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 2.5V 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)：2.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.35V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：40 µA
- Current - Supply (Max)：100 µA
- 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：-
Download product information
Overview
The LD39020DTPU25R is a fixed-output linear regulator IC manufactured by STMicroelectronics. It provides a nominal output voltage of 2.5 V with a guaranteed maximum output current of 200 mA. The device 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. Electrical characteristics include a quiescent current of 40 µA maximum, standby current of 1 µA maximum, and supply voltage rejection of 80 dB at 1 kHz. It utilizes a DFN4 1x1 package and supports an operating junction temperature range from -40 °C to 125 °C.
Feature Summary
- Logic-controlled electronic shutdown function for power management
- Internal soft-start circuit to control inrush current during startup
- Integrated MOSFET for rapid output capacitor discharge upon disable
- Built-in constant current limiting and thermal protection mechanisms
Applications
- Mobile phones
- Tablets
- Digital still cameras (DSC)
- Cordless phones and similar battery-powered systems
- Portable media players
Procurement Notes
Verify the specific suffix 'DT' confirms the inclusion of the auto-discharge feature, as standard versions lack this function. Confirm the package type matches the design footprint requirements. Ensure the output voltage tolerance aligns with system accuracy needs, noting that the 'D' variant specifies ±2.0% accuracy compared to the higher precision 'A' version.
Selection Notes
Select this component when a compact solution with low quiescent current is required for battery-operated devices. The DFN4 1x1 package offers significant space savings compared to larger alternatives. Consider the internal discharge feature if rapid output voltage decay is necessary during shutdown states. Evaluate thermal performance based on the specified junction-to-ambient resistance values for the chosen package.
Part Context
This part belongs to the LD39020 family of high-accuracy voltage regulators designed for ultra-low power applications. The series includes various output voltages and packages, such as SOT23-5L. The 'D' designation indicates the presence of the output discharge MOSFET, distinguishing it from the standard 'T' version which lacks this feature but shares identical electrical regulation parameters.
Replacement Considerations
LD39020ADTPU25R: Offers tighter output voltage tolerance (±0.5%) while maintaining the same discharge feature and package.
FAQ
What is the function of the 'DT' suffix in the part number?
The 'DT' suffix indicates that the device includes an integrated MOSFET for automatic output voltage discharge when the enable pin is driven low.
How does the LD39020DTPU25R handle startup transients?
It incorporates an internal soft-start circuit that increases the turn-on time to approximately 100 µs, controlling inrush current without external components.
