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Product Detailed Parameters
- Description：IC REG LINEAR 1.5V 200MA 4-DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.35V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：40 µA
- Current - Supply (Max)：-
- PSRR：80dB ~ 55dB (1kHz ~ 100kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：4-XDFN Exposed Pad
- Supplier Device Package：4-DFN (1x1)
- Grade：-
- Qualification：-
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Overview
The LD39020DTPU15R is a fixed-output linear regulator IC from STMicroelectronics, providing a nominal output voltage of 1.5 V with a guaranteed maximum current of 200 mA. It operates within an input voltage range of 1.5 V to 5.5 V and features a typical dropout voltage of 200 mV at full load. The device incorporates an internal soft-start circuit and logic-controlled electronic shutdown, reducing standby current to below 0.1 µA. It utilizes a DFN4 1x1 package and includes integrated thermal and short-circuit protection mechanisms.
Feature Summary
- Ultra-low dropout voltage operation for efficient power management in battery-powered systems
- Logic-controlled enable pin allows for deep shutdown mode with minimal standby current consumption
- Integrated soft-start function limits inrush current during startup without external components
- Built-in output discharge MOSFET rapidly discharges the output capacitor when disabled
Applications
- Mobile phones
- Tablets
- Digital still cameras (DSC)
- Cordless phones and similar battery-powered systems
- Portable media players
Procurement Notes
Verify that the specific part number matches the required output voltage and tolerance specifications. Confirm the package type corresponds to the design footprint requirements. Ensure compatibility with the intended operating temperature range and environmental standards before finalizing procurement decisions.
Selection Notes
Select this component for applications requiring high accuracy and low quiescent current in space-constrained designs. The DFN4 1x1 package offers significant size reduction compared to traditional packages. Consider the auto-discharge feature if rapid output voltage decay is necessary upon shutdown.
Part Context
This component belongs to the LD39020 family of very low quiescent current linear regulators. The series provides various fixed output voltages ranging from 0.8 V to 5.0 V. The 'DT' suffix indicates the inclusion of the output discharge feature, while the 'PU' denotes the DFN4 1x1 package configuration used in this specific variant.
Replacement Considerations
Compatible substitutes include other variants within the LD39020 family such as LD39020DTPU18R or LD39020DTPU25R, provided the output voltage requirement differs. Cross-referencing pinouts and electrical characteristics is essential when considering alternative manufacturers.
