UNISONIC TECHNOLOGIES CO., LTD UM607 LINEAR INTEGRATED CIRCUIT CC, CV CONTROL FOR BATTERY CHARGER AND ADAPTOR 6 DESCRIPTION 5 4 The UTC UM607 is a voltage and current control IC which has precision voltage reference. These devices have been optimized for battery charger, adapter, second controller of switching regulator systems, and other battery systems. 1 2 3 SOT-26 FEATURES * Constant Voltage Control (CV) and Constant Current Control (CC) * Input voltage ranging from 2.2V to 14V * 40mA photo coupler drive current typically * 1mA maximum operating current * Internal Precision Voltage Reference : 1.240V ± 1% * Easy compensation and low external component count. ORDERING INFORMATION Ordering Number Lead Free Halogen Free UM607xL-AG6-R UM607xG-AG6-R www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing SOT-26 Tape Reel 1 of 7 QW-R105-037.B UM607 LINEAR INTEGRATED CIRCUIT MARKING INFORMATION PACKAGE A-CH REFERENCE VOLTAGE CODE MARKING 6 5 150mV B 70mV D SOT-26 UM7 G 1 PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 PIN NAME A-INPUT GND B+INPUT VCC PC A+INPUT 4 2 Reference Voltage 3 DESCRIPTION Input Pin of the Current Control Loop Ground Line. 0V Reference For All Voltages Input Pin of the Voltage Control Loop DC Supply Line Photo Coupler (P/C) Drive Pin. Sinking Current Only Input Pin of the Current Control Loop UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R105-037.B UM607 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R105-037.B UM607 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING (Ta=25°C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT DC Supply Voltage VCC 16 V Power Dissipation (Note 2) PD 500 mW Operating Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -55 ~ +150 °C Notes: 1. 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. 2. Mount on a glass epoxy circuit board of 30x30mm Pad dimension of 50mm2 RECOMMENDED OPERATING CONDITIONS PARAMETER DC Supply Voltage SYMBOL VCC RATINGS 2.2 ~ 14 UNIT V ELECTRICAL CHARACTERISTICS (VCC = 5V, Ta=25°C, unless otherwise specified) PARAMETER Operating Current Leakage Current Saturation Voltage PC Terminal Current Output Voltage High A CH : Current Control Loop Reference Voltage SYMBOL ICC IPC(LEAK) VPC(SAT) IPC VOH TEST CONDITIONS IPC= off V+=VPC=14V IPC= 20 mA RL= 30KΩ VREF(A) IPC= 2.5mA MIN 20 UM607B UM607D 144 66.5 TYP 0.6 500 40 VCC-0.1 150 70 20 8 MAX 1.0 10 700 70 156 73.5 50 UNIT mA μA mV mA V mV Input Bias Current IB(A) μA Transconduction Gain (Note 1) GM(A) 1.5 mA/mV B CH : Voltage Control Loop Reference Voltage (Note 2) VREF(B) IPC= 1.5mA 1.227 1.240 1.253 V Input Bias Current IB(B) 50 500 nA Transconduction Gain (Note 3) GM(B) 1 3 mA/mV Notes: 1. When the positive input at ICTRL is lower than -151mV, and the voltage is decreased by 1mV, the sinking current at the output OUT will be increased by 8mA. 2. The internal voltage reference is set at 1.240V (bandgap reference). The voltage control loop precision takes into account the cumulative effects of the internal voltage reference deviation as well as the input offset voltage of the trans-conductance operational amplifier. 3. If the voltage on B +Input (the positive input of the amplifier) is higher than the negative amplifier input (VREF(B) = 1.240V), and it is increased by 1mV, the sinking current at the output OUT will be increased by 3mA. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R105-037.B UM607 LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT In the above application schematic, the UTC UM607 is used on the secondary side of a flyback adapter (or battery charger) to provide an accurate control of voltage and current. The above feedback loop is made with an optocoupler. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R105-037.B UM607 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS Supply Current vs. Supply Voltage PC Terminal Current vs. Photo Coupler 90 PC Terminal Current, IPC (mA) Supply Current, ICC (mA) 1.2 1.0 0.8 0.6 0.4 0.2 0 0 2 75 60 45 30 15 0 4 6 8 10 12 14 16 Supply Voltage, VCC (V) 0 Supply Current vs. Ambient Tempreture 0.9 120 Input Bias Current, IB(B) (nA) Supply Current, ICC (mA) 0.85 VIN=12V 0.8 0.75 0.7 0.65 VIN=5V 0.6 0.55 VIN=2.2V 0.5 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 Ambient Temperature, Ta (°C) 16 Input Bias Current vs. Ambient Tempreture 80 60 40 20 -50 -35 -15 5 25 45 65 85 105 Ambient Temperature, Ta (°C) VREF_A (mV) vs. Ambient Tempreture VREF_B (V) vs. Ambient Tempreture 1.250 72 1.245 71 VREF_B (V) VREF_A (mV) 4 6 8 10 12 14 Photo Coupler, VPC (V) 100 0 73 70 69 1.240 1.235 1.230 68 67 -35 2 -15 5 25 45 65 85 Ambient Temperature, TA ( C) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 1.225 -35 -15 5 25 45 65 Ambient Temperature, TA ( C) 85 6 of 7 QW-R105-037.B