RP115x Series Low On Resistance/ Low Voltage 1 Ch 500 mA/ 1.0 A Alternative LDO NO. EA-274-190521 OUTLINE The RP115x is a CMOS-based positive voltage regulator featuring 500 mA/ 1.0 A that provides high ripple rejection, low dropout voltage, high output voltage accuracy, and low supply current. Internally, it consists of a voltage reference unit, an error amplifier, a resistor-net for output voltage setting, a current limit circuit, a thermal shutdown circuit, and a reverse current protection circuit. The RP115x uses a CMOS process for achieving low supply current, low On Resistance for low dropout voltage (Typ. 0.195 V (DFN1216-8, IOUT = 1.0 A, VSET = 1.2 V)) and CE function for long battery life. Excellent ripple rejection, input transient response, and load transient response make the RP115x ideal for the power sources of mobile communication equipment. The RP115x is available in the DFN1216-8 package for space saving and the SOT-89-5 (Output Current: 1.0 A fixed) package for higher power applications. The RP115L (DFN1216-8) can choose the output current limit between 1.0 A or 500 mA by alternating the LCON pin between H or L. The RP115H (SOT-89-5) can output only 1.0 A since it does not include the LCON pin. FEATURES Supply Current Typ. 110 A Supply Current (Standby Mode) Typ. 0.5 A Dropout Voltage Typ. 0.195 V (DFN1216-8: IOUT = 1.0 A, VSET = 1.2 V) Typ. 0.235 V (SOT-89-5: IOUT = 1.0 A, VSET = 1.2 V) Ripple Rejection Typ. 80 dB (f = 1 kHz, VSET 1.8 V) Typ. 75 dB (f = 1 kHz, VSET > 1.8 V) Output Voltage Accuracy 1.0% (VSET 1.75 V) Output Voltage Temperature Coefficient Typ. 30 ppm/ C (VSET 1.75 V) Line Regulation Typ. 0.02%/V Package DFN1216-8, SOT-89-5 (1) Output Voltage Range 0.7 V to 4.3 V with a 0.1-V step Built-in Short Current Limit Circuit Typ. 60 mA (DFN1216-8: LCON =) Built-in Peak Current Limit Built-in Thermal Shutdown Circuit Thermal Shutdown Temperature: 165C Built-in Constant Slope Circuit for Start-up Built-in Inrush Current Suppression Circuit Typ. 300 mA (DFN1216-8: LCON =) Reverse Current Protection Recommended Ceramic Capacitors 1.0 F or more (1) For the output voltage with a 0.05-V step, refer to SELECTION GUIDE. 1 RP115x NO. EA-274-190521 APPLICATIONS Portable Communication Equipment Electrical Appliances such as Cameras, VCRs and Camcorders Battery-powered Equipment Home Appliances, Printers, Scanners, Office Equipment Machines SELECTION GUIDE (1) The package type, the set output voltage and the auto-discharge are user-selectable options. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free RP115Lxx1 -E2 DFN1216-8 5,000 pcs Yes Yes RP115Hxx1 -T1-FE SOT-89-5 1,000 pcs Yes Yes xx: Specify the set output voltage (V ) within the range of 0.7 V to 4.3 V with a 0.1 V step. SET Specify V with a 0.05 V step as follows: SET 0.75 V: RP115x071 5 1.15 V: RP115x111 5 1.25 V: RP115x121 5 1.35 V: RP115x131 5 1.75 V: RP115x171 5 1.85 V: RP115x181 5 2.15 V: RP115x211 5 2.75 V: RP115x271 5 2.85 V: RP115x281 5 2.95 V: RP115x291 5 : Specify the CE pin polarity and the auto-discharge. B: CE = Active-high, auto-discharge not included D: CE = Active-high, auto-discharge included (1) Auto-discharge function quickly lowers the output voltage to 0 V by releasing the electrical charge in the external capacitor when the chip enable signal is switched from the active mode to the standby mode. 2