1. Description

The TCR3UG series are CMOS general-purpose single-output voltage

regulators with an on/off control input, featuring ultra low quiescent bias

current and low dropout voltage.

These voltage regulators are available in fixed output voltages between 0.8

V and 5.0 V and capable of driving up to 300 mA. They feature Over-current

protection, Thermal Shutdown function and Auto-discharge option.

The TCR3UG series is offered in the ultra small plastic mold package

WCSP4F (0.645 mm x 0.645 mm (typ.); t 0.33 mm (max)) and has a low

dropout voltage of 155 mV (3.3 V output, IOUT = 300 mA). As small ceramic

input and output capacitors 1 μF can be used with the TCR3UG series, these

devices are ideal for portable applications that require high-density board

assembly

such as cellular phones, IoT equipment and wearable devices.

2. Applications

Power IC developed for portable applications, IoT equipment and wearable devices

3. Features

• Ultra small package WCSP4F (0.645 mm x 0.645 mm (typ.); t 0.33 mm (max)).

• Low quiescent bias current (IB(ON) = 0.34 μA (typ.) at IOUT = 0 mA, output voltage up to 1.5 V)

• High ripple rejection ratio 70 dB at 0.8 V-output

• Fast load transient response ± 60 mV at 0.8 V-output, IOUT = 1 mA ⇔ 50 mA

• Low dropout voltage

VDO =VIN-VOUT = 140 mV (typ.) at 3.3 V-output, IOUT = 300 mA

• Wide range output voltage line up (VOUT = 0.8 to 5.0 V)

• High VOUT accuracy ± 1.0 (1.8 V ≤ VOUT)

• Auto-discharge (TCR3UGxxA series)/ Non-discharge (TCR3UGxxB series) line up

• Overcurrent protection

• Thermal shutdown function

• Inrush current protection circuit

• Pull down connection between CONTROL and GND

• Ceramic capacitors can be used (CIN = 1 μF, COUT = 1 μF)