AAT4610B DATA SHEET AAT4610B SOT23-5. Current Limited Load Switch. General Description. Features. Applications. Typical Application
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1 AATB General Description The AATB SmartSwitch is a current limited P-channel MOSFET power switch designed for high-side load switching applications. This switch operates with inputs ranging from.v to.v, making it ideal for both V and V systems. An integrated current-limiting circuit protects the input supply against large currents which may cause the supply to fall out of regulation. The AATB is also protected from thermal overload which limits power dissipation and junction temperatures. It can be used to control loads that require up to A. Current limit threshold is programmed with a resistor from SET to ground. The quiescent supply current is typically a low 9μA. In shutdown mode, the supply current decreases to less than μa. The AATB is available in a Pb-free -pin SOT or 8-pin SC7JW package and is specified over the - C to +8 C temperature range. Features Input Voltage Range:.V to.v Programmable Over-Current Threshold Fast Transient Response: ns Response to Short Circuit Low Quiescent Current 9μA Typical μa Max with Switch Off mω Typical R DS(ON) Only.V Needed for ON/OFF Control Under-Voltage Lockout Thermal Shutdown kv ESD Rating -Pin SOT or 8-Pin SC7JW Package Temperature Range: - C to +8 C Applications Hot Swap Supplies Notebook Computers Peripheral Ports Personal Communication Devices UL Recognized Component UL Approved File No. E77 Certified to IEC 9-(ed. ), IEC 9-(ed. ); am Typical Application INPUT IN AATB SOT- OUT OUTPUT ON (ON) ON/(ON) SET μf R SET.7μF Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
2 AATB Pin Descriptions Pin Number SOT- SC7JW-8 Symbol Function OUT P-channel MOSFET drain. Connect a.7μf capacitor from OUT to., 7, 8 Ground connection. SET Current limit set input. A resistor from SET to ground sets the current limit for the switch. ON Enable input. Two versions are available, active-high and active-low. See Ordering Information for details., IN P-channel MOSFET source. Connect a μf capacitor from IN to. Pin Configuration SOT- (Top View) SC7JW-8 (Top View) OUT SET IN ON SET ON IN IN 8 7 OUT Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
3 AATB Absolute Maximum Ratings T A = C, unless otherwise noted. Symbol Description Value Units V IN IN to -. to V V ON ON(ON) to -. to V IN +. V V SET, V OUT SET, OUT to -. to V IN +. V I MAX Maximum Continuous Switch Current A T J Operating Junction Temperature Range - to C T LEAD Maximum Soldering Temperature (at Leads) C V ESD ESD Rating - HBM V Thermal Characteristics Symbol Description Value Units JA Thermal Resistance (SOT- or SC7JW-8) C/W P D Power Dissipation (SOT- or SC7JW-8) 7 mw. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.. Human body model is a pf capacitor discharged through a.kω resistor into each pin.. Mounted on a demo board. Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
4 Electrical Characteristics V IN = V, T A = - C to +8 C, unless otherwise noted. Typical values are T A = C. DATA SHEET AATB Symbol Description Conditions Min Typ Max Units V IN Operation Voltage.. V I Q Quiescent Current V IN = V, ON (ON) = Active, I OUT = 9 μa I Q(OFF) Off Supply Current ON (ON) = Inactive, V IN =.V μa I SD(OFF) Off Switch Current ON (ON) = Inactive, V IN =.V, V OUT =. μa V UVLO Under-Voltage Lockout Rising Edge, % Hysteresis.8. V V IN =.V, T A = C 8 R DS(ON) On Resistance V IN =.V, T A = C mω V IN =.V, T A = C 9 TC RDS On Resistance Temperature Coefficient 8 ppm/ C I LIM Current Limit R SET =.8kΩ... A I LIM(MIN) Minimum Current Limit ma V ON(L) ON (ON) Input Low Voltage V IN =.7V to.v.8 V V ON(H) ON (ON) Input High Voltage V IN =.7V to <.V. V IN.V to.v. V I ON(SINK) ON (ON) Input Leakage V ON =.V. μa T RESP Current Limit Response Time V IN = V. μs T OFF Turn-Off Time V IN = V, R L = Ω μs T ON Turn-On Time V IN = V, R L = Ω μs T SD Over-Temperature Threshold V IN = V T J Increasing T J Decreasing C. For V IN outside this range, consult Typical ON (ON) Threshold curve. Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
5 AATB Typical Characteristics Unless otherwise noted, V IN = V, T A = C. Quiescent Current vs. Temperature Quiescent Current vs. Input Voltage Quiescent Current (μa) Quiescent Current (μa) Input Voltage (V) Output Current vs. Output Voltage (R SET =.kω) R DS(ON) vs. Temperature Output Current (A) Output Voltage (V) R DS(ON) (mω) Input = V 8 Input = V Temperature ( C) Off-Supply Current vs. Temperature Off-Switch Current vs. Temperature Off-Supply Current (μa) Off-Switch Current (μa) Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
6 AATB Typical Characteristics Unless otherwise noted, V IN = V, T A = C. Turn-On vs. Temperature (R LOAD = Ω; C LOAD =.7μF) Turn-Off vs. Temperature (R LOAD = Ω; C LOAD =.7μF) Turn-On Time (μs) V IN = V V IN = V Turn-Off Time (μs) V IN = V V IN = V Turn-On (R L = Ω; C L =.7μF) Turn-Off (R L = Ω; C L =.7μF) Voltage (V) ON Output Voltage (V) ON Output Time (μs) Time (μs) Short-Circuit Through.Ω V IH and V IL vs. V IN Input and Output Voltage (V) 8 7 Input Voltage 8 Output Current Output Voltage Time (μs) Output Current (A) V IH. V IL V IN (V) Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
