AOZ1334DI-01 Single Channel Smart Load Switch General Description Features The AOZ1334DI-01 is a single channel load switch with very low on-resistance in a small package. It contains an n-channel MOSFET for up to VBIAS-1.5V input voltage operation and 10A current channel with 3.2V to 5.5V bias supply. The load switch is controlled by a low voltage control signal through ON pin. 0.8V to VBIAS-1.5V input voltage range 10A continuous current Low RDS(ON) internal NFETs 35A low quiescent current The AOZ1334DI-01 integrates an internal 220 load resistor for quick output discharge when load switch is off. 10s turn on rise time 3.2V to 5.5V bias voltage Integrated quick output discharge resistor The AOZ1334DI-01 is available in a 3mm x 3mm DFN-8L package with bottom thermal pad and is rated over a -40C to +85C ambient temperature range. Thermally enhanced 3mm x 3mm DFN-8L package - 5m at VBIAS = 5V, VIN = 1.05V, TA = 85C Applications Portable computers Ultrabooks Tablet PCs Set top boxes LCD TVs Telecom/Networking/Datacom equipment SSD Consumer electronics Typical Application VIN VOUT OUT IN CIN CL IN OUT AOZ1334DI-01 VBIAS VBIAS OUT ON GND CBIAS ON OFF Rev. 1.0 May 2014 www.aosmd.com Page 1 of 12 AOZ1334DI-01 Ordering Information Part Number Temperature Range Package Environmental AOZ1334DI-01 -40C to +85C 3mm x 3mm DFN-8L Green All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards. Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information. Pin Configuration IN 1 8 OUT OUT 8 IN 2 7 OUT OUT VBIAS 3 6 OUT ON 4 5 GND IN EPAD 1 IN 7 2 IN OUT 6 3 VBIAS GND 5 4 ON IN EPAD 3mm x 3mm DFN-8 3mm x 3mm DFN-8 (Top View) (Bottom View) Pin Description Pin Number Pin Name 1, 2, EPAD IN 3 VBIAS 4 ON 5 GND Ground. 6, 7, 8 OUT Load switch output. Rev. 1.0 May 2014 Pin Function Load Switch Input. Bypass capacitor is recommended to minimize input voltage dip. Recommended voltage range of this pin is 0.8V to VBIAS-1.5V to obtain optimal RON. Bias Voltage. Power supply input for the device. Recommended voltage range is 3.2V to 5.5V. Enable Input. Load switch is on when ON is pulled high. Load switch is off when ON is pulled low. Do not leave floating. www.aosmd.com Page 2 of 12 AOZ1334DI-01 Functional Block Diagram IN OUT IN OUT VBIAS OUT ON Control Logic GND Absolute Maximum Ratings Recommend Operating Ratings Exceeding the Absolute Maximum ratings may damage the device. The device is not guaranteed to operate beyond the Maximum Operating Ratings. Parameter Parameter Rating IN, ON, VBIAS, OUT to GND -0.3V to 6V Junction Temperature (TJ) +150C Storage Temperature (TS) -65C to +150C ESD Rating HBM/CDM 2kV/1kV Rating Supply Voltage (VIN) VBIAS-1.5V Ambient Temperature (TA) -40C to +85C Package Thermal Resistance 3x3 DFN-8 (JC) 3x3 DFN-8 (JA) 8C/W 60C/W Electrical Characteristics TA = 25C, VBIAS = 5V, VIN = 1.05V, unless otherwise specified. Specifications in BOLD indicate a temperature range of -40C to +85C. Symbol VIN VBIAS ID IPLS Iq IOFF IINOFF ION Parameter IN Supply Voltage Conditions VON = 5V VBIAS Supply Voltage Min. Typ. Max. Units 0.8 1.05 VBIAS-1.5 V 3.2 5 5.5 V Maximum Continuous Current VON = 5V 10 A Maximum Pulsed