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 μA
• Supply Current (Standby Mode) ···················· Typ. 0.5 μA
• 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/ ºC (VSET ≥ 1.75 V)
• Line Regulation·········································· Typ. 0.02%/V
• Package···················································DFN1216-8, SOT-89-5
• Output Voltage Range ································· 0.7 V to 4.3 V with a 0.1-V step(1)
• Built-in Short Current Limit Circuit ·················· Typ. 60 mA (DFN1216-8: LCON = "L")
• Built-in Peak Current Limit
• Built-in Thermal Shutdown Circuit ··················Thermal Shutdown Temperature: 165ºC
• Built-in Constant Slope Circuit for Start-up
• Built-in Inrush Current Suppression Circuit······· Typ. 300 mA (DFN1216-8: LCON = "L")
• Reverse Current Protection
• Recommended Ceramic Capacitors ···············1.0 µF or more
APPLICATIONS
• Portable Communication Equipment
• Electrical Appliances such as Cameras, VCRs and Camcorders
• Battery-powered Equipment
• Home Appliances, Printers, Scanners, Office Equipment Machines
(Picture:Pinout / Diagram)
