AOZ1320CI-02

AOZ1320 Load Switch with Controlled Slew Rate General Description The AOZ1320 is a P-channel high-side load switch with controlled slew rate. Three slew rate options are available. The AOZ1320-01 and AOZ1320-04 have a slew rate of 1ms, and the AOZ1320-07 has a slew rate of 4.5ms. The AOZ1320-02 and AOZ1320-05 feature fast Slew Rate (less than 500ns). The slew rate of AOZ1320-03 and AOZ1320-06 is 100µs. The AOZ1320-03, AOZ1320-04, AOZ1320-05, and AOZ1320-07 provide an output discharge circuit to quickly discharge the output when the switch is disabled. The P-channel MOSFET has typical on resistance of 75mΩ. The very low RDS(ON) significantly reduces the power path dissipation. The input voltage range of AOZ1320 is from 1.8V to 5.5V. The control input is compatible with both TTL and CMOS logic. Ultra low quiescent current makes this product suitable for any portable applications. The AOZ1320 is available in a 6-pin SOT23 or 8-pin 2mm X 2mm DFN package and is rated over the -40°C to +85°C ambient temperature range. Features ● ● ● ● 1.8V to 5.5V Input Voltage Range Input Under-Voltage Lockout Low RDS(ON) (75mΩ Typical at 5V) Controlled Turn-On Slew Rate – 1ms (AOZ1320-01, -04) – 0.5µs (AOZ1320-02, -05) – 100µs (AOZ1320-03, -06) – 4.5ms (AOZ1320-07) Output Discharge Function (-03, -04, -05) Low Quiescent Current (1.2µA typical) Low Shutdown Current ( 2.5V) Maximum Pulsed Current (VIN < 2.5V) Storage Temperature (TS) ESD Rating(1) Parameter Operating Junction Temperature (TJ) Power Dissipation SOT23-6 2x2 DFN-8 Package Thermal Resistance SOT23-6 (ΘJA) 2x2 DFN-8 (ΘJA) Rating -40°C to +150°C 0.65W 1.54W 191°C/W 81°C/W Note: 1. Devices are inherently ESD sensitive, handling precautions are required. Human body model is a 100pF capacitor discharging through a 1.5kΩ resistor. Rev. 1.6 August 2008 www.aosmd.com Page 3 of 18 AOZ1320 Electrical Characteristics Symbol VIN VUVLO IIN IOUT(OFF) RDS(ON) TA = 25°C, VIN = VEN = 5V, unless otherwise specified. Specifications in BOLD indicate an ambient temperature range of -40°C to +85°C. Parameter Operating Voltage Range Under-Voltage Lockout Threshold Input Quiescent Current Switch Leakage Current Switch On-Resistance Conditions VIN Falling VIN Rising EN = 5.0V EN = GND VEN < VIL(max), VOUT = 0V VIN = 5.0V VIN = 4.2V VIN = 3.0V VIN = 1.8V VIN = 1.8V to 2.0V VIN = 2.0V to 4.2V VIN = 4.2V to 5.5V VEN = 5.5V RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 RL = 10Ω, See Figure 1 VEN < VIL(max) Min. 1.8 0.7 1.0 Typ. 5 0.9 1.2 1.2 Max. 5.5 1.3 1.6 4 1 1 100 105 110 150 0.8 Units V V µA µA mΩ 75 78 81 109 1.8 2.0 2.4 VIL VIH Enable Input-Low Voltage Enable Input-High Voltage V V IEN TD(ON) TR TD(OFF) TD(ON) TR TD(OFF) TD(ON) TR TD(OFF) AOZ1320-07 TD(ON) TR TD(OFF) RDIS Enable Input Leakage Current Output Turn-on delay Output Rise-time Output Turn-off delay Output Turn-On Delay Output Rise-Time Output Turn-Off Delay Output Turn-On Delay Output Rise Time Output Turn-Off Delay Output Turn-On Delay Output Rise Time Output Turn-Off Delay Output Pull-Down Resistance in Shutdown 1 200 1000 