UNISONIC TECHNOLOGIES CO., LTD UM608 Preliminary LINEAR INTEGRATED CIRCUIT CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS DESCRIPTION The UTC UM608 is a highly integrated solution for a constant voltage/constant current mode SMPS application. The UTC UM608 contains one 2.5V voltage reference, one operational amplifier for voltage control loop, one operational amplifier for current control loop and two operational amplifiers for charge status. It is suitable for battery charger and other battery systems. FEATURES * Constant Voltage and Constant Current Control * Precision Internal Voltage Reference * Few External Components * Easy Compensation * Charge status output for LED * build-in overvoltage protection for battery ORDERING INFORMATION Note: Ordering Number Lead Free Halogen Free UM608L-S08-R UM608G-S08-R UM608L-S08-T UM608G-S08-T xx: Output Voltage, refer to Marking Information. UM608L-S08-R Package Packing SOP-8 SOP-8 Tape Reel Tube (1)Packing Type (1) R: Tape Reel, T: Tube (2)Package Type (2) S08: SOP-8 (3)Lead Free (3) G: Halogen Free, L: Lead Free www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd 1 of 4 QW-R105-043.a UM608 Preliminary PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN NAME VCC INPUT OUT2 OUT1 GND OUT VCTRL VSENSE LINEAR INTEGRATED CIRCUIT DESCRIPTION Power supply Input of charge status amplifier Charge status output Charge status output Ground Output pin. Sinking current only Input pin of the voltage control loop Input pin of the current control loop BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R105-043.a UM608 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Power Supply Voltage VCC 35 V Junction Temperature TJ 150 °C Operating Temperature TOPR -40~+105 °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 RATINGS 150 UNIT °C/W RATINGS 5 ~ 32 UNIT V RECOMMENDED OPERATING CONDITIONS PARAMETER Voltage Operating SYMBOL θJA SYMBOL VCC ELECTRICAL CHARACTERISTICS (VCC=15V, TA=25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS DEVICE SUPPLY Supply Current ICC VCC=15V VOLTAGE CONTROL LOOP Transconduction Gain (VCTRL) GMV I/(V1-V2) Voltage Control Loop Reference VREF Input Bias Current IIBV CURRENT CONTROL LOOP Transconduction Gain (VSENSE) GMI I/(V1-V2) Current Control Loop Reference VSENSE OUTPUT OF VOLTAGE AND CURRENT CONTROL LOOP Low Output Voltage at 10mA VOL Sinking Current Max Output Current IOM Output to VCC sink current only OUTPUT OF CHARGE SUTUS High Output Voltage at 10mA VOH Source Current Max Output Current IOM Output to GND source current only Sense charge status VREF Input of charge status amplifier UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP MAX UNIT 2 4 mA 1 3.5 1.25 50 mA/mV V nA 1.5 7 190 mA/mV mV 200 mV 13 27 50 mA 13.5 14 V 20 65 40 mA mV 3 of 4 QW-R105-043.a UM608 Preliminary LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT NT 5D x AC EC35 R13 39k C8 68µ FUS 1N54 3 R12 150k X2 AC FUSE2 D5 ER804 R9 30k C14 R25 510p 47 C15 R26 470µ 6.8k C2 FR206 D3 HER107 R14 10 C2 47n UTC UC3842 N2AP817 d C5 4.7n R1 10k R17 22 VCC OUT COMP GND FB ISENSE VREF RT/CT R7 9.1K R5 3.6k C4 100n M2 C6 4.7n BTRsense 0.1 DGND D7 LED 10 N5AP817_1 d C16 100µ R18 910 C9 0.47n + BT1 - 48V D9 R15 d R3 UTC 10k 8N60 BT+ 5 C7 10n R28 2k Comp1_1 R19 910 Rs 500m BT- DGND R10 500 BT+ R29 45.45k org=21k R32 1k Q3 UTC UM608 VCC VCTRL INPUT VSENSE OUT2 OUT R34 15k R36 100k C13 10µ OUT1 R23 5.1k R6 3.6k LED LED D4 D8 22p Rcomp2 Comp2 22k 2.2n Comp1 Rcomp1 2.2n 470k GND RA 120k Qc RB 1k 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 4 of 4 QW-R105-043.a