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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V/3.3V 6-WLCSP
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：2
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.8V, 3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.4V @ 300mA, 0.4V @ 300mA
- Current - Output：300mA, 300mA
- Current - Quiescent (Iq)：75 µA
- Current - Supply (Max)：-
- PSRR：80dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Soft Start
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：6-XFBGA, WLCSP
- Supplier Device Package：6-WLCSP (1.2x0.80)
Download product information
Overview
The LD6938CX6/1833PLJ is a dual Low Dropout (LDO) regulator from NXP, delivering two separate fixed output voltages of 1.8 V and 3.3 V. Each channel provides an output current capability of 300 mA with a typical voltage drop of 240 mV at full load. The device operates within an input voltage range of 1.7 V to 5.5 V and features low quiescent current and extremely low standby current. It includes integrated soft start, overcurrent protection with foldback, and thermal shutdown. The second output supports optional delayed startup and auto-discharge functionality upon disablement.
Feature Summary
- Dual independent LDO channels providing separate fixed nominal output voltages
- Integrated soft-start circuitry to control inrush current during startup
- Auto-discharge function for rapid output voltage decay when disabled
- Optional delayed startup circuit available for the second regulator output
Applications
- Smartphones
- Tablet PCs
- Mobile handsets
- Portable media players
Procurement Notes
Verify the specific suffix PLJ against the official datasheet to confirm the 1.8 V / 3.3 V output configuration and auto-discharge feature set. Ensure the ordering code matches the required package variant and that the component status aligns with current production availability before finalizing design-in decisions.
Selection Notes
Select this component for applications requiring two distinct low-noise power rails from a single compact package. The dual-channel architecture simplifies board layout compared to using discrete regulators. Consider the auto-discharge feature if rapid power-down sequencing is required for the connected loads.
Part Context
This part belongs to the LD6938 series of small-size dual LDO regulators. The series offers configurable output voltages ranging from 1.2 V to 3.3 V. The CX6 designation indicates the WLCSP6 wafer-level chip-scale package, which minimizes footprint size for space-constrained portable electronics designs.
Replacement Considerations
Other variants within the LD6938 series offer different output voltage combinations or high-ohmic output modes. Verify pin compatibility and electrical specifications when substituting with other LD6938 suffixes.
