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MIC4742YTSE

Description
Conv DC-DC 2.9V to 5.5V Step Down Dual-Out 0.6V 2A 16-Pin TSSOP EP Tube
File Size595KB,23 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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MIC4742YTSE Overview

Conv DC-DC 2.9V to 5.5V Step Down Dual-Out 0.6V 2A 16-Pin TSSOP EP Tube

MIC4742YTSE Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeStep Down
Output TypeAdjustable
Switching Frequency (kHz)2000(Typ)
Switching RegulatorYes
Number of Outputs2
Output Voltage (V)0.6(Min)
Maximum Output Current (A)2
Minimum Input Voltage (V)2.9
Maximum Input Voltage (V)5.5
Operating Supply Voltage (V)2.9 to 5.5
Typical Quiescent Current (uA)1400
Line Regulation0.07%(Typ)
Load Regulation0.2%(Typ)
Efficiency (%)92(Min)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
PackagingTube
Supplier PackageTSSOP EP
Pin Count16
Standard Package NameSOP
MountingSurface Mount
Package Height0.9
Package Length5
Package Width4.4
PCB changed16
Lead ShapeGull-wing
MIC4742
2 MHz Dual 2A Integrated Switch
Buck Regulator
General Description
The Micrel MIC4742 is a high efficiency dual PWM buck
(step-down) regulator that provides dual 2A current output.
The MIC4742 operates at 2MHz. A proprietary internal
compensation technique allows a closed loop bandwidth of
over 200kHz.
The low on-resistance internal P-Channel MOSFET of the
MIC4742 allows efficiencies over 92%, reduces external
components count and eliminates the need for an
expensive current sense resistor.
The MIC4742 operates from 2.9V to 5.5V input and the
output can be adjusted down to 0.6V. The device can
operate with a maximum duty cycle of 100% for use in low-
dropout conditions.
The MIC4742 is available in the exposed pad 16-pin
3mm x 3mm MLF
®
and EPAD TSSOP-16 packages with a
junction operating range from –40°C to +125°C.
All support documentation can be found on Micrel’s web
site at: www.micrel.com.
Features
2.9 to 5.5V supply voltage
2MHz PWM mode
2A Dual output
Greater than 92% efficiency
100% maximum duty cycle
Adjustable output voltage option down to 0.6V
Ultra-fast transient response
Ultra-small external components
Stable with a 1µH inductor and a 4.7µF output
capacitor
Fully integrated 2A MOSFET switches
Micro-power shutdown
Thermal shutdown and current limit protection
Available in a 3mm x 3mm 16-pin MLF
®
and 16-pin
TSSOP
–40°C to +125°C junction temperature range
Applications
Broadband: xDSL modems
Automotive satellite radios
HD STB, DVD/TV recorder
Computer peripherals: printers and graphic cards
FPGA/ASIC
General point of load
Typical Application
5.0Vin 3.3Vout Efficiency
100
98
96
EFFICIENCY (%)
94
92
90
88
86
84
82
80
0
0.4
0.8
1.2
1.6
2
OUTPUT CURRENT (A)
2A 2MHz Dual Buck Regulator
MLF and
MicroLeadFrame
are registered trademarks of 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
March 2009
1
M9999-030209-D

MIC4742YTSE Related Products

MIC4742YTSE MIC4742YML-TR
Description Conv DC-DC 2.9V to 5.5V Step Down Dual-Out 0.6V 2A 16-Pin TSSOP EP Tube Conv DC-DC 2.9V to 5.5V Step Down Dual-Out 0.6V 2A 16-Pin QFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant
ECCN (US) EAR99 EAR99
Part Status Active Active
HTS 8542.39.00.01 8542.39.00.01
Type Step Down Step Down
Output Type Adjustable Adjustable
Switching Frequency (kHz) 2000(Typ) 2000(Typ)
Switching Regulator Yes Yes
Number of Outputs 2 2
Output Voltage (V) 0.6(Min) 0.6(Min)
Maximum Output Current (A) 2 2
Minimum Input Voltage (V) 2.9 2.9
Maximum Input Voltage (V) 5.5 5.5
Operating Supply Voltage (V) 2.9 to 5.5 2.9 to 5.5
Typical Quiescent Current (uA) 1400 1400
Line Regulation 0.07%(Typ) 0.07%(Typ)
Load Regulation 0.2%(Typ) 0.2%(Typ)
Efficiency (%) 92(Min) 92(Min)
Minimum Operating Temperature (°C) -40 -40
Maximum Operating Temperature (°C) 125 125
Packaging Tube Tape and Reel
Supplier Package TSSOP EP QFN EP
Pin Count 16 16
Mounting Surface Mount Surface Mount
Package Height 0.9 0.85(Max)
Package Length 5 3
Package Width 4.4 3
PCB changed 16 16
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