The TCR3DM 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 TCR3DM series are offered in the ultra small plastic mold

package DFN4 (1.0 mm x 1.0 mm; t 0.58 mm). It has a low dropout

voltage of 210 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 ΔVOUT = ±80 mV ( IOUT = 1 mA⇔300 mA, COUT

=1.0 μF).

As small ceramic input and output capacitors can be used with the

TCR3DM series, these devices are ideal for portable applications that require high-density board assembly such as

cellular phones.

Features

• Low Drop-Out voltage

VIN-VOUT = 210 mV (typ.) at 2.5 V-output, IOUT = 300 mA

VIN-VOUT = 270 mV (typ.) at 1.8 V-output, IOUT = 300 mA

VIN-VOUT = 490 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 (ΔVOUT = ±80 mV (typ.) at IOUT = 1 mA⇔ 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 )

• Ultra small package DFN4 (1.0 mm x 1.0 mm ; t 0.58 mm )