MIC33030 Datasheet PDF - MICREL



Part Number MIC33030
Description 8MHz 400mA Internal Inductor Buck Regulator
Page 18 Pages

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8MHz 400mA Internal Inductor Buck
Regulator with HyperLight Load™
General Description
The MIC33030 is a high-efficiency, 8MHz, 400mA
synchronous buck regulator with an internal inductor and
HyperLight Load™ mode. HyperLight Load™ provides
very-high efficiency at light loads and ultra-fast transient
response that is perfectly suited for supplying processor
core voltages. An additional benefit of this proprietary
architecture is the very-low output ripple voltage
throughout the entire load range with the use of small
output capacitors. The tiny 2.5mm x 2.0mm MLF® package
saves precious board space and requires only two external
The MIC33030 is designed for use with tiny output
capacitors as small as 2.2µF. This gives the MIC33030 the
ease of use of an LDO with the efficiency of a HyperLight
Load™ DC converter.
The MIC33030 achieves efficiency in HyperLight Load™
mode as high as 78% at 1mA, with a very-low quiescent
current of 21µA. At higher loads, the MIC33030 provides a
constant switching frequency up to 8MHz.
The MIC33030 is available in a 10-pin 2.5mm x 2.0mm
MLF® package with an operating junction temperature
range of –40°C to +125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Internal Inductor
Simplifies design to two external capacitors
Input voltage: 2.7V to 5.5V
Output voltage accuracy of ±2.5% over temperature
400mA output current
Efficiency up to 78% at 1mA
21µA typical quiescent current
Up to 8MHz PWM operation in continuous mode
Ultra-fast transient response
Low-voltage output ripple
30mVpp ripple in HyperLight Loadmode
7mV output voltage ripple in full PWM mode
Fully-integrated MOSFET switches
0.01µA shutdown current
Thermal shutdown and current-limit protection
Fixed and adjustable output voltage options available
(0.7V to 3.6V)
2.5mm x 2.0mm 10-Lead MLF®
–40°C to +125°C junction temperature range
Mobile handsets
Portable media/MP3 players
Portable navigation devices (GPS)
WiFi/WiMax/WiBro modules
Digital Cameras
Wireless LAN cards
USB-powered devices
Portable applications
Typical Application
Fixed-Output MIC33030
Adjustable-Output MIC33030
HyperLight Load is a trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademark Amkor Technology Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
February 2011

MIC33030 datasheet pdf
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Related : Start with MIC3303 Part Numbers by
MIC33030 8MHz 400mA Internal Inductor Buck Regulator MIC33030
MIC33030 pdf

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