UNISONIC TECHNOLOGIES CO., LTD UR15033 LINEAR INTEGRATED CIRCUIT 2 CHANNEL LOW-DROPOUT VOLTAGE REGULATOR FEATURES *Dual output: 5.0V/1A, 3.3V/1A. *Output voltage precision of ±2%. *Output consists of PNP power transistor with low-dropout voltage. *Built-in over current protection circuit (OCP). *Built-in thermal shut down circuit (TSD). *Ideal for hard disk drives applications. *Pb-free plating product number: UR15033L ORDERING INFORMATION Ordering Number Normal Lead Free Plating UR15033-TN5-R UR15033L-TN5-R UR15033-TN5-T UR15033L-TN5-T Package Packing TO-252-5 TO-252-5 Tape Reel Tube UR15033L-TN5-R (1)Packing Type (1) R: Tape Reel, T: Tube (2)Package Type (3)Lead Plating (2) TN5: TO-252-5 (3) L: Lead Free Plating, Blank: Pb/Sn PIN DESCRIPTIONS PIN NO. 1 2 3 4 5 PIN NAME Vcc N.C. GND VO1 VO2 PIN FUNCTION Power Supply Not Internally Connected Ground 5.0V Output 3.3V Output www.unisonic.com.tw Copyright © 2008 Unisonic Technologies Co., Ltd 1 of 6 QW-R102-020.D UR15033 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM Vcc PIN 1 Vcc Reference Voltage Vcc + Vo1 Current Limit PIN 4 Sat. Prevention Vcc Vcc + Vo2 Thermal Shut Down Current Limit PIN 5 Sat. Prevention NC PIN 2 PIN 3 GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R102-019.D UR15033 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (TA=25℃) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC 18 V Power Dissipation PD 1 W Junction Temperature TJ 150 °C Operating Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -55 ~ +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. RECOMMANDED OPERATING RATINGS (TA=25℃) PARAMETER Input Voltage 5.0V Output Current 3.3V Output Current SYMBOL Vcc Io1 Io2 MIN 4.0 TYP MAX 16.0 1 1 UNIT V A A ELECTRICAL CHARACTERISTICS (refer to the test circuit, TA=25℃, VCC=6V unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Bias Current IB Io1=0mA, Io2=0mA 0.8 1.5 mA 5.0V Output Output Voltage 1 Vo1 Io1=500mA 4.9 5.0 5.1 V Dropout Voltage 1 △VD1 Io1=500mA 0.25 0.5 V Peak Output Current 1 Io1 1.0 1.7 A Ripple Rejection 1 R.R.1 f=120Hz, ein=1Vrms, Io1=200mA 50 58 dB Line Regulation 1 △VLINE1 Vcc=6V ~ 16V, Io1=500mA 5 30 mV Load Regulation 1 △VLOAD1 Io1=0mA ~ 1A 30 75 mV Temperature Coefficient of Output TCVO1 Io1=5mA, TJ=0 ~ 125℃ ±0.01 %/℃ Voltage 1 (Note 1) Short circuit Output Current 1 IOS1 Vcc=16V 270 mA 3.3V Output Output Voltage 2 Vo2 Io2=500mA 3.234 3.30 3.366 V Peak Output Current 2 Io2 1.0 1.7 A Ripple Rejection 2 R.R.2 f=120Hz, ein=1Vrms, Io2=200mA 50 58 dB Line Regulation 2 △VLINE2 Vcc=6V ~ 16V, Io2=500mA 5 30 mV Load Regulation 2 △VLOAD2 Io2=0mA ~ 1A 30 75 mV Temperature Coefficient of Output TCVO2 Io2=5mA, TJ=0 ~ 125℃ ±0.01 %/℃ Voltage 2 (Note 1) Short circuit Output Current 2 IOS2 VCC=16V 270 mA Note: 1. Design Guarantee. (Outgoing inspection is not done on all products.) 2. This product is not designed for protection against radioactive rays. 3. All characteristic are measured with a capacity across the input (0.33μF) and the output (22μF). Measurement is done at TA≒TJ, and variations in the parameter of all measurement (except for Temperature Coefficient of Output Voltage) caused by temperature change are not considered. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R102-019.D UR15033 LINEAR INTEGRATED CIRCUIT POWER DISSIPATION STANDARD APPLICATION CIRCUIT Vo1 Vcc GND 22µF Vo2 22µF + + OR 10µF Ceramic 1O OR 1O 10µF Ceramic TEST CIRCUIT FOR EACH CONDITION V Vcc GND 0.33µF A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Vo1 or Vo2 22µF + A Io 4 of 6 QW-R102-019.D UR15033 LINEAR INTEGRATED CIRCUIT TEST CIRCUIT FOR RIPPLE REJECTION RATIO Vcc GND ein VIN 0.33µF Vo1 or Vo2 22µF + V Io APPLICATION INFORMATION Operation Supply Voltage Range The circuit functionality is guaranteed within operation of ambient temperature range, as long as it is within operation supply voltage range. The standard electrical characteristic values are guaranteed at the test circuit voltage of Vcc=6V. The cannot be guaranteed at other voltages in the operating range of 4.0V ~ 16.0V, homever, the variation will be small. For proper regulation, this device must be operated in the Recommended Operating Region shown above. Power Dissipation Refer to the thermal duration characteristics shown in Fig.3. Also, be sure to use this IC within a power dissipation rage allowing enough margins. Output and Bypass Capacitor To prevent oscillations, place the output capacitor between the output pin and GND for both channel. There is a possibility for oscillation if capacitor's value changes due to temperature, voltage, etc. More than 22μF electrolytic capacitor is recommended. If an extremely large value of (over 1000μF) is used, it may cause oscillations at low frequency. In case of using ceramic capacitor (it is recommended more than 10μF) connect with 1Ω resistance serially as ESR. For the bypass capacitor, a 0.33μF capacitor placed as close to VCC pin and GND pin as possible is recommended. Over- current Protection Circuit The over-current protection circuits are built in at the outputs. They protect the IC from being damaged when the load is short-circuited or subjected to an over current condition. This protection circuits perform holdback current limiting. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R102-019.D UR15033 LINEAR INTEGRATED CIRCUIT Thermal Protection Circuit A thermal shut down circuit (T.S.D.) is built into the IC to prevent damage due to overheating, Therefore, all the outputs are turned off when the T.S.D. circuit is activated and are turned on when the temperature recedes to the specified level. However, the T.S.D. circuit is only for extreme conditions and the regulator circuit should still be designed for the IC not to exceed TJ(max)=150℃. Grounding It is recommended that every capacitor (bypass and output capacitors) is grounded to PIN3 using single-point connections. Electromagnetic Fields The IC is susceptible to strong electromagnetic fields and may cause malfunction. Therefore, caution should be used when placing it on the PCB. Protection Diodes It is recommended that protection diodes be used when the output is connected to an inductive load. 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 6 of 6 QW-R102-019.D