SKY87021-11

Power Management IC for the SkyBlue™ System

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).

Product Summary

Talk to Sales ECAD Model

Specifications

Min. V_IN (V)2.5

Max. V_IN (V)5.5

Min. V_OUT (V)2.5

Max. V_OUT (V)VccPA
Max.

I_OUT (mA)TBD

f_OSC (kHz)TBD

Typ. I_Q (μA)TBD

PackageCSP, 16-ball

Package (mm)1.991 x 1.991 x 0.695

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
  - For HPUE application, 1.5 μH inductor, 2x1.0 μF output capacitor
  - For non-HPUE application: 1.5 μH/2.2 μH, 1.0 μF output capacitor
  - 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 x 1.991 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

Product Documents

Applications

Smartphones

See all

4G LTE

See all

Sales Help
Technical Help

Find Your Sales Representative and Distributor
Consult with your Skyworks sales representative or distributor to find the best solution for your design.

Request a Quote
Get a quote for the specific products and quantities you need.

Working with Skyworks
Learn more about our purchase process to navigate quickly and efficiently

Support and Resources
Explore Skyworks support options, consult with our global sales and channel partners, and get the resources and expert guidance and custom development services you need to help you with your next innovation.

Technical Documents
Explore application notes, block diagrams, data sheets, user guides, ADS model calculators, installation references, S parameters and more.

Product Lifecycle Status Lookup
Lookup the product lifecycle status of Skyworks part number

Certificate of Conformance
Look up a product’s Certificate of Conformance for information such as REACH, RoHS, IEC 624741 and more.

Engineer examining electrical components

Previously Visited Products

New and Featured Products

Previously Visited Applications

New and Featured Applications