UNISONIC TECHNOLOGIES CO., LTD UR1171 Preliminary CMOS IC 1.5A LDO REGULATOR DESCRIPTION The UTC UR1171 is a typical LDO (linear regulator) with the features of high output voltage accuracy, low supply current, low ON-resistance, and high ripple rejection. During operation of the UTC UR1171, the dropout voltage is very low and the response of line transient and load transient are very well. Internally, there’re many functions of UTC UR1171 which can be seen in the block figure. There are a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit, and a chip enable circuit in each UTC UR1171. The UTC UR1171 can be used as an ideal of the power supply for hand-held communication equipment, such as: power source for portable communication equipment, power source for electrical appliances, for example, cameras, VCRs and camcorders and power source for battery-powered equipment. SOP-8 FEATURES * Low standby current (TYP=0.1µA) * Supply current (TYP=80µA) * Output current (MIN=1.5A@VIN=VOUT+1.0V) * Output voltage accuracy (±2.0%) * Output voltage (1.2V~5.0V) * Low dropout voltage (TYP=0.09V@VOUT=3.0V, IOUT=300mA) * Line regulation (TYP=0.05%/V) * Low temperature-drift coefficient of output voltage * Built-in thermal shunt circuit * Built-in current limit circuit ORDERING INFORMATION Ordering Number Lead Free Halogen Free UR1171xxL-S08-T UR1171xxG-S08-T UR1171xxL-S08-R UR1171xxG-S08-R UR1171xxL-S08-T Package Packing SOP-8 SOP-8 Tube Tape Reel (1)Packing Type (1) T: Tube, R: Tape Reel (2)Package Type (2) S08: SOP-8 (3)Lead Free (3) L: Lead Free, G: Halogen Free (4)Enable Threshold Level (4) AH: 1.5A/Active High www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd 1 of 5 QW-R502-A33.a UR1171 Preliminary PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2, 5 3 4, 7, 8 6 PIN NAME VOUT GND CE NC VDD CMOS IC DESCRIPTION Output Pin Ground Pin Chip Enable Pin No Connection Input Pin BLOCK DIAGRAM VDD 6 1 VOUT 2 GND 5 GND + Vref Current Limit and OTP CE 3 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R502-A33.a UR1171 Preliminary CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 7.0 V Input Voltage(CE or CE Input Pin) VCE -0.3~VIN+0.3 V Output Voltage VOUT -0.3~VIN+0.3 V Output Current IOUT 3.5 A Power Dissipation PD 606 mW Operating Temperature TOPT -40~85 °C Storage Temperature TSTG -55~125 °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. ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified) UR1171AH PARAMETER Input Voltage Supply Current Standby Current Output Voltage Output Current Load Regulation SYMBOL VIN ISS ISTB VOUT IOUT ∆VOUT/∆IOUT Dropout Voltage 1.5≤VOUT<1.6 1.6≤VOUT≤5.0 1.5≤VOUT<4.7 Ripple Rejection 4.7≤VOUT≤5.0 Output Voltage Temperature Coefficient Short Current Limit Pull-down resistance for CE pin CE Input Voltage “H” Thermal Shutdown Detector Threshold Temperature Thermal Shutdown Released Temperature Line Regulation VDIF ∆VOUT/∆VIN RR ∆VOUT/∆T TEST CONDITIONS VIN-VOUT=1.0V, VCE=VIN VIN-VOUT=1.0V, VCE=0V VIN-VOUT=1.0V, IOUT=200mA x0.98 VIN-VOUT=1.0V 1.5 VIN-VOUT=1.0V, 1mA≤IOUT≤300mA IOUT=300mA, VOUT=1.5≤VOUT<1.6 IOUT=300mA, VOUT=1.6≤VOUT<1.7 IOUT=300mA, VOUT=1.7≤VOUT<1.8 IOUT=300mA, VOUT=1.8≤VOUT<2.0 IOUT=300mA, VOUT=2.0≤VOUT<2.5 IOUT=300mA, VOUT=2.5≤VOUT≤5.0 IOUT=200mA, VOUT=2.1V≤VIN<6.0V IOUT=200mA, VOUT+0.5V≤VIN≤6.0V f=1kHz, Ripple 0.5 VP-P,VIN−VOUT=1.0V f=1kHz, Ripple 0.5VP-P, VIN=5.75V 10 0.16 0.14 0.13 0.12 0.10 0.09 60 0.35 0.32 0.28 0.24 0.21 0.18 UNIT V µA µA V A mV V V V V V V 0.05 0.30 %/V IOUT=10mA, -40°C ≤ TA ≤ 85°C ±100 TYP 80 0.1 MAX 6.0 160 2.0 x1.02 50 ppm /°C mA MΩ V VOUT=0V TTSD Junction Temperature 150 °C TTSR Junction Temperature 120 °C 2.5 1.5 200 5.0 dB ILIM RPD VCEH UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 10.0 VIN 3 of 5 QW-R502-A33.a UR1171 Preliminary CMOS IC TEST CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R502-A33.a UR1171 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT 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-A33.a