AP2280 Single Channel Slew Rate Controlled Load Switch Description Features • • • • • • • • • • Wide input voltage range: 1.5V – 6V Low RDS(ON): 80mΩ typical @ 5V Turn-on slew rate controlled AP2280-1: 100us turn-on rise time AP2280-2: 1ms turn-on rise time Very low turn-on quiescent current: << 1uA Fast load discharge pin Temperature range -40ºC to 85°C SOT25 and DFN2018-6: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) The AP2280 slew rate controlled load switch is a single P-channel MOSFET power switch designed for high-side load-switching or power distribution applications. The MOSFET has a typical RDS(ON) of 80mΩ at 5V, allowing increased load current handling capability with a low forward voltage drop. The turn-on slew rate of the device is controlled internally to reduce turn-on inrush current. The AP2280 load switch is designed to operate from 1.5V to 6.0V, making it ideal for 1.8V, 2.5V, 3.3V, and 5V systems. The typical quiescent supply current is only 0.004uA, making it ideal for battery powered distribution system where the power consumption is a concern. Applications • • • • • • • Smart Phones Personal Digital Assistant (PDA) Cell Phones GPS Navigators Bluetooth Headsets PMP/MP4 Notebook and Pocket PC Ordering Information AP2280 - X XX G - 7 Turn- on rise time Package 1 : 100us 2 : 1ms W : SOT25 FM : DFN2018-6 Device AP2280-1WG-7 AP2280-2WG-7 AP2280-1FMG-7 AP2280-2FMG-7 Notes: Package Code W W FM FM Packaging (Note 2) SOT25 SOT25 DFN2018-6 DFN2018-6 Green G : Green Packing 7 : Tape & Reel 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP2280 Rev. 6 1 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Pin Assignments (1) SOT25 (2) DFN2018-6 ( Top View ) DIS 1 ( Top View ) 5 EN GND 2 OUT 3 4 IN OUT 1 6 IN GND 2 5 IN DIS 3 4 EN Pin Description Pin Name Pin Number Description SOT25 DFN2018-6 DIS 1 3 Discharge pin. If DIS pin is tied to OUT pin externally, the output voltage will be discharged to ground when disabled. GND 2 2 Ground. OUT 3 1 Voltage output pin. This is the pin to the P-channel MOSFET drain. Bypass to ground through a 0.1uF capacitor. IN 4 5, 6 Voltage input pin. This is the pin to the P-channel MOSFET source. Bypass to ground through a 1µF capacitor. EN 5 4 Enable input, active high Block Diagram AP2280 Rev. 6 2 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Typical Application Circuits V IN V IN V OUT IN V OUT IN O UT OUT D IS 1uF Enable D IS 0.1uF 1uF EN Enable 0.1uF EN G ND G ND For applications without output discharge For applications with output discharge Absolute Maximum Ratings Symbol Parameter ESD HBM Human Body Model ESD Protection ESD MM Machine Model ESD Protection Units 4 KV 400 V VIN VOUT Input Voltage Output Voltage 6.5 VIN + 0.3 V V VEN Enable Voltage 6.5 V Iload Maximum Continuous Load Current 2 A 125 °C -65 ~ 150 °C TJ(max) TST PD Notes: Ratings Maximum Junction Temperature Storage Temperature Range Power Dissipation SOT25 (Note 3, 5) 750 DFN2018-6 (Note 3, 6) 1260 mW 3. Ratings apply to ambient temperature at 25°C Recommended Operating Conditions Symbol VIN IOUT TA Notes: Parameter Input voltage Output Current (Note 4) Operating Ambient Temperature Min 1.5 0 -40 Max 6.0 2.0 85 Units V A °C 4. Maximum output current depends on application conditions. Please refer to the application note section. AP2280 Rev. 6 3 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Electrical Characteristics (TA = 25oC, VIN = VEN = 5.0V, unless otherwise stated) Symbol Parameters Input Quiescent Current IQ Input Shutdown Current ISHDN Input Leakage Current ILEAK RDS(ON) VIL VIH ISINK TD(ON) TON TD(OFF) RDISCH θJA θJC Notes: