TC1302A-DTVUA

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

The TC1302A-DTVUA is a dual-output Low Dropout (LDO) regulator from Microchip Technology, housed in an 8-pin DFN package. It integrates two independent regulators: VOUT1 provides up to 300 mA with a typical dropout voltage of 104 mV, while VOUT2 supplies up to 150 mA with a typical dropout of 150 mV. The device operates within an input voltage range of 2.7 V to 6.0 V and features a typical quiescent current of 116 µA. Output voltages are fixed between 1.5 V and 3.3 V with a regulation accuracy of ±0.5%. It includes overcurrent and overtemperature protection.

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

• Dual LDO architecture providing separate 300 mA and 150 mA outputs
• Low dropout voltage performance for efficient power management
• Reference bypass pin for enhanced noise reduction and PSRR
• Integrated overcurrent limit and thermal shutdown protection

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

• Cellular/GSM/PHS phones
• Battery-operated systems
• Hand-held medical instruments
• Portable computers/PDAs
• Linear post-regulators for SMPS

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

Verify the specific output voltage combination required for the TC1302A-DTVUA variant against the manufacturer's ordering guide, as the base model supports multiple fixed voltage pairs. Confirm that the DFN-8 package meets the PCB footprint requirements. Ensure the application environment stays within the specified -40°C to +125°C operating junction temperature range to maintain reliability.

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

Select the TC1302A when only one output requires shutdown control, as VOUT1 remains active whenever VIN is present. This distinguishes it from the TC1302B, which offers independent shutdown for both outputs. Ensure minimum 1 µF ceramic capacitors are used on both outputs for stability. Consider the Bypass pin if low-noise operation is critical for sensitive analog loads.

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

The TC1302A/B series combines two CMOS LDOs into a single compact package to save board space. The TC1302A variant specifically fixes VOUT1 as always-on, simplifying designs where only the secondary rail needs power gating. It serves as a power management solution for portable electronics requiring stable, low-noise rails from a single input source.

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

Public confirmed substitute part numbers include TC1302B-IPVUATR and TC1302B-HPVUA. Note that these are TC1302B variants, which feature independent shutdown pins for both outputs, unlike the TC1302A. Verify if the additional SHDN1 pin functionality is acceptable or required for the replacement design.