UNISONIC TECHNOLOGIES CO., LTD LR1801 Preliminary CMOS IC 1A FAST ULTRA LOW DROPOUT LINEAR REGULATOR DESCRIPTION The UTC LR1801 operate from a +2V ~ +6V input supply as fast ultra low-dropout linear regulators. Wide output voltage range options are available. The fast response characteristic to make UTC LR1801 suitable for low voltage microprocessor application. The low quiescent current operation and low dropout quality caused by the CMOS process. The UTC LR1801 has ultra low dropout voltage 300mV at 1A load current typically. The ground pin current is typically 60uA at 1mA load current. Output Voltage Precision: Multiple output voltage options are available and ranging from 1.2V ~ 3.5V at room temperature with a guaranteed accuracy of ±1.5%, and ±3.0% when varying line, load and temperature. FEATURES * Ultra Low Dropout Voltage * Low Ground Pin Current * The Guaranteed Output Current is 1A DC * Output Voltage Accuracy ± 1.5% * Over temperature Protection And Over current Protection ORDERING INFORMATION Ordering Number Lead Free Halogen Free LR1801L-xx-SH2-T LR1801G-xx-SH2-T LR1801L-xx-SH2-R LR1801G-xx-SH2-R www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd Package Packing HSOP-8 HSOP-8 Tube Tape Reel 1 of 5 QW-R502-A03.d LR1801 Preliminary MARKING INFORMATION PACKAGE VOLTAGE CODE HSOP-8 12: 1.2V 15 : 1.5V 18: 1.8V 25: 2.5V 33: 3.3V CMOS IC MARKING PIN CONFIGURATION VOUT 1 ON/ OFF 2 8 VIN 7 NC GND NC 3 6 NC GND 4 5 NC PIN DESCRIPTION PIN NO. 1 PIN NAME VOUT 2 ON /OFF PIN DESCRIPTION Output voltage ON/OFF select pin, when connected to the ground the chip in operating normally. 3, 5,6,7 NC No connection 4 GND GND 8 VIN Input voltage Note: The NC pin is electrically open. The NC pin can be connected to VIN or GND. BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R502-A03.d LR1801 Preliminary CMOS IC ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 7 V Shutdown Input Voltage VIN(SHDN) -0.3~VIN V Maximum Operating Current (DC) 1 A Power Dissipation (Note 3) PD Internally Limited Junction Temperature TJ +125 °C Storage Temperature TSTG -65 ~ +150 °C Note: 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. THERMAL DATA PARAMETER Junction to Ambient Junction to Case SYMBOL θJA θJC RATINGS 143 45 UNIT °C/W °C/W ELECTRICAL CHARACTERISTICS (TJ = 25°C, unless otherwise specified.) PARAMETER Input Voltage Output Voltage (Note 4) Output Voltage Line Regulation Output Voltage Load Regulation SYMBOL VIN VOUT(E) TEST CONDITIONS VIN=VOUT(S)+1V IOUT=100mA △VOUT2 IOUT=1000mA Output Current(Note 6) IOUT www.unisonic.com.tw 0.05 0.2 %/V -3 20 mV 0.34 0.10 0.07 0.70 0.40 0.32 0.23 0.38 0.15 0.10 VOUT(S) VOUT(S) x 0.99 -20 1.2V≤VOUT(S)<1.5V 1.5V≤VOUT(S)<2.6V 2.6V≤VOUT(S) ≤3.5V 1.2V≤VOUT(S)<1.5V 1.5V≤VOUT(S)<2.0V 2.0V≤VOUT(S)<2.6V 2.6V≤VOUT(S) ≤3.5V VIN≥VOUT(S)+1V V V V 1000 mA (Note 8) ISS1 UNISONIC TECHNOLOGIES CO., LTD UNIT V 1.5V≤VOUT(S) ≤3.5V VIN=VOUT(S)+1V, ON/OFF pin=ON, No Load VIN=VOUT(S)+1V, ON/OFF pin=OFF, ISS2 No Load VIN=VOUT(S)+1V, ON/OFF pin=ON, Short Circuit Current ISC VOUT=0V Output Voltage Temperature △VOUT/ VIN=VOUT(S)+1V,IOUT=100mA, Coefficient(Note 7) (△TA×VOUT) -40°C ≤ TA≤+85°C ON/OFF Pin Input Voltage “H” VSH VIN=VOUT(S)+1V, RL=1.0KΩ Determinied by VOUT output level ON/OFF Pin Input Voltage “L” VSL Ground Pin Current In Normal Operation Mode Ground Pin Current In Power-off Mode MAX 6 VOUT(S) + 0.015 VOUT(S) x 1.01 VOUT(S)VOUT(S) 0.015 VIN=VOUT(S)+1V,1mA≤IOUT≤300mA Vdrop TYP 1.0V≤VOUT(S)<1.5V △VOUT1/ VOUT(S)+0.5V≤VIN≤5.5V,IOUT=100mA (△VIN×VOUT) IOUT=300mA Dropout Voltage(Note 5) MIN 2 60 90 uA 0.1 1.0 uA 200 mA ±100 ppm/°C 1.0 0.3 V 3 of 5 QW-R502-A03.d LR1801 Preliminary CMOS IC ELECTRICAL CHARACTERISTICS (Cont.) PARAMETER ON/OFF Pin Input Current “H” ON/OFF Pin Input Current “L” Ripple Rejection SYMBOL ISH ISL |RR| TEST CONDITIONS VIN=VOUT(S)+1V,VON/OFF=5.5V VIN=VOUT(S)+1V,VON/OFF=0V VIN=VOUT(S)+1V, 1.2V≤VOUT(S)<3.0V f=1khz, △Vrip=0.5Vrms, 3.0V≤VOUT(S) ≤3.5V IOUT=100mA MIN -0.1 -0.1 TYP MAX 0.1 0.1 UNIT uA uA 65 60 dB Thermal Shutdown detection TSD Junction temperature 150 °C temperature Thermal Shutdown release TSR Junction temperature 120 °C temperature Notes: 1. The LR1801 output must be diode-clamped to ground. If used in a dual-supply system where the regulator load is returned to a negative supply. 2. Between the VIN and VOUT terminals the output PMOS structure contains a diode. This diode is reverse biased normally. If the voltage at the output terminal is forced to be higher than the voltage at the input terminal this diode will get forward biased. This diode can withstand 1Amp of peak current and 200mA of DC current typically. 3. Devices must be derated based on package thermal resistance at elevated temperatures. 4. VOUT(S): Specified output voltage VOUT(E): Actual output voltage Output voltage when fixing IOUT(=100ma) and inputting VOUT(S)+1.0V 5. Vdrop=VIN1-(VOUT3×0.98) VOUT3 is the output voltage when VIN=VOUT(S)+1.0V and IOUT=300mA, 1000mA. 6. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the output current. 7.The change in temperature [mV/°C] is calculated using the following equation. VOUT VOUT mV / C VOUT ( S ) V ppm / C 1000 TA TA VOUT 8.The output current can be at least this value. Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the power dissipation of the package when the output current is large. This specification is guaranteed by design. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R502-A03.d LR1801 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT (1) ON/OFF pins must be pulled high through a 10kΩ pull-up resistor. (2) Generally a series regulator may cause oscillation, depending on the selection of external parts. The following conditions are recommended for this IC. However, be sure to perform sufficient evaluation under the actual usage conditions for selection, including evaluation of temperature characteristics. Input capacitor (CIN): 2.2μF or more Output capacitor (CL): 2.2μF or more 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 5 of 5 QW-R502-A03.d