The TCR3DF series are CMOS general-purpose single-output voltage regulators with an on/off control input, featuring low dropout voltage, low output noise voltage and low inrush current.

These voltage regulators are available in fixed output voltages between 1.0 V and 4.5 V and capable of driving up to 300 mA.

They feature over-current protection, over-temperature protection, Inrush current protection circuit and Auto-discharge function.

The TCR3DF series has a low dropout voltage of 230 mV (2.5 V output, IOUT = 300 mA) with low output noise voltage of 38 μVrms (2.5 V output) and a load transient response of only ⊿VOUT = ±85 mV ( IOUT = 1 mA⇔300 mA, COUT =1.0 μF).

Thus, the TCR3DF series are suitable for sensitive power supply such as Analog and RF applications.

Features

• Low Drop-Out voltage

VIN-VOUT = 230 mV (typ.) at 2.5 V-output, IOUT = 300 mA

VIN-VOUT = 290 mV (typ.) at 1.8 V-output, IOUT = 300 mA

VIN-VOUT = 510 mV (typ.) at 1.2 V-output, IOUT = 300 mA

• Low output noise voltage

VNO = 38 μVrms (typ.) at 2.5 V-output, IOUT = 10 mA, 10 Hz < = f < = 100 kHz

• Fast load transient response (⊿VOUT = ±85 mV (typ.) at IOUT = 1 ⇔ 300 mA, COUT =1.0 μF )

• High ripple rejection ( R.R = 70 dB (typ.) at 2.5V-output, IOUT = 10 mA, f =1kHz )

• Over-current protection

• Over-temperature protection

• Inrush current protection circuit

• Auto-discharge function

• Pull down connection between CONTROL and GND

• Ceramic capacitors can be used ( CIN = 1.0μF, COUT =1.0 μF )

• General purpose package SMV(SOT-25) (SC-74A)