20 2 0.5 20 20 100 20 450 4500 20 180 300 1500 30 4 1 30 130 150 30 850 7500 30 250 µA µs µs µs µs µs µs µs µs µs µs µs µs Ω AOZ1320-01, -04 AOZ1320-02, -05 AOZ1320-03, -06 AOZ1320-03, -04, -05, -07 Rev. 1.6 August 2008 www.aosmd.com Page 4 of 18 AOZ1320 Typical Performance Characteristics Quiescent Current vs. Temperature 2.00 Quiescent Current (µA) 1.60 VIN = 5V Quiescent Current vs. Input Voltage 1.6 Quiescent Current (µA) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 1.20 0.80 0.40 0.00 -40 VIN = 3V 0 -20 0 20 40 60 80 100 0 1 2 3 4 5 6 Temperature (°C) Input Voltage (V) RDS(ON) vs. Input Voltage 180 160 RDS(ON) (mΩ) 140 120 100 80 60 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 1.6A RDS(ON) vs. Temperature 110 100 RDS(ON) (mΩ) 1A 500mA 90 VIN = 3V 80 70 60 50 -40 -20 0 20 VIN = 5V 100mA 40 60 80 100 Input Voltage (V) Temperature (°C) ON/OFF Threshold vs. Input Voltage 2.00 ON/OFF Threshold (V) 1.80 IOFF-SW (µA) 1.60 1.40 VIH OFF-Switch Current vs. Temperature 0.30 0.25 0.20 0.15 0.10 0.05 0 -40 1.20 1.00 0.80 0.60 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIL -20 0 20 40 60 80 100 Input Voltage (V) Temperature (°C) Rev. 1.6 August 2008 www.aosmd.com Page 5 of 18 AOZ1320 Typical Characteristics AOZ1320-01, AOZ1320-04 Turn-On (VIN = 3V, R = 6Ω) Turn-On (VIN = 5V, R = 10Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div Turn-Off (VIN = 3V, R = 6Ω) Turn-Off (VIN = 5V, R = 10Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div Rev. 1.6 August 2008 www.aosmd.com Page 6 of 18 AOZ1320 Typical Characteristics (Continued) AOZ1320-02, AOZ1320-05 Turn-On (VIN = 3V, R = 6Ω) Turn-On (VIN = 5V, R = 10Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div Turn-Off (VIN = 3V, R = 6Ω) Turn-Off (VIN = 5V, R = 10Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div Rev. 1.6 August 2008 www.aosmd.com Page 7 of 18 AOZ1320 Typical Characteristics (Continued) AOZ1320-03, AOZ1320-06 Turn-On (VIN = 3V, R = 6Ω) Turn-On (VIN = 5V, R = 10Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div Turn-Off (VIN = 3V, R = 6Ω) Turn-Off (VIN = 5V, R = 10Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 50µS/div Rev. 1.6 August 2008 www.aosmd.com Page 8 of 18 AOZ1320 Typical Characteristics (Continued) AOZ1320-07 Turn-On (VIN = 3V, R = 6Ω) Turn-On (VIN = 5V, R = 10Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 4mS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 4mS/div Turn-Off (VIN = 3V, R = 6Ω) Turn-Off (VIN = 5V, R = 10Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 4ms/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 4mS/div AOZ1320-03, AOZ1320-04, AOZ1320-05, AOZ1320-07 Turn-Off Output Discharge (VIN = VEN = 5V, VOUT = 5V, COUT = 4.7µF, TA = 25°C) CH1: VEN (2V/div) Time: 400µs/div CH2: VOUT (2V/div) Rev. 1.6 August 2008 www.aosmd.com Page 9 of 18 AOZ1320 Timing Diagram VIH EN 90% VIL 90% OUT TD(ON) 10% TD(OFF) TR Figure 1. AOZ1320 Timing Diagram Functional Block Diagram IN OUT UVLO Comparator + Gate Driver & Slew Rate Control 180Ω 0.9V EN – AOZ1320 -3, -4, -5 GND Figure 2. Functional