UNISONIC TECHNOLOGIES CO., LTD US301 Preliminary CMOS IC 0.2A SINGLE CHANNEL CURRENT-LIMITED LOAD SWITCH DESCRIPTION The UTC US301 is single channel current-limited integrated high-side power switches, optimized for hot-swap applications. The US301 provides a complete protection solution for application subject to heavy capacitive loads and the prospect of short circuit. The devices have fast short-circuit response time for improving overall system robustness, and offer reverse-current blocking, over-current and over-temperature protection, as well as under-voltage lockout functionality. It also has controlled built-in soft-start time, typically 0.7 ms. FEATURES * Input voltage range: 2.7V~5.2V * Short-circuit protection and fast response time * Accurate current limiting: 0.4A * On-resistance:250 mΩ * Reverse-current blocking * Soft-start with 0.7ms typical turn-on time * Over-current and over-voltage protection * Thermal protection * Ambient temperature range: -40°C~+85°C ORDERING INFORMATION Ordering Number US301G-AE2-R Package SOT-23-3 Packing Tape Reel MARKING 301G www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 4 QW-R103-099.a US301 Preliminary PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 PIN NAME GND OUT IN CMOS IC DESCRIPTION GND Switch output pin Voltage input pin UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R103-099.a US301 Preliminary CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage Relative to GND VIN 6.5 V Output Voltage Relative to GND VOUT VIN+0.3 V Maximum Continuous Load Current ILOAD Internal Limited A Maximum Junction Temperature TJ 150 °C Storage Temperature Range (Note 4) TSTG -65~150 °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. UL Recognized Rating from -30°C~70°C (Diodes qualified TST from -65°C~150°C) RECOMMENDED OPERATING CONDITIONS PARAMETER Input voltage relative to GND Output Current Operating Ambient Temperature SYMBOL VIN IOUT TA TEST CONDITIONS MIN 2.7 0 -40 TYP MAX 5.2 0.2 +85 UNIT V A °C ELECTRICAL CHARACTERISTICS (TA=25°C, VIN=+5.0V, unless otherwise stated) PARAMETER SYMBOL TEST CONDITIONS (Note 1) MIN TYP MAX UNIT Input UVLO VUVLO VIN rising 2.35 2.90 V Input Quiescent Current IQ Above UVLO, IOUT=0 85 125 µA Reverse Leakage Current IREV VIN=0V, VOUT=5V, IREV at VIN 0.01 0.10 µA Switch On-Resistance RDS(ON) VIN=5V, IOUT=0.2A 100 250 350 mΩ Over-Load Current Limit ILIMIT VIN=5V, VOUT=4V 0.2 0.4 0.5 A Short-Circuit Current IOS OUT shorted to ground 0.2 0.4 0.5 A Reverse-Current Trigger Point IROCP VIN=5.0V, VOUT=5.2V 0.20 0.25 A Deglitch Time from Reverse Current Trigger TTRIG (Note 2) 0.5 0.7 1.0 ms to MOSFET Turn Off Output Over-Voltage Trip Point VOVP (Note 3) 5.2 5.6 V Debounce Time From Output Over-Voltage TOVP 15 µs to MOSFET Turn Off Recovery After Turn-Off from ROCP and VREC 101% VIN OVP CL=0.1µF, RLOAD=20Ω 0.7 ms Output turn-on time (Note 4) TON (UVLO to 90% VOUT-NOM) Thermal Shutdown Threshold TSHDN VIN=2.7V~5.2V 150 °C Thermal Shutdown Hysteresis THYS 20 °C Thermal Resistance Junction-to-Ambient θJA 215 °C/W (Note 5) Notes: 1. Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately. 2. When reverse current triggers at IROCP=0.20A, the reverse current is continuously clamped at IROCP for 0.7ms deglitch time until MOSFET is turned off. 3. During output over-voltage protection, the output draws approximately 60µA current. 4. Since the output turn-on slew rate is dependent on input supply slew rate, this limit is only applicable for input supply slew rate between VIN/0.2ms to VIN/1ms. 5. Device mounted on FR-4 substrate PCB, 2oz copper, with minimum recommended pad layout. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 4 QW-R103-099.a US301 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT Power supply 2.7~5.2V IN Load OUT 0.1µF 0.1µF 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-R103-099.a