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Product Detailed Parameters
- Description：IC REG LINEAR 2.9V 300MA 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)：0.16V @ 300mA
- Current - Output：300mA
- Current - Quiescent (Iq)：100 µA
- Current - Supply (Max)：250 µA
- PSRR：55dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- 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 LD6836CX4/C29P is a fixed positive Low Dropout (LDO) regulator manufactured by NXP Semiconductors. It provides a nominal output voltage of 2.9 V with an input voltage range from 2.3 V to 5.5 V. The device supports a maximum output current of 300 mA and features a typical dropout voltage of 90 mV at full load. It is housed in a WLCSP-4 package measuring 0.76 mm x 0.76 mm with a 0.4 mm pitch. The part includes over-temperature protection, output current limiting, and an integrated pull-down transistor for auto discharge.
Feature Summary
- Integrated pull-down switching transistor provides a low-ohmic output state when disabled.
- Ultra-low dropout performance ensures high efficiency across the operating range.
- Low quiescent current consumption in shutdown mode enhances battery life.
- Built-in electrostatic discharge protection up to 10 kV Human Body Model.
Applications
- Smartphones and mobile phone handsets
- Cordless telephones
- Digital still cameras
- Portable media players
Procurement Notes
Verify the specific suffix 'C' indicates the presence of backside coating on the WLCSP package. Confirm the 'P' designation corresponds to the pull-down output configuration rather than the high-ohmic variant. Ensure the ordering code matches the required 2.9 V nominal output specification before finalizing procurement.
Selection Notes
Select this component for portable designs requiring miniaturization due to its small WLCSP footprint. Choose the 'P' version if active discharge of the output capacitor upon shutdown is required. Verify that the application input voltage remains within the 2.3 V to 5.5 V range to ensure stable regulation.
Part Context
This LDO belongs to the LD6836 series, designed for ultra-low dropout and low noise applications. The CX4 variant specifically utilizes a wafer-level chip-scale package suitable for space-constrained mobile electronics. The series offers various fixed output voltages and package options including SOT753.
Replacement Considerations
LD6836CX4/29H: High-ohmic output variant without auto discharge function.
FAQ
What is the behavior of the output pin when the enable signal is low?
The LD6836CX4/C29P contains a pull-down switching transistor that provides a low-ohmic output state, actively discharging the output capacitance.
Does this device support operation below 2.3 V input?
No, the recommended operating conditions specify a minimum input voltage of 2.3 V for proper regulator functionality.
