TCR2EN34,LF(SE

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

The TCR2EN34,LF is a CMOS low-dropout regulator from the Toshiba TCR2EN series. It provides a fixed output voltage of 3.4 V with a maximum output current of 200 mA. The device operates within an input voltage range of 1.5 V to 5.5 V and features an on/off control input. Key electrical characteristics include a typical dropout voltage of 130 mV at 150 mA, a quiescent bias current of 35 µA, and high ripple rejection of 73 dB at 1 kHz. It incorporates overcurrent protection and an auto-discharge function.

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

• Features an ultra-small SDFN4 or SDFN4E package measuring 0.8 mm x 0.8 mm for high-density board assembly.
• Includes an integrated overcurrent protection circuit to safeguard against excessive load conditions.
• Equipped with an auto-discharge function that rapidly discharges output capacitors when the device is turned off.
• Supports the use of small ceramic input and output capacitors for stable operation.

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

• Portable cellular phones requiring compact power management solutions
• High-density board assembly applications in consumer electronics
• Battery-powered devices utilizing low-quiescent current regulators

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

Verify the specific ordering suffix (e.g., LF, SE) to confirm compliance with environmental standards such as RoHS and lead-free requirements. Confirm the exact package variant (SDFN4 vs. SDFN4E) matches your PCB footprint design. Ensure the selected component meets all absolute maximum ratings for your target operating temperature and voltage conditions.

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

Select this component for applications requiring a fixed 3.4 V output with up to 200 mA load capability. Consider the low dropout voltage and fast transient response for efficient battery-powered systems. Verify that the required thermal dissipation can be managed within the specified 300 mW power rating using appropriate PCB copper area.

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

This part belongs to the TCR2EN series of general-purpose single-output voltage regulators. The series offers fixed output voltages ranging from 1.0 V to 3.6 V. All members share common features including low noise, high ripple rejection, and the ultra-small plastic mold package designed for portable electronic applications.

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

Other TCR2EN series variants (e.g., TCR2EN33, TCR2EN35) offer different fixed output voltages but share identical pinouts and package dimensions. Substitution requires verifying that the alternative output voltage meets the system requirements without modifying the surrounding circuitry.