UNISONIC TECHNOLOGIES CO., LTD R1MX55 LINEAR INTEGRATED CIRCUIT VOLTAGE REGULATOR DESCRIPTION As the UTC linear intergrated LDO, the R1MX55 shows a high current, high accuracy, low-dropout voltage. The feature are: low dropout voltage, very low ground current. Cause the series have been designed for high current loads, so they are also used in lower current, extremely low dropout-critical systems (in which their tiny dropout voltage and ground current values are important attributes). FEATURES * Built-in ON/OFF function, * Over current protection function, * Over heat protection function * Adjustable DC output voltage * 30mA / 2.44V Output low dropout voltage regulator Lead-free: R1MX55L Halogen-free: R1MX55G ORDERING INFORMATION Normal R1MX55-AB5-R Ordering Number Lead Free R1MX55L-AB5-R Halogen Free R1MX55G-AB5-R Package Packing SOT-89-5 Tape Reel R1MX55L-AB5-R (1)Packing Type (1) R: Tape Reel (2)Package Type (2) AB5: SOT-89-5 (3)Lead Plating (3) G: Halogen Free, L: Lead Free, Blank: Pb/Sn www.unisonic.com.tw Copyright © 2008 Unisonic Technologies Co., Ltd 1 of 8 QW-R101-023.B R1MX55 LINEAR INTEGRATED CIRCUIT PIN DESCRIPTIONS PIN NO. PIN NAME 1 VADJ 2 GND 3 VC 4 VIN 5 VOUT FUNCTION Output voltage adjustment Ground ON/OFF control DC input DC output UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R101-023.B R1MX55 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM Block For Fixed Version VIN 4 VC 3 5 VOUT VREF VADJ OCP ON/OFF OTP 1 2 GND Block For Adjustable Version VIN 4 VC 3 5 VOUT VREF VADJ OCP ON/OFF OTP 1 2 GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R101-023.B R1MX55 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNITS Input Voltage (Note 2) VIN 9 V ON/OFF Control Voltage (Note 2) VC 9 V Output Adiustment pin Voltage (Note 2) VADJ 5 V Output Current IOUT 500 mA Power Dissipation PD 900 mW Junction Temperature TJ 150 °C Operating Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -55 ~ +150 °C Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. All are open except GND and applicable terminals. ELECTRICAL CHARACTERISTICS (VIN=3.5V, VOUT=2.44V (R1=R2=100KΩ), IOUT=30mA, VC=1.8V, TA=25°C, unless otherwise specified) PARAMETER SYMBOL CONDITIONS MIN TYP Input Voltage VIN 2.6 Output Voltage VOUT 1.3 Load Regulation ΔVOUT IOUT=5~500mA 10 Line Regulation ΔVOUT VIN=3.5~8.5V 6 Ripple Rejection RR 55 Dropout Voltage VD IOUT=500mA Reference Voltage VREF 1.196 1.22 Temperature Coefficient of Output TCVOUT TJ=25 ~ 75°C, IOUT=10mA ±0.1 Voltage Output Noise Voltage VNO(RMS) 10HZ < f < 100kHZ 100 On-State Voltage for Control VC(ON) (Note) 1.8 On-State Current for Control IC(ON) VC=1.8V 20 Off-State Voltage for Control VC(OFF) Quiescent Current IQ IOUT=0A 0.8 Output Off-State Consumption Current IQS VC=0.2V Note: In case that the control terminal (3th pin) is non-connection, output voltage should be OFF state. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MAX UNITS 9.0 V 5.0 V 100 mV 20 mV dB 0.7 V 1.244 V mV/°C 70 0.4 1.2 1 μV V μA V mA μA 4 of 8 QW-R101-023.B R1MX55 LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT DC Input R2 R1MX55 1 3 VIN CI 1μF ON-OFF single High:Output ON Low or Open:Output OFF VOUT 35 1 4 5 2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw CO 1μF Load R1 5 of 8 QW-R101-023.B R1MX55 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS MEASURING CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R101-023.B R1MX55 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS Quiescent Current vs. Junction Temperature (Typical Values) ESR VS. Output Current 100 730 720 CO=1µF VIN=5V, VC=1.8V, CI=1µF, VOUT=2.44V, Ta=25℃ 710 10 700 Vibrating 690 Stable Zone 680 1 670 660 0.5 650 640 VIN=4.3V, VC=1.8V, IOUT=0A, CI=CO=1u (ceramic capacitor) -25 -15 5 25 45 65 85 105 125 Junction Temperature, TJ(°C) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 0.1 1 10 20 50 200 500 Output Current, IOUT(mA) 7 of 8 QW-R101-023.B R1MX55 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS(Cont.) Line Transient Response Load Transient Response Ta=25℃, VIN=5V, VC=1.8V, IOL=50mA, CI=CO=1u (ceramic capacitor) 100 50 100 0 0 -50 -100 -100 -200 500 1 50 Ta=25℃, VC=1.8V, CI=CO=1u (ceramic capacitor) 200 0 0 100 200 300 400 500 600 700 800 900 1000 Time(µs) 0 100 200 300 400 500 600 700 800 900 1000 Time(µs) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 8 QW-R101-023.B