SKY84632 SKYWORKS | Alldatasheet

Document overview

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Technical content

Features

 1.5 V to 5.5 V input voltage range  3 A Maximum continuous current capability  Typical RDS(ON)  38 m at VIN = 5.5 V  40 m at VIN = 4.5 V  76 m at VIN = 1.8 V  97 m at VIN = 1.5 V  Reverse blocking (RB)  Input hot plug capability  Over-temperature protection  Typical 2.7 ms rise time for slew rate/inrush control  Low quiescent current (typical 9 A)  Less than 1 A off supply current  Enable control  Logic CMOS IO meets JESD76 standard  Active high with internal pull-down resistor  Ultra small, low-profile WLCSP (6-bump, 0.5 mm pitch, 0.995 х 1.495 mm) package (MSL1, 260 °C per JEDEC-J-STD-020) Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green™ , document number SQ04-0074.

Description

The SKY84632 SmartSwitch is a slew rate controlled P-channel MOSFET power switch designed for high side load switching applications. This switch operates with inputs ranging from 1.5 V to 5.5 V, making it ideal for 1.8 V, 3 V, and 5 V systems. It connects/disconnects up to 3 A continuous loads powered from the DC power rail with stringent off-state current targets and high load capacitances (up to 100 F) through enable control. The integrated low-impedance PMOSFET switch, together with typical 2.7 ms turn-on slew rate control, prevents large inrush current and excessive voltage drop on power rails. The SKY84632 has the reverse blocking feature that blocks unexpected reverse current from OUT to IN during the PMOSFET on and off states. The typical 9 A quiescent current makes it ideal for power saving applications. The exceptional low off-state current drain (maximum 1 A) facilitates compliance with standby power requirements. The switch enable control is active high with an internal pull-down resistor that eliminates the need for an external pull-down resistor. The SKY84632 also includes over- temperature protection and recovers automatically when the fault is removed. The SKY84632 is available in a 6-bump, 0.995 х 1.495 mm, Wafer-Level Chip-Scale Package (WLCSP) with 0.5 mm pin pitch, and is rated over the –40 °C to +85 °C temperature range. A typical application circuit is shown in Figure 1. The pin configuration is shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1. IN ON OFF EN OUT GND COUTCIN 1 μF to 22 μF SKY84632 VIN: 1.5 V to 5.5 V VOUT 0.1 μF to 100 μF tc1 Figure 1. SKY84632 Typical Application Circuit

Figure 2. SKY84632 Pinout – 6-Bump WLCSP Table 1. SKY84632 Signal Descriptions A1, B1 OUT Load switch output. Put at least 0.1 F output capacitor between OUT and GND. A2, B2 IN Supply input. Put at least 1 F input capacitor between IN and GND. C2 EN Enable input. Active high with internal pull-down resistor.

Table 2. The recommended operating conditions are specified in Table 3, and electrical specifications are provided in Table 4. illustrated in Figures 5 through 22. relationship between tD(ON) and tD(OFF). Table 2. SKY84632 Absolute Maximum Ratings (Note 1) parameters set at or below their nominal value. Exceeding any of the limits listed may result in permanent damage to the device. Note 2: Support IN high voltage pulse up to 7 V lasting 8 s. Note 3: Mounted on FR4 circuit board. or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times. Table 3. SKY84632 Recommended Operating Conditions

Table 4. SKY84632 Electrical Specifications (1 of 2) (Note 1)

Figure 11. EN Input Logic High Voltage vs Temperature Figure 13. EN Input Logic Low Voltage vs Temperature Figure 15. EN Input Logic High/Low Voltage vs Input Voltage Figure 12. EN Input Logic High Voltage vs Input Voltage Figure 14. EN Input Logic Low Voltage vs Input Voltage

2 V/div

2 V/div 0

Figure 16. Output Turn-On Time

Figure 17. Output Turn-On Time Figure 19. Turn On/Off Delay Time vs Temperature

1 A/div

Figure 21. RB Response Time During On Figure 18. Output Turn-Off Time Figure 20. Turn On Rising & Trun-Off Falling Time Figure 22. RB Response Time During Off

DATA SHEET • SKY84632 3A SLEW-RATE CONTROLLED LOAD SWITCH WITH REVERSE BLOCKING Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202090D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 30, 2013 9 Control Logic Reverse Blocking Turn-On Slew Rate Controlled Driver R EN IN EN OUT GND Over-Temp Protection tc3 Figure 23. SKY84632 Functional Block Diagram operating. When switched off, the device draws less than 1 A.

Application Information

Slew Rate and Inrush Current Control To avoid large inrush current when the load switch is turned on, the slew rate controller feature allows the output voltage to rise slowly. The inrush current is dependent on slew rate control capability and output capacitance as expressed by: IINRUSH = ILOAD + COUT × (VIN - VOUT) tR Where: COUT = Output capacitance in F VIN = Input voltage in V tR: = Rise time at V OUT in ms VINITIAL = Initial voltage at COUT in V ILOAD = Load current in mA For example, the SKY84632 has a 2.7 ms of slew rate capability under 4.5 V at 100 F of COUT and no load, so inrush current can be minimized under 200 mA as Figure 24 shows. Time (2 ms/div) VOUT Figure 24: Inrush Current Waveform (VIN = 5.0 V, CIN = 10 F, COUT = 100 F, No Load) High inrush current makes the input voltage drop. The voltage drop value depends on the inrush current, power line equivalent parasitic resistance, and input capacitor. A large input voltage drop can cause system application problems. Reverse Blocking The reverse blocking feature protects the input source against current flow from output to input regardless of whether the load switch is on or off.

DATA SHEET • SKY84632 3A SLEW-RATE CONTROLLED LOAD SWITCH WITH REVERSE BLOCKING Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202090D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 30, 2013 13

Ordering Information

Model Name Manufacturing Part Number (Note 1) Evaluation Board Part Number SKY84632 Load Switch with Reverse Blocking SKY84632-11-001 SKY84632-11-001-EVB Note 1: Sample stock is generally held on part numbers listed in BOLD. Copyright © 2013 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, INCLUDING 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 www.skyworksinc.com, are incorporated by reference.