ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 1.25V/1.8V 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)：1.25V, 1.8V
- 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 LD6938CX6/18125PLJ is a dual low-dropout regulator (LDO) from NXP Semiconductors, delivering two independent 300 mA outputs with fixed nominal voltages of 1.8 V and 1.25 V. It operates within an input voltage range of 1.7 V to 5.5 V. The device features a typical dropout voltage of 240 mV at full load and offers high power supply rejection ratio (PSRR) of 80 dB at 1 kHz. It includes integrated soft start, output current limiting with foldback, overtemperature protection, and auto-discharge functionality for rapid shutdown. Packaged in a compact 6-bump WLCSP measuring 1.2 mm x 0.8 mm.
Feature Summary
- Dual LDO architecture providing independent 300 mA regulation channels
- Integrated soft start circuit limits inrush current during startup
- Auto-discharge function ensures rapid output voltage decay upon disable
- Comprehensive protection including thermal shutdown and current limiting
Applications
- Smartphones
- Tablet PCs
- Mobile handsets
- Portable media players
Procurement Notes
Verify the specific suffix PLJ confirms the 1.8 V and 1.25 V output configuration and auto-discharge behavior. Confirm package availability matches the 6-bump WLCSP specification. Ensure design compliance with the recommended external capacitor values for stability. Check for any recent product status changes or obsolescence notices on the manufacturer website before finalizing procurement plans.
Selection Notes
Select this component when space-constrained designs require dual regulated rails from a single IC. It is suitable for applications needing low noise and high PSRR. Verify that the required output voltages match the available fixed options or request custom versions. Ensure the input voltage range covers the system's minimum operating conditions. Consider the thermal resistance characteristics if multiple units are placed closely together.
Part Context
This part belongs to the LD6938 series of dual low-dropout regulators designed for portable electronics. The series emphasizes small footprint and low standby current. Other variants in the family offer different fixed output voltage combinations and optional delayed start-up circuits. The WLCSP6 package allows for efficient PCB real estate usage in dense mobile device layouts.
Replacement Considerations
Direct replacements must match the dual 300 mA capability, WLCSP6 package, and specific 1.8 V/1.25 V output configuration. Verify pin compatibility and electrical characteristics such as dropout voltage and PSRR. Ensure the replacement supports auto-discharge if required by the design.
