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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V/1.8V 8-DFN
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：2
- Voltage - Input (Max)：6V
- Voltage - Output (Min/Fixed)：2.5V, 1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.08V @ 100mA, 0.12V @ 100mA
- Current - Output：300mA, 300mA
- Current - Quiescent (Iq)：90 µA
- Current - Supply (Max)：-
- PSRR：70dB (1kHz)
- Control Features：Enable, Shutdown
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-20°C ~ 60°C
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x2)
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Overview
The AP2402A21DNTR-E1 is a dual positive low-dropout (LDO) voltage regulator manufactured by Diodes Incorporated using CMOS process technology. It provides two independent fixed output voltages: Channel 1 outputs 2.5V and Channel 2 outputs 1.8V. The device supports a minimum output current capability of 300mA per channel with high output voltage accuracy of ±2%. Key electrical parameters include a typical quiescent current of 50µA per channel, standby current of 0.1µA, power supply ripple rejection (PSRR) of 70dB at 1kHz, and extremely low noise of 30µVrms over the 10Hz to 100kHz bandwidth. It operates within an ambient temperature range of -40°C to +85°C and is housed in a DFN-2x2-8 package.
Feature Summary
- Dual-channel architecture with independent chip-enable functions for individual channel control and quick discharge capabilities.
- High power supply ripple rejection and extremely low output noise suitable for sensitive analog circuits.
- Integrated current limit protection on each channel to ensure safe operation under overload conditions.
- Compatible with low ESR ceramic capacitors, simplifying external component selection.
Applications
- Mobile phones
- Wireless communication equipment
- Portable games
- Cameras and video recorders
Procurement Notes
Verify the specific suffix DNTR against the manufacturer's official datasheet to confirm the DFN-2x2-8 package type and tape-and-reel shipping configuration. Ensure the A21 designation matches the required 2.5V/1.8V output combination. Confirm RoHS compliance status and check for any product change notifications or end-of-life notices prior to finalizing procurement plans.
Selection Notes
Select this component when a compact dual-rail power solution is required for battery-powered portable devices. The low quiescent current and standby modes make it suitable for extending battery life. Verify that the load requirements do not exceed the 300mA per channel limit and that the input voltage remains within the operational range defined in the datasheet. Ensure the PCB layout supports the thermal performance of the small DFN package.
Part Context
This part belongs to the AP2402 series of dual LDO regulators from Diodes Incorporated. The series includes variants with different output voltage combinations such as 2.5V/1.8V, 2.8V/1.8V, and 2.8V/2.8V. These regulators are designed for applications requiring multiple stable voltage rails from a single source, commonly found in consumer electronics and telecommunications sub-board power supplies.
Replacement Considerations
Check for other AP2402 variants with matching output voltages if package availability differs. Cross-reference with other dual LDOs offering similar 300mA per channel current and low noise specifications, ensuring pin compatibility and thermal characteristics align with the existing design.
