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Product Detailed Parameters
- Description：IC REG LIN 1.4V 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)：1.4V
- 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/14P,115 is a fixed positive Low DropOut regulator providing a nominal output voltage of 1.4 V. It operates within an input voltage range of 2.3 V to 5.5 V and supports a maximum output current of 150 mA. The device features a dropout voltage of 250 mV at full load and delivers a typical Power Supply Rejection Ratio of 75 dB at 1 kHz. It incorporates an auto discharge function for low-ohmic output states in disabled mode, with a quiescent current as low as 0.1 µA in shutdown.
Feature Summary
- Integrated pull-down switching transistor provides a low-ohmic output state when disabled
- High power supply rejection ratio ensures effective suppression of input noise and ripples
- Ultra-small DFN plastic package facilitates component miniaturization in portable designs
Applications
- Powering analog and digital interfaces requiring lower than standard supply voltages
- Mobile appliances such as smart phones, mobile phone handsets and cordless telephones
- Portable media players and personal navigation devices
Procurement Notes
Verify the specific ordering suffix against official NXP documentation to confirm the package variant and compliance status. Ensure the selected version matches the required output voltage tolerance and thermal characteristics for the target application environment.
Selection Notes
Select this component for applications requiring precise 1.4 V regulation with minimal footprint constraints. The auto discharge feature is suitable for systems needing rapid output capacitor discharge upon shutdown. Verify that the external load capacitance meets the minimum stability requirements specified in the datasheet.
Part Context
This part belongs to the LD6805 series of low-dropout regulators designed for ultra-high PSRR performance. The 'xxP' designation indicates the inclusion of an internal pull-down transistor for auto discharge functionality, distinguishing it from the high-ohmic 'xxH' variants within the same family.
Replacement Considerations
LD6805K/14H,115
FAQ
What is the behavior of the output pin when the enable signal is low?
The LD6805K/14P contains a pull-down switching transistor that provides a low-ohmic output state (auto discharge function) when the device is disabled.
Does this regulator require a minimum load capacitance for stability?
Yes, the device requires an external load capacitance of at least 0.7 µF to guarantee stable regulator behavior and correct operation.
