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RP108J Series

Low Input Voltage 3A LDO Regulator

Data Sheet / Flyer

The RP108J Series are CMOS-based voltage regulator ICs featuring 3A output with low ON-resistance.

Each IC of this series consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a fold-back protection circuit, and a thermal shutdown circuit. This series features both low supply current and high output current, and the dropout voltage is much smaller than bi-polar's. The minimum input voltage is as low as 1.6V and the output voltage can be set from 0.8V, therefore it can be connected with the DC/DC converter as the latter power supply for high density LSI that is operated by low output voltage.

The output voltage of RP108J081x is externally adjustable by using external divide resistors. The CE pin of the RP108J Series can switch the regulator to standby mode. In addition to a fold-back protection circuit, which is already built in the conventional regulators, this series contain a thermal shutdown circuit, a constant slope circuit as a soft-start function and a reverse current protection circuit. Ceramic capacitors can be used.

Output Current	Min. 3A
Supply Current	Typ. 350µA
Standby Current	Typ. 2μA
Input Voltage Range	1.6V to 5.25V
Output Voltage Range	0.8V to 4.2V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.)
Output Voltage Accuracy	±1.0% (±15mV accuracy, When VOUT≤1.5V)
Output Voltage Temperature-drift Coefficient	Typ. ±100ppm/°C
Ripple Rejection	Typ. 65dB (f =1kHz / VOUT=2.8V)
Dropout Voltage	Typ. 0.51V (VOUT=2.8V)
Line Regulation	Typ. 0.1%/V
Package	TO-252-5-P2
Built-in Fold-back Protection Circuit	Typ. 220mA
Built-in Thermal Shutdown Circuit	Stops at 165°C
Built-in Constant Slope Circuit
Built-in Reverse Current Protection Circuit
Ceramic capacitors are recommended to be used with this IC	10.0µF or more