: 0.27V dropout at 150mA enables operation from nearly depleted batteries.
  • Miniature Footprint: 4-DFN (1x1) package fits into the smallest wearable and implantable devices.
  • Stable Output: 45dB PSRR at 1kHz provides reliable filtering for sensitive loads.

Energy-Harvesting Systems

The 900 nA quiescent current is critical for solar or thermal energy harvesters where every nanoamp of standby current directly impacts system wake-up time.

Real-Time Clocks (RTC)

Maintaining a 2.8V rail for RTC backup with 900nA IQ ensures years of operation from a small coin cell battery.

Wireless Sensor Nodes

With 150mA output and low dropout, it efficiently powers MCUs and sensors in duty-cycled wireless networks.

Portable Gas Detectors

The low dropout of 0.27V allows operation from a 3.0V battery down to 2.8V, maximizing usable battery capacity.

Medical Implants

Ultra-low quiescent current and tiny package make it suitable for pacemakers and neurostimulators where battery life is paramount.

Smart Meters

Reliable 2.8V output with 45dB PSRR ensures stable operation in electrically noisy utility environments.

Q: What is the output voltage?
A: The ET63128YB provides a fixed 2.8V output voltage.
Q: What is the maximum output current?
A: It can supply up to 150mA of continuous current.
Q: What is the dropout voltage?
A: Dropout is only 0.27V at 150mA, allowing operation with very low headroom.
Q: What is the quiescent current?
A: It features an ultra-low quiescent current of just 900 nA, ideal for always-on applications.
Q: What is the package?
A: Available in a compact 4-DFN (1x1) package.
Q: What is the PSRR?
A: PSRR is 45dB at 1kHz, providing adequate filtering for low-frequency noise.
Base Product Number : ET63128YB
150mA 2.8V 4-DFN 900nA ETEK LDO Linear Regulator Ultra-Low Power
Q: What is the output voltage?
A: The ET63128YB provides a fixed 2.8V output voltage.
Q: What is the maximum output current?
A: It can supply up to 150mA of continuous current.
Q: What is the dropout voltage?
A: Dropout is only 0.27V at 150mA, allowing operation with very low headroom.
Q: What is the quiescent current?
A: It features an ultra-low quiescent current of just 900 nA, ideal for always-on applications.
Q: What is the package?
A: Available in a compact 4-DFN (1x1) package.
Q: What is the PSRR?
A: PSRR is 45dB at 1kHz, providing adequate filtering for low-frequency noise.