AP7343D-13W5-7

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The AP7343D-13W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 1.3V output with a guaranteed maximum load current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features a typical ripple rejection ratio of 75dB at 1kHz. The device incorporates an integrated enable pin for power management control and includes built-in output discharge functionality. Packaged in the compact SOT-25-5 surface-mount format, it supports an operating ambient temperature range from -40°C to +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated CMOS architecture ensures high output voltage accuracy and low quiescent current consumption.
• Built-in output discharge mechanism actively pulls down the output voltage when the device is disabled.
• Includes comprehensive protection circuits such as thermal shutdown and fold-back short-circuit current limiting.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• RF supply circuits
• Portable video devices
• Wireless communication modules

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify that the specific part number suffix 'D' corresponds to the required output discharge feature, as non-discharge variants exist within the same family. Confirm the package type matches the design footprint requirements. Ensure environmental compliance documentation aligns with project specifications before finalizing procurement orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 1.3V rail is required with minimal external component count. The SOT-25 package offers a small footprint suitable for dense PCB layouts. Consider the internal discharge feature if rapid output voltage decay is necessary upon shutdown. Verify input voltage headroom against the dropout characteristics at the expected load current.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the AP7343 series of high PSRR low-noise LDO regulators. The 'D' suffix indicates the inclusion of an auto-discharge resistor on the output pin, distinguishing it from standard versions. The 'W5' suffix denotes the SOT-25-5 package configuration used for surface mount assembly.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

AP7343-13W5-7 (Non-discharge variant)

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the function of the 'D' suffix in the part number?

The 'D' suffix indicates that the regulator includes an integrated N-channel auto-discharge resistor on the output pin to pull the voltage low when disabled.

How does the enable pin operate?

Driving the EN pin high enables the regulator, while pulling it low disables the device and activates the output discharge circuit.