LP38858
www.ti.com SNVS462D – OCTOBER 2006 – REVISED APRIL 2013 1.5A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start
Check for Samples: LP38858 FEATURES DESCRIPTION The LP38858 is a high current, fast response
regulator which can maintain output voltage
regulation with extremely low input to output voltage
drop. Fabricated on a CMOS process, the device
operates from two input voltages: VBIAS provides
voltage to drive the gate of the N-MOS power
transistor, while VIN is the input voltage which
supplies power to the load. The use of an external
bias rail allows the part to operate from ultra low VIN
voltages. Unlike bipolar regulators, the CMOS
architecture consumes extremely low quiescent
current at any output load current. The use of an NMOS power transistor results in wide bandwidth, yet
minimum external capacitance is required to maintain
loop stability. 1 2 Standard VOUT Values of 0.8V and 1.2V
Wide VBIAS Supply Operating Range of 3.0V to
5.5V
Stable with 10ВµF Ceramic Capacitors
Dropout Voltage of 130 mV (Typical) at 1.5A
Load Current
Precision Output Voltage across All Line and
Load Conditions: …