Test Conditions VEN = VIN, IOUT= 0 VEN = 0V, OUT open VEN = 0V, OUT grounded VIN = 5.0V VIN = 3.3V Switch on-resistance VIN = 1.8V VIN = 1.5V EN Input Logic Low Voltage VIN = 1.5V to 6V 1.5V ≤ VIN ≤ 2.7V EN Input Logic High Voltage 2.7V < VIN < 5.25V VIN ≥ 5.25V EN Input leakage VEN = 5V Output turn-on delay time Rload=10Ω AP2280-1, Rload=10Ω Output turn-on rise time AP2280-2, Rload=10Ω Output turn-off delay time Rload=10Ω Discharge FET on-resistance VEN = GND SOT25 (Note 5) Thermal Resistance Junction-to-Ambient DFN2018-6 (Note 6) SOT25 (Note 5) Thermal Resistance Junction-to-case DFN2018-6 (Note 6) Min ⎯ ⎯ ⎯ 1.4 1.6 1.7 ⎯ Typ. 0.004 0.004 0.01 80 92 150 200 Max 1 1 1 105 120 200 250 0.4 1 1 100 150 1000 1500 0.4 1 20 40 160 93 38 41 Unit μA μA μA mΩ mΩ mΩ mΩ V V V V μA μS μS μS μS Ω o C/W o C/W 5. Test condition for SOT25: Device mounted on FR-4 substrate PC board, with minimum recommended pad layout. 6. Test condition for DFN2018-6: Device mounted on FR-4 2-layer board, 2oz copper, with minimum recommended pad on top layer and 3 vias to bottom layer 1.0"x1.4" ground plane. AP2280 Rev. 6 4 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Typical Performance Characteristics Quiescent Current vs. Input Voltage Quiescent Current vs. Temperature 0.020 Quiescent Current (uA) Quiescent Current (uA) 0.01 0.008 0.006 0.004 0.002 VIN=1.8V VIN=3.3V 0.015 VIN=5.0V 0.010 0.005 0.000 0 1.0 2.0 3.0 4.0 5.0 -40 6.0 -20 0 20 40 60 80 100 0 Input Voltage (V) Temperature ( C) RDS(ON) vs. Input Voltage RDS(ON) vs. Temperature 200.00 300.00 I=100mA 180.00 I=500mA 160.00 I=1A RDS(ON) (mΩ) RDS(ON) (mΩ) 250.00 I=2A 200.00 150.00 100.00 50.00 140.00 120.00 100.00 80.00 60.00 VIN =1.8V 40.00 VIN =3.3V 20.00 VIN =5V 0.00 1.5 2 2.5 3 3.5 4 4.5 5 5.5 -50 6 -25 0 ENABLE Threshold vs. Input Voltage 50 75 100 Input Shutdown Current vs. Temperature VIN=5V 0.010 1.8 1.6 0.008 1.4 ISHDN (uA) ON/OFF Threshold (V) 25 Temperature (0C) Input Voltage (V) 1.2 1 0.8 VIL (V) 0.6 0.006 0.004 0.002 VIH (V) 0.4 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0.000 -40 Input Voltage (V) AP2280 Rev. 6 -20 0 20 40 60 80 100 Temperature (0C) 5 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Typical Performance Characteristics (Continued) AP2280-1 Turn-On AP2280-1 Turn-Off (VIN=3.3V, RL=7Ω) (VIN=3.3V, RL=7Ω) VEN (2V/div) VEN (2V/div) VOUT (2V/div) VOUT (2V/div) IIN (500mA/div) IIN (500mA/div) Time (50μs/div) Time (5μs/div) AP2280-1 Turn-On AP2280-1 Turn-Off (VIN=5V, RL=10Ω) (VIN=5V, RL=10Ω) VEN (2V/div) VEN (2V/div) VOUT (2V/div) VOUT (2V/div) IIN (500mA/div) IIN (500mA/div) Time (5μs/div) Time (50μs/div) AP2280 Rev. 6 6 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Typical Performance Characteristics (Continued) AP2280-2 Turn-On AP2280-2 Turn-Off (VIN=3.3V, RL=7Ω) (VIN=3.3V, RL=7Ω) VEN (2V/div) VEN (2V/div) VOUT (2V/div) VOUT (2V/div) IIN (500mA/div) IIN (500mA/div) Time (500μs/div) Time (5μs/div) AP2280-2 Turn-On AP2280-2 Turn-Off (VIN=5V, RL=10Ω) (VIN=5V, RL=10Ω) VEN (2V/div) VEN (2V/div) VOUT (2V/div) VOUT (2V/div) IIN (200mA/div) IIN (500mA/div) Time (500μs/div) AP2280 Rev. 6 Time (5μs/div) 7 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Application Note Input Capacitor A 1μF capacitor is recommended to connect between IN and GND pins to decouple input power supply glitch and noise. The input capacitor has no specific type or ESR (Equivalent Series Resistance) requirement. However, for higher current application, ceramic capacitors are recommended due to their capability to withstand input current surges from low impedance sources, such as batteries in portable applications. This input