UM606

UNISONIC TECHNOLOGIES CO., LTD UM606 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER DESCRIPTION The UTC UM606, for a constant voltage/constant current mode SMPS (switch mode power supplies) application which is a highly integrated solution, it contains one 1.21V voltage reference with ±1% accuracy, one current sensing circuit and two operational amplifiers. The UTC UM606 is an ideal voltage controller for use in adapters and battery chargers because the voltage reference it’s combining with one operational amplifier. And the UTC UM606 is an ideal current limiter for output low side current sensing because the other low voltage reference is combining with the other operational amplifier. 6 5 4 LINEAR INTEGRATED CIRCUIT 1 2 3 SOT-26 FEATURES *Constant voltage and constant current control *Precision internal voltage reference *Few external components *Easy compensation ORDERING INFORMATION Ordering Number Lead Free Halogen Free UM606L-AG6-R UM606G-AG6-R Package SOT-26 Packing Tape Reel MARKING 65 UME6 1 2 3 4 L: Lead Free L: Halogen Free www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd 1 of 7 QW-R105-034.B UM606 PIN CONFIGURATION LINEAR INTEGRATED CIRCUIT PIN DESCRIPTION PIN NO. PIN NAME 1 2 3 4 5 6 VCTRL GND VOUT ICTRL VSENSE VCC Ground Output pin. sinking current only Input pin of the current control loop Input pin of the current control loop Power supply FUNCTION Input pin of the voltage control loop UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R105-034.B UM606 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R105-034.B UM606 ABSOLUTE MAXIMUM RATINGS LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATINGS UNIT DC Supply Voltage VCC 20 V Input Voltage VIN -0.3 ~ VCC V Junction Temperature TJ +150 °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 Case SYMBOL θJC MIN TYP MAX 92 UNIT °C/W RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage Operating Temperature SYMBOL VCC TA MIN 2.5 -20 TYP MAX 18 +70 UNIT V °C ELECTRICAL CHARACTERISTICS (VCC=5V, TA=25°C, unless otherwise specified.) PARAMETER Reference Voltage Current Control Loop Reference Low Output Voltage Total Supply Current Input Bias Current Current Out of Pin ICTRL Output Short Circuit Current. Transconduction Gain (VCTRL) Transconduction Gain (ICTRL). SYMBOL VREF VSENSE VOL ICC IIB IIBI IOS Gmv Gmi TEST CONDITIONS IOUT=2.5mA @10mA Sinking Current VCC=5V @-200mV Output to VCC. Sink Current Only Sink Current Only MIN 1.198 196 TYP 1.21 200 200 0.6 50 25 27 1 1.5 3.5 7 MAX 1.222 204 1.2 UNIT V mV mV mA nA μA mA mA/mV mA/mV 50 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R105-034.B UM606 TYPICAL APPLICATION LINEAR INTEGRATED CIRCUIT VOUT To primary 6 VCC VOUT 3 VCTRL 1 C2 22pF C3 2.2nF GND 2 ICTRL 4 VSENSE 5 R5 22K R1 R2 R4 R3 470K C1 2.2nF Load UM606 R6 500 R7 GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R105-034.B UM606 LINEAR INTEGRATED CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R105-034.B UM606 LINEAR INTEGRATED CIRCUIT U TC 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 7 of 7 QW-R105-034.B