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Product Detailed Parameters
- Description：IC REG LINEAR 1.6V 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)：1.6V
- 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 LD6816CX4/16P,315 is a fixed-output Low DropOut regulator from NXP Semiconductors. It provides a nominal output voltage of 1.6 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 a 0.4 mm pitch.
Feature Summary
- Includes an integrated pull-down switching transistor that provides a low-ohmic output state when disabled.
- Features ultra-low noise performance with a typical RMS output noise voltage of 30 µV across the 10 Hz to 100 kHz frequency band.
- Offers high power supply rejection ratio (PSRR) of 55 dB at 1 kHz for effective ripple suppression.
Applications
- Analog and digital interfaces in mobile appliances requiring lower than standard supply voltages
- Smart phones, mobile phone handsets, and cordless telephones
- Digital still cameras, personal navigation devices, and portable media players
Procurement Notes
Verify the specific suffix '315' against official manufacturer documentation to confirm reel packaging specifications. Ensure compatibility with the required 1.6 V fixed output configuration. Confirm RoHS compliance status and check for any end-of-life notices or alternative part recommendations directly from NXP Semiconductors before finalizing procurement plans.
Selection Notes
Select this component for designs prioritizing minimal footprint due to its WLCSP4 package dimensions. It is suitable for battery-powered applications where low quiescent current and efficient operation near the dropout threshold are critical. Ensure the external load capacitor meets the minimum capacitance requirement for stability.
Part Context
This device 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 versions with high-ohmic outputs and those with auto-discharge functions like the 'P' variant specified here.
Replacement Considerations
Consult NXP Semiconductors for verified substitute part numbers. Cross-reference with other LDOs offering similar 1.6 V output, 150 mA current capability, and WLCSP4 packaging if availability is constrained.
FAQ
What is the function of the pull-down transistor in the LD6816CX4/16P?
The integrated pull-down transistor ensures a low-ohmic output state when the device is disabled, actively discharging the output voltage rather than leaving it in a high-impedance state.
How does the LD6816CX4/16P handle over-temperature conditions?
The device includes built-in over-temperature protection that shuts down the regulator if the junction temperature exceeds the specified limit, preventing damage during thermal overload.