Switch Current VIN = VON = 5V Pulse < 300s, 2% Duty Cycle 12 A Quiescent Supply Current of VBIAS IOUT = 0V, VON = 5V 35 A VBIAS Shutdown Supply Current VON = 0V, VOUT = 0V IN Shutdown Supply Current VON = 0V, VOUT = 0V 2 A ON Leakage Current VON = 5V 1 A VONH ON High Level Voltage VONL ON Low Level Voltage 2 1.2 A V 0.5 V Switching ON Resistance RON Switch ON-State Resistance RPD Output Pull-Down Resistance Rev. 1.0 May 2014 IOUT = -200mA, VON = 5V, VBIAS = 5V 3.9 6.3 m IOUT = -200mA, VON = 5V, VBIAS = 3.3V 4.6 7.6 m IOUT = 15mA, VON = 0V 220 300 www.aosmd.com Page 3 of 12 AOZ1334DI-01 Switching Characteristics VON 50% 50% t OFF tON 90% VOUT 90% tD-ON 50% 50% 10% 1% 10% tF tR Test conditions: TA = 25C, CIN = 1F, CL = 0.1F, RL = 10 (unless otherwise specified). Symbol Parameter Min. Typ. Max. Units VIN = 1.5V, VBIAS = VON = 5V tON Turn-ON Time 8.5 tD-ON Turn-ON Delay time 2 tR Turn-ON Rise Time 9.5 tOFF tF Turn-OFF Time 3 Turn-OFF Fall Time 1 s VIN = 1.05V, VBIAS = VON = 5V tON Turn-ON Time 8 tD-ON Turn-ON Delay time 2 tR Turn-ON Rise Time 8.5 Turn-OFF Time 3.5 tOFF tF Rev. 1.0 May 2014 Turn-OFF Fall Time s 1 www.aosmd.com Page 4 of 12 AOZ1334DI-01 Typical Characteristics Quiescent Current vs. VBIAS RDSON vs. VIN (VIN=VBIAS=VON=5V) 40 (VBIAS=5.5V, IOUT=-200mA) 10 -40C 25C 70C 85C 8 RDSON (m) 36 IBIAS (A) -40C 9 25C 70C 85C 38 34 7 6 5 32 4 30 3 2 28 3.2 3.6 4.0 4.4 VBIAS (V) 4.8 5.2 0.8 5.6 1.2 RDSON vs. VIN -40C 7.0 25C 70C 85C 2.4 VIN (V) 2.8 3.2 3.6 4.0 (TA=25C, VIN=2V) 2.5 2.0 6.5 6.0 VOUT (V) RSDON (m) 7.5 2.0 VOUT vs. VON (VBIAS=3.2V, IOUT=-200mA) 8.0 1.6 5.5 5.0 1.5 1.0 4.5 VBIAS = 3.2V 0.5 4.0 VBIAS = 4.0V VBIAS = 5.0V VBIAS = 5.5V 3.5 0 3.0 0.8 0.9 Rev. 1.0 May 2014 1.0 1.1 1.2 1.3 VIN (V) 1.4 1.5 1.6 1.7 www.aosmd.com 0.5 0.6 0.7 0.8 VON (V) 0.9 1.0 1.1 Page 5 of 12 AOZ1334DI-01 Typical Characteristics (Continued) tON vs. VIN tD-ON vs. VIN (VBIAS=3.2V) 14 4.5 13 12 -40C 4.0 11 25C 70C 85C 3.5 10 -40C tD-ON (s) tON (s) (VBIAS=5.5V) 5.0 9 8 3.0 25C 70C 85C 2.5 2.0 7 1.5 6 1.0 5 0.5 4 0 0.8 0.9 1.0 1.1 1.2 1.3 VIN (V) 1.4 1.5 1.6 0.8 1.7 1.2 1.6 2.0 tON vs. VIN 2.8 3.2 3.6 4.0 tR vs. VIN (VBIAS=5.5V) 14 2.4 VIN (V) (VBIAS=3.2V) 13 12 12 11 10 tR (s) tON (s) 10 8 6 9 8 4 2 -40C 7 -40C 25C 70C 85C 6 25C 70C 85C 0 5 0.8 1.2 1.6 2.0 8 2.4 VIN (V) 2.8 3.2 3.6 0.8 4.0 0.9 1.0 1.1 1.2 1.3 VIN (V) 1.4 tD-ON vs. VIN tR vs. VIN (VBIAS=3.2V) (VBIAS=5.5V) 18 7 1.5 1.6 1.7 16 6 14 5 25C 70C 85C 4 tR (s) tD-ON (s) -40C 12 10 3 8 2 -40C 25C 70C 85C 6 1 4 0 0.8 1.0 Rev. 1.0 May 2014 1.2 1.4 1.6 1.8 VIN (V) 2.0 2.2 2.4 2.6 www.aosmd.com 0.8 1.2 1.6 2.0 2.4 VIN (V) 2.8 3.2 3.6 4.0 Page 6 of 12 AOZ1334DI-01 Typical Characteristics (Continued) tOFF vs. VIN tOFF vs. VIN (VBIAS=3.2V) 4.0 (VBIAS=5.5V) 5.0 3.5 3.0 -40C 4.5 -40C 25C 70C 85C 4.0 25C 70C 80C tOFF (s) tOFF (s) 3.5 2.5 2.0 1.5 3.0 2.5 2.0 1.5 1.0 1.0 0.5 0.5 0 0 0.8 0.9 1.0 1.1 1.2 1.3 VIN (V) 1.4 1.5 1.6 0.8 1.7 1.2 1.6 2.0 tF vs. VIN 2.8 3.2 4.0 (VBIAS=5.5V) 3.0 -40C -40C 2.5 25C 70C 85C 2.5 25C 70C 85C 2.0 tF (s) 2.0 tF (s) 3.6 tF vs. VIN (VBIAS=3.2V) 3.0 2.4 VIN (V) 1.5 1.5 1.0 1.0 0.5 0.5 0 0 0.8 0.9 Rev. 1.0 May 2014 1.0 1.1 1.2 1.3 VIN (V) 1.4 1.5 1.6 1.7 www.aosmd.com 0.8 1.2 1.6 2.0 2.4 VIN (V) 2.8 3.2 3.6 4.0 Page 7 of 12 AOZ1334DI-01 Functional Characteristics Turn-ON & Turn-ON Rise Times Turn-ON & Turn-ON Rise Times (VINX=1.05V, VBIAS=3.2V, CIN=1F, CL=0.1F, RL=10) (VINX=1.05V, VBIAS=5V, CIN=1F, CL=0.1F, RL=10) VON (5V/div) VON (5V/div) VBIAS (5V/div) VBIAS (5V/div) VOUT (200mV/div) VOUT (200mV/div) Turn-OFF & Turn-OFF Fall Times Turn-OFF & Turn-OFF Fall Times (VINX=1.05V, VBIAS=3.2V, CIN=1F, CL=0.1F, RL=10) (VINX=1.05V, VBIAS=5V, CIN=1F, CL=0.1F, RL=10) VON (5V/div) VON (5V/div) VBIAS (5V/div) VBIAS (5V/div) VOUT (200mV/div) VOUT (200mV/div) Turn-ON & Turn-OFF at IOUT=-10A (VINX=1.05V, VBIAS=3.2V, CIN=1F, CL=0.1F, RL=0.1) Turn-ON & Turn-OFF at IOUT=-10A (VINX=1.05V, VBIAS=5V, CIN=1F, CL=0.1F, RL=0.1) VON (5V/div) VBIAS (5V/div) Rev. 1.0 May 2014 VON (5V/div) VBIAS (5V/div) VOUT (500mV/div) VOUT (500mV/div) IOUT (5A/div) IOUT (5A/div) www.aosmd.com Page 8 of 12 AOZ1334DI-01 Detailed Description Applications Information ON/OFF Control The basic AOZ1334DI-01 application circuit is shown in the first page. Component selection is explained below. The AOZ1334DI-01 is enabled when the ON pin is on active high with 1.2V or above voltage. The device is disabled when the ON pin voltage is 0.5V or lower. The EN input is compatible with both TTL and CMOS logic. VBIAS Voltage Range For optimal on-resistance of load switch, make sure VIN 1.5V + VBIAS and VBIAS is within the voltage range from 3.2V to 5.5V. On-resistance of load switch will be higher if VIN + 1.5V > VBIAS. Resistance curves of a typical sample device at different VBIAS = VIN at IOUT = -200mA are shown as below. 4.7 Input Capacitor A capacitor of 10F or higher value is recommended to be place close to the IN pins of AOZ1334DI-01. This capacitor can reduce the voltage drop caused by the in-rush current during the turn-on transient of the load switch. A higher value capacitor can be used to further reduce the voltage drop during high-current application. Output Capacitor A capacitor of 0.1F or higher value is recommended to be place between the OUT pins and GND. The switching times are affected by the capacitance. A larger capacitor makes the initial turn-on transient smoother. This capacitor must be large enough to supply a fast transient load in order to prevent the output from dropping. RDSON (m) 4.5 Thermal Considerations To ensure proper operation, the maximum junction temperature of the AOZ1334DI-01 should not exceed 150C. Several factors attribute to the junction temperate rise: load current, MOSFET on-resistance, junction-to-ambient thermal resistance, and ambient temperature. The maximum load current can be determined by: 4.3 VBIAS = 3.3V VBIAS = 5.0V VBIAS = 5.5V 4.1 TA = 25C 3.9 3.7 I LOAD MAX = 3.5 1 2 3 4 5 6 7 8 9 T J MAX - T C -------------------------------------- JC R DS ON 10 IOUT (A) It is noted that the maximum continuous load current is 10A. 6.0 5.8 Layout Guidelines RDSON (m) 5.6 Good PCB is important for improving the thermal performance of AOZ1334DI-01. Place the input and output bypass capacitors close to the IN and OUT pins. The input and output PCB traces should be as wide as possible for the given PCB space. Use a ground plane to enhance the power dissipation capability of the device. 5.4 VBIAS = 3.3V 5.2 VBIAS = 5.0V VBIAS = 5.5V 5.0 TA = 85C 4.8 4.6 4.4 4.2 4.0 1 2 3 4 5 6 7 8 9 10 IOUT (A) Rev. 1.0 May 2014 www.aosmd.com Page 9 of 12 AOZ1334DI-01 Package Dimensions, DFN3x3_8L, EP1_S b1 D 8x bbb 8 e b C A B 8 aaa C 2x L E E1 L 1 1 aaa C 2x D1 TOP VIEW Pin1 Identification BOTTOM VIEW ccc C A1 Seating Plane A ddd C SIDE VIEW C RECOMMENDED LAND PATTERN Symbols Min. 1.60 0.40 0.30 0.30 0.65 1.30 2.60 1.60 Dimensions in millimeters 2.40 UNIT: mm A A1 b1 b c D D1 E E1 e L R aaa bbb ccc ddd 0.70 0.00 1.55 0.25 --2.90 2.35 2.90 1.50 Nom. 0.75 0.02 1.60 0.30 0.203 3.00 2.40 3.00 1.60 0.65 BSC 0.35 0.40 0.20 0.15 0.10 0.10 0.08 Max. 0.80 0.05 1.65 0.35 --3.10 2.45 3.10 1.70 0.45 Dimensions in inches Symbols Min. A A1 b1 b c D D1 E E1 e L R aaa bbb ccc ddd Nom. Max. 0.028 0.000 0.061 0.010 --0.114 0.093 0.114 0.059 0.030 0.031 0.001 0.002 0.063 0.065 0.012 0.014 0.008 --0.118 0.122 0.094 0.096 0.118 0.122 0.063 0.067 0.026 BSC 0.014 0.016 0.018 0.008 0.006 0.004 0.004 0.003 Notes: 1. Dimensions and tolerances conform to ASME Y14.5M-1994. 2. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact. 3. Dimension b applies to metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. If the terminal has the optional radius on the other end of the terminal, dimension b should not be measured in that radius area. 4. Coplanarity ddd applies to the terminals and all other bottom surface metallization. Rev. 1.0 May 2014 www.aosmd.com Page 10 of 12 AOZ1334DI-01 Tape and Reel Dimensions, DFN3x3_8L, EP1_S Carrier Tape D0 P1 A-A D1 A E1 K0 E2 E B0 A P2 T P0 A0 Feeding Direction UNIT: mm Package A0 DFN 3x3_EP B0 3.40 3.35 0.10 0.10 D0 K0 1.50 1.10 0.10 +0.10/-0.0 D1 E E1 E2 P0 P1 P2 T 1.50 +0.10/-0.0 12.00 0.30 1.75 0.10 5.50 0.05 8.00 0.10 4.00 0.10 2.00 0.05 0.30 0.05 Reel W1 N S G K M V R H W UNIT: mm Tape Size Reel Size M N 12mm o330 o330.00 o97.00 0.50 0.10 W1 H K S W 13.00 17.40 o13.00 10.60 2.00 0.50 0.30 1.00 +0.5/-0.2 G N/A R N/A V N/A Leader / Trailer & Orientation Unit Per Reel: 5000pcs Trailer Tape 300mm Min. Rev. 1.0 May 2014 Components Tape Orientation in Pocket www.aosmd.com Leader Tape 500mm Min. Page 11 of 12 AOZ1334DI-01 Package Marking AOZ1334DI-01 (DFN3x3-8) 1334 Part Number Code XOAW Extension Code LT Option Code Year & Week Code Assembly Lot Code Assembly Location Code LEGAL DISCLAIMER Alpha and Omega Semiconductor makes no representations or warranties with respect to the accuracy or completeness of the information provided herein and takes no liabilities for the consequences of use of such information or any product described herein. Alpha and Omega Semiconductor reserves the right to make changes to such information at any time without further notice. This document does not constitute the grant of any intellectual property rights or representation of non-infringement of any third party's intellectual property rights. LIFE SUPPORT POLICY ALPHA AND OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. Rev. 1.0 May 2014 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.aosmd.com Page 12 of 12