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Product attributes Property Value
Manufacturer ETEK MICROELECTRONICS
Product Series
Packaging Tape & Reel (TR) |
Output Configuration Positive
Output Type Adjustable
Number of Regulators 1
Voltage - Input (Max) 5.5V
Voltage - Output (Min/Fixed) 0.5V
Voltage - Output (Max) 3V
Voltage Dropout (Max) -
Current - Output 1A
Current - Quiescent (Iq) 160 µA
Current - Supply (Max) -
PSRR 75dB (1kHz)
Control Features Enable
Protection Features Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 6-XFBGA, WLCSP
Supplier Device Package 6-WLCSP (1.15x0.75)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ET5A3ADJZB is a fixed 3V low dropout regulator from ETEK Microelectronics, capable of delivering up to 1A. It features a low quiescent current of 160µA and excellent PSRR of 75dB at 1kHz. The ultra-compact 6-WLCSP package is designed for space-constrained, high-performance portable applications.

  • High output current (1A) supports demanding loads.
  • Ultra-small WLCSP package saves significant PCB area.
  • Excellent PSRR (75dB @ 1kHz) for clean power delivery.
  • Low quiescent current (160µA) for battery efficiency.

High-Current Portable Devices

With 1A output capability, this LDO powers application processors and power-hungry peripherals in smartphones and tablets.

Space-Constrained Wearables

The ultra-small 6-WLCSP package (1.15x0.75mm) is ideal for compact wearable electronics where board area is critical.

Noise-Sensitive RF Front-Ends

75dB PSRR at 1kHz ensures minimal supply noise for RF transceivers, improving signal integrity.

Battery-Powered IoT Sensors

Low 160µA quiescent current helps maximize battery life in always-on IoT devices.

Camera Modules

Stable 3V rail for image sensors, with high current capability for rapid autofocus and flash charging.

Q: What is the output voltage of the ET5A3ADJZB?
A: The output voltage is fixed at 3V.
Q: What is the maximum output current?
A: It can deliver up to 1A.
Q: What is the input voltage range?
A: The input voltage range is not specified; the provided data lists 0.5V, which may be a typo. Refer to the datasheet.
Q: What is the quiescent current?
A: The quiescent current is 160µA.
Q: What is the PSRR?
A: PSRR is 75dB at 1kHz.
Q: What package is available?
A: It comes in a 6-WLCSP (1.15x0.75) package.
Base Product Number : ET5A3ADJZB
1A 3V ETEK High Current LDO Linear Regulator Low Dropout WLCSP
Q: What is the output voltage of the ET5A3ADJZB?
A: The output voltage is fixed at 3V.
Q: What is the maximum output current?
A: It can deliver up to 1A.
Q: What is the input voltage range?
A: The input voltage range is not specified; the provided data lists 0.5V, which may be a typo. Refer to the datasheet.
Q: What is the quiescent current?
A: The quiescent current is 160µA.
Q: What is the PSRR?
A: PSRR is 75dB at 1kHz.
Q: What package is available?
A: It comes in a 6-WLCSP (1.15x0.75) package.