TC1301A-PGAVMF

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

The TC1301A-PGAVMF is a dual-output Low Dropout (LDO) regulator with an integrated microcontroller reset monitor, housed in an 8-pin DFN package. It features a 300 mA output (VOUT1) and a 150 mA output (VOUT2), both supporting fixed voltages from 1.5V to 3.3V. The device includes a voltage detector with thresholds between 2.20V and 3.20V. Key electrical characteristics include a typical dropout voltage of 104 mV at 300 mA for VOUT1 and 150 mV at 150 mA for VOUT2. Supply current is typically 116 µA when both outputs are active. The component operates within a junction temperature range of -40°C to +125°C.

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

• Integrates two LDO regulators and a microcontroller reset function in a single compact package
• Provides independent shutdown control for both output channels via dedicated SHDN pins
• Features a reference bypass input to reduce output noise and improve power supply rejection ratio
• Includes overcurrent and overtemperature protection for robust fault handling

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

• Cellular and GSM/PHS mobile phones
• Battery-operated portable systems
• Hand-held medical instruments
• Portable computers and PDAs
• Linear post-regulators for switch-mode power supplies

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

Verify the specific suffix PGAVMF against the manufacturer's official ordering guide to confirm the exact output voltage codes for VOUT1, VOUT2, and the RESET threshold. Ensure the package type matches the required PCB footprint, as this part number specifies the DFN variant. Cross-reference the revision level in the datasheet to confirm pinout compatibility if replacing older versions.

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

Select the TC1301A variant if VOUT1 must remain active whenever VIN is present, as it lacks a shutdown pin for that channel. Choose the TC1301B variant if independent shutdown control is required for both VOUT1 and VOUT2. Ensure the application requires ceramic capacitors of at least 1 µF for stability. Verify that the load currents do not exceed 300 mA for VOUT1 or 150 mA for VOUT2 under all operating conditions.

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

This component belongs to Microchip's TC1301 family of micropower LDOs. It combines power regulation with system management functions to reduce board space. The device is designed for battery-powered applications where low quiescent current and small form factor are critical. It serves as a complete power solution for microcontrollers and peripheral circuits in portable electronics.

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

Check for pin-compatible upgrades such as the TC1301B variants if independent shutdown for VOUT1 is needed. Verify that any substitute maintains the same 8-pin DFN package dimensions and thermal characteristics. Ensure the replacement supports the required output voltage combinations and meets the 1 µF minimum ceramic capacitor stability requirement.

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

What is the difference between the TC1301A and TC1301B regarding shutdown functionality?

In the TC1301A, VOUT1 is always on when VIN is present and cannot be shut down; only VOUT2 has a shutdown pin (SHDN2). In the TC1301B, both VOUT1 and VOUT2 have independent shutdown pins (SHDN1 and SHDN2).

How does the RESET function differ between the TC1301A and TC1301B?

For the TC1301A, the RESET function monitors the external VDET pin independently of the regulator outputs. For the TC1301B, the RESET function is internally connected to monitor the VOUT1 output voltage.

What type of output capacitors are recommended for stability?

The device is stable with a minimum of 1 µF ceramic output capacitors (X5R or X7R) on each output. Electrolytic capacitors with ESR between 0 and 2 ohms are also supported.