TOSHIBA CMOS Linear Integrated Circuit Silicon Monolithic

300 mA CMOS Low Drop-Out Regulator with inrush current protection circuit

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, I_OUT = 300 mA) with low output noise voltage of 38 μV_rms (2.5 V output) and a load transient response of only ⊿V_OUT = ±85

mV ( I_OUT = 1 mA⇔300 mA, C_OUT =1.0 μF).

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

Features

0 Low Drop-Out voltage

   V_IN-V_OUT = 230 mV (typ.) at 2.5 V-output, I_OUT = 300 mA

   V_IN-V_OUT = 290 mV (typ.) at 1.8 V-output, I_OUT = 300 mA

   V_IN-V_OUT = 510 mV (typ.) at 1.2 V-output, I_OUT = 300 mA

0 Low output noise voltage

   V_NO = 38 μV_rms (typ.) at 2.5 V-output, I_OUT = 10 mA, 10 Hz f 100 kHz

0 Fast load transient response (⊿V_OUT = ±85 mV (typ.) at I_OUT = 1 ⇔ 300 mA, C_OUT =1.0 μF )

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

0 Over-current protection

0 Over-temperature protection

0 Inrush current protection circuit

0 Auto-discharge function

0 Pull down connection between CONTROL and GND

0 Ceramic capacitors can be used ( C_IN = 1.0μF, C_OUT =1.0 μF )

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