RP108J Datasheet, PDF (1/28 Pages) RICOH electronics devices division – Output Current Min. 3A

RP108J Series
Low Input Voltage 3A LDO Regulator
NO.EA-203-150817
OUTLINE
The RP108J is a CMOS-based voltage regulator IC featuring 3A output with low ON-resistance.
The RP108J consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a fold-back
protection circuit, and a thermal shutdown circuit. The RP108J 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, The RP108J 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.
FEATURES
• Output Current ............................................................. Min. 3A
• Supply Current ............................................................. Typ. 350µA
• Standby Current ........................................................... Typ. 2µA
• Input Voltage Range .................................................... 1.6V to 5.25V
• Output Voltage Range.................................................. Fixed Output Voltage Type: 0.8V to 4.2V (0.1V steps)
* Refer to MARK INFORMATIONS for other voltages.
Adjustable Output Voltage Type: 0.8V to 4.2V
• Output Voltage Accuracy.............................................. ±1.0% (±15mV accuracy, When VSET ≤ 1.5V)
• Output Voltage Temperature-drift Coefficient ........... Typ. ±100ppm/°C
• Ripple Rejection ........................................................... Typ. 65dB (f = 1kHz, VSET = 2.8V)
• Dropout Voltage ........................................................... Typ. 0.51V (VSET=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 ···· 10µF or more
APPLICATIONS
• Power source for battery-powered equipments.
• Power source for portable communication equipments such as cameras and VCRs.
• Power source for electrical home appliances.
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