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MIC23159YML

Description
3MHz PWM Dual 2A Buck Regulator with HyperLight Load and Power Good
CategoryPower/power management    The power supply circuit   
File Size940KB,21 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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MIC23159YML Overview

3MHz PWM Dual 2A Buck Regulator with HyperLight Load and Power Good

MIC23159YML Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
package instructionHVQCCN, LCC20,.12X.16,20
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5.5 V
Minimum input voltage2.7 V
Nominal input voltage3.6 V
JESD-30 codeR-XQCC-N20
length4 mm
Number of functions1
Number of terminals20
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output current2 A
Maximum output voltage3.3 V
Minimum output voltage1 V
Package body materialUNSPECIFIED
encapsulated codeHVQCCN
Encapsulate equivalent codeLCC20,.12X.16,20
Package shapeRECTANGULAR
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Maximum seat height0.9 mm
Maximum supply current (Isup)0.09 mA
surface mountYES
Switch configurationBUCK
Temperature levelAUTOMOTIVE
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
width3 mm
Base Number Matches1
MIC23158/9
3MHz PWM Dual 2A Buck Regulator with
HyperLight Load
and Power Good
General Description
The MIC23158/9 is a high-efficiency, 3MHz, dual, 2A
synchronous buck regulator with HyperLight Load
mode,
power good output indicator, and programmable soft start.
The MIC23159 also provides an auto discharge feature
that switches in a 225Ω pull down circuit on its output to
discharge the output capacitor when disabled. HyperLight
Load provides very high efficiency at light loads and ultra-
fast transient response which makes the MIC23158/9
perfectly suited for supplying processor core voltages. An
additional benefit of this proprietary architecture is very low
output ripple voltage throughout the entire load range with
the use of small output capacitors. The 20-pin 3mm x 4mm
®
MLF package saves precious board space and requires
seven external components for each channel.
The MIC23158/9 is designed for use with a very small
inductor, down to 0.47µH, and an output capacitor as small
as 2.2µF that enables a total solution size, less than 1mm
in height.
The MIC23158/9 has a very low quiescent current of 45µA
and achieves a peak efficiency of 94% in continuous
conduction mode. In discontinuous conduction mode, the
MIC23158/9 can achieve 83% efficiency at 1mA.
The MIC23158/9 is available in a 20-pin 3mm x 4mm MLF
package with an operating junction temperature range
from –40°C to +125°C.
Datasheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
2.7V to 5.5V input voltage
Adjustable output voltage (down to 1.0V)
2 independent 2A outputs
Up to 94% peak efficiency
83% typical efficiency at 1mA
2 independent power good indicators
Independent programmable soft start
45µA typical quiescent current
3MHz PWM operation in continuous conduction mode
Ultra-fast transient response
Fully-integrated MOSFET switches
Output pre-bias safe
0.1µA shutdown current
Thermal-shutdown and current-limit protection
20-pin 3mm x 4mm MLF package
Internal 225Ω pull-down circuit on output (MIC23159)
–40°C to +125°C junction temperature range
Applications
Solid State Drives (SSD)
Smart phones
Tablet PCs
Mobile handsets
Portable devices (PMP, PND, UMPC, GPS)
WiFi/WiMax/WiBro applications
_______________________________________________________________________________________________________
Typical Application
HyperLight Load is a registered trademark of Micrel, Inc.
MLF and
MicroLeadFrame
are registered trademarks 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
November 2012
M9999-110812-A

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