PRODUCT SUMMARY
SKY87201-11: Low Noise, Fast Transient 600 mA Step-Down
Converter with Output Auto Discharge
Applications
•
Cellular phones
•
Digital cameras
•
Handheld instruments
•
Microprocessor, DSP Core, I/O power
•
PDAs and handheld computers
•
USB devices
Description
The SKY87201-11 is a 2 MHz step-down converter with an input
voltage range of 2.7 V to 5.5 V and output voltage as low as 0.6
V.
It is optimized to react quickly to a load variation. The SKY87201-
11 incorporates a unique low-noise architecture that reduces
ripple and spectral noise.
The SKY87201-11 is programmable with external feedback
resistors. It can deliver 600 mA of load current while maintaining
a low 37
μA
no-load
quiescent current. The 2 MHz switching
frequency minimizes the size of external components while
keeping switching losses low.
The SKY87201-11 is designed to maintain high efficiency
throughout the operating range, which is critical for portable
applications.
The device has an output auto discharge feature. This enables the
device to quickly discharge the output when the device is disabled
(V
EN
= V
IN
to 0 V).
The SKY87201-11
is
provided
in
a
small,
8-pin, 2 x 2 mm Thin
Dual Flat No-Lead (STDFN) package.
A
functional block diagram is
shown in Figure 1.
Features
•
Output auto discharge when disabled
•
V
IN
range: 2.7 V to 5.5 V
•
Low-noise,
light-load mode
•
Low ripple power management mode
•
Output voltage adjustable from 0.6
V to V
IN
•
No load quiescent current: 37
μA
•
Up to 98% efficiency
•
Maximum output current: 600 mA
•
Switching Frequency:
2 MHz
•
Soft start: 150
μs
•
Fast
load transient
•
Over-temperature protection
•
Current
limit
protection
•
100% duty
cycle low-dropout operation
•
Shutdown current: <1
μA
•
Available in an STDFN
(8-pin, 2
x
2
mm) package
(MSL1,
260
°C
per JEDEC J-STD-020)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202528B • Skyworks Proprietary
Information
• Products and Product Information Are Subject To Change Without Notice • December 11, 2012
1
PRODUCT SUMMARY
•
SKY87201-11 LOW-NOISE STEP-DOWN CONVERTER
Figure 1. SKY87201-11 Block Diagram
Ordering Information
Model Name
SKY87201-11
Low-Noise,
Step-Down Converter with
Output Auto Discharge
Manufacturing Part Number
SKY87201-11
Evaluation Board Part Number
SKY87201-11-EVB
Copyright © 2012
Skyworks Solutions,
Inc. All Rights Reserved.
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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
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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,
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2
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
December 11, 2012 • Skyworks Proprietary
Information
• Products and Product Information Are Subject To Change Without Notice • 202528B
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