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Product Detailed Parameters
- Description：IC REG LINEAR 1.85V 150MA SOT-25
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.25V
- Voltage - Output (Min/Fixed)：1.85V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.44V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：100 µA
- PSRR：75dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-25
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Overview
The AP7315D-185W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a stable 1.85 V output with a maximum current of 150 mA. The device operates within an input voltage range of 1.7 V to 5.25 V and features a typical ripple rejection ratio of 75 dB at 1 kHz. Quiescent current is specified as low as 35 µA, with standby current reaching 0.01 µA when disabled. The component includes an integrated enable pin and built-in auto-discharge functionality for rapid output voltage decay upon shutdown.
Feature Summary
- Integrated enable control pin allows precise power management and system-level shutdown capabilities
- Built-in auto-discharge mechanism rapidly removes residual charge from the output capacitor when disabled
- CMOS process architecture ensures high output voltage accuracy and low quiescent current consumption
Applications
- Smartphones and tablet devices
- RF supply circuits
- Portable video players
- Wireless communication adapters
Procurement Notes
Verify that the specific suffix W5 corresponds to the SOT25 package configuration required for your PCB layout. Confirm the D designation indicates the inclusion of the internal discharge feature, which differs from standard non-discharge variants. Ensure the ordering code matches the exact 1.85 V fixed output requirement for your design specifications.
Selection Notes
Select this variant when a fixed 1.85 V rail is necessary alongside strict space constraints provided by the SOT25 footprint. The integrated discharge function makes it suitable for applications requiring fast output voltage decay during sleep modes. Verify that the 150 mA load capability aligns with peak current demands while maintaining stability with appropriate ceramic capacitors.
Part Context
This component belongs to the AP7315 series of low dropout regulators designed for portable electronics. The series utilizes CMOS technology to achieve high performance in small packages including SOT23, SOT25, and X2-DFN1010-4. The AP7315D-185W5-7 specifically represents the fixed 1.85 V output version packaged in SOT25 with active discharge circuitry.
Replacement Considerations
AP7315-185W5-7 (Non-discharge variant)
FAQ
What is the function of the 'D' suffix in the part number?
The 'D' suffix indicates that the regulator includes an internal auto-discharge resistor connected between the output and ground, ensuring the output voltage decays rapidly when the enable pin is pulled low.
How does the enable pin operate?
The enable pin turns the regulator on when driven high and shuts it down when pulled low. If unused, it should be tied to the VIN pin to keep the regulator permanently enabled.
