UNISONIC TECHNOLOGIES CO., LTD LR3XXYYB CMOS IC 150mA 2CH LDO REGULATOR DESCRIPTION The UTC LR3XXYYB are CMOS voltage regulator ICs that have high output voltage accuracy, low dropout, low supply current, and high ripple rejection. Every voltage regulator IC of UTC LR3XXYYB series consists of an error amplifier, a voltage reference unit, a current limit circuit, resistors for setting output voltage, and a chip enable circuit. Due to built-in transistor with low ON resistance and a chip enable function these ICs perform with low dropout voltage prolongs the battery life of each system. The load transient response and line transient response of the UTC LR3XXYYB Series are excellent, so these ICs are suitable for hand-held communication equipment power supply. 6 5 4 1 2 3 SOT-26 FEATURES * * * * * * * * Low supply current: Typ. 60µA Standby mode: Typ. 0.1µA Low dropout voltage High ripple rejection Low temperature-drift coefficient of output voltage Excellent line regulation High output voltage accuracy Output voltage stepwise setting with a step of 0.1V in the range of 1.5V ~ 3.3V is possible * Built-in fold-back protection circuit Typ. 40mA (current at short mode) * Ceramic capacitor is recommended. (1.0µF or more) ORDERING INFORMATION Note: Ordering Number LR3XXYYBG-AG6-R XXYY: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd Package SOT-26 Packing Tape Reel 1 of 8 QW-R125-002.H LR3XXYYB CMOS IC MARKING INFORMATIONS PACKAGE SOT-26 VOLTAGE CODE XX YY 12:1.2V 18:1.8V 12:1.2V 28:2.8V 15:1.5V 30:3.0V 15:1.5V 28:2.8V 15:1.5V 33:3.3V 18:1.8V 12:1.2V 18:1.8V 25:2.5V 18:1.8V 28:2.8V 18:1.8V 30:3.0V 18:1.8V 33:3.3V 28:2.8V 12:1.2V 28:2.8V 15:1.5V 28:2.8V 18:1.8V 28:2.8V 33:3.3V 29:2.9V 19:1.9V 33:3.3V 15:1.5V 33:3.3V 18:1.8V 33:3.3V 28:2.8V 33:3.3V 33:3.3V PIN CONFIGURATIONS PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 PIN NAME EN1 VIN EN2 VOUT2 GND VOUT1 MARKING DESCRIPTION Channel 1’s output enable control Pin Voltage Input pin Channel 2’s output enable control Pin Channel 2’s voltage output Ground Channel 1’s voltage output UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R125-002.H LR3XXYYB CMOS IC BLOCK DIAGRAM EN1 1 VREF 6 VOUT1 5 GND 4 VOUT2 R1-1 R2-1 Current Limit VIN 2 Current Limit R2-2 VREF R1-2 EN2 3 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R125-002.H LR3XXYYB CMOS IC ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 6.5 V Input Voltage (EN) VEN 6.5 V Output Voltage VOUT -0.3 ~ VIN + 0.3 V Output Current IOUT1+ IOUT2 700 mA Power Dissipation PD 420 mW Operating Temperature TOPR -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. THERMAL DATA PARAMETER Junction to Ambient SYMBOL θJA RATING 250 ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage SYMBOL TEST CONDITIONS VIN=Set VOUT+1V, 1mA≤IOUT≤30mA VOUT Output Current Load Regulation Line Regulation Dropout Voltage Supply Current Supply Current (Standby) IOUT ∆VLOAD ∆VLINE VD ISS ISTN-BY Power Supply Ripple Rejection PSRR MIN VOUT ×0.98 150 TYP VIN−VOUT=1.0V VIN=Set VOUT+1V, 1mA≤IOUT≤150mA 15 Set VOUT+0.5V≤VIN≤6.0V, IOUT=30mA 0.02 Refer to the Electrical Characteristics by Output Voltage VIN=Set VOUT+1V (Both LDOs) 90 VIN=Set VOUT+1V VCE=GND 0.1 Ripple 0.5Vp−p, VIN=Set VOUT+1V 75 (Note1) IOUT=30mA (In case that VOUT≤1.7V, 65 (Note2) VIN=Set VOUT+1.2V) 2.0 Input Voltage VIN ∆VOUT Output Voltage IOUT=30mA, -40°C≤TOPR≤85°C ∆TOPR Temperature Coefficient Short Current Limit ISC(LIMIT) VOUT=0V Pull-Down Resistance for RPD EN Pin EN Input Voltage “H” VCEH EN Input Voltage “L” VCEL Output Noise eN BW=10Hz ~100kHz Low Output Nch Tr. ON RLOW VCE=0V Resistance (of B version) Notes: 1. f=1kHz, 70dB as to VOUT≥2.5V Output type 2. f=10kHz, 60dB as to VOUT≥2.5V Output type UNIT °C/W 0.7 MAX VOUT ×1.02 UNIT V 40 0.10 mA mV %/V 120 1.0 µA µA dB 6.0 V ±100 ppm /°C 40 mA 2.0 8.0 MΩ 0.3 30 V V µVrms 60 Ω 1.5 ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE Output Voltage VOUT (V) VOUT=1.2 VOUT=1.5 VOUT=1.6 VOUT=1.7 1.8≤VOUT≤2.0 2.1≤VOUT ≤2.7 2.8≤VOUT≤3.3 CONDITION IOUT=150mA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Dropout Voltage, VD (V) TYP 0.40 0.38 0.35 0.33 0.32 0.28 0.22 MAX 0.75 0.70 0.65 0.60 0.55 0.50 0.35 4 of 8 QW-R125-002.H LR3XXYYB CMOS IC TEST CIRCUITS UTC LR3XXYYB EN2 VOUT2 C3 1μF GND VIN IOUT2 C1 1μF EN1 V VOUT2 VOUT1 C2 1μF V VOUT1 IOUT1 Fig.1 Standard Test Circuit Fig.2 Supply Current Test Circuit UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 8 QW-R125-002.H LR3XXYYB CMOS IC TEST CIRCUITS(Cont.) Fig.3 Ripple Rejection, Line Transient Response Test Circuit Fig.4 Load Transient Response Test Circuit UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R125-002.H LR3XXYYB CMOS IC TYPICAL APPLICATION CIRCUIT UTC LR3XXYYB IN EN2 VOUT2 GND VIN EN1 VOUT1 OUT2 C3 1μF C1 1μF C2 OUT1 1μF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R125-002.H LR3XXYYB CMOS IC Output Voltage, VOUT (V) Input Voltage, VIN (V) Output Current, IOUT (A) Output Current, IOUT (A) Output Voltage, VOUT (V) Input Voltage, VIN (V) Output Voltage, VOUT (V) Output Voltage, VOUT (V) TYPICAL CHARACTERISTICS 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-R125-002.H