capacitor must be located as close as possible to the device to assure input stability and less noise. For PCB layout, a wide copper trace is required for both IN and GND. Output Capacitor A 0.1μF capacitor is recommended to connect between OUT and GND pins to stabilize and accommodate load transient condition. The output capacitor has no specific type or ESR requirement. The amount of the capacitance may be increased without limit. For PCB layout, the output capacitor must be placed as close as possible to OUT and GND pins, and keep the traces as short as possible. Enable/Shutdown Operation The AP2280 is turned on by setting the EN pin high, and is turned off by pulling it low. To ensure proper operation, the signal source used to drive the EN pin must be able to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section under VIL and VIH. Discharge Operation The AP2280 offers discharge option that helps to discharge the output when disabled. To use this feature, the DIS pin is connected to OUT pin externally. If this feature is not used, the DIS pin should be left open. AP2280 Rev. 6 Power Dissipation The device power dissipation and proper sizing of the thermal plane is critical to avoid thermal shutdown and ensuring reliable operation. Power dissipation of the device depends on input voltage and load conditions and can be calculated by: PD = IOUT xR DSON 2 (1) However, the maximum power dissipation that can be handled by the device depends on the maximum junction to ambient thermal resistance, maximum ambient temperature, and maximum device junction temperature, which can be approximated by the equation below: PD (max@ TA ) = ( +125°C − TA ) (2) θ JA For example at VIN=5V, the typical RDSON = 80mΩ. For IOUT=2A, the maximum power dissipation calculated using equation (1) is PD=0.32W. Based on θJA =160°C/W and equation (2), the calculated junction temperature rise from ambient is approximately 51°C. Since the maximum junction temperature is 125°C, the operating ambient temperature must be kept below 74°C to safely operate the device. On the other hand, at TA=85°C and VIN=5V, the calculated maximum power dissipation from equation (2) is PDmax=0.25W. Hence the safe operating maximum continuous current is 1.77A. For other application conditions, the users should recalculate the device maximum power dissipation based on the operating conditions. 8 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Marking Information (1) SOT25 ( Top View ) 4 7 5 XX Y W X 1 2 3 XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green Device Package type Identification Code AP2280-1W AP2280-2W SOT25 SOT25 UA UB (2) DFN2018-6 ( Top View ) . AP2280 Rev. 6 XX YWX XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green Device Package type Identification Code AP2280-1FM AP2280-2FM DFN2018-6 DFN2018-6 UC UD 9 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Package Information (All Dimensions in mm) (1) Package type: SOT25 AP2280 Rev. 6 10 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Package Information (Continued) Seating Plane 2X0.25 A 0.08 C 0.545/0.605 6X- 0/0.05 0.10 C 0.13Typ (2) Package type: DFN2018-6 Side View C 1.75/1.875 B A Pin #1 ID 1.3/1.5 CL 0.9/1.1 1.95/2.075 0.2/0.3 CL 0.30Typ 2X- 0.25 B 0.50Typ 0.15/0.25 0.10 C A B Bottom View AP2280 Rev. 6 11 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP2280 Single Channel Slew Rate Controlled Load Switch Taping Orientation Notes: 7. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf. IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP2280 Rev. 6 12 of 12 www.diodes.com FEBRUARY 2009 © Diodes Incorporated