1. Description

The TCR5BM series are CMOS single-output voltage regulators with an on/off control input, featuring ultra low dropout voltage, high PSRR, low inrush current and fast load transient response.

A differentiating feature is the use of a secondary bias rail as a reference voltage that allows ultra low dropout of 100 mV (Typ.) at IOUT = 500 mA (1.1 V output, VBIAS = 3.3 V).

These voltage regulators are available in fixed output voltages between 0.8 V and 3.6 V, and capable of driving up to 500 mA. Other features include overcurrent protection, thermal shutdown, and Auto-discharge.

The TCR5BM series are offered in the ultra small plastic mold package DFN5B (1.2 mm x 1.2 mm; t 0.38 mm).

As small ceramic input and output capacitors can be used with the TCR5BM series, these devices are ideal for portable applications that require high-density board assembly such as cellular phones.

2. Application

Power IC developed for portable applications

3. Features

 Low dropout voltage

VDO = 100 mV (Typ.) at 1.1 V output, VBIAS = 3.3 V, IOUT = 500 mA

 Low stand-by current (IBIAS(OFF) = 1 μA (Max))

 Low quiescent bias current (IBIAS(ON) = 19 μA (Typ.) at VBIAS = 5.3 V, IOUT = 0 mA)

 Wide range output voltage line up VOUT = 0.8 to 3.6 V

 Overcurrent protection

 Thermal shutdown

 Inrush current reduction

 Under voltage lockout (TCR5BMxxA products)

 Auto-discharge

 Pull down connection between CONTROL and GND

 Ultra small package DFN5B (1.2 mm x 1.2 mm ; t 0.38 mm)