Block Diagram Rev. 1.6 August 2008 www.aosmd.com Page 10 of 18 AOZ1320 Detailed Description Slew Rate Control The AOZ1320 is a family of P-channel high-side load switches with controlled slew rate. The device is enabled when the input voltage is above the Under-Voltage Lockout (UVLO) threshold and the EN pin is high. Once enabled, the gate driver and slew-rate control circuitry immediately raises the source-to-gate voltage of the P-channel MOSFET to its threshold level, and then gradually turns on the MOSFET by linearly increases the source-to-gate voltage. This slow turn-on action effectively limits the input inrush current and provides a nice ramp for the output voltage. After the MOSFET is fully enhanced, the AOZ1320 quickly increases the source-to-gate voltage to the full input voltage to minimize on resistance and reduce power dissipation. Three slew-rate options are available. AOZ1320-01 and -04 have a slew rate of 1ms, and the AOZ1320-07 has a slew rate of 4.5ms. This option significantly reduces the inrush current when the MOSFET turns on, allowing the use of very small input capacitor. AOZ1320-02 and -05 have no slew rate control and the MOSFET can be turned on within 500ns. This option is suitable for applications that require very fast switching. AOZ1320-03 and -06 have a moderate slew rate to 100µs. The AOZ1320-03, -04, -05, and -07 options include an internal output discharge circuit that quickly discharges the output to ground when the device is disabled. Input Under-Voltage Lockout The operating voltage range of AOZ1320 is from 1.8V to 5.5V. An internal UVLO comparator monitors the input voltage. The device is disabled if the input voltage falls below the UVLO threshold (0.9V typical). The UVLO comparator has about 300mV hysteresis. On/Off Control The AOZ1320 is enabled when the input voltage is above the UVLO threshold and the EN pin is asserted high. The device is disabled when the input voltage is below the UVLO threshold or the EN pin is asserted low. The EN input is compatible with both TTL and CMOS logic. Internal Discharge Resistor The AOZ1320 has an internal 180Ω resistor to discharge any remaining voltage from the system to the ground that is store in a capacitive load. This provides a safe shutdown of the system to prevent any damages to the devices. This function is controlled from the Enable pin. Applications Information Input Capacitor Selection Use a 1µF or larger capacitor for input bypassing. Place the capacitor close to the IN pins of AOZ1320. Output Capacitor Selection Use a 0.1µF or larger capacitor between OUT and GND. The capacitance does not affect the turn-on slew rate. However, a larger capacitor makes the initial turn-on transient smoother. Thermal Considerations To ensure proper operation, the maximum junction temperature (TJ(MAX)) of AOZ1320 should not exceed 150°C. Several factors attribute to the junction temperature rise: load current, MOSFET on resistance (RDS(ON)), onresistance temperature coefficient (TC), junction-to-ambient thermal resistance (ΘJA), and ambient temperature (TA). Use the following equation to determine the maximum continuous load current ILOAD(MAX): I LOAD ( MAX ) = T J ( MAX ) – T A ------------------------------------------------------------------------------------------------------------------Θ JA • R DS ( ON ) • [ 1 + T C • ( T J ( MAX ) – T A ) ] Rev. 1.6 August 2008 where RDS(ON) is the maximum value of the MOSFET on resistance at 25°C. Please note the maximum load current should not exceed the absolute maximum current rating of the switch. For the SOT-23 package, the absolute maximum current rating is 1.6A. For the 2x2 DFN package, the absolute maximum current rating is 2.3A. For example, when VIN = 5V, the maximum continuous load current of SOT-23 package at room temperature is: I LOAD ( MAX ) = 150 ° C – 25 ° C --------------------------------------------------------------------------------------------------------------------------------------------- = 2.78 A 120 ° C ⁄ W • 100 m Ω • [ 1 + 0.0028 • ( 150 ° C – 25 ° C ) ] Since the calculated current is greater than the absolute maximum current rating, the maximum load current at VIN = 5V and room temperature is 1.6A. Exceeding the maximum continuous load current may cause damage to the device. Figure 3 and Figure 4 show the maximum load current as a function of the ambient temperature for SOT23 and 2x2 DFN packages respectively. To ensure proper operation, the load current should not exceed the limits in these two figures. Page 11 of 18 www.aosmd.com AOZ1320 Maximum Load Current (IO) Maximum Load Current (IO) 2.5 2.0 1.5 VIN = 3V VIN = 5V 2.5 2.0 VIN = 3V VIN = 5V 1.5 1.0 0.5 0 0 20 40 60 80 100 1.0 0.5 0 0 20 40 60 80 100 Ambient Temperature (°C) Ambient Temperature (°C) Figure 3. Maximum Load Current Thermal Derating for SOT23 Package Figure 4. Maximum Load Current Thermal Derating for 2x2 DFN Package Layout Guidelines Good PCB is important for improving the thermal performance of AOZ1320. 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. The AOZ1320 evaluation board can be used as a layout example. The PCB layout of AOZ1320 evaluation board is shown in Figure 5 and 6. Figure 5. AOZ1320 (SOT23-6) PCB Layout Rev. 1.6 August 2008 www.aosmd.com Page 12 of 18 AOZ1320 Figure 6. AOZ1320 (DFN2X2) PCB Layout Rev. 1.6 August 2008 www.aosmd.com Page 13 of 18 AOZ1320 Package Dimensions, SOT23-6 LP Gauge Plane D e1 6 Seating Plane L2 c L E E1 1 θ e b A A2 aaa A1 Dimensions in millimeters Symbols A A1 A2 b c D E E1 e e1 L L2 aaa θ Min. — 0.00 0.70 0.35 0.10 2.80 2.60 1.50 Nom. — — 0.88 0.40 0.13 2.90 2.80 1.60 Max. 1.00 0.10 0.95 0.50 0.20 3.00 3.00 1.70 Dimensions in inches Symbols A A1 A2 b c D E E1 e e1 L L2 aaa θ Min. — 0.00 0.028 0.014 0.004 0.110 0.102 0.059 Nom. — — 0.035 0.016 0.005 0.114 0.110 0.063 Max. 0.039 0.004 0.037 0.020 0.008 0.118 0.118 0.067 RECOMMENDED LAND PATTERN 2.40 0.80 0.95 0.63 UNIT: mm 0.95 BSC 1.90 BSC 0.30 0.40 0.60 0.25 BSC 0.10 0° — 8° 0.037 BSC 0.075 BSC 0.012 0.016 0.024 0.010 BSC 0.004 0° — 8° Notes: 1. Package body sizes exclude mold flash and gate burrs. Mold flash at the non-lead sides should be less than 5 mils each. 2. Dimension “L” is measured in gauge plane. 