UNISONIC TECHNOLOGIES CO., LTD UD05302 Advance LINEAR INTEGRATED CIRCUIT HIGH EFFICIENCY 1MHZ, DUAL 3A SYNCHRONOUS STEP DOWN REGULATOR DESCRIPTION The UTC UD05302 is a high-efficiency 1MHz synchronous step-down DC-DC regulator IC capable of delivering up to 3A output current. The UTC UD05302 operates over a wide input voltage ranging from 3V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with 1MHz switching frequency. HSOP-8 FEATURES * Low RDS(ON) for internal switches (top/bottom) 110mΩ/80mΩ * 3~5.5V input voltage range * 1MHz switching frequency minimizes the external components * Internal softstart limits the inrush current * 100% dropout operation ORDERING INFORMATION Ordering Number UD05302G-SH2-R Package HSOP-8 Packing Tape Reel UD05302G-SH2-R (1)Packing Type (1) R: Tape Reel (2)Package Type (2) SH2: HSOP-8 (3)Green Package (3) G: Halogen Free and Lead Free MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 4 QW-R115-006.a UD05302 Advance PIN CONFIGURATION IN1 1 8 FB1 LX1 2 7 EN1 IN2 3 LX2 4 LINEAR INTEGRATED CIRCUIT GND 6 FB2 5 EN2 PIN DESCRIPTION PIN NO. 1, 3 2, 4 7, 5 PIN NAME IN1,2 LX1,2 EN1,2 8, 6 FB1,2 DESCRIPTION Input pin. Decouple this pin to GND paddle with at least 10uF ceramic cap Inductor pin. Connect this pin to the switching node of inductor Enable control. Pull high to turn on. Do not float. Output Feedback Pin. Connect this pin to the center point of the output resistor divider (as shown in Figure 1) to program the output voltage: VOUT=0.6*(1+R1/R2) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R115-006.a UD05302 Advance LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Input Voltage 6 V Enable, FB Voltage VIN+0.6 V Power Dissipation TA=25°C PD 1 W Junction Temperature Range TJ 150 °C Storage Temperature Range TSTG -65~150 °C HBM (Human Body Mode) 2 kV ESD Susceptibility (Note 1) MM (Machine Mode) 200 V 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. RECOMMENDED OPERATING CONDITIONS (Note 2) PARAMETER SYMBOL RATINGS UNIT Supply Input Voltage 3 ~ 5.5 V Junction Temperature Range TJ -40 ~ 125 °C Ambient Temperature Range TA -40 ~ 85 °C Note: θJA is measured in the natural convection at TA=25°C on a low effective single layer thermal conductivity test board of JEDEC 51-3 thermal measurement standard. THERMAL DATA PARAMETER Junction to Ambient Junction to Case SYMBOL θJA θJC RATINGS 50 10 UNIT °C/W °C/W ELECTRICAL CHARACTERISTICS (VIN=5V, VOUT=2.5V, L=2.2μH, COUT=10μF, TA=25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage Range VIN 3 5.5 V Quiescent Current IQ IOUT=0, VFB=VREF×105% 80 µA Shutdown Current ISHDN EN=0 10 µA Feedback Reference Voltage VREF 0.588 0.6 0.612 V FB Input Current IFB VFB=VIN -50 50 nA PFET RON RDS(ON)_P 0.11 Ω NFET RON RDS(ON)_N 0.08 Ω PFET Current Limit ILIM 3.5 A EN Rising Threshold VENH 1.5 V EN Falling Threshold VENL 0.4 V Input UVLO Threshold VUVLO 2.9 V UVLO Hysteresis VHYS 0.15 V Oscillator Frequency FOSC IOUT=100mA 1 MHz Min ON Time 50 ns Max Duty Cycle 100 % Thermal Shutdown Temperature TSD 150 °C Notes: 1. θJA is measured in the natural convection at TA=25°C on a low effective single layer thermal conductivity test board of JEDEC 51-3 thermal measurement standard. 2. The device is not guaranteed to function outside its operating conditions. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 4 QW-R115-006.a UD05302 Advance LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT VIN CIN L1 VOUT1 COUT1 IN1 LX1 IN2 VOUT2 LX2 R3 R1 FB1 R2 L2 EN Control EN1 EN2 FB2 COUT2 R4 GND 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-R115-006.a