Low Input Voltage 3A LDO Regulator for Automotive Applications
The RP108J is a voltage regulator IC featuring 3A output with low ON-resistance developed with CMOS process technology.
This device 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 device 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 can switch the regulator to standby mode. In addition to a fold-back protection circuit, which is already built in the conventional regulators, this device contains a thermal shutdown circuit, a constant slope circuit as a soft-start function and a reverse current protection circuit. Ceramic capacitors can be used.
|Input Voltage Range (Maximum Rating)||1.6V to 5.25V (6.0V)|
|Operating Temperature||−40°C to 105°C|
|Output Current||Min. 3A|
|Supply Current||Typ. 350µA|
|Standby Current||Typ. 2µA|
|Output Voltage Range||0.8V/1.2V/1.5V/1.8V/2.5V/3.0V/3.3V
*Contact Ricoh sales representatives for other voltages.
RP108J081x: 0.8V to 4.2V
|Output Voltage Accuracy||±1.0% (Ta = 25°C)
(±15mV accuracy, when VOUT ≤ 1.5V)
|Output Voltage Temperature-drift Coefficient||Typ. ±100ppm/°C|
|Ripple Rejection||Typ. 65dB (f =1kHz, VOUT=2.5V)|
|Dropout Voltage||Typ. 0.51V (VOUT=2.5V)|
|Line Regulation||Typ. 0.1%/V|
|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||10µF or more|
- ・Power source for car accessories including car audio equipment, car navigation system, and ETC system.
|Data Sheet||Package||Quality Assurance Data||Suffix||Composition & Content*1|
|TO-252-5-P2||-AE||Sn (Sn: 100%)|
- *1The composition of the product cannot be specified.