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Technical content

Features

 Input voltage range: 2.5 V to 5.5 V  High voltage boost supply:  Output voltage range from Bypass to 11V  Output current up to 450mA  High efficiency: 90% typical (VIN=3.8 V, VOUT=9.5 V, ILOAD>110 mA)  Fast voltage transition response 570 mV/μs  Optimized for small external components o For HPUE application, 1.5 μH inductor, 2x1.0 μF output capacitor o For non-HPUE application: 1.5 μH/2.2 μH, 1.0 μF output capacitor o High 2.25 MHz switching frequency  Shutdown load disconnect  Fast load transient response, less than 20 μs  Over temperature, over voltage and short circuit protection  Low voltage ÷2 step-down function  Output current up to 30 mA  4.5 V, 3 mA PA bias supply output  MIPI RFFE interface for setup and control  8-bit output voltage programming resolution  Small footprint CSP (16-ball, 1.991 mm  1.991 mm) package (MSL1, 260 C per JEDEC J-STD-020) Skyworks GreenTM products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of GreenTM, document number SQ04–0074. 204287-001 1.5μH CIN 4.7μF COUT 1.0μF CF 0.1μF SW OUT VI N 4V5 USID SKY87021 VIN VOUT USID Address Selection C4V5 0.47μF CINf 0.1μF COUTf 0.1μF PGND SW VIOMIPI VIO 4.5V Bias Supply Output AGND GNDGND PGND PGND PGND GND GNDPGND CLS5V 0.22 μF LS5V PGND SCLK SDATA MIPI Clock MIPI Data MIPI RFFE Control Inputs CHPUE 1.0μF Figure 1. Typical Application Circuit (Programmable Output)

Description

The SKY87021-11 is a high-efficiency RF front-end power management IC for APT RF power amplifier (PA) applications in portable battery powered devices. This IC includes a high-efficiency DC-DC voltage converter capable of delivering 450 mA at 11 V with a 4.5 V reference supply to provide a user-programmable RF PA APT supply for a 2.5 V to 5.5 V input range. The SKY87021-11 also provides an additional 4.5 V bias supply for RF PA operation. This bias voltage output can supply load currents up to 3 mA and is available whenever the device is enabled. When the device is disabled, the 4.5 V bias supply is shut down. This device has over-voltage, over-current, shorted circuit, and thermal shutdown protection to protect the device and system under adverse operating conditions. The SKY87021-11 is capable of supporting HPUE front-end modules and is controlled with a MIPI RFFE 2.0 compliant interface with 8-bit output voltage programming resolution. The SKY87021-11 is available in a 16-pin, 1.991 mm x 1.991 mm Chip Scale Package (CSP). A typical application circuit is shown in Figure 1.

PRODUCT SUMMARY • SKY87021-11: POWER MANAGEMENT IC FOR THE SKYBLUE™ SYSTEM Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 2 February 6, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204512A

Ordering Information

Model Name Manufacturing Part Number Evaluation Board Part Number SKY87021-11: Power Management IC for the SkyBlue™ System SKY87021-11-001 SKY87021-11-EVB Copyright © 2017 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 and the Skyworks symbol 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.