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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 LD6836CX4/29H,315 is a fixed positive Low Dropout (LDO) regulator manufactured by NXP USA Inc. It provides a nominal output voltage of 2.9 V with a maximum dropout voltage of 0.16 V at a 300 mA load. The device operates within an input voltage range of 2.3 V to 5.5 V and features a typical quiescent current of 70 µA. Packaged in a WLCSP-4 format measuring 0.76 mm x 0.76 mm, it supports junction temperatures from -40 °C to +125 °C.
Feature Summary
- Ultra-low dropout performance ensuring high efficiency under varying load conditions
- Low noise operation suitable for sensitive analog and digital interfaces
- Integrated protection mechanisms including over-temperature shutdown and output current limiting
- High-ohmic output state when disabled to prevent leakage in multi-rail systems
Applications
- Smartphones and mobile phone handsets
- Digital still cameras
- Portable media players
- Personal navigation devices
Procurement Notes
Verify the specific suffix '315' against official NXP documentation to confirm tape-and-reel specifications or lot coding details not explicitly detailed in the general datasheet. Ensure compatibility with RoHS compliance requirements for your manufacturing process. Cross-reference the marking code 'P' on the package to confirm the pull-down transistor functionality if applicable, although the 'H' suffix typically denotes high-ohmic behavior.
Selection Notes
Select this component for applications requiring precise 2.9 V regulation in space-constrained portable designs. The WLCSP-4 package offers significant miniaturization benefits compared to traditional SOT packages. Consider the low quiescent current for battery-powered devices where standby power consumption is critical. Verify that the external capacitor ESR meets the stability requirements specified in the application information section.
Part Context
This part belongs to the LD6836 series of ultra-low dropout regulators designed for mobile appliances. The series includes variants with different output voltages ranging from 1.2 V to 3.6 V and various package options such as WLCSP-4 and SOT753. The 'H' designation indicates a high-ohmic output state when disabled, distinguishing it from 'P' versions which feature an auto-discharge function.
Replacement Considerations
Direct substitutes include other LD6836CX4 variants with different output voltages or the LD6836TD series in SOT753 packaging. Ensure any replacement maintains the same output voltage tolerance and package footprint. Verify that the alternative device supports the required 300 mA output current and operates within the same input voltage range.
