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Product Detailed Parameters
- Description：IC REG LIN 2.9V 150MA DFN1010C-4
- 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)：0.25V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：35 µA
- Current - Supply (Max)：150 µA
- PSRR：75dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current, Transient Voltage
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：4-UDFN Exposed Pad
- Supplier Device Package：DFN1010C-4
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Overview
The LD6805K/29H,115 is a low-dropout regulator (LDO) from the LD6805 series, manufactured by NXP Semiconductors. It provides a fixed nominal output voltage of 2.9 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 250 mV at full load. It offers high power supply rejection ratio (PSRR) of 75 dB at 1 kHz and low quiescent current in shutdown mode. The component utilizes a DFN1010C-4 plastic package (SOT1194-1) measuring 1 x 1 x 0.55 mm.
Feature Summary
- Provides a fixed 2.9 V output with 150 mA current capability
- Features high PSRR of 75 dB for effective noise suppression
- Includes auto discharge function via pull-down transistor in disabled state
- Operates with low quiescent current and integrated ESD protection
Applications
- Smart phones and mobile phone handsets
- Digital still cameras and portable media players
- Mobile internet devices and personal navigation devices
- Cordless telephones requiring lower than standard supply voltages
Procurement Notes
Verify the specific ordering suffix '115' against official NXP documentation to confirm packaging details such as reel size or tape-and-reel specifications. Ensure the application design accounts for the required external load capacitance of 1.0 µF with appropriate ESR values to maintain stability. Confirm that the thermal resistance characteristics align with the intended PCB layout and ambient temperature conditions for reliable operation.
Selection Notes
Select this component when a stable 2.9 V rail is required for portable electronics with space constraints. The LD6805K variant is suitable for designs needing a low-ohmic output state upon disablement, facilitating faster discharge of output capacitors. Consider the 150 mA limit and 2.3 V minimum input voltage to ensure adequate headroom for the target application's power budget and efficiency requirements.
Part Context
The LD6805K/29H,115 belongs to the LD6805 series of small-size LDO regulators designed for component miniaturization. This family is characterized by ultra-high PSRR and monolithic silicon technology. The 'K' designation indicates the inclusion of a pull-down switching transistor for auto-discharge functionality, distinguishing it from the 'H' variant which maintains a high-ohmic state when disabled.
Replacement Considerations
Consult official NXP documentation for verified substitute part numbers. Cross-reference electrical parameters such as output voltage accuracy, dropout voltage, and package dimensions to ensure compatibility.