3. Tolerance ±0.100mm (4 mil) unless otherwise specified. 4. Refer to JEDEC MO-193C AB. 6. Controlling dimension is millimeter. Converted inch dimensions are not necessarily exact. Rev. 1.6 August 2008 www.aosmd.com Page 14 of 18 AOZ1320 Tape and Reel Dimensions, SOT23-6 Tape P2 P1 D0 D1 E1 K0 E2 B0 E T P0 A0 Feeding Direction UNIT: mm Package SOT-23 5 & 6L LP A0 3.15 ±0.10 B0 3.20 ±0.10 K0 1.40 ±0.10 D0 D1 E 8.00 ±0.30 E1 1.75 ±0.10 E2 3.50 ±0.05 P0 4.00 ±0.10 P1 4.00 ±0.10 P2 2.00 ±0.05 T 0.23 ±0.03 1.00 1.50 ±0.05 +0.10/-0.00 Reel W1 S K M J N R H UNIT: mm Tape Size 8mm Reel Size ø177.8 M ø177.8 Max. N 55.0 Min. W1 H S 1.5 Min K 10.1 Min. R 12.7 J 4.0 ±0.1 8.4 13.0 +1.50 / -0.0 +0.5 / -0.2 Leader/Trailer and Orientation Trailer Tape 300mm min. Components Tape Orientation in Pocket Leader Tape 500mm min. Rev. 1.6 August 2008 www.aosmd.com Page 15 of 18 AOZ1320 Package Dimensions, DFN 2x2 8L D R b E E E1 L D1 TOP VIEW BOTTOM VIEW A c A1 Seating Plane SIDE VIEW Dimensions in millimeters RECOMMENDED LAND PATTERN 0.50 0.25 Symbols A A1 b c D D1 E E1 e L R aaa bbb ccc ddd Min. 0.70 0.00 0.18 0.15 Nom. 0.75 0.02 0.25 0.20 2.00 BSC 1.35 1.50 2.00 BSC 0.75 0.90 0.50 BSC 0.20 0.30 0.20 0.15 0.10 0.10 0.08 Max. 0.80 0.05 0.30 0.25 1.60 1.00 0.40 Dimensions in inches Symbols A A1 b c D D1 E E1 e L R aaa bbb ccc ddd Min. 0.028 0.000 0.007 0.006 Nom. Max. 0.030 0.031 0.001 0.002 0.010 0.012 0.008 0.010 0.079 BSC 0.053 0.059 0.063 0.079 BSC 0.030 0.035 0.039 0.020 BSC 0.008 0.012 0.008 0.006 0.004 0.004 0.003 0.016 0.90 1.70 0.30 1.50 UNIT: mm 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 applied to metallized terminal and is measured between 0.10mm 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. 1.6 August 2008 www.aosmd.com Page 16 of 18 AOZ1320 Tape and Reel Dimensions, DFN 2 x 2 Carrier Tape P1 K0 E2 B0 P2 D0 D1 E1 E T P0 A0 Feeding Direction UNIT: mm Package DFN 2x2 A0 2.25 ±0.05 B0 2.25 ±0.05 K0 D0 D1 E E1 E2 3.50 ±0.05 P0 4.00 ±0.10 P1 4.00 ±0.10 P2 2.00 ±0.10 T 0.254 ±0.02 1.00 1.50 1.00 8.00 1.75 ±0.05 +0.1/-0 ±0.25/-0 +0.30/-0.10 ±0.10 Reel W1 S R K M N H UNIT: mm Tape Size Reel Size M 8mm ø180 ø180.00 ±0.50 N 60.0 ±0.50 W1 8.4 +1.5/-0.0 H 13.0 ±0.20 S 1.5 Min. K 13.5 Min. R 3.0 ±0.50 Leader / Trailer & Orientation Trailer Tape 300mm Min. Components Tape Orientation in Pocket Leader Tape 500mm Min. Rev. 1.6 August 2008 www.aosmd.com Page 17 of 18 AOZ1320 Package Marking SOT-23 DFN2x2 $P $N $O $W $L $T $P $N: major part number $P $N: underbar = Green part $O: option/assembly location $W: week & year $L $T: assembly lot number $P $N $O $A $Y $W $L $T $P $N: major part number $P $N: underbar = Green part $O: options $A: assembly location $Y: year $W: week $L $T: assembly lot number Alpha & Omega Semiconductor reserves the right to make changes at any time without notice. LIFE SUPPORT POLICY ALPHA & 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. 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. Rev. 1.6 August 2008 www.aosmd.com Page 18 of 18