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Product Detailed Parameters
- Description：IC REG LINEAR 3.6V 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)：3.6V
- 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 LD6816CX4/36P,315 is a fixed-output Low Dropout regulator (LDO) from NXP Semiconductors. It provides a nominal output voltage of 3.6 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 incorporates an integrated pull-down switching transistor for auto-discharge functionality when disabled. The component is housed in a WLCSP4 package with a 0.4 mm pitch.
Feature Summary
- Integrated pull-down switching transistor ensures a low-ohmic output state during shutdown for rapid discharge.
- Ultra-low dropout performance minimizes power consumption and maximizes efficiency under varying loads.
- Low quiescent current in shutdown mode supports extended battery life in portable applications.
- Built-in over-temperature protection and output current limiter safeguard the device against fault conditions.
Applications
- Analog and digital interfaces requiring lower than standard supply voltages in mobile appliances
- Smart phones, mobile phone handsets, and cordless telephones
- Digital still cameras, mobile internet devices, personal navigation devices, and portable media players
Procurement Notes
Verify the specific suffix '315' against official documentation to confirm reel packaging specifications. Ensure compatibility with the required WLCSP4 footprint and soldering profiles. Confirm that the 3.6 V fixed output aligns with system design requirements before procurement.
Selection Notes
Select this component for designs requiring a compact LDO with active discharge capabilities. The 3.6 V output is suitable for powering components needing stable voltage near the upper end of the operating range. Consider the WLCSP4 package size constraints and thermal dissipation requirements on the PCB layout.
Part Context
This part belongs to the LD6816 series of ultra-low dropout regulators designed for miniaturization. The 'P' designation indicates the inclusion of an auto-discharge function via a pull-down transistor, distinguishing it from high-ohmic variants. The series targets portable electronics where space and power efficiency are critical.
Replacement Considerations
LD6816CX4/36H: High-ohmic output variant without auto-discharge.
FAQ
What is the difference between the LD6816CX4/xxP and LD6816CX4/xxH versions?
The LD6816CX4/xxP version includes an integrated pull-down switching transistor that provides a low-ohmic output state when disabled, enabling auto-discharge. The LD6816CX4/xxH version exhibits a high-ohmic (3-state) output state when disabled.
How does the enable pin control the operation of the LD6816CX4/36P?
The enable pin is active HIGH. Applying a voltage above the HIGH-level threshold activates the regulator, while keeping the voltage below the LOW-level threshold places the device in the off state, engaging the auto-discharge function if applicable.
