RP111x-Y Series Good Transient Response Low Voltage 500 mA LDO for High Temperature Applications* NO.EA-375-200904 OUTLINE The RP111x is a CMOS-based LDO regulator featuring 500 mA output current. The input voltage is as low as 1.4 V and the output voltage can be set from 0.7 V. Due to a built-in 0.46 (at V = 2.8 V) on-resistor, RP111x OUT can provide a low dropout voltage. RP111x also features an excellent line transient response, ripple rejection at 75 dB, and low noise. The output voltage accuracy is as high as 0.8% and the temperature drift coefficient of output voltage is low at 30 ppm/C. The accuracy of the output voltage of RP111x includes the temperature characteristics and the load transient response has been improved. The typ. and max value of under/overshoot for various output current are shown in the typical characteristics, therefore the accuracy of the output voltage estimation will be easy on the actual operating cases. In addition to a fold-back protection circuit built into conventional regulators, RP111x contains a thermal shutdown circuit and an inrush current limit circuit. SOT-23-5, SOT-89-5, and DFN1212-6 packages are available. * This product is a high-reliability semiconductor device that is designed for the use in high-temperature environment. This product has successfully passed our rigorous reliability test in addition to the high- temperature test. To distinguish this product from our consumer products,-Y is added to the end of the name of the product. FEATURES Input Voltage Range (Maximum Rating) 1.4 V to 5.25 V (6.0 V) Operating Temperature 40C to 105C Supply Current Typ. 80 A Standby Current Typ. 0.1 A Dropout Voltage Typ. 0.23 V (IOUT = 500 mA VSET = 2.5 V) Ripple Rejection Typ. 75 dB (f = 1 kHz) Typ. 70 dB (f = 10 kHz) Output Voltage Accuracy 0.8% (VSET 1.8 V) Output Voltage Temperature Coefficient Typ. 30 ppm/C (VSET 1.8 V) Line Regulation Typ. 0.02%/V Input Transient Response Typ. 1.5 mV (VIN: VSET + 0.5 VVSET + 1.5 V (tr = tf = 5.0 s), VIN 1.4 V, IOUT = 30 mA) Packages DFN1212-6, SOT-23-5, SOT-89-5 Output Voltage Range 0.7 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 2.7 V, 2.8 V, 3.0 V, 3.3 V, 3.4 V Contact Ricoh sales representatives for other voltages. Built-in Fold-back Protection Circuit Typ. 50 mA Thermal Shutdown Temperature 165C Inrush Current Limit Typ. 400 mA (for 180 s after start-up) Ceramic capacitors are recommended to be used with this IC 1.0 F or more Output Noise 20 x VSET Vrms (BW = 10 Hz to 100 kHz, VSET 1.8 V) APPLICATIONS Industrial equipments such as FAs and smart meters Equipments used under high-temperature conditions Equipments accompanied by self-heating 1 RP111x-Y NO.EA-375-200904 BLOCK DIAGRAMS RP111xxx1B RP111xxx1D VDD VOUT VDD VOUT VFB VFB Vref Vref Current Limit Current Limit Thermal Shutdown Thermal Shutdown CE CE GND GND SELECTION GUIDE *1 The set output voltage, auto-discharge function, , and package type for the IC are user-selectable. Product Name Package Quantity per Reel Pb Free Halogen Free RP111Lxx1-TR-Y DFN1212-6 5,000 pcs Yes Yes RP111Nxx1-TR-YE SOT-23-5 3,000 pcs Yes Yes RP111Hxx1-T1-YE SOT-89-5 1,000 pcs Yes Yes xx: Specify the set output voltage (VSET) 0.7 V (07), 1.2 V (12), 1.5 V (15), 1.8 V (18), 2.5 V (25), 2.7 V (27), 2.8 V (28), 3.0 V (30), 3.3 V (33), 3.4 V (34) Contact Ricoh sales representatives for other voltages. : Specify the auto-discharge function at off state (B) Active-high, without auto discharge function at off state (D) Active-high, with auto discharge function at off state *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