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Product Detailed Parameters
- Description：IC REG LIN 3.3V/3.3V U-DFN20186
- 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)：3.3V, 3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.2V @ 150mA, 0.2V @ 150mA
- Current - Output：150mA, 150mA
- Current - Quiescent (Iq)：80 µA
- Current - Supply (Max)：-
- PSRR：65dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：6-UFDFN Exposed Pad
- Supplier Device Package：U-DFN2018-6
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Overview
The AP7312-3333FM-7 is a dual fixed output voltage low dropout linear regulator manufactured by Diodes Incorporated. It provides two independent 3.3V outputs with a maximum current of 150mA per channel. The device operates within an input voltage range of 2V to 6V and features a typical quiescent current of 60µA. It includes integrated current limit, short circuit, and thermal shutdown protections. The component is housed in a DFN2018-6 package.
Feature Summary
- Dual channels with independent enable pins for individual control
- Integrated protection against overcurrent, short circuits, and overheating
- Fast transient response suitable for rapidly changing load conditions
- Operates stably with low ESR ceramic capacitors
Applications
- Cellular phones
- Smart phones and PDAs
- MP3/MP4 players
- Bluetooth headsets
- Low power applications
Procurement Notes
Verify the specific ordering suffix FM-7 confirms the DFN2018-6 package type and tape & reel packaging configuration. Ensure compatibility with the required PCB footprint layout as specified in the manufacturer's pad design guidelines. Confirm RoHS compliance status matches project requirements before finalizing procurement orders.
Selection Notes
Select this component when dual 3.3V rails are required from a single supply source. The low quiescent current makes it suitable for battery-powered portable devices. Verify that the input voltage remains within the 2V to 6V operating range and that the load does not exceed the 150mA per channel limit under all operating conditions.
Part Context
This part belongs to the AP7312 family of dual 150mA low dropout regulators. The '3333' designation indicates both channels provide a fixed 3.3V output. The 'FM' suffix specifies the DFN2018-6 package variant, while '-7' denotes tape and reel packaging. This series is designed for space-constrained mobile electronics.
Replacement Considerations
The datasheet explicitly states the AP7312 is not recommended for new designs and recommends using the AP7345D instead. No other direct substitute part numbers are documented in the provided materials.
FAQ
What is the minimum capacitance required for stable operation?
The device requires at least 1µF ceramic capacitors on both the input and output pins to ensure stability and proper transient response.
How are the two regulator channels controlled?
Each channel has a dedicated enable pin (EN1 and EN2). Setting the respective pin high turns the channel on, while pulling it low turns it off.
