UNISONIC TECHNOLOGIES CO., LTD US94061 Preliminary CMOS IC HIGH SIDE POWER SWITCHES DESCRIPTION The UTC US94061 are high-side load switches incorporating a low on-resistance P-channel MOSFET which provides customers over 2A continuous current. The UTC US94061 is characterized by a fast turn on function. The UTC US94061 keeps in a floating state when an active pull-down signals is on the enable input until a high level signal applies on the EN pin. Built-in level shift circuitry allows low voltage logic signals to switch to higher supply voltages, on the contrary, high level logic signals can control low level voltages. The UTC US94061’s operating voltage varies from 1.8V ~ 5.5V which makes these devices suitable for 1-cell Lithium ion and 2- to 3-cell NiMH/NiCad/Alkaline powered systems as well as all 5V applications. The 2µA low operating current and low shutdown current(less than1µA) make the battery life longer. The UTC US94061 is generally suitable for applications, such as load switch in portable devices: cellular phones, PDAs, MP3 players, digital Cameras, portable instrumentation, battery switch-over circuits and level translators. 6 5 4 1 2 3 SOT-26 FEATURES * Operating voltage range:1.8V ~ 5.5V * Providing 2A continuous operating current * P-channel MOSFET’s RON : 175mΩ typical * Built-in level shift for control logic * Quiescent current is as low as 2µA * Micro-power shutdown less than 1µA * Built-IN Level Shift Circuitry: Controlled 1µs Turn-ON Rise-Time Fast 60ns Turn-OFF Fall Time * Built-IN Fast-OFF Load Discharge Circuit ORDERING INFORMATION Ordering Number US94061G-AG6-R Package SOT-26 www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd Packing Tape Reel 1 of 6 QW-R502-383.A US94061 Preliminary MARKING PIN CONFIGURATION NC VOUT 1 6 GND 2 5 GND EN 3 CMOS IC 4 VIN PIN DESCRIPTION PIN NO. 1 2, 5 3 4 6 PIN NAME VOUT GND EN VIN NC DESCRIPTION Drain of P-channel MOSFET. Ground connections. (Should both be connection to electrical ground). Enable (Input): Active-high CMOS compatible control input. Do not leave floating.. Source of P-channel MOSFET. No connect UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 Ver.A US94061 Preliminary CMOS IC BLOCK DIAGRAM VIN 4 EN 3 1 Level Shift Load Discharge UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw VOUT 3 of 6 Ver.A US94061 Preliminary CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL VIN VEN Input Voltage Enable Voltage Continuous Drain Current (Note 3) TA= 25°C TA= 85°C ID RATINGS +6 +6 ±2 ±1.4 ±6 -50 270 UNIT V V RATINGS 240 UNIT °C/W A Pulsed Drain Current (Note 5) IDP A Continuous Diode Current (Note 7) IS mA Power Dissipation (Note 3)( TA= 85°C) PD mW Operating Ratings (Note 2) Input Voltage Range VIN 1.8~5.5 V Junction Temperature TJ +150 °C Storage Temperature (Note 4) 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. THERMAL DATA PARAMETER Junction to Ambient (Note 3) SYMBOL θJA ELECTRICAL CHARACTERISTICS （TA = 25°C, unless otherwise specified.） PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Static EN Threshold Voltage VTHD(EN)) VIN= 1.8V ~ 4.5V, ID= -250µA 0.5 1.2 V EN Input Current (Quiescent Current) IQ(EN) VIN= VEN= 5.5V 2 4 µA OFF State Leakage Current ILEAK VEN= OPEN or 0V, VIN= +5.5V 1 µA VIN= 4.5V, ID= -100 mA, VEN= 1.5V 175 200 P-Channel Drain-Source VIN= 3.6V, ID= -100 mA, VEN= 1.5V 185 215 RDS(ON) mΩ On-Resistance VIN= 2.5V, ID= -100 mA, VEN= 1.5V 205 245 270 325 VIN= 1.8V, ID= -100 mA, VEN= 1.5V Turn-OFF Impedance RSHDN VIN= 3.6V, VEN= 0V or OPEN 200 300 Ω Dynamic (Note 6) Turn-ON Delay Time tD(ON) VIN= 3.6V, ID= -100mA, VEN= 1.5V 850 1500 ns Turn-ON Rise Time tR VIN= 3.6V, ID= -100mA, VEN= 1.5V 0.5 1 5 µs Turn-OFF Delay Time tD(OFF) VIN= 3.6V, ID= -100mA, VEN= 1.5V 100 150 ns Turn-OFF Fall Time tF VIN= 3.6V, ID= -100mA, VEN= 1.5V 60 100 ns Note: 1.TA = 25°C unless otherwise noted. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(Max), the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. 2. This device is not guaranteed to operate beyond its specified operating rating. 3. Mounted on 1 square-inch pad of 2 oz. copper. 4. IC devices are inherently ESD sensitive. Handling precautions required. 5. Pulse width < 300µs with <2% duty cycle. 6. Dynamic specifications are guaranteed by design. 7. Body diode current conduction is not recommended. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 6 Ver.A US94061 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT VOUT GND 1 6 2 5 3 4 NC GND LOAD EN VIN + Load Switch Application with Capacitive Load Discharge UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 Ver.A US94061 Preliminary CMOS IC IOUT IOUT VOUT VOUT ENABLE ENABLE IOUT IOUT VOUT VOUT ENABLE ENABLE TYPICAL CHARACTERISTICS 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 Ver.A