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Product Detailed Parameters
- Description：IC REG LINEAR 2.9V 150MA 4-WLCSP
- Series：-
- Mfr：NXP USA Inc.
- Package：Bulk
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：2.9V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.075V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：100 µA
- Current - Supply (Max)：250 µA
- PSRR：55dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Transient Voltage
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：4-XFBGA, WLCSP
- Supplier Device Package：4-WLCSP (0.76x0.76)
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Overview
The LD6816CX4/29P,315 is a fixed-output Low Dropout Regulator (LDO) from NXP Semiconductors. It provides a nominal output voltage of 2.9 V with a maximum output current rating of 150 mA. The device operates within an input voltage range of 2.3 V to 5.5 V and features a typical dropout voltage of 45 mV at full load. It utilizes a WLCSP4 package with dimensions of 0.76 mm x 0.76 mm and a 0.4 mm pitch. Key electrical characteristics include a quiescent current of 0.1 µA in shutdown mode, 30 µV RMS output noise, and 55 dB Power Supply Rejection Ratio at 1 kHz.
Feature Summary
- Integrated pull-down switching transistor for auto discharge function when disabled
- Ultra-low dropout performance ensuring high efficiency at low voltage differentials
- Low noise operation suitable for sensitive analog and digital interfaces
- Built-in over-temperature protection and output current limiting
Applications
- Smart phones and mobile phone handsets
- Cordless telephones
- Digital still cameras
- Portable media players
Procurement Notes
Verify the specific suffix '315' against official NXP documentation to confirm reel packaging specifications. Ensure compatibility with RoHS and halogen-free requirements. Confirm availability status as discontinued or active through authorized channels before design finalization.
Selection Notes
Select this component for applications requiring a compact footprint and precise 2.9 V supply rail. The P-suffix variant is necessary if an automatic low-ohmic discharge state upon disablement is required. Verify that the external load capacitance meets the minimum stability requirement of 0.7 µF.
Part Context
This part belongs to the LD6816 series of ultra-low dropout regulators designed for portable electronics. The series offers various fixed output voltages and package options, including high-ohmic (H) and pull-down (P) variants. The CX4 designation indicates the WLCSP4 package configuration.
Replacement Considerations
LD6816CX4/29P
FAQ
What is the behavior of the output pin when the enable signal is low?
The LD6816CX4/29P contains a pull-down switching transistor that provides a low-ohmic output state (auto discharge function) when the device is disabled.
What is the minimum recommended external load capacitance?
The minimum value of capacitance for stability and correct operation is 0.7 µF.