7 AATB Typical Characteristics Unless otherwise noted, V IN = V, T A = C. R SET vs. I LIM R SET Coefficient vs. I LIM R SET (kω) R SET I LIM Product (kv) I LIM (ma) I LIM (A) Output Current vs. Temperature (R SET =.kω). Current Limit (%) Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7, 7
8 AATB Functional Block Diagram IN OUT Under- Voltage Lockout Over-Temperature Protection ON (ON).V Reference Current Limit SET R SET Application Information Setting Current Limit In most applications, the variation in I LIM must be taken into account when determining R SET. The I LIM variation is due to processing variations from part to part, as well as variations in the voltages at IN and OUT, plus the operating temperature. See charts Current Limit vs. Temperature and Output Current vs. V OUT. Together, these three factors add up to a ±% tolerance (see I LIM specification in Electrical Characteristics section). Figure illustrates a cold device with a statistically higher current limit and a hot device with a statistically lower current limit, both with R SET equal to 8.87kΩ. While the chart, "R SET vs. I LIM indicates an I LIM of.a with an R SET of.kω, this figure shows that the actual current limit will be at least.8a and no greater than.7a. To determine R SET, start with the maximum current drawn by the load and multiply it by. (typical I LIM = minimum I LIM /.7). This is the typical current limit value. Next, refer to R SET vs. I LIM and find the R SET that corresponds to the typical current limit value. Choose the largest resistor available that is less than or equal to it. For greater precision, the value of R SET may also be calculated using the I LIM R SET product found in the chart R SET Coefficient vs. I LIM. The maximum current is derived by multiplying the typical current for the chosen R SET in the chart by.. A few standard resistor values are listed in Table. Current Limit (A) Current Limit vs. Output Voltage (R SET = 8.87kΩ) IMAX =.7A Device with high current limit at - C Device with low current limit at 8 C IMIN =.8A Output Voltage (V) Figure : Current Limit Using.kΩ. 8 Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
9 AATB R SET (kω) Current Limit Typ (ma) Device Will Not Current Limit Below (ma) Device Always Current Limits Below (ma) Table : Current Limit R SET Values Example: A USB port requires.a..a multiplied by. is.a. From the chart named R SET vs. I LIM, R SET should be less than 8kΩ. 7.8kΩ is a standard value that is a little less than 8kΩ but very close. The chart reads approximately.a as a typical I LIM value for 7.8kΩ. Multiplying.A by.7 and. shows that the AATB will limit the load current to greater than.9a but less than.a. Operation in Current Limit When a heavy load is applied to the output of the AATB, the load current is limited to the value of I LIM determined by R SET (see Figure ). Since the load is demanding more current than I LIM, the voltage at the output drops. This causes the AATB to dissipate a larger than normal quantity of power, and its die temperature to increase. When the die temperature exceeds an over-temperature limit, the AATB will shut down until is has cooled sufficiently, at which point it will startup again. The AATB will continue to cycle on and off until the load is removed, power is removed, or until a logic high level is applied to ON. Enable Input In many systems, power planes are controlled by integrated circuits which run at lower voltages than the power plane itself. The enable input ON of the AATB has low and high threshold voltages that accommodate this condition. The threshold voltages are compatible with V TTL and.v to V CMOS. Reverse Voltage The AATB is designed to control current flowing from IN to OUT. If a voltage is applied to OUT which is greater than the voltage on IN, large currents may flow. This could cause damage to the AATB. Overload Operation Output Voltage (V).7.. Output Current A load is turned on at time = Output Voltage Output Current (A) Figure : Overload Operation. Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7, 9
10 AATB Ordering Information Package Enable Marking Part Number (Tape and Reel) SOT- ON (active high) 8FXYY AATBIGV--T SC7JW-8 ON (active high) 8GXYY AATBIJS--T SOT- ON (active low) B9XYY AATBIGV-T SC7JW-8 ON (active low) B8XYY AATBIJS-T Skyworks Green products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green, document number SQ-7. Package Information SOT-.8 ±..9 BSC.9 BSC.7 ±..8 ±.. REF. ±.. ±.. ±.7 GAUGE PLANE ±. ±..7 ±.7 ±. REF. ±.. BSC All dimensions in millimeters.. XYY = assembly and date code.. Sample stock is generally held on part numbers listed in BOLD. Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
11 AATB SC7JW-8. BSC. BSC. BSC.7 ±.. ±.. ±.7. ±..8 ±.. MAX. ±... ±. 7 ± ±.8REF. ±.. ±. All dimensions in millimeters. Copyright Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. ( Skyworks ) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, IN- CLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and Breakthrough Simplicity are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at are incorporated by reference. Skyworks Solutions, Inc. Phone [78] 7- Fax [78] 7- sales@skyworksinc.com 97A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 7